期刊论文详细信息
BMC Genomics
Jasmonate signaling drives defense responses against Alternaria alternata in chrysanthemum
Research
Shuhuan Zhang1  Jiafu Jiang1  Fadi Chen1  Sumei Chen1  Weihao Miao1  Ye Liu1  Zhiyong Guan1 
[1] State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Key Laboratory of State Forestry and Grassland Administration On Biology of Ornamental Plants in East China, College of Horticulture, Nanjing Agricultural University, 210095, Nanjing, China;Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, 210014, Nanjing, Jiangsu, China;
关键词: JA signaling;    Alternaria alternata;    Chrysanthemum morifolium;    Defense responses;   
DOI  :  10.1186/s12864-023-09671-0
 received in 2023-06-10, accepted in 2023-09-12,  发布年份 2023
来源: Springer
PDF
【 摘 要 】

BackgroundBlack spot disease caused by the necrotrophic fungus Alternaria spp. is one of the most devastating diseases affecting Chrysanthemum morifolium. There is currently no effective way to prevent chrysanthemum black spot.ResultsWe revealed that pre-treatment of chrysanthemum leaves with the methy jasmonate (MeJA) significantly reduces their susceptibility to Alternaria alternata. To understand how MeJA treatment induces resistance, we monitored the dynamics of metabolites and the transcriptome in leaves after MeJA treatment following A. alternata infection. JA signaling affected the resistance of plants to pathogens through cell wall modification, Ca2+ regulation, reactive oxygen species (ROS) regulation, mitogen‐activated protein kinase cascade and hormonal signaling processes, and the accumulation of anti-fungal and anti-oxidant metabolites. Furthermore, the expression of genes associated with these functions was verified by reverse transcription quantitative PCR and transgenic assays.ConclusionOur findings indicate that MeJA pre-treatment could be a potential orchestrator of a broad-spectrum defense response that may help establish an ecologically friendly pest control strategy and offer a promising way of priming plants to induce defense responses against A. alternata.

【 授权许可】

CC BY   
© BioMed Central Ltd., part of Springer Nature 2023

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