MeSA fumigation enhances the response to Colletotrichum gloeosporioides in postharvest 'Nam Dok Mai' mangoes by inducing endogenous jasmonic acid biosynthesis and MiSAMT expression
บทความในวารสาร
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Wongs-Aree C.; Kalapanulak S.; Boonyaritthongchai P.; Buanong M.; Chiewchankaset P.; Thaiprasit J.; Saithong T.; Nguyen N.X.
ผู้เผยแพร่: Elsevier
ปีที่เผยแพร่ (ค.ศ.): 2025
วารสาร: Postharvest Biology and Technology (0925-5214)
Volume number: 230
นอก: 0925-5214
eISSN: 1873-2356
ภาษา: English-United States (EN-US)
บทคัดย่อ
Mango (Mangifera indica L.) is a globally important economic fruit crop whose production is severely threatened by Colletotrichum gloeosporioides (Cg), the causal pathogen of anthracnose disease. Exogenous application of methyl salicylate (MeSA), a natural methylated derivative of salicylic acid (SA), has been shown to alleviate anthracnose symptoms; however, its regulatory effects on jasmonic acid (JA)-mediated defense mechanisms and JA-SA interactions remain unclear. Through transcriptome analysis, MiSAMT and MiAOC were identified as crucial regulatory genes, exhibiting significantly differential expression across varying infection levels and mango resistance to Cg. MiSAMT, a key defensive gene against Cg, and MiAOC, a common stress-responsive gene, along with additional JA biosynthesis genes (MiAOS, Mi12OPR, and MiOPR11), were selected for further investigation due to their highly expressed levels in response to Cg. A MeSA fumigation experiment was conducted to investigate the effect of exogenous MeSA on mango defense responses to Cg infection. Disease progression, endogenous JA and SA levels, and the gene expression of MiAOC, MiAOS, Mi12OPR, MiOPR11, and MiSAMT were analyzed. In response to Cg infection, mango exhibited a transient increase in JA, indicative of a naturally inducible immune response. This response was sustained by MeSA fumigation, reinforcing its role in enhancing resistance. Besides, MeSA sharply upregulated MiSAMT expression, suggesting increased synthesis of MeSA volatile, which, in conjunction with JA, contribute to be an enhanced early defense response to Cg. Pearson correlation analysis revealed a cooperative and interconnected JA-SA relationship, highlighting JA's vital role in mango defense against Cg. These findings suggest that exogenous MeSA fumigation is a promising approach for managing anthracnose in postharvest mangoes. © 2025 Elsevier B.V., All rights reserved.
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