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Article ; Online: Nutritional status of honey bee (Apis mellifera L.) workers across an agricultural land-use gradient.

Smart, Matthew D / Otto, Clint R V / Lundgren, Jonathan G

2019 Volume 9, Issue 1, Page(s) 16252

Abstract: Land use, habitat, and forage quality have emerged as critical factors influencing the health, productivity, and survival of honey bee colonies. However, characterization of the mechanistic relationship between differential land-use conditions and ... ...

Abstract	Land use, habitat, and forage quality have emerged as critical factors influencing the health, productivity, and survival of honey bee colonies. However, characterization of the mechanistic relationship between differential land-use conditions and ultimate outcomes for honey bee colonies has been elusive. We assessed the physiological health of individual worker honey bees in colonies stationed across a gradient of agricultural land use to ask whether indicators of nutritional physiology including glycogen, total sugar, lipids, and protein were associated with land-use conditions over the growing season and colony population size the subsequent spring during almond pollination. Across the observed land-use gradient, we found that September lipid levels related to growing-season land use, with honey bees from apiaries surrounded by more favorable land covers such as grassland, pasture, conservation land, and fallow fields having greater lipid reserves. Further, we observed a significant relationship between total protein during September and population size of colonies during almond pollination the following February. We demonstrate and discuss the utility of quantifying nutritional biomarkers to infer land-use quality and predict colony population size.
MeSH term(s)	Agriculture ; Animals ; Bees/metabolism ; Bees/physiology ; Nutritional Status ; Pollination ; Prunus dulcis
Language	English
Publishing date	2019-11-07
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-019-52485-y
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Article: Tips and identification of early Eocene Fraxinus L. samaras from the Quilchena locality, Okanagan Highlands, British Columbia, Canada

Mathewes, Rolf / Archibald, S. Bruce / Lundgren, Alison

Review of palaeobotany and palynology. 2021 Oct., v. 293

2021

Abstract: A large collection (49 specimens) of early Eocene Fraxinus (ash) samaras enabled us to evaluate whether or not more than one species was present at the Quilchena fossil site. Analysis of living ashes indicates that morphology of the samara tips is ... ...

Abstract	A large collection (49 specimens) of early Eocene Fraxinus (ash) samaras enabled us to evaluate whether or not more than one species was present at the Quilchena fossil site. Analysis of living ashes indicates that morphology of the samara tips is sometimes cited as a taxonomic criterion, and sometimes assumed to be due to intraspecific variation. Two shale slabs with multiple samaras, some still attached to their fruiting panicle, have been recovered, and in each case all samaras were either emarginate at the tip, or entire, indicating a degree of fidelity of tip type, and the possibility that more than one species may be represented. Analysis of 27 dispersed samaras with notched tips, involving measurements of overall length, width, venation, and seed morphology, reveal differences with unnotched samaras from the same site, with width significantly greater (p < 0.05) for the notched samaras. Together with other differences that are not statistically significant, the larger size for notched specimens encouraged us to describe a new species, Fraxinus eoemarginata sp. nov. Quilchena is well dated to the early Eocene at 51.5 million years, making it the oldest radiometrically documented site for diversification of Fraxinus species.
Keywords	Eocene epoch ; Fraxinus ; fossils ; highlands ; intraspecific variation ; new species ; paleobotany ; palynology ; panicles ; samaras ; seed morphology ; shale ; British Columbia
Language	English
Dates of publication	2021-10
Publishing place	Elsevier B.V.
Document type	Article
ISSN	0034-6667
DOI	10.1016/j.revpalbo.2021.104480
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Article ; Online: Utilization of L-glutamate as a preferred or sole nutrient in Pseudomonas aeruginosa PAO1 depends on genes encoding for the enhancer-binding protein AauR, the sigma factor RpoN and the transporter complex AatJQMP.

Lundgren, Benjamin R / Shoytush, Joseph M / Scheel, Ryan A / Sain, Safreen / Sarwar, Zaara / Nomura, Christopher T

BMC microbiology

2021 Volume 21, Issue 1, Page(s) 83

Abstract: ... aatJ-aatQMP operon and its regulatory aauR and rpoN genes in the utilization of L-glutamate, L ... glutamine, L-aspartate and L-asparagine in Pseudomonas aeruginosa PAO1.: Results: Deletion of the aatJ ... aatQMP, aauR or rpoN genes did not affect the growth of P. aeruginosa PAO1 on L-glutamate, L-glutamine, L ...

Abstract	Background: Glutamate and aspartate are preferred nutrients for a variety of microorganisms. In the case for many Pseudomonas spp., utilization of these amino acids is believed to be dependent on a transporter complex comprised of a periplasmic-solute binding protein (AatJ), two permease domains (AatQM) and an ATP-binding component (AatP). Notably, expression of this transporter complex is hypothesized to be regulated at the transcriptional level by the enhancer-binding protein AauR and the alternative sigma factor RpoN. The purpose of the current study was to determine the biological significance of the putative aatJ-aatQMP operon and its regulatory aauR and rpoN genes in the utilization of L-glutamate, L-glutamine, L-aspartate and L-asparagine in Pseudomonas aeruginosa PAO1. Results: Deletion of the aatJ-aatQMP, aauR or rpoN genes did not affect the growth of P. aeruginosa PAO1 on L-glutamate, L-glutamine, L-aspartate and L-asparagine equally. Instead, only growth on L-glutamate as the sole carbon source was abolished with the deletion of any one of these genes. Interestingly, growth of the aauR mutant on L-glutamate was readily restored via plasmid-based expression of the aatQMP genes, suggesting that it is the function of AatQMP (and not AatJ) that is limiting in the absence of the aauR gene. Subsequent analysis of beta-galactosidase reporters revealed that both aatJ and aatQ were induced in response to L-glutamate, L-glutamine, L-aspartate or L-asparagine in a manner dependent on the aauR and rpoN genes. In addition, both aatJ and aatQ were expressed at reduced levels in the absence of the inducing-amino acids and the regulatory aauR and rpoN genes. The expression of the aatJ-aatQMP genes is, therefore, multifaceted. Lastly, the expression levels of aatJ were significantly higher (> 5 fold) than that of aatQ under all tested conditions. Conclusions: The primary function of AauR in P. aeruginosa PAO1 is to activate expression of the aatJ-aatQMP genes in response to exogenous acidic amino acids and their amide derivatives. Importantly, it is the AauR-RpoN mediated induction of the aatQMP genes that is the pivotal factor enabling P. aeruginosa PAO1 to effectively utilize or consume L-glutamate as a sole or preferred nutrient.
MeSH term(s)	Gene Expression Regulation, Bacterial ; Genes, Bacterial/genetics ; Glutamic Acid/metabolism ; Plasmids/genetics ; Pseudomonas aeruginosa/genetics ; Pseudomonas aeruginosa/metabolism ; RNA Polymerase Sigma 54/genetics
Chemical Substances	Glutamic Acid (3KX376GY7L) ; RNA Polymerase Sigma 54 (EC 2.7.7.6)
Language	English
Publishing date	2021-03-15
Publishing country	England
Document type	Journal Article ; Research Support, N.I.H., Extramural
ISSN	1471-2180
ISSN (online)	1471-2180
DOI	10.1186/s12866-021-02145-x
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Article ; Online: Relative expression of genes of terpene metabolism in different tissues of Artemisia annua L.

Olofsson, Linda / Engström, Alexander / Lundgren, Anneli / Brodelius, Peter E

BMC plant biology

2011 Volume 11, Page(s) 45

Abstract: Background: Recently, Artemisia annua L. (annual or sweet wormwood) has received increasing ...

Abstract	Background: Recently, Artemisia annua L. (annual or sweet wormwood) has received increasing attention due to the fact that the plant produces the sesquiterpenoid endoperoxide artemisinin, which today is widely used for treatment of malaria. The plant produces relatively small amounts of artemisinin and a worldwide shortage of the drug has led to intense research in order to increase the yield of artemisinin. In order to improve our understanding of terpene metabolism in the plant and to evaluate the competition for precursors, which may influence the yield of artemisinin, we have used qPCR to estimate the expression of 14 genes of terpene metabolism in different tissues. Results: The four genes of the artemisinin biosynthetic pathway (amorpha-4,11-diene synthase, amorphadiene-12-hydroxylase, artemisinic aldehyde ∆11(13) reductase and aldehyde dehydrogenase 1) showed remarkably higher expression (between ~40- to ~500-fold) in flower buds and young leaves compared to other tissues (old leaves, stems, roots, hairy root cultures). Further, dihydroartemisinic aldehyde reductase showed a very high expression only in hairy root cultures. Germacrene A and caryophyllene synthase were mostly expressed in young leaves and flower buds while epi-cedrol synthase was highly expressed in old leaves. 3-Hydroxy-3-methyl-glutaryl coenzyme A reductase exhibited lower expression in old leaves compared to other tissues. Farnesyldiphosphate synthase, squalene synthase, and 1-deoxy-D-xylulose-5-phosphate reductoisomerase showed only modest variation in expression in the different tissues, while expression of 1-deoxy-D-xylulose-5-phosphate synthase was 7-8-fold higher in flower buds and young leaves compared to old leaves. Conclusions: Four genes of artemisinin biosynthesis were highly expressed in flower buds and young leaves (tissues showing a high density of glandular trichomes). The expression of dihydroartemisinic aldehyde reductase has been suggested to have a negative effect on artemisinin production through reduction of dihydroartemisinic aldehyde to dihydroartemisinic alcohol. However, our results show that this enzyme is expressed only at low levels in tissues producing artemisinin and consequently its effect on artemisinin production may be limited. Finally, squalene synthase but not other sesquiterpene synthases appears to be a significant competitor for farnesyl diphosphate in artemisinin-producing tissues.
MeSH term(s)	Aldehyde Dehydrogenase 1 Family ; Alkyl and Aryl Transferases/genetics ; Alkyl and Aryl Transferases/metabolism ; Artemisia annua/enzymology ; Artemisia annua/genetics ; Artemisinins/metabolism ; Gene Expression Profiling ; Gene Expression Regulation, Plant ; Isoenzymes/genetics ; Isoenzymes/metabolism ; Oxidoreductases/genetics ; Oxidoreductases/metabolism ; Plant Proteins/genetics ; Plant Proteins/metabolism ; RNA, Plant/genetics ; Retinal Dehydrogenase/genetics ; Retinal Dehydrogenase/metabolism
Chemical Substances	Artemisinins ; Isoenzymes ; Plant Proteins ; RNA, Plant ; artemisinin (9RMU91N5K2) ; Oxidoreductases (EC 1.-) ; artemisinic aldehyde delta11(13) reductase, Artemisia annua (EC 1.-) ; Aldehyde Dehydrogenase 1 Family (EC 1.2.1) ; Retinal Dehydrogenase (EC 1.2.1.36) ; Alkyl and Aryl Transferases (EC 2.5.-) ; amorpha-4,11-diene synthase (EC 2.5.1.-)
Language	English
Publishing date	2011-03-09
Publishing country	England
Document type	Journal Article
ISSN	1471-2229
ISSN (online)	1471-2229
DOI	10.1186/1471-2229-11-45
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Article ; Online: Alterations in plasma L-arginine and methylarginines in heart failure and after heart transplantation.

Lundgren, Jakob / Sandqvist, Anna / Hedeland, Mikael / Bondesson, Ulf / Wikström, Gerhard / Rådegran, Göran

Scandinavian cardiovascular journal : SCJ

2018 Volume 52, Issue 4, Page(s) 196–204

Abstract: ... at the evaluations. Plasma concentrations of ADMA, SDMA, L-Arginine, L-Ornithine and L-Citrulline were analyzed ... at each evaluation.: Results: In comparison to controls, the plasma L-Arginine concentration was low and ADMA high ... in HF patients, resulting in low L-Arginine/ADMA-ratio pre-HT. Already four weeks after HT L ...

Abstract	Objective: Endothelial function, including the nitric oxide (NO)-pathway, has previously been extensively investigated in heart failure (HF). In contrast, studies are lacking on the NO pathway after heart transplantation (HT). We therefore investigated substances in the NO pathway prior to and after HT in relation to hemodynamic parameters. Design: 12 patients (median age 50.0 yrs, 2 females), heart transplanted between June 2012 and February 2014, evaluated at our hemodynamic lab, at rest, prior to HT, as well as four weeks and six months after HT were included. All patients had normal left ventricular function post-operatively and none had post-operative pulmonary hypertension or acute cellular rejection requiring therapy at the evaluations. Plasma concentrations of ADMA, SDMA, L-Arginine, L-Ornithine and L-Citrulline were analyzed at each evaluation. Results: In comparison to controls, the plasma L-Arginine concentration was low and ADMA high in HF patients, resulting in low L-Arginine/ADMA-ratio pre-HT. Already four weeks after HT L-Arginine was normalized whereas ADMA remained high. Consequently the L-Arginine/ADMA-ratio improved, but did not normalize. The biomarkers remained unchanged at the six-month evaluation and the L-Arginine/ADMA-ratio correlated inversely to pulmonary vascular resistance (PVR) six months post-HT. Conclusions: Plasma L-Arginine concentrations normalize after HT. However, as ADMA is unchanged, the L-Arginine/ADMA-ratio remained low and correlated inversely to PVR. Together these findings suggest that (i) the L-Arginine/ADMA-ratio may be an indicator of pulmonary vascular tone after HT, and that (ii) NO-dependent endothelial function is partly restored after HT. Considering the good postoperative outcome, the biomarker levels may be considered "normal" after HT.
MeSH term(s)	Arginine/analogs & derivatives ; Arginine/blood ; Biomarkers/blood ; Citrulline/blood ; Endothelium, Vascular/metabolism ; Endothelium, Vascular/physiopathology ; Female ; Heart Failure/blood ; Heart Failure/diagnosis ; Heart Failure/physiopathology ; Heart Failure/surgery ; Heart Transplantation ; Hemodynamics ; Humans ; Male ; Middle Aged ; Nitric Oxide/metabolism ; Ornithine/blood ; Prospective Studies ; Time Factors ; Treatment Outcome
Chemical Substances	Biomarkers ; Citrulline (29VT07BGDA) ; Nitric Oxide (31C4KY9ESH) ; symmetric dimethylarginine (49787G1ULV) ; N,N-dimethylarginine (63CV1GEK3Y) ; Arginine (94ZLA3W45F) ; Ornithine (E524N2IXA3)
Language	English
Publishing date	2018-04-12
Publishing country	England
Document type	Journal Article
ZDB-ID	1379906-x
ISSN	1651-2006 ; 1401-7431
ISSN (online)	1651-2006
ISSN	1401-7431
DOI	10.1080/14017431.2018.1459823
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Article ; Online: Antifungal effects of Conyza bonariensis (L.) Cronquist essential oil against pathogenic Colletotrichum musae and its incorporation in gum Arabic coating to reduce anthracnose development in banana during storage.

Lundgren, Giovanna Alencar / Braga, Selma Dos Passos / de Albuquerque, Thatyane Mariano Rodrigues / Árabe Rimá de Oliveira, Katarine / Tavares, Josean Fechine / Vieira, Willie Anderson Dos Santos / Câmara, Marcos Paz Saraiva / de Souza, Evandro Leite

Journal of applied microbiology

2021 Volume 132, Issue 1, Page(s) 547–561

Abstract: Aim: This study evaluated the inhibitory effects on mycelial growth and damage on membrane integrity and enzymatic activity caused by Conyza bonariensis essential oil (CBEO) on distinct pathogenic Colletotrichum musae isolates, as well as the preventive ...

Abstract	Aim: This study evaluated the inhibitory effects on mycelial growth and damage on membrane integrity and enzymatic activity caused by Conyza bonariensis essential oil (CBEO) on distinct pathogenic Colletotrichum musae isolates, as well as the preventive and curative effects of coatings with gum Arabic (GA) and CBEO to reduce anthracnose development in banana during room temperature storage. The effects of GA-CBEO coatings on some physicochemical parameters of banana were investigated during room temperature storage. Method and results: CBEO (0.4-1 μl ml Conclusion: The application of GA-CBEO coatings is effective to delay the anthracnose development in banana during storage, which should help to reduce the amount of fungicides used to control postharvest diseases in this fruit. Significance and impact of the study: This is the first study showing the efficacy of coatings formulated with GA and CBEO to delay the development of anthracnose in banana, as well as to decrease alterations in physicochemical parameters indicative of postharvest quality of this fruit during storage. In a practical point of view, GA-CBEO coatings could be innovative strategies to delay the anthracnose development and postharvest losses in banana.
MeSH term(s)	Antifungal Agents/pharmacology ; Colletotrichum ; Conyza ; Gum Arabic ; Musa ; Oils, Volatile/pharmacology
Chemical Substances	Antifungal Agents ; Oils, Volatile ; Gum Arabic (9000-01-5)
Language	English
Publishing date	2021-08-10
Publishing country	England
Document type	Journal Article
ZDB-ID	1358023-1
ISSN	1365-2672 ; 1364-5072
ISSN (online)	1365-2672
ISSN	1364-5072
DOI	10.1111/jam.15244
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Article ; Online: Plasma L-arginine levels distinguish pulmonary arterial hypertension from left ventricular systolic dysfunction.

Sandqvist, Anna / Schneede, Jörn / Kylhammar, David / Henrohn, Dan / Lundgren, Jakob / Hedeland, Mikael / Bondesson, Ulf / Rådegran, Göran / Wikström, Gerhard

Heart and vessels

2018 Volume 33, Issue 3, Page(s) 255–263

Abstract: ... by an imbalance of vasoactive substances and remodeling of pulmonary vasculature. Nitric oxide, formed from L ... plasma concentrations of L-arginine, asymmetric dimethylarginine (ADMA), and symmetric dimethylarginine ... Physical examinations were obtained and blood samples were collected. Plasma levels of ADMA, SDMA, L-arginine, L ...

Abstract	Pulmonary arterial hypertension (PAH) is a life-threatening condition, characterized by an imbalance of vasoactive substances and remodeling of pulmonary vasculature. Nitric oxide, formed from L-arginine, is essential for homeostasis and smooth muscle cell relaxation in PAH. Our aim was to compare plasma concentrations of L-arginine, asymmetric dimethylarginine (ADMA), and symmetric dimethylarginine (SDMA) in PAH compared to left ventricular systolic dysfunction (LVSD) and healthy subjects. This was an observational, multicenter study comparing 21 patients with PAH to 14 patients with LVSD and 27 healthy subjects. Physical examinations were obtained and blood samples were collected. Plasma levels of ADMA, SDMA, L-arginine, L-ornithine, and L-citrulline were analyzed using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Plasma levels of ADMA and SDMA were higher, whereas L-arginine and L-arginine/ADMA ratio were lower in PAH patients compared to healthy subjects (p < 0.001). Patients with PAH also had lower levels of L-arginine than patients with LVSD (p < 0.05). L-Arginine correlated to 6 min walking distance (6MWD) (r
MeSH term(s)	Aged ; Aged, 80 and over ; Arginine/blood ; Biomarkers/blood ; Chromatography, Liquid ; Diagnosis, Differential ; Female ; Humans ; Hypertension, Pulmonary/blood ; Hypertension, Pulmonary/diagnosis ; Hypertension, Pulmonary/physiopathology ; Male ; Middle Aged ; Tandem Mass Spectrometry ; Ventricular Dysfunction, Left/blood ; Ventricular Dysfunction, Left/diagnosis ; Ventricular Dysfunction, Left/physiopathology ; Ventricular Function, Left/physiology
Chemical Substances	Biomarkers ; Arginine (94ZLA3W45F)
Language	English
Publishing date	2018-03
Publishing country	Japan
Document type	Journal Article ; Multicenter Study ; Observational Study
ZDB-ID	89678-0
ISSN	1615-2573 ; 0910-8327 ; 0935-736X
ISSN (online)	1615-2573
ISSN	0910-8327 ; 0935-736X
DOI	10.1007/s00380-017-1055-7
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Article: Antifungal effects of Conyza bonariensis (L.) Cronquist essential oil against pathogenic Colletotrichum musae and its incorporation in gum Arabic coating to reduce anthracnose development in banana during storage

Lundgren, Giovanna Alencar / Braga, Selma dos Passos / de Albuquerque, Thatyane Mariano Rodrigues / Árabe Rimá de Oliveira, Katarine / Tavares, Josean Fechine / Vieira, Willie Anderson dos Santos / Câmara, Marcos Paz Saraiva / de Souza¹, Evandro Leite

Journal of applied microbiology. 2022 Jan., v. 132, no. 1

2022

Abstract: AIM: This study evaluated the inhibitory effects on mycelial growth and damage on membrane integrity and enzymatic activity caused by Conyza bonariensis essential oil (CBEO) on distinct pathogenic Colletotrichum musae isolates, as well as the preventive ... ...

Abstract	AIM: This study evaluated the inhibitory effects on mycelial growth and damage on membrane integrity and enzymatic activity caused by Conyza bonariensis essential oil (CBEO) on distinct pathogenic Colletotrichum musae isolates, as well as the preventive and curative effects of coatings with gum Arabic (GA) and CBEO to reduce anthracnose development in banana during room temperature storage. The effects of GA‐CBEO coatings on some physicochemical parameters of banana were investigated during room temperature storage. METHOD AND RESULTS: CBEO (0.4–1 μl ml⁻¹) inhibited the mycelial growth of C. musae isolates in laboratory media. The exposure of C. musae conidia to CBEO (0.6 μl ml⁻¹) for 3 and 5 days resulted in high percentages of conidia with damaged cytoplasmic membrane and without enzymatic activity. Coatings with GA (0.1 mg ml⁻¹) and CBEO (0.4–1 μl ml⁻¹) reduced the anthracnose development in banana artificially contaminated with C. musae during storage. In most cases, the disease severity indexes found for GA‐CBEO‐coated banana were lower than or similar to those for banana treated with commercial fungicide. GA‐CBEO‐coated banana had reduced alterations in physicochemical parameters during storage, indicating more prolonged storability. CONCLUSION: The application of GA‐CBEO coatings is effective to delay the anthracnose development in banana during storage, which should help to reduce the amount of fungicides used to control postharvest diseases in this fruit. SIGNIFICANCE AND IMPACT OF THE STUDY: This is the first study showing the efficacy of coatings formulated with GA and CBEO to delay the development of anthracnose in banana, as well as to decrease alterations in physicochemical parameters indicative of postharvest quality of this fruit during storage. In a practical point of view, GA‐CBEO coatings could be innovative strategies to delay the anthracnose development and postharvest losses in banana.
Keywords	Colletotrichum musae ; Conyza bonariensis ; ambient temperature ; anthracnose ; bananas ; cell membranes ; conidia ; disease severity ; enzyme activity ; essential oils ; fruits ; fungicides ; gum arabic ; microbiology ; mycelium ; storage quality
Language	English
Dates of publication	2022-01
Size	p. 547-561.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	1358023-1
ISSN	1365-2672 ; 1364-5072
ISSN (online)	1365-2672
ISSN	1364-5072
DOI	10.1111/jam.15244
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Article ; Online: Combined chitosan and Cympobogon citratus (D.C. ex Nees) Stapf. essential oil to inhibit the fungal phytopathogen Paramyrothecium roridum and control crater rot in melon (Cucumis melo L.).

Macedo, Samara Alves / Lundgren, Giovanna Alencar / Dos Passos Braga, Selma / de Souza, Evandro Leite / Câmara, Marcos Paz Saraiva

Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology

2020 Volume 51, Issue 4, Page(s) 2057–2065

Abstract: ... essential oil (CCEO) to inhibit the fungal phytopathogen Paramyrothecium roridum L. Lombard & Crous and ... control crater rot in melon (Cucumis melo L.). Effects of several Chi and CCEO concentrations ...

Abstract	This study evaluated the efficacy of combined chitosan (Chi) and Cymbopogon citratus (DC) Stapf. essential oil (CCEO) to inhibit the fungal phytopathogen Paramyrothecium roridum L. Lombard & Crous and control crater rot in melon (Cucumis melo L.). Effects of several Chi and CCEO concentrations to inhibit the growth of four P. roridum isolates in vitro, as well as the type of interaction of some combined concentrations of Chi and CCEO was evaluated. Effects of coatings with combined concentrations of Chi and CCEO on development of crater rot lesions in melon artificially inoculated with P. roridum during storage (15 days, 25 °C) were measured. Chi (2.5, 3.75, 5, and 6.75 mg/mL) and CCEO (0.3 and 0.6 μL/mL) led to growth inhibition of the four examined P. roridum isolates. Combinations of Chi (5 mg/mL) and CCEO (0.15 and 0.3 μL/mL) had additive interaction to inhibit P. roridum. Coatings with additive combined concentrations of Chi and CCEO decreased the development and severity of carter rot lesions in melon during room storage regardless of the inoculated P. roridum isolate. Therefore, application of coatings formulated with combined concentrations of Chi and CCEO could be alternative strategies to control crater rot caused by P. roridum in melon and decrease synthetic fungicide use in this fruit.
MeSH term(s)	Chitosan/pharmacology ; Cucumis melo/microbiology ; Cymbopogon/chemistry ; Food Microbiology ; Food Storage ; Fungicides, Industrial/pharmacology ; Hypocreales/drug effects ; Hypocreales/pathogenicity ; Microbial Sensitivity Tests ; Oils, Volatile/pharmacology ; Plant Extracts/pharmacology
Chemical Substances	Fungicides, Industrial ; Oils, Volatile ; Plant Extracts ; Chitosan (9012-76-4)
Language	English
Publishing date	2020-09-11
Publishing country	Brazil
Document type	Journal Article
ZDB-ID	2017175-4
ISSN	1678-4405 ; 1517-8382
ISSN (online)	1678-4405
ISSN	1517-8382
DOI	10.1007/s42770-020-00378-y
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Article ; Online: Nutritional status of honey bee (Apis mellifera L.) workers across an agricultural land-use gradient

Matthew D. Smart / Clint R. V. Otto / Jonathan G. Lundgren

Scientific Reports, Vol 9, Iss 1, Pp 1-

2019 Volume 10

Abstract: Abstract Land use, habitat, and forage quality have emerged as critical factors influencing the health, productivity, and survival of honey bee colonies. However, characterization of the mechanistic relationship between differential land-use conditions ... ...

Abstract	Abstract Land use, habitat, and forage quality have emerged as critical factors influencing the health, productivity, and survival of honey bee colonies. However, characterization of the mechanistic relationship between differential land-use conditions and ultimate outcomes for honey bee colonies has been elusive. We assessed the physiological health of individual worker honey bees in colonies stationed across a gradient of agricultural land use to ask whether indicators of nutritional physiology including glycogen, total sugar, lipids, and protein were associated with land-use conditions over the growing season and colony population size the subsequent spring during almond pollination. Across the observed land-use gradient, we found that September lipid levels related to growing-season land use, with honey bees from apiaries surrounded by more favorable land covers such as grassland, pasture, conservation land, and fallow fields having greater lipid reserves. Further, we observed a significant relationship between total protein during September and population size of colonies during almond pollination the following February. We demonstrate and discuss the utility of quantifying nutritional biomarkers to infer land-use quality and predict colony population size.
Keywords	Medicine ; R ; Science ; Q
Subject code	333
Language	English
Publishing date	2019-11-01T00:00:00Z
Publisher	Nature Publishing Group
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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