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Article: Bacillus subtilis MBI600 Promotes Growth of Tomato Plants and Induces Systemic Resistance Contributing to the Control of Soilborne Pathogens

Samaras, Anastasios / Roumeliotis, Efstathios / Ntasiou, Panagiota / Karaoglanidis, George

Plants. 2021 May 31, v. 10, no. 6

2021

Abstract: Bacillus subtilis MBI600 (Bs MBI600) is a recently commercialized plant-growth-promoting rhizobacterium (PGPR). In this study, we investigated the effects of Bs MBI600 on the growth of tomato and its biocontrol efficacy against three main soilborne ... ...

Abstract	Bacillus subtilis MBI600 (Bs MBI600) is a recently commercialized plant-growth-promoting rhizobacterium (PGPR). In this study, we investigated the effects of Bs MBI600 on the growth of tomato and its biocontrol efficacy against three main soilborne tomato pathogens (Rhizoctonia solani, Pythium ultimum, and Fusarium oxysporum f.sp. radicis-lycopersici-Forl). Furthermore, the root colonization ability of the Bs MBI600 strain on tomato roots was analyzed in vivo with a yellow fluorescence protein (yfp)-labeled strain, revealing strong colonization ability, which was affected by the root growth substrate. The application of Bs MBI600 on tomato plants resulted in significant increases in shoot and root lengths. Transcriptional activation of two auxin-related genes (SiPin6 and SiLax4) was observed. Single applications of Bs MBI600 on inoculated tomato plants with pathogens revealed satisfactory control efficacy compared to chemical treatment. Transcriptomic analysis of defense-related genes used as markers of the salicylic acid (SA) signaling pathway (PR-1A and GLUA) or jasmonic acid/ethylene (JA/ET) signaling pathway (CHI3, LOXD, and PAL) showed increased transcription patterns in tomato plants treated with Bs MBI600 or Forl. These results indicate the biochemical and molecular mechanisms that are activated after the application of Bs MBI600 on tomato plants and suggest that induction of systemic resistance (ISR) occurred.
Keywords	Bacillus subtilis ; Fusarium oxysporum ; Pythium ultimum ; Thanatephorus cucumeris ; chemical treatment ; colonizing ability ; ethylene ; fluorescence ; jasmonic acid ; plant growth-promoting rhizobacteria ; root growth ; salicylic acid ; tomatoes ; transcriptional activation ; transcriptomics
Language	English
Dates of publication	2021-0531
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2704341-1
ISSN	2223-7747
ISSN	2223-7747
DOI	10.3390/plants10061113
Database	NAL-Catalogue (AGRICOLA)

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Article: Apple Fruit Core Rot Agents in Greece and Control with Succinate Dehydrogenase Inhibitor Fungicides

Ntasiou, Panagiota / Samaras, Anastasios / Karaoglanidis, George

Plant disease. 2021 Oct. 29, v. 105, no. 10

2021

Abstract: Core rot is a major postharvest disease of apple fruit that occurs worldwide and is caused by a complex of fungi. Despite the importance of the disease, little is known about its etiology in Greece. In this study, 325 fungal isolates obtained from fruit ... ...

Abstract	Core rot is a major postharvest disease of apple fruit that occurs worldwide and is caused by a complex of fungi. Despite the importance of the disease, little is known about its etiology in Greece. In this study, 325 fungal isolates obtained from fruit with core rot symptoms were identified to the species level using morphological characteristics and phylogenetic analysis. Fungal identification revealed that Alternaria alternata was the major disease agent (57.8% of the isolates), followed by Kalmusia variispora (27.8%), Botrytis cinerea (12%), and Fusarium spp. (3.3%). K. variispora is reported for the first time as an agent of core rot of apple and its pathogenicity was confirmed by artificial inoculation tests. In addition to disease etiology, field experiments were performed at two different orchards for 3 consecutive years (2017 to 2019). Experiments were conducted to determine the effectiveness of several classes of fungicides and the timing of application for control of the disease. Greater efficacy was achieved when fungicides were applied at the petal fall stage (flowers fading BBCH 67), while the most effective fungicides were the succinate dehydrogenase inhibitors fluxapyroxad, fluopyram, adepidyn, and penthiopyrad. The results of this study are expected to contribute to the optimization of disease management and reduce the yield losses caused by core rot pathogens in Greece.
Keywords	Alternaria alternata ; Botrytis cinerea ; Fusarium ; apples ; disease control ; fluopyram ; fruits ; fungi ; pathogenicity ; penthiopyrad ; phylogeny ; postharvest diseases ; succinate dehydrogenase (quinone) ; Greece
Language	English
Dates of publication	2021-1029
Size	p. 3072-3081.
Publishing place	The American Phytopathological Society
Document type	Article
ZDB-ID	754182-x
ISSN	0191-2917
ISSN	0191-2917
DOI	10.1094/PDIS-11-20-2422-RE
Database	NAL-Catalogue (AGRICOLA)

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Article: Bacillus subtilis

Samaras, Anastasios / Roumeliotis, Efstathios / Ntasiou, Panagiota / Karaoglanidis, George

Plants (Basel, Switzerland)

2021 Volume 10, Issue 6

Abstract: ... Bacillus ... ...

Abstract	Bacillus subtilis
Language	English
Publishing date	2021-05-31
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2704341-1
ISSN	2223-7747
ISSN	2223-7747
DOI	10.3390/plants10061113
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Article: Apple Fruit Core Rot Agents in Greece and Control with Succinate Dehydrogenase Inhibitor Fungicides.

Ntasiou, Panagiota / Samaras, Anastasios / Karaoglanidis, George

Plant disease

2021 Volume 105, Issue 10, Page(s) 3072–3081

Abstract	Core rot is a major postharvest disease of apple fruit that occurs worldwide and is caused by a complex of fungi. Despite the importance of the disease, little is known about its etiology in Greece. In this study, 325 fungal isolates obtained from fruit with core rot symptoms were identified to the species level using morphological characteristics and phylogenetic analysis. Fungal identification revealed that
MeSH term(s)	Fruit ; Fungicides, Industrial/pharmacology ; Greece ; Malus ; Phylogeny ; Succinate Dehydrogenase/genetics ; Succinic Acid
Chemical Substances	Fungicides, Industrial ; Succinic Acid (AB6MNQ6J6L) ; Succinate Dehydrogenase (EC 1.3.99.1)
Language	English
Publishing date	2021-10-26
Publishing country	United States
Document type	Journal Article
ZDB-ID	754182-x
ISSN	0191-2917
ISSN	0191-2917
DOI	10.1094/PDIS-11-20-2422-RE
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Article: Aggressiveness and Patulin Production in

Ntasiou, Panagiota / Samaras, Anastasios / Papadakis, Emmanouil-Nikolaos / Menkissoglu-Spiroudi, Urania / Karaoglanidis, George S

Plants (Basel, Switzerland)

2023 Volume 12, Issue 6

Abstract: Penicillium ... ...

Abstract	Penicillium expansum
Language	English
Publishing date	2023-03-21
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2704341-1
ISSN	2223-7747
ISSN	2223-7747
DOI	10.3390/plants12061398
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Article: Multidrug resistance of Penicillium expansum to fungicides: whole transcriptome analysis of MDR strains reveals overexpression of efflux transporter genes

Samaras, Αnastasios / Ntasiou, Panagiota / Myresiotis, Charalampos / Karaoglanidis, George

International journal of food microbiology. 2020 Dec. 16, v. 335

2020

Abstract: Penicillium expansum is the most common apple fruit postharvest spoilage agent that causes a disease known as Blue Mold. Disease control is based on fungicide use. However, development of resistance to fungicides hampers the success of this control ... ...

Abstract	Penicillium expansum is the most common apple fruit postharvest spoilage agent that causes a disease known as Blue Mold. Disease control is based on fungicide use. However, development of resistance to fungicides hampers the success of this control method. Fungicide sensitivity monitoring studies in Greece revealed the presence of pathogen strains exhibiting simultaneous resistance to different chemically unrelated compounds (multidrug resistance, MDR). This study was initiated aiming primarily to test the hypothesis that the MDR phenotype is associated with overexpression of efflux transporter genes and to determine the fitness of the MDR isolates. The monitoring study (n = 264) and the measurements of sensitivity in terms of EC₅₀ values to 9 different compounds revealed that almost 5% of the population was of the MDR type. In the selected MDR isolates, the highest resistant factors were calculated for fludioxonil and pyraclostrobin, while the same isolates were moderately resistant to cyprodinil, thiophanate methyl and fluxapyroxad. In the resistant strains no target site mutations were detected in the target genes of each fungicide class, while in addition, a synergistic activity was observed between fungicides and the drug transporter modulator verapamil in some isolates. To obtain a direct insight on the resistance mechanism, the transcriptome of 2 MDR and 1 sensitive isolates was sequenced using Illumina HiSeq 2500 and differences in efflux transporter gene expression profile were figured out. Gene expression profiling analysis was performed before and after the exposure of fungal mycelia to fludioxonil. This analysis revealed the up-regulation of several MFS transporter genes and a limited number of ABC transporter genes either before or after the exposure to fludioxonil in the MDR isolates. Expression results for genes with the highest expression levels were verified by qRT-PCR assays. Fitness components measurements revealed that MDR isolates were of lower mycelial growth and pathogenicity compared to sensitive strains but they were producing higher number of conidia. The above mentioned data represent the first report of MDR in P. expansum associated with overexpression of drug efflux transporters and contribute to our knowledge in the mechanisms associated with fungicide resistance development in this fungal species.
Keywords	ABC transporters ; Penicillium expansum ; apples ; conidia ; control methods ; cyprodinil ; disease control ; fludioxonil ; food microbiology ; fungicide resistance ; molds (fungi) ; multiple drug resistance ; mycelium ; pathogenicity ; pathogens ; phenotype ; pyraclostrobin ; spoilage ; synergism ; thiophanate-methyl ; transcriptome ; transcriptomics ; verapamil ; Greece
Language	English
Dates of publication	2020-1216
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	87122-9
ISSN	1879-3460 ; 0168-1605
ISSN (online)	1879-3460
ISSN	0168-1605
DOI	10.1016/j.ijfoodmicro.2020.108896
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Multidrug resistance of Penicillium expansum to fungicides: whole transcriptome analysis of MDR strains reveals overexpression of efflux transporter genes.

Samaras, Αnastasios / Ntasiou, Panagiota / Myresiotis, Charalampos / Karaoglanidis, George

International journal of food microbiology

2020 Volume 335, Page(s) 108896

Abstract	Penicillium expansum is the most common apple fruit postharvest spoilage agent that causes a disease known as Blue Mold. Disease control is based on fungicide use. However, development of resistance to fungicides hampers the success of this control method. Fungicide sensitivity monitoring studies in Greece revealed the presence of pathogen strains exhibiting simultaneous resistance to different chemically unrelated compounds (multidrug resistance, MDR). This study was initiated aiming primarily to test the hypothesis that the MDR phenotype is associated with overexpression of efflux transporter genes and to determine the fitness of the MDR isolates. The monitoring study (n = 264) and the measurements of sensitivity in terms of EC
MeSH term(s)	Drug Resistance, Multiple, Fungal/genetics ; Fruit/microbiology ; Fungal Proteins/genetics ; Fungicides, Industrial/pharmacology ; Gene Expression Profiling ; Gene Expression Regulation, Fungal ; Malus/microbiology ; Membrane Transport Proteins/genetics ; Mycelium/drug effects ; Mycelium/genetics ; Mycelium/growth & development ; Mycelium/pathogenicity ; Penicillium/drug effects ; Penicillium/genetics ; Penicillium/growth & development ; Penicillium/pathogenicity
Chemical Substances	Fungal Proteins ; Fungicides, Industrial ; Membrane Transport Proteins
Language	English
Publishing date	2020-09-29
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	87122-9
ISSN	1879-3460 ; 0168-1605
ISSN (online)	1879-3460
ISSN	0168-1605
DOI	10.1016/j.ijfoodmicro.2020.108896
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Article ; Online: Ultrasound, Clinical, and Electrophysiological Findings in Persistent Carpal Tunnel Syndrome.

Kerasnoudis, Antonios / Barmpalios, Georgios / Ntasiou, Panagiota / Lakkos, Thomas / Venouziou, Aaron

Journal of neuroimaging : official journal of the American Society of Neuroimaging

2018 Volume 29, Issue 2, Page(s) 218–222

Abstract: Background and purpose: We present the clinical, electrophysiological, and nerve ultrasound findings in cases of persistent carpal tunnel syndrome (PCTS).: Methods: Eighteen PCTS patients underwent evaluation with the Boston Carpal Tunnel Syndrome ... ...

Abstract	Background and purpose: We present the clinical, electrophysiological, and nerve ultrasound findings in cases of persistent carpal tunnel syndrome (PCTS). Methods: Eighteen PCTS patients underwent evaluation with the Boston Carpal Tunnel Syndrome Questionnaire (BCTSQ), electrophysiology, and nerve ultrasound with a mean of 3.5 months (SD ± 1.4) after open surgery. Results: PCTS patients showed a mean symptom severity scale score of 3.1 (SD ± 1.1) and functional severity scale score of 3.2 (SD ± 0.9) in BCTSQ. Nerve conduction studies revealed axonal affection of the median nerve in 13/18 patients, ultrasound showed disturbed echogenicity in all patients, a pathological wrist to forearm ratio in 16/18 patients, and cross-sectional area enlargement of the median nerve at the distal wrist crease in 12/18 patients. Ultrasound documented scar tissue formation (in 12/18 patients), incomplete release of retinaculum flexorum (in 4/18 patients), and neuroma of the median nerve (in 2/18 patients) as PCTS cause. Conclusion: Our data show significant functional disability, axonal nerve damage, and scar tissue formation as common PCTS causes.
MeSH term(s)	Adult ; Carpal Tunnel Syndrome/diagnostic imaging ; Carpal Tunnel Syndrome/physiopathology ; Cross-Sectional Studies ; Female ; Humans ; Male ; Median Nerve/diagnostic imaging ; Median Nerve/physiopathology ; Middle Aged ; Neural Conduction/physiology ; Retrospective Studies ; Severity of Illness Index ; Surveys and Questionnaires ; Ultrasonography/methods
Language	English
Publishing date	2018-11-23
Publishing country	United States
Document type	Journal Article
ZDB-ID	1071724-9
ISSN	1552-6569 ; 1051-2284
ISSN (online)	1552-6569
ISSN	1051-2284
DOI	10.1111/jon.12585
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Article: Synthesis and Characterization of Novel Copper Nanoparticles for the Control of Leaf Spot and Anthracnose Diseases of Olive.

Ntasiou, Panagiota / Kaldeli Kerou, Alexandra / Karamanidou, Theodora / Vlachou, Afrodite / Tziros, George T / Tsouknidas, Alexander / Karaoglanidis, George S

Nanomaterials (Basel, Switzerland)

2021 Volume 11, Issue 7

Abstract: Olive crop is frequently treated with copper fungicides to combat foliar and fruit diseases such as olive leaf spot caused ... ...

Abstract	Olive crop is frequently treated with copper fungicides to combat foliar and fruit diseases such as olive leaf spot caused by
Language	English
Publishing date	2021-06-24
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662255-5
ISSN	2079-4991
ISSN	2079-4991
DOI	10.3390/nano11071667
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Article ; Online: Prognostic Value of Nerve Ultrasound and Electrophysiological Findings in Saturday Night Palsy.

Kerasnoudis, Antonios / Ntasiou, Panagiota / Ntasiou, Efthymia

Journal of neuroimaging : official journal of the American Society of Neuroimaging

2016 Volume 27, Issue 4, Page(s) 428–432

Abstract: Background and purpose: We report on the prognostic role of the cross-sectional area (CSA) enlargement and conduction block (CB) in radial neuropathy (Saturday night palsy [SNP]).: Methods: Reference CSA values were defined in 30 healthy subjects. ... ...

Abstract	Background and purpose: We report on the prognostic role of the cross-sectional area (CSA) enlargement and conduction block (CB) in radial neuropathy (Saturday night palsy [SNP]). Methods: Reference CSA values were defined in 30 healthy subjects. Twenty-four patients with SNP underwent evaluation (Thessaloniki Hypesthesia Score [THS], Medical Research Council [MRC], ultrasound, electrophysiology). All patients were followed up 3 months after initial presentation. Results: During initial evaluation, 13 patients showed pathological CSA (pCSA) and 11 normal CSA (nCSA). Fourteen patients showed conduction block (pCB) and 10 showed no conduction block (nCB). The site of lesion was recognized in 11 patients in the spiral groove, in 8 patients in the distal main trunk, just before the division to motor and sensory branch, while 5 patients showed a double site of lesion (spiral groove and supinators' canal). During follow-up, the pCSA group showed a mean MRC score of 2.8 (SD ± .7) and a THS of 1.8 (SD ± .4), while the nCSA group showed a mean MRC score of 4.1 (SD ± .9) and a THS of .7 (SD ± .3) (P < .001) (Table 4). On the other hand, the pCB group showed a mean MRC score of 3.7 (SD ± 1.1) and a THS of 2.7 (SD ± .9), and the nCB group showed a mean MRC score of 4.2 (SD ± 1.2) and a THS of 1.7 (SD ± .9) (P = .355, P = .013, respectively). Conclusions: The CSA enlargement, but not the CB, seems to have a negative prognostic role in patients with SNP.
MeSH term(s)	Adult ; Cross-Sectional Studies ; Electrodiagnosis ; Female ; Humans ; Male ; Middle Aged ; Neural Conduction/physiology ; Peripheral Nerves/diagnostic imaging ; Peripheral Nerves/physiopathology ; Prognosis ; Radial Neuropathy/diagnosis ; Radial Neuropathy/diagnostic imaging ; Radial Neuropathy/physiopathology ; Ultrasonography
Language	English
Publishing date	2016-12-05
Publishing country	United States
Document type	Journal Article
ZDB-ID	1071724-9
ISSN	1552-6569 ; 1051-2284
ISSN (online)	1552-6569
ISSN	1051-2284
DOI	10.1111/jon.12414
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