GhMYC1374 regulates the cotton defense response to cotton aphids by mediating the production of flavonoids and free gossypol
文献类型: 外文期刊
作者: Zhang, Yi 1 ; Wang, Yuxue 1 ; Liu, Ting 1 ; Luo, Xincheng 2 ; Wang, Yi 1 ; Chu, Longyan 1 ; Li, Jianpin 1 ; An, Hongliu 1 ; Wan, Peng 3 ; Xu, Dong 3 ; Yang, Yazhen 2 ; Zhang, Jianmin 1 ;
作者机构: 1.Yangtze Univ, Coll Agr, Jingzhou 434025, Peoples R China
2.Yangtze Univ, Coll Life Sci, Jingzhou 434025, Peoples R China
3.Hubei Acad Agr Sci, Hubei Key Lab Biol Crop Dis & Insect Pests, Wuhan 430072, Peoples R China
关键词: Cotton; Cotton aphids; MYC TFs; Flavonoids; Free gossypol
期刊名称:PLANT PHYSIOLOGY AND BIOCHEMISTRY ( 影响因子:6.5; 五年影响因子:6.4 )
ISSN: 0981-9428
年卷期: 2023 年 205 卷
页码:
收录情况: SCI
摘要: Myelocytomatosis (MYC) transcription factors (TFs) in plants are well-known regulators of plant defense against herbivores. However, the role and mechanism of MYC TFs in cotton (Gossypium hirsutum L.) defense against cotton aphids (Aphis gossypii Glover) remain still elusive. Herein, on the basis of aphid-induced cotton transcriptome analysis, GhMYC1374, a cotton MYC2-like TF that was highly induced by cotton aphid attack, has been identified that confers cotton aphid resistance in cotton. GhMYC1374 was an intranuclear transcription factor with three domains: bHLH-MYC_N, RBR and bHLH_AtAIB_like. GhMYC1374 was induced under cotton aphid feeding, exogenous methyl jasmonate (MeJA) and salicylic acid (SA) treatments. GhMYC1374 transient overexpression in cotton plants enhanced cotton aphid-resistance, while GhMYC1374 silence through VIGS (virus induced gene silencing) decreased cotton aphid-resistance. GhMYC1374 transient overexpression of in cotton plants activated the phenylpropane pathway and promoted the synthesis of flavonoids, and resistance to thus enhanced the cotton resistance against aphids. In contrast, GhMYC1374 silence inhibited the biosynthesis of flavonoids. In addition, GhMYC1374 also positively activated the expression of the biosynthetic genes of free gossypol, leading to the high content of free gossypol. Taken together, our results suggest that GhMYC1374 is involved in the cotton defense response against cotton aphids by regulating the biosynthesis of flavonoids and free gossypol.
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