植物凝集素类受体蛋白激酶研究进展

自然界中植物的生长发育受到各种环境变化的影响。为了响应外界各种环境条件,植物演化出一系列识别和传递环境信号的蛋白分子,其中比较典型的是植物细胞质膜上的类受体蛋白激酶(RLKs)。凝集素类受体蛋白激酶(LecRLKs)是类受体蛋白激酶家族中的一个亚族,它主要包含3个结构域:细胞外凝集素结构域、跨膜结构域和细胞内激酶结构域。根据细胞外凝集素结构域的不同,LecRLKs可分为3种不同类型:L、G和C型。近年来,研究表明LecRLKs在植物生物/非生物胁迫和发育调控中发挥非常重要的作用。该文综述了植物凝集素类受体蛋白激酶的研究历史、结构特点、分类以及生物学功能,并重点阐述凝集素类受体蛋白激酶在植物生物/非生物胁迫响应和调控发育方面的功能。对不同类型和不同功能的植物凝集素类受体蛋白激酶进行阐述将有利于对该类蛋白开展功能研究,并为作物改良提供有益借鉴。

Research Advances on Lectin Receptor-like Kinases in Plants

Plant growth and development are affected by various environmental factors. In response to various environmental changes, plants have evolved a series of signal recognition and transduction proteins, such as the plasma membrane-localized receptor-like kinases (RLKs), to cope with the environmental conditions. The lectin receptor-like kinases (LecRLKs) are a subfamily of RLKs that contain three structural domains: the extracellular lectin domain, transmembrane domain, and the intracellular kinase domain. Based on the structural difference of the extracellular lectin domain, LecRLKs are classified into three subclasses: L-, G-, and C-type. Recent studies have shown that LecRLKs play a vital role in plant development and biotic/abiotic stress responses. In this review, we discribe the research history, structural features and classification, and biological functions of LecRLKs, and emphasize on the functions of LecRLKs in plants in response to biotic/abiotic stresses and in regulating development. This review provides a view for future functional study on LecRLKs and crop improvement by elaborating different types and functions of LecRLKs.