TwoMADS-boxgenes regulate vascularcambium activity and secondary growth by modulating auxin homeostasis in Populus
作者机构：National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China University of the Chinese Academy of SciencesBeijing 100049China Hunan Agricultural UniversityHunan 4101287China Lanzhou UniversityLanzhou730000China
出 版 物：《Plant Communications》 (植物通讯（英文）)
年 卷 期：2021年第2卷第5期
页 面：120-131页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境]
基 金：supported by the Ministry of Science and Technology of the People’s Republic of China(2016YFD0600104) the National Natural Science Foundation of China(31630014) the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB27020104)
主 题：vascular cambium secondary growth auxin xylem tree
摘 要：In trees,stem secondary growth depends on vascular cambium proliferation activity and subsequent cell differentiation,in which an auxin concentration gradient across the cambium area plays a crucial role in regulating the ***,the underlying molecular mechanismfor the establishment of auxin concentration is not fully *** this study,we identified two function-unknown MADS-box genes,VCM1 and VCM2,which are expressed specifically in the vascular cambium and modulate the subcellular homeostasis of *** knockdown of both VCM1 and VCM2 enhanced vascular cambium proliferation activity and subsequent xylem *** of VCM1 suppressed vascular cambium activity and wood formation by regulating PIN5 expression,which tuned the soluble auxin concentration in the vascular cambium *** study reveals the role of VCM1 and VCM2 in regulating the proliferation activity of the vascular cambium and secondary growth by modulating the subcellular auxin homeostasis in Populus.
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