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Gene Duplication and the Evolution of Plant mads-box transcription factors

Journal of Genetics and Genomics 2012年第4期39卷 157-165页

作者： Chiara A.Airoldi Brendan Davies Centre for Plant Sciences University of Leeds

Since the first mads-box transcription factor genes were implicated in the establishment of floral organ identity in a couple of model plants, the size and scope of this gene family has begun to be appreciated in a much wider range of species. Over the course of millions of years the number of mads-box genes in plants has increased to the point that the Arabidopsis genome contains more than 100. The understanding gained from studying the evolution, regulation and function of multiple mads-box genes in an increasing set of species, makes this large plant transcription factor gene family an ideal subject to study the processes that lead to an increase in gene number and the selective birth, death and repurposing of its component members. Here we will use examples taken from the mads-box gene family to review what is known about the factors that influence the loss and retention of genes duplicated in different ways and examine the varied fates of the retained genes and their associated biological outcomes.

关键词： Flower development mads-box transcription factor Gene duplication Evolution

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The BTB/TAZ domain-containing protein CmBT1-mediated CmANR1 ubiquitination negatively regulates root development in chrysanthemum

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Journal of Integrative Plant Biology 2024年第2期66卷 285-299页

作者： Lian-Da Du Zhang-Ji Guan Yan-Hong Liu Hui-Dong Zhu Quan Sun Da-Gang Hu Cui-Hui Sun Shandong Collaborative Innovation Center of Fruit&Vegetable Quality and Efficient Production College of Horticulture Science and EngineeringShandong Agricultural UniversityTaian 271018China

Roots are fundamental for plants to adapt to variable environmental *** development of a robust root system is orchestrated by numerous genetic determinants and,among them,the mads-box gene ANR1 has garnered substantial *** research has demonstrated that,in chrysanthemum,CmANR1positively regulates root system ***,the upstream regulators involved in the CmANR1-mediated regulation of root development remain *** this study,we successfully identified bric-a-brac,tramtrack and broad(BTB)and transcription adapter putative zinc finger(TAZ)domain protein CmBT1 as the interacting partner of CmANR1 through a yeasttwo-hybrid(Y2H)screening ***,we validated this physical interaction through bimolecular fluorescence complementation and pull-down *** assays revealed that CmBT1 exerted a negative influence on root development in *** both in vitro and in vivo assays,it was evident that CmBT1mediated the ubiquitination of CmANR1 through the ubiquitin/26S proteasome *** ubiquitination subsequently led to the degradation of the CmANR1 protein and a reduction in the transcription of CmANR1-targeted gene CmPIN2,which was crucial for root development in *** analysis suggested that CmBT1 modulated root development,at least in part,by regulating the level of CmANR1 ***,these findings shed new light on the regulatory role of CmBT1 in degrading CmANR1 through ubiquitination,thereby repressing the expression of its targeted gene and inhibiting root development in chrysanthemum.

关键词： chrysanthemum mads-box transcription factor root development

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Tamads2-3D,a mads transcription factor gene,regulates phosphate starvation responses in plants

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The Crop Journal 2022年第1期10卷 243-253页

作者： Yingchun Han Na Liu Chuang Li Shuaiwu Wang Lihua Jia Rui Zhang Hui Li Jinfang Tan Hongwei Xue Wenming Zheng Collaborative Innovation Center of Henan Grain Crops/State Key Laboratory of Wheat and Maize Crop Science College of Life SciencesHenan Agricultural UniversityZhengzhou 450002HenanChina College of Resource and Environment Henan Agricultural UniversityZhengzhou 450002HenanChina School of Agriculture Sun Yat-sen UniversityGuangzhou 510275GuangdongChina School of Agriculture and Biology Shanghai Jiao Tong UniversityShanghai 200240China

Soil inorganic phosphate(Pi)levels are frequently suboptimal for the growth and development of crop *** mads-box genes participate in diverse plant developmental processes,their involvement in phosphate starvation responses(PSRs)remains *** identified a type I mads-box transcription factor gene,Ta mads2-3 D,which was rapidly induced under low-Pi stress in roots of wheat(Triticum aestivum).A Ta mads2-3 D-GFP fusion protein was found located in the *** Arabidopsis plants overexpressing Ta mads2-3 D(Ta mads2-3 DOE)showed shortened primary roots,increased lateral root density,and retarded seedling growth under high-Pi(HP)conditions,accompanied by increased Pi contents in their shoots and *** Arabidopsis Ta mads2-3 DOE plants showed similar PSR phenotypes under low Pi(LP)*** results indicate constitutive activation of PSRs by overexpression of Ta mads2-3 D in *** oxygen species(ROS),H_(2)O_(2)and O_(2)^(-),levels were increased in root tips of Arabidopsis Ta mads2-3 DOE plants under HP *** analysis of Arabidopsis Ta mads2-3 DOE plants under different Pi regimes revealed expression changes for a variety of PSR genes including At *** of Ta mads2-3 D in wheat also led to constitutive activation of *** propose that Ta mads2-3 D regulates plant PSRs probably by modulating ROS homeostasis,root development,PSR gene expression,and Pi *** study increases our understanding of plant PSR regulation and provides a valuable gene for improving phosphorus-use efficiency in wheat and other crops.

关键词： mads-box transcription factor Phosphate starvation response Wheat Arabidopsis

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