Low temperature synergistically promotes wounding-induced indole accumulation by INDUCER OF CBF EXPRESSION-mediated alterations of jasmonic acid signaling in Camellia sinensis
Low temperature synergistically promotes wounding-induced indole accumulation by INDUCER OF CBF EXPRESSION-mediated alterations of jasmonic acid signaling in Camellia sinensis
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低温通过 CBF 表达诱导剂介导的茶树茉莉酸信号改变协同促进创伤诱导的吲哚积累
DOI：
10.1093/jxb/erz570
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发表时间：
2020-01
影响因子：
6.9
通讯作者：
Yang Z.Y.
中科院分区：
文献类型：
--
作者：
Zhou Y.;Zeng L.T.;Hou X.L.;Liao Y.Y.;Yang Z.Y.
摘要植物必须科普各种环境胁迫因子，这些胁迫因子对植物的生理和次生代谢产生重要影响。个别压力，如低温，已知激活植物挥发性化合物作为防御。然而，很少有人知道的多重压力对植物挥发性物质的形成的影响。在这里，双重胁迫（伤害和低温）对茶叶（茶树）植物挥发性化合物的影响和潜在的信号机制进行了研究。吲哚是一种抗虫挥发物，与单独伤害相比，在双重胁迫下保持更高的含量和更长的时间。CsMYC2a是茉莉酸（JA）响应性转录因子，是CsTSB 2的主要调节因子，CsTSB 2是编码吲哚合成所必需的色氨酸合成酶β亚基的基因。在茶树受伤后的恢复期，低温有助于维持较高的JA水平。进一步的研究表明，CsICE 2与CsJAZ 2直接相互作用，解除CsMYC 2a的抑制作用，从而促进JA的生物合成，并使下游反应基因CsTSB 2的表达增强，最终促进吲哚的生物合成。这些发现揭示了低温在促进植物伤害反应中的作用，并进一步了解了多种胁迫协调调节植物对生物和非生物环境反应的分子机制。
Abstract Plants have to cope with various environmental stress factors which significantly impact plant physiology and secondary metabolism. Individual stresses, such as low temperature, are known to activate plant volatile compounds as a defense. However, less is known about the effect of multiple stresses on plant volatile formation. Here, the effect of dual stresses (wounding and low temperature) on volatile compounds in tea (Camellia sinensis) plants and the underlying signalling mechanisms were investigated. Indole, an insect resistance volatile, was maintained at a higher content and for a longer time under dual stresses compared with wounding alone. CsMYC2a, a jasmonate (JA)-responsive transcription factor, was the major regulator of CsTSB2, a gene encoding a tryptophan synthase β-subunit essential for indole synthesis. During the recovery phase after tea wounding, low temperature helped to maintain a higher JA level. Further study showed that CsICE2 interacted directly with CsJAZ2 to relieve inhibition of CsMYC2a, thereby promoting JA biosynthesis and downstream expression of the responsive gene CsTSB2 ultimately enhancing indole biosynthesis. These findings shed light on the role of low temperature in promoting plant damage responses and advance knowledge of the molecular mechanisms by which multiple stresses coordinately regulate plant responses to the biotic and abiotic environment.
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影响因子：
16.6
作者：
Erb, Matthias;Veyrat, Nathalie;Robert, Christelle A. M.;Xu, Hao;Frey, Monika;Ton, Jurriaan;Turlings, Ted C. J.
通讯作者：
Turlings, Ted C. J.
影响因子：
5.1
作者：
Li JF;Park E;von Arnim AG;Nebenführ A
通讯作者：
Nebenführ A
在相互作用的干旱和草食胁迫下，来自Alnus谷胱甘肽的挥发性有机化合物排放。
影响因子：
5.7
作者：
Copolovici L;Kännaste A;Remmel T;Niinemets Ü
通讯作者：
Niinemets Ü
DOI：
10.1016/j.plantsci.2016.08.016
发表时间：
2016-11
期刊：
Plant science : an international journal of experimental plant biology
影响因子：
--
作者：
Yuqian Zhang;Xiumin Fu;Feiyan Wang;Ziyin Yang
通讯作者：
Yuqian Zhang;Xiumin Fu;Feiyan Wang;Ziyin Yang
影响因子：
5.6
作者：
Du H;Liu H;Xiong L
通讯作者：
Xiong L