Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland.
Plant Sci. 2012 Apr;185-186:78-85. doi: 10.1016/j.plantsci.2011.11.015. Epub 2011 Dec 2.
Abiotic and biotic stresses frequently impose constraints on plant distribution and affect agricultural productivity. Various aspects of the multiplicity and the complexity of stress responsive gene networks have been previously studied. Many of individual transcription factors in plants and their family classes that regulate the expression of several genes in responses to environmental stresses have been identified. One such class of transcription regulators is the C(2)H(2) class of zinc finger proteins. Numerous members of the C(2)H(2)-type zinc finger family have been shown to play diverse roles in the plant stress response and the hormone signal transduction. Transcription profiling analyses have demonstrated that the transcript level of many C(2)H(2)-type zinc finger proteins is elevated under different abiotic stress conditions such as low temperature, salt, drought, osmotic stress and oxidative stress. Some C(2)H(2)-type proteins are additionally involved in the biotic stress signaling pathway. Moreover, it has been reported that overexpression of some C(2)H(2)-type zinc finger protein genes resulted in both the activation of some stress-related genes and enhanced tolerance to various stresses. Current genetic studies have focused on possible interactions between different zinc finger transcription factors during stresses to regulate transcription. This review highlights the role of the C(2)H(2) class of the zinc finger proteins in regulating abiotic and biotic stress tolerance in the plants.
非生物和生物胁迫经常对植物的分布施加限制，并影响农业生产力。先前已经研究了胁迫响应基因网络的多样性和复杂性的各个方面。已经鉴定出许多植物中的单个转录因子及其家族类，它们在响应环境胁迫时调节几个基因的表达。一类这样的转录调控因子是 C(2)H(2)类锌指蛋白。已经表明，C(2)H(2)型锌指家族的许多成员在植物胁迫反应和激素信号转导中发挥着不同的作用。转录谱分析表明，在不同的非生物胁迫条件下，如低温、盐、干旱、渗透胁迫和氧化胁迫下，许多 C(2)H(2)型锌指蛋白的转录水平升高。一些 C(2)H(2)型蛋白还参与生物胁迫信号通路。此外，据报道，一些 C(2)H(2)型锌指蛋白基因的过表达导致一些与胁迫相关的基因的激活和对各种胁迫的耐受性增强。目前的遗传研究集中在胁迫期间不同锌指转录因子之间的可能相互作用，以调节转录。这篇综述强调了 C(2)H(2)类锌指蛋白在调节植物的非生物和生物胁迫耐受性中的作用。
