共查询到20条相似文献,搜索用时 15 毫秒
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Yujin Yuan Xin Xu Yingqing Luo Zehao Gong Xiaowei Hu Mengbo Wu Yudong Liu Fang Yan Xiaolan Zhang Wenfa Zhang Yuwei Tang Bihong Feng Zhengguo Li Cai‐Zhong Jiang Wei Deng 《Plant biotechnology journal》2021,19(1):138-152
Unicellular and multicellular tomato trichomes function as mechanical and chemical barriers against herbivores. Auxin treatment increased the formation of II, V and VI type trichomes in tomato leaves. The auxin response factor gene SlARF4, which was highly expressed in II, V and VI type trichomes, positively regulated the auxin‐induced formation of II, V and VI type trichomes in the tomato leaves. SlARF4 overexpression plants with high densities of these trichomes exhibited tolerance to spider mites. Two R2R3 MYB genes, SlTHM1 and SlMYB52, were directly targeted and inhibited by SlARF4. SlTHM1 was specifically expressed in II and VI type trichomes and negatively regulated the auxin‐induced formation of II and VI type trichomes in the tomato leaves. SlTHM1 down‐regulation plants with high densities of II and VI type trichomes also showed tolerance to spider mites. SlMYB52 was specifically expressed in V type trichomes and negatively regulated the auxin‐induced formation of V type trichome in the tomato leaves. The regulation of SlARF4 on the formation of II, V and VI type trichomes depended on SlTHM1 and SlMYB52, which directly targeted cyclin gene SlCycB2 and increased its expression. In conclusion, our data indicates that the R2R3 MYB‐dependent auxin signalling pathway regulates the formation of II, V and VI type trichomes in tomato leaves. Our study provides an effective method for improving the tolerance of tomato to spider mites. 相似文献
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Arabidopsis TRANSPARENT TESTA GLABRA2 is directly regulated by R2R3 MYB transcription factors and is involved in regulation of GLABRA2 transcription in epidermal differentiation 总被引:6,自引:0,他引:6
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Ishida T Hattori S Sano R Inoue K Shirano Y Hayashi H Shibata D Sato S Kato T Tabata S Okada K Wada T 《The Plant cell》2007,19(8):2531-2543
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Expression of the MYB transcription factor gene BplMYB46 affects abiotic stress tolerance and secondary cell wall deposition in Betula platyphylla 总被引:1,自引:0,他引:1
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Huiyan Guo Yucheng Wang Liuqiang Wang Ping Hu Yanmin Wang Yuanyuan Jia Chunrui Zhang Yu Zhang Yiming Zhang Chao Wang Chuanping Yang 《Plant biotechnology journal》2017,15(1):107-121
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