Insight into the mechanisms involved in the improved antagonistic efficacy of Pichia caribbica against postharvest black spot of tomato fruits by combined application with oligochitosan

Zhang, Xiaoyun; Xin, Yu; Yue, Qingrong; Godana, Esa Abiso; Gao, Linlin; Dou, Mengge; Zhou, Hongyao; Li, Jun; Zhao, Lina; Zhang, Hongyin

doi:10.1016/j.postharvbio.2024.112968

Postharvest Biology and Technology

2024

DOI: 10.1016/j.postharvbio.2024.112968

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Insight into the mechanisms involved in the improved antagonistic efficacy of Pichia caribbica against postharvest black spot of tomato fruits by combined application with oligochitosan

Xiaoyun Zhang,

Yu Xin,

Qingrong Yue

et al.

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Cited by 2 publications

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Chitosan Oligosaccharides: A Natural Rich, High-Efficiency, and Safe Frontrunner for the Futural Fruits/Vegetables Preservation

Wang,

Chen,

Wang

et al. 2024

Food Bioprocess Technol

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Chitosan Oligosaccharides: A Natural Rich, High-Efficiency, and Safe Frontrunner for the Futural Fruits/Vegetables Preservation

Wang,

Chen,

Wang

et al. 2024

Food Bioprocess Technol

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Cladophialophora guangxiense sp. nov., a New Species of Dark Septate Endophyte, Mitigates Tomato Bacterial Wilt and Growth Promotion Activities

Wei,

Long,

Chen

et al. 2024

Agronomy

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Bacterial wilt of tomatoes, caused by Ralstonia solanacearum, is a significant soilborne disease that often causes significant reductions in the yield of tomatoes. Dark septate endophytic fungi (DSE) represent potential biocontrol agents against plant pathogens that can also enhance plant growth. To collect DSE fungi with potential for biocontrol, the fungus Cladophialophora guangxiense HX2 was isolated from the rhizosphere soil of sugarcane in Hengzhou Guangxi Province, China, and a novel species of Cladophialophora was identified based on morphological properties and DNA sequence analysis. C. guangxiense HX2 demonstrated a controlling effect of 76.7% on tomato bacterial wilt and promoted a 0.5-fold increase in tomato seedling height. It colonized tomato seedling roots, enhancing the activity of antioxidant and defensive enzyme systems. Transcriptomic and qPCR approaches were used to study the induction response of the strain HX2 infection by comparing the gene expression profiles. Gene ontology (GO) and Kyoto Encyclopedia of Gene and Genome (KEGG) pathway enrichment revealed that tomatoes can produce salicylic acid metabolism, ethylene-activated signaling, photosynthesis, and phenylpropanoid biosynthesis to the strain HX2 infection. The expression of IAA4 (3.5-fold change), ERF1 (3.5-fold change), and Hqt (1.5-fold change) was substantially enhanced and Hsc 70 (0.5-fold change) was significantly reduced in the treatment group. This study provides a theoretical foundation for further investigation into the potential of C. guangxiense HX2 as a biological agent for the prevention and control of tomato bacterial wilt.

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Insight into the mechanisms involved in the improved antagonistic efficacy of Pichia caribbica against postharvest black spot of tomato fruits by combined application with oligochitosan

Cited by 2 publications

References 42 publications

Chitosan Oligosaccharides: A Natural Rich, High-Efficiency, and Safe Frontrunner for the Futural Fruits/Vegetables Preservation

Chitosan Oligosaccharides: A Natural Rich, High-Efficiency, and Safe Frontrunner for the Futural Fruits/Vegetables Preservation

Cladophialophora guangxiense sp. nov., a New Species of Dark Septate Endophyte, Mitigates Tomato Bacterial Wilt and Growth Promotion Activities

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