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  1. Article: Baicalin attenuates diet-induced obesity partially through promoting thermogenesis in adipose tissue.

    Li, Hongdi / Tang, Shouyan

    Obesity research & clinical practice

    2021  Volume 15, Issue 5, Page(s) 485–490

    Abstract: Background: Adipose tissues have essential roles on energy homeostasis and the development of metabolic syndrome and obesity, they have become critical targets for treating obesity and metabolic disorders. Baicalin is a flavonoid that derived from the ... ...

    Abstract Background: Adipose tissues have essential roles on energy homeostasis and the development of metabolic syndrome and obesity, they have become critical targets for treating obesity and metabolic disorders. Baicalin is a flavonoid that derived from the root of Scutellaria baicalensis, and it has been reported to take part in the regulation of adipocyte function. All these highlighted the potential of baicalin in the regulation of fat accumulation and obesity. Yet the impact of baicalin on thermogenic function of adipocytes remains to be deciphered.
    Objective: This study aims to explore the anti-obesity effects of baicalin.
    Materials & methods: The level of mRNA was detected by qRT-PCR and the protein expression level was examined by western blot. H&E staining was used for the observation of the structure of adipose tissue. Serum triglyceride and insulin levels were detected by commercial test kits.
    Results: Our data demonstrated that baicalin up-regulates the expression of UCP1 and PGC1a in a dose-dependent manner in vitro. Baicalin also increases ERK phosphorylation, and the increased expression of UCP1 and PGC1a in adipocytes could be inhibited by an ERK inhibitor, U0126. Moreover, dietary baicalin ameliorates high fat diet (HFD)-induced obesity without affecting food intake. In addition, dietary baicalin inhibits adipocyte hypertrophy and enhances thermogenic gene program in sWAT and intrascapular brown adipose tissue (iBAT) in vivo.
    Discussion & conclusion: Baicalin prevents HFD-induced obesity partially through promoting adipocyte thermogenesis. Baicalin may be a promising compound against human obesity and related metabolic diseases.
    MeSH term(s) Adipose Tissue, Brown/metabolism ; Adipose Tissue, White/metabolism ; Animals ; Diet, High-Fat/adverse effects ; Energy Metabolism ; Flavonoids/metabolism ; Flavonoids/pharmacology ; Mice ; Mice, Inbred C57BL ; Obesity/drug therapy ; Obesity/etiology ; Obesity/metabolism ; Thermogenesis
    Chemical Substances Flavonoids ; baicalin (347Q89U4M5)
    Language English
    Publishing date 2021-08-28
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2274031-4
    ISSN 1878-0318 ; 1871-403X
    ISSN (online) 1878-0318
    ISSN 1871-403X
    DOI 10.1016/j.orcp.2021.08.003
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  2. Article ; Online: Structurally diverse specialized metabolites of maize and their extensive biological functions.

    Zhou, Huiwen / Hua, Juan / Li, Hongdi / Song, Xinyu / Luo, Shihong

    Journal of cellular physiology

    2023  

    Abstract: Maize originated in southern Mexico and various hybrid varieties have been bred during domestication. All maize tissues are rich in specialized plant metabolites (SPMs), which allow the plants to resist the stresses of herbivores and pathogens or ... ...

    Abstract Maize originated in southern Mexico and various hybrid varieties have been bred during domestication. All maize tissues are rich in specialized plant metabolites (SPMs), which allow the plants to resist the stresses of herbivores and pathogens or environmental factors. To date, a total of 95 terpenoids, 91 phenolics, 31 alkaloids, and 6 other types of compounds have been identified from maize. Certain volatile sesquiterpenes released by maize plants attract the natural enemies of maize herbivores and provide an indirect defensive function. Kauralexins and dolabralexins are the most abundant diterpenoids in maize and are known to regulate and stabilize the maize rhizosphere microbial community. Benzoxazinoids and benzoxazolinones are the main alkaloids in maize and are found in maize plants at the highest concentrations at the seedling stage. These two kinds of alkaloids directly resist herbivory and pathogenic infection. Phenolics enhance the cross-links between maize cell walls. Meanwhile, SPMs also regulate plant-plant relationships. In conclusion, SPMs in maize show a large diversity of chemical structures and broad-spectrum biological activities. We use these to provide ideas and information to enable the improvement of maize resistances through breeding and to promote the rapid development of the maize industry.
    Language English
    Publishing date 2023-02-06
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 3116-1
    ISSN 1097-4652 ; 0021-9541
    ISSN (online) 1097-4652
    ISSN 0021-9541
    DOI 10.1002/jcp.30955
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  3. Article ; Online: Esterification with a Long-Chain Fatty Acid Elevates the Exposure Toxicity of Tigliane Diterpenoids from

    Zhang, Jiaming / Liu, Jiayi / Li, Hongdi / Hua, Juan / Luo, Shihong

    Journal of agricultural and food chemistry

    2023  Volume 71, Issue 34, Page(s) 12730–12740

    Abstract: In this study, two tigliane diterpenoids, 12-deoxyphorbol-13-hexadecanoate and 12-deoxyphorbol-13-acetate (prostratin), were identified from the methanol extract of the roots ... ...

    Abstract In this study, two tigliane diterpenoids, 12-deoxyphorbol-13-hexadecanoate and 12-deoxyphorbol-13-acetate (prostratin), were identified from the methanol extract of the roots of
    MeSH term(s) Animals ; Phorbols ; Euphorbia ; Caenorhabditis elegans/genetics ; Esterification ; Fatty Acids ; Diterpenes/toxicity ; Palmitates
    Chemical Substances Phorbols ; prostratin (60857-08-1) ; Fatty Acids ; Diterpenes ; Palmitates
    Language English
    Publishing date 2023-08-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 241619-0
    ISSN 1520-5118 ; 0021-8561
    ISSN (online) 1520-5118
    ISSN 0021-8561
    DOI 10.1021/acs.jafc.3c03460
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  4. Article ; Online: Chemical Structure Diversity and Extensive Biological Functions of Specialized Metabolites in Rice.

    Zhou, Huiwen / Zhang, Jinjin / Bai, Liping / Liu, Jiayi / Li, Hongdi / Hua, Juan / Luo, Shihong

    International journal of molecular sciences

    2023  Volume 24, Issue 23

    Abstract: Rice ( ...

    Abstract Rice (
    MeSH term(s) Oryza/metabolism ; Terpenes/metabolism ; Diterpenes/metabolism ; Plants/metabolism ; Alkaloids/metabolism ; Herbivory
    Chemical Substances Terpenes ; Diterpenes ; Alkaloids
    Language English
    Publishing date 2023-12-02
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms242317053
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  5. Article ; Online: Root exudate sesquiterpenoids from the invasive weed Ambrosia trifida regulate rhizospheric Proteobacteria.

    Li, Hongdi / Kang, Zongli / Hua, Juan / Feng, Yulong / Luo, Shihong

    The Science of the total environment

    2022  Volume 834, Page(s) 155263

    Abstract: The adaption of Ambrosia trifida to the environment to which it has been introduced is crucial to its successful invasion. Microbial diversity analyses suggested that the abundance of Proteobacteria was relatively high in rhizospheric soil surrounding A. ...

    Abstract The adaption of Ambrosia trifida to the environment to which it has been introduced is crucial to its successful invasion. Microbial diversity analyses suggested that the abundance of Proteobacteria was relatively high in rhizospheric soil surrounding A. trifida roots. Three of these bacterial taxa were isolated and identified as Acinetobacter sp. LHD-1, Pseudomonas sp. LHD-12, and Enterobacter sp. LHD-19. Furthermore, three sesquiterpenoids were authenticated as the main metabolites in the root exudates of A. trifida, and include one new germacrane sesquiterpenoid (1E,4E)-germacrdiene-6β,15-diol (2) and two known sesquiterpenoids, (E)-4β,5α-epoxy-7αH-germacr-1(10)-ene-2β,6β-diol (1) and (2R)-δ-cadin-4-ene-2,10-diol (3). Their chemical structures were elucidated using NMR spectroscopy and single crystal X-ray diffraction analyses. In UPLC-MS/MS analyses, compounds 1-3 showed values of 10.29 ± 2.21, 0.02 ± 0.01, and 0.78 ± 0.52 μg/g FW, respectively, in A. trifida rhizospheric soil. Interestingly, those compounds were able to inhibit the growth of Acinetobacter sp. LHD-1 and promote the growth of Enterobacter sp. LHD-19 where concentrations were close to those secreted into rhizospheric soil. Furthermore, the rhizospheric bacteria Acinetobacter sp. LHD-1 and Enterobacter sp. LHD-19 were able to regulate the growth of A. trifida seedlings in potted planting verification experiments. Interestingly, root exudate sesquiterpenoids could also improve the concentration of IAA in Enterobacter sp. LHD-19, indicating that this bacterium may promote plant growth through regulating the IAA pathway. These results provided new evidence for the rapid adaptation of plants to new environments, allowing their invasive behavior.
    MeSH term(s) Ambrosia ; Bacteria ; Chromatography, Liquid ; Exudates and Transudates ; Plant Roots/microbiology ; Plant Weeds ; Proteobacteria ; Sesquiterpenes ; Soil/chemistry ; Soil Microbiology ; Tandem Mass Spectrometry
    Chemical Substances Sesquiterpenes ; Soil
    Language English
    Publishing date 2022-04-18
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2022.155263
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  6. Article ; Online: Inoculation with carbofuran-degrading rhizobacteria promotes maize growth through production of IAA and regulation of the release of plant-specialized metabolites.

    Ma, Caihong / Hua, Juan / Li, Hongdi / Zhang, Jiaming / Luo, Shihong

    Chemosphere

    2022  Volume 307, Issue Pt 3, Page(s) 136027

    Abstract: Toxic residues of the insecticide carbofuran in farmland is an urgent problem, and high concentrations of carbofuran have been found in the rhizoshperic soil of maize treated with seed coating agents 120-180 days after planting. Using an enrichment co- ... ...

    Abstract Toxic residues of the insecticide carbofuran in farmland is an urgent problem, and high concentrations of carbofuran have been found in the rhizoshperic soil of maize treated with seed coating agents 120-180 days after planting. Using an enrichment co-culture method, we identify a bacterial strain obtained from these carbofuran-contaminated rhizosphere soils as Leclercia adecarboxylata MCH-1. This strain exhibited a significant ability to degrade both carbofuran and 3-keto carbofuran, with total degradation of 55.6 ± 4.6% and 75.7 ± 3.4%, respectively, 24 h following start of co-culture. Further activity screening revealed that the inoculation of maize roots with L. adecarboxylata MCH-1 promoted maize seedling growth. Quantitative analysis demonstrated that this bacterial strain had the ability to synthesize the phytohormone IAA. Simultaneously, the concentration of IAA in the rhizospheric soil increased following inoculation of maize roots with L. adecarboxylata MCH-1. Moreover, the concentrations of plant specialized metabolites, including phenolics, terpenoids, and alkaloids, decreased in maize seedlings and were elevated in the rhizospheric soil after maize roots had been inoculated with the MCH-1 strain. Interestingly, the growth of the strain MCH-1 was improved by co-culture with root exudates obtained from the rhizospheric soil, specifically 3-hydroxybenzoic acid, 4-hydroxybenzoic acid, and zealexin A
    MeSH term(s) Carbofuran ; Insecticides ; Plant Growth Regulators ; Plant Roots ; Rhizosphere ; Seedlings ; Soil/chemistry ; Soil Microbiology ; Terpenes ; Zea mays
    Chemical Substances Insecticides ; Plant Growth Regulators ; Soil ; Terpenes ; Carbofuran (SKF77S6Y67)
    Language English
    Publishing date 2022-08-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2022.136027
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  7. Article: Root exudate sesquiterpenoids from the invasive weed Ambrosia trifida regulate rhizospheric Proteobacteria

    Li, Hongdi / Kang, Zongli / Hua, Juan / Feng, Yulong / Luo, Shihong

    Science of the total environment. 2022 Aug. 15, v. 834

    2022  

    Abstract: The adaption of Ambrosia trifida to the environment to which it has been introduced is crucial to its successful invasion. Microbial diversity analyses suggested that the abundance of Proteobacteria was relatively high in rhizospheric soil surrounding A. ...

    Abstract The adaption of Ambrosia trifida to the environment to which it has been introduced is crucial to its successful invasion. Microbial diversity analyses suggested that the abundance of Proteobacteria was relatively high in rhizospheric soil surrounding A. trifida roots. Three of these bacterial taxa were isolated and identified as Acinetobacter sp. LHD-1, Pseudomonas sp. LHD-12, and Enterobacter sp. LHD-19. Furthermore, three sesquiterpenoids were authenticated as the main metabolites in the root exudates of A. trifida, and include one new germacrane sesquiterpenoid (1E,4E)-germacrdiene-6β,15-diol (2) and two known sesquiterpenoids, (E)-4β,5α-epoxy-7αH-germacr-1(10)-ene-2β,6β-diol (1) and (2R)-δ-cadin-4-ene-2,10-diol (3). Their chemical structures were elucidated using NMR spectroscopy and single crystal X-ray diffraction analyses. In UPLC-MS/MS analyses, compounds 1–3 showed values of 10.29 ± 2.21, 0.02 ± 0.01, and 0.78 ± 0.52 μg/g FW, respectively, in A. trifida rhizospheric soil. Interestingly, those compounds were able to inhibit the growth of Acinetobacter sp. LHD-1 and promote the growth of Enterobacter sp. LHD-19 where concentrations were close to those secreted into rhizospheric soil. Furthermore, the rhizospheric bacteria Acinetobacter sp. LHD-1 and Enterobacter sp. LHD-19 were able to regulate the growth of A. trifida seedlings in potted planting verification experiments. Interestingly, root exudate sesquiterpenoids could also improve the concentration of IAA in Enterobacter sp. LHD-19, indicating that this bacterium may promote plant growth through regulating the IAA pathway. These results provided new evidence for the rapid adaptation of plants to new environments, allowing their invasive behavior.
    Keywords Acinetobacter ; Ambrosia trifida ; Enterobacter ; Pseudomonas ; X-ray diffraction ; environment ; invasive species ; metabolites ; nuclear magnetic resonance spectroscopy ; plant growth ; root exudates ; sesquiterpenoids ; soil
    Language English
    Dates of publication 2022-0815
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2022.155263
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  8. Article: Inoculation with carbofuran-degrading rhizobacteria promotes maize growth through production of IAA and regulation of the release of plant-specialized metabolites

    Ma, Caihong / Hua, Juan / Li, Hongdi / Zhang, Jiaming / Luo, Shihong

    Chemosphere. 2022 Nov., v. 307

    2022  

    Abstract: Toxic residues of the insecticide carbofuran in farmland is an urgent problem, and high concentrations of carbofuran have been found in the rhizoshperic soil of maize treated with seed coating agents 120–180 days after planting. Using an enrichment co- ... ...

    Abstract Toxic residues of the insecticide carbofuran in farmland is an urgent problem, and high concentrations of carbofuran have been found in the rhizoshperic soil of maize treated with seed coating agents 120–180 days after planting. Using an enrichment co-culture method, we identify a bacterial strain obtained from these carbofuran-contaminated rhizosphere soils as Leclercia adecarboxylata MCH-1. This strain exhibited a significant ability to degrade both carbofuran and 3-keto carbofuran, with total degradation of 55.6 ± 4.6% and 75.7 ± 3.4%, respectively, 24 h following start of co-culture. Further activity screening revealed that the inoculation of maize roots with L. adecarboxylata MCH-1 promoted maize seedling growth. Quantitative analysis demonstrated that this bacterial strain had the ability to synthesize the phytohormone IAA. Simultaneously, the concentration of IAA in the rhizospheric soil increased following inoculation of maize roots with L. adecarboxylata MCH-1. Moreover, the concentrations of plant specialized metabolites, including phenolics, terpenoids, and alkaloids, decreased in maize seedlings and were elevated in the rhizospheric soil after maize roots had been inoculated with the MCH-1 strain. Interestingly, the growth of the strain MCH-1 was improved by co-culture with root exudates obtained from the rhizospheric soil, specifically 3-hydroxybenzoic acid, 4-hydroxybenzoic acid, and zealexin A₁ (ZA₁). Taken together, our results suggest that the carbofuran-degrading rhizobacterium L. adecarboxylata MCH-1 is able to interact with maize plants through the regulation of maize root exudates. Moreover, inoculation with L. adecarboxylata MCH-1 promotes maize growth through the production of IAA and regulation of the release of plant specialized metabolites. Our results provide a new model organism for the remediation of farmland soils from pollution with carbofuran residues.
    Keywords 4-hydroxybenzoic acid ; Leclercia adecarboxylata ; agricultural land ; carbofuran ; coculture ; corn ; insecticides ; metabolites ; pollution ; quantitative analysis ; remediation ; rhizosphere ; rhizosphere bacteria ; seedling growth ; soil ; terpenoids ; toxicity
    Language English
    Dates of publication 2022-11
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2022.136027
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  9. Article: Degraded Metabolites of Phlorizin Promote Germination of Valsa mali var. mali in its Host Malus spp

    Yang, Wan / Li, Hongdi / Liu, Jiayi / Shao, Hua / Hua, Juan / Luo, Shihong

    Journal of agricultural and food chemistry. 2021 Dec. 23, v. 70, no. 1

    2021  

    Abstract: Plant pathogenic fungi are able to utilize the principal metabolites of their hosts, which is one reason pathogens can so seriously harm the plants, although the mechanisms behind this utilization are not always clear. Valsa mali var. mali is a ... ...

    Abstract Plant pathogenic fungi are able to utilize the principal metabolites of their hosts, which is one reason pathogens can so seriously harm the plants, although the mechanisms behind this utilization are not always clear. Valsa mali var. mali is a pathogenic fungus specific to the plant genus Malus. The fungus can seriously endanger apple crops and has caused serious economic losses. Phlorizin (1), the principal component in the stems, roots, and leaves of Malus pumila and M. sieversii, was able to promote spore germination of Valsa mali var. mali (Vmm-30) significantly over 120-168 h in a non-nutritional suspension. Compared with the control, the concentrations of nine phenolic compounds (3–11) in the stems of M. pumila increased after inoculation with Vmm-30. Moreover, compounds 3, 4, and 9–11 were able to promote the germination of Vmm-30 spores over 24–36 h, which was a significantly shorter time than that of phlorizin. High-performance liquid chromatography with diode-array detection (HPLC-DAD) and ultraperformance liquid chromatography with tandem mass spectrometry (UPLC–MS/MS) analyses further suggested that compounds 2–11 were the degradation products of phlorizin (1) and are produced through carbon oxidation cracking, decarboxylation, and oxidation reactions. This suggests that the degradation of phlorizin is able to effectively promote the growth of Vmm-30. The Vmm-30 strain is therefore able to utilize the principal metabolite phlorizin to generate a series of degradation products, which further promote its germination and the infection of its host plants in the genus Malus.
    Keywords Malus pumila ; Valsa mali ; apples ; carbon ; decarboxylation ; food chemistry ; high performance liquid chromatography ; metabolites ; oxidation ; spore germination ; tandem mass spectrometry ; ultra-performance liquid chromatography ; virulent strains
    Language English
    Dates of publication 2021-1223
    Size p. 149-156.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 241619-0
    ISSN 1520-5118 ; 0021-8561
    ISSN (online) 1520-5118
    ISSN 0021-8561
    DOI 10.1021/acs.jafc.1c06206
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  10. Article ; Online: Degraded Metabolites of Phlorizin Promote Germination of

    Yang, Wan / Li, Hongdi / Liu, Jiayi / Shao, Hua / Hua, Juan / Luo, Shihong

    Journal of agricultural and food chemistry

    2021  Volume 70, Issue 1, Page(s) 149–156

    Abstract: Plant pathogenic fungi are able to utilize the principal metabolites of their hosts, which is one reason pathogens can so seriously harm the plants, although the mechanisms behind this utilization are not always clear. ...

    Abstract Plant pathogenic fungi are able to utilize the principal metabolites of their hosts, which is one reason pathogens can so seriously harm the plants, although the mechanisms behind this utilization are not always clear.
    MeSH term(s) Ascomycota ; Chromatography, Liquid ; Mali ; Malus ; Phlorhizin ; Plant Diseases ; Tandem Mass Spectrometry
    Chemical Substances Phlorhizin (CU9S17279X)
    Language English
    Publishing date 2021-12-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 241619-0
    ISSN 1520-5118 ; 0021-8561
    ISSN (online) 1520-5118
    ISSN 0021-8561
    DOI 10.1021/acs.jafc.1c06206
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