Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Betty-Heimann-Str. 5, D-06120, Halle (Saale), Germany.
Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Betty-Heimann-Str. 5, D-06120, Halle (Saale), Germany.
Curr Opin Plant Biol. 2022 Aug;68:102231. doi: 10.1016/j.pbi.2022.102231. Epub 2022 May 27.
Plants show remarkable phenotypic plasticity and are able to adjust their morphology and development to diverse environmental stimuli. Morphological acclimation responses to elevated ambient temperatures are collectively termed thermomorphogenesis. In Arabidopsis thaliana, morphological changes are coordinated to a large extent by the transcription factor PHYTOCHROME-INTERACTING FACTOR 4 (PIF4), which in turn is regulated by several thermosensing mechanisms and modulators. Here, we review recent advances in the identification of factors that regulate thermomorphogenesis of Arabidopsis seedlings by affecting PIF4 expression and PIF4 activity. We summarize newly identified thermosensing mechanisms and highlight work on the emerging topic of organ- and tissue-specificity in the regulation of thermomorphogenesis.
植物表现出显著的表型可塑性，能够根据不同的环境刺激来调整其形态和发育。对升高的环境温度的形态适应反应统称为热形态发生。在拟南芥中，形态变化在很大程度上由转录因子 PHYTOCHROME-INTERACTING FACTOR 4（PIF4）协调，而 PIF4 又受到几种热感测机制和调节剂的调节。在这里，我们综述了最近在鉴定通过影响 PIF4 表达和 PIF4 活性来调节拟南芥幼苗热形态发生的因素方面的进展。我们总结了新发现的热感测机制，并强调了在调节热形态发生的器官和组织特异性这一新兴主题方面的工作。
