Molecular basis of natural variation and environmental control of trichome patterning.
Molecular basis of natural variation and environmental control of trichome patterning.
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DOI：
10.3389/fpls.2014.00320
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发表时间：
2014
影响因子：
5.6
通讯作者：
Hauser MT
中科院分区：
文献类型：
--
作者：
Hauser MT
毛状体是几乎所有陆地植物地上器官上的分化的表皮细胞。它们在生物攻击（如植食性、产卵和真菌感染）和非生物胁迫（如干旱、高温、冰冻、过度光照和紫外线辐射）中起着重要的保护作用。毛状体的模式和密度在自然种群中是高度可变的，这表明对适应性有积极影响的性状（如抗性）和毛状体生产成本之间的权衡。毛状体的空间分布是通过内源发育程序和外部信号相结合来调节的。本文综述了毛状体自然变异的分子基础以及植物激素和环境刺激对毛状体形态形成的影响。
Trichomes are differentiated epidermal cells on above ground organs of nearly all land plants. They play important protective roles as structural defenses upon biotic attacks such as herbivory, oviposition and fungal infections, and against abiotic stressors such as drought, heat, freezing, excess of light, and UV radiation. The pattern and density of trichomes is highly variable within natural population suggesting tradeoffs between traits positively affecting fitness such as resistance and the costs of trichome production. The spatial distribution of trichomes is regulated through a combination of endogenous developmental programs and external signals. This review summarizes the current understanding on the molecular basis of the natural variation and the role of phytohormones and environmental stimuli on trichome patterning.
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