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Position: Home > Articles > Genome-wide Responses to Drought in Forest Trees Shaanxi Forest Science and Technology 2015 (6) 68-75

林木对干旱胁迫的全基因组应答(一)

作  者:
田郎
单  位:
中国热带农业科学院橡胶研究所
关键词:
林木;干旱胁迫;全基因组应答
摘  要:
干旱对于森林健康及人工生产林的建立均是一种严重威胁。因此,人们对于林木对干旱胁迫的应答机制一直怀有极大的兴趣。本文综述一般植物,特别是林木对于水分亏缺的感受及响应模式,并着重介绍林木对干旱刺激的分子应答机制,尤其是胁迫所引发的整个基因组范围内转录本丰度及蛋白质表达谱的改变。纵观林木此方面的研究历程可以看出,人们对于干旱分子应答的认识已由单个应答基因的分离鉴定逐渐深入到了对协同参与和调控应答反应的一系列相关基因或蛋白质的分析探讨。此外,本文也关注到了如何有效地利用这些研究成果才能最终达到保护森林健康和提高人工林生产力的目的。我们的综合分析结果显示,作为一种新的研究工具和手段,林木干旱应答的全基因组分析可有效地用于其适应性变异的保持及新品种的选育和基因型的定向修饰,从而使其能更好地应对未来可能的干旱胁迫。
译  名:
Genome-wide Responses to Drought in Forest Trees
作  者:
TIAN Lang;Rubber Research Institute,Chinese Academy of Tropical Agricultural Sciences;
关键词:
Forest tree;;drought stress;;Genome-wide responses
摘  要:
Drought is a significant threat to forest health and the establishment of productive tree plantations.There is therefore great interest in understanding the mechanisms underpinning drought responses in forest trees.This review considers the means by which plants in general,and forest trees specifically,both detect and respond to water limitation.The review focuses on molecular-level responses to a drought stimulus,with an emphasis on responses that involve genome-wide reconfigurations in transcript abundance and protein complement in forest trees.A historical view of the molecular analysis of such responses shows a remarkable transition from understanding the impact of drought on individual genes to a more comprehensive picture of the suites of genes and proteins that constitute a drought response.Attention is paid to how this understanding might further the aims of preserving forest health and improve plantation productivity.The review suggests that genome-wide analysis of forest tree drought responses can be leveraged to provide new tools for conservation of adaptive variation and targets for selective breeding or directed modification of forest tree genotypes that can better contend with future drought scenarios.

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