植物缺铁应答bHLH转录因子研究进展

Progress in bHLH transcription factors regulating the response to iron deficiency in plants

摘要:

铁是植物生命活动必需的微量元素之一，土壤中有效铁含量较低，易导致植物缺铁。bHLH转录因子家族多个成员参与植物缺铁响应，发挥重要的调控作用。为深入了解植物对缺铁的反应机制，文中对植物缺铁胁迫应答的bHLH转录因子的结构、分类和功能及其调控机制、介导的缺铁胁迫信号通路进行综述，为应用bHLH转录因子培育缺铁耐受作物或富铁作物提供理论依据和设计策略。

Abstract:

Iron is one of the essential mineral micronutrients for plants. Low concentrations of effective iron in soil can easily increase risk of plant iron deficiency. Several members of bHLH transcription factors family participate in the response to iron deficiency and play an important role in iron regulation of plants. In order to better understand the mechanism of iron deficiency response, an overview of the structure, classification, function and regulatory mechanism of bHLH transcription factors was given in this review as well as signaling pathway triggered by iron deficiency. It will provide theoretical basis and design strategies for cultivating iron deficiency tolerant or iron-rich crops using bHLH transcription factors.