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首页> 外文期刊>Journal of Experimental Botany >Interactions between cytokinin signalling and abiotic stress responses
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Interactions between cytokinin signalling and abiotic stress responses

机译：细胞分裂素信号传导与非生物应激反应之间的相互作用

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摘要

Plants have evolved elaborate mechanisms for sensing and responding to sub-optimal environmental conditions. Abiotic stresses caused by these conditions trigger a wide range of local and long-distance signals which must be coordinated and integrated into whole-plant processes, such as development, in order for the plant to respond properly and survive. Several hormones function as key regulators of stress tolerance, connecting local stimuli to systemic responses. Cytokinin is a hormone well known for its role in numerous aspects of growth and development, although abundant evidence also indicates that cytokinin functions in stress responses as well. At present, a full understanding of the effects of cytokinin on plant resistance to stress is lacking, possibly as a result of the complex interactions between cytokinin and stress signalling. Current knowledge of the physiological relationship between cytokinin and abiotic stress, based on measurements of cytokinin levels under stress conditions and the effects of cytokinin treatment on stress tolerance, has been examined here. A pattern of transcriptional regulation of stress-related genes by cytokinin in different plant species has also been identified. In addition, research regarding the role of specific cytokinin signalling components in a variety of stress responses is presented. We discuss what this body of research collectively implies with regard to cross-talk between cytokinin and abiotic stress tolerance.
机译：植物已经进化出用于感测和响应次优环境条件的复杂机制。由这些条件引起的非生物胁迫触发了广泛的本地和长途信号，必须对其进行协调并将其整合到整个植物过程（例如发育）中，以使植物正确响应并生存。几种激素可作为压力耐受性的关键调节剂，将局部刺激与全身反应联系起来。细胞分裂素是一种激素，因其在生长和发育的许多方面发挥作用而闻名，尽管大量证据也表明细胞分裂素在应激反应中也起作用。目前，由于细胞分裂素与胁迫信号之间复杂的相互作用，因此缺乏对细胞分裂素对植物抗逆性的影响的全面了解。在这里已经检查了细胞分裂素和非生物胁迫之间的生理关系的当前知识，这是基于在胁迫条件下细胞分裂素水平的测量以及细胞分裂素治疗对胁迫耐受性的影响。还已经确定了细胞分裂素在不同植物物种中对应激相关基因的转录调控的模式。此外，提出了有关特定细胞分裂素信号传导成分在各种应激反应中的作用的研究。我们讨论了有关细胞分裂素与非生物胁迫耐受性之间的相互影响这一研究集体所隐含的含义。

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