首页|Advances in the study of auxin early response genes:Aux/IAA,GH3,and SAUR
Advances in the study of auxin early response genes:Aux/IAA,GH3,and SAUR
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Auxin plays a crucial role in all aspects of plant growth and development.Auxin can induce the rapid and efficient expression of some genes,which are named auxin early response genes(AERGs),mainly includ-ing the three families:auxin/indole-3-acetic acid(Aux/IAA),Gretchen Hagen 3(GH3),and small auxin-up RNA(SAUR).Aux/IAA encodes the Aux/IAA protein,which is a negative regulator of auxin response.Aux/IAA and auxin response factor(ARF)form a heterodimer and participate in a variety of physiological processes through classical or non-classical auxin signaling pathways.The GH3 encodes auxin amide syn-thetase,which catalyzes the binding of auxin to acyl-containing small molecule substrates(such as amino acids and jasmonic acid),and regulates plant growth and stresses by regulating auxin homeostasis.SAURs is a class of small auxin up-regulated RNAs.SAUR response to auxin is complex,and the process may occur at the transcriptional,post-transcriptional and protein levels.With the development of multi-omics,significant progress has been made in the study of Aux/IAA,GH3,and SAUR genes,but there are still many unknowns.This review offers insight into the characteristics of Aux/IAA,GH3,and SAUR gene families,and their roles in roots,hypocotyls,leaves,leaf inclinations,flowers,seed development,stress response,and phytohormone crosstalk,and provides clues for future research on phytohormone signaling and the molecular design breeding of crops.
AuxinAux/IAAGH3SAURStress
Dongfang Bao、Senqiu Chang、Xiaodong Li、Yanhua Qi
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Key Laboratory of Herbage & Endemic Crop Biology of Ministry of Education,Inner Mongolia Key Laboratory of Herbage & Endemic Crop Biotechnology,School of Life Sciences,Inner Mongolia University,Hohhot 010000,Inner Mongolia,China
国家自然科学基金国家自然科学基金内蒙古自治区自然科学基金Science-Technology Plan Project of Inner MongoliaApplied Technology Research and Development Foundation of Inner Mongolia
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