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首页> 外文期刊>Journal of Experimental Botany >Environmental and hormonal control of cambial stem cell dynamics
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Environmental and hormonal control of cambial stem cell dynamics

机译：爪干细胞动力学的环境和激素控制

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摘要

Perennial trees have the amazing ability to adjust their growth rate to both adverse and favorable seasonally reoccurring environmental conditions over hundreds of years. In trunks and stems, the basis for the tuning of seasonal growth rate is the regulation of cambial stem cell activity. Cambial stem cell quiescence and dormancy protect the tree from potential physiological and genomic damage caused by adverse growing conditions and may permit a long lifespan. Cambial dormancy and longevity are both aspects of a tree's life for which the study of cambial stem cell behavior in the annual model plant Arabidopsis is inadequate. Recent functional analyses of hormone perception and catabolism mutants in Populus indicate that shoot-derived long-range signals, as well as local cues, steer cambial activity. Auxin is central to the regulation of cambial activity and probably also maintenance. Emerging genome editing and phenotyping technologies will enable the identification of down-stream targets of hormonal action and facilitate the genetic dissection of complex traits of cambial biology.
机译：多年生树木具有令人惊叹的能力，可以调整其增长率，对不利和有利的季节性重复的环境条件超过数百年。在树干和茎中，调整季节性生长速率的基础是爪干细胞活性的调节。爪干细胞静态和休眠保护树免受不利生长条件造成的潜在生理和基因组损伤，并且可以允许长时间寿命。 Cambial Dormancy和Lorgevity是树生命的各个方面，在此期间，年度模型植物拟南芥在爪子干细胞行为的研究不足。杨树中激素感知和分解代谢突变体的最新功能分析表明射击远程信号，以及本地提示，转向吊臂活动。养羊酸是山腰活动调节的核心，也可能也是维护。新兴的基因组编辑和表型技术将能够识别荷尔蒙动作的羽流靶标，并促进脉动生物学复杂性状的遗传解剖。

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