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Maize Genic male-sterility Genes and Their Applications in Hybrid Breeding: Progress and Perspectives

Molecular Plant 2019年第3期12卷 321-342页

作者： Xiangyuan Wan Suowei Wu Ziwen Li Zhenying Dong Xueli An Biao Ma Youhui Tian Jinping Li Biology and Agriculture Research Center University of Science and Technology BeijingBeijing 100024China Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding Beijing International Science and Technology Cooperation Base of Bio-Tech BreedingBeijing Solidwill Sci-Tech Co.Ltd.Beijing 100192China

As one of the most important crops, maize not only has been a source of the food, feed, and industrial feedstock for biofuel and bioproducts, but also became a model plant system for addressing fundamental questions in genetics. male sterility is a very useful trait for hybrid vigor utilization and hybrid seed production. The identification and characterization of genic male-sterility (GMS) genes in maize and other plants have deepened our understanding of the molecular mechanisms controlling anther and pollen development, and enabled the development and efficient use of many biotechnology-based male-sterility (BMS) systems for crop hybrid breeding. In this review, we summarize main advances on the identification and characterization of GMS genes in maize, and con struct a putative regulatory network controlling maize anther and pollen development by comparative genomic analysis of GMS genes in maize, Arabidopsis, and rice. Furthermore, we discuss and appraise the features of more than a dozen BMS systems for propagating male-sterile lines and producing hybrid seeds in maize and other plants. Finally, we provide our perspectives on the studies of GMS genes and the development of novel BMS systems in maize and other plants. The continuous exploration of GMS genes and BMS systems will enhance our understanding of molecular regulatory networks controlling male fertility and greatly facilitate hybrid vigor utilization in breeding and field production of maize and other crops.

关键词： genic male sterility anther and pollen development biotechnology-based male-sterility system hybrid seed production maize

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Creating a large scale of male sterile mutants via the CRISPRI/CAS9 technology and dissecting molecular mechanism of genic male sterility in maize

Creating a large scale of male sterile mutants via the CRISP...

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第十九届中国作物学会学术年会

作者：万向元 Zhongzhi International Institute of Agricultural Biosciences Biology and Agriculture Research Center University of Science and Technology Beijing Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding Beijing Solidwill Sci-Tech Co.Ltd.

【Background】As one of the most important crops, maize not only has been a source of the food, feed, and industrial feedstock for biofuel and bioproducts but also became as a model plant system for addressing fundamental questions in genetics. male sterility is a very useful trait for hybrid vigor utilization and hybrid seed production. The identification and characterization of genic male-sterility(GMS) genes in maize and other plants have deepened our understanding of the molecular mechanisms controlling anther and pollen development, and enabled the development and efficient use of many biotechnology-based male-sterility(BMS) systems for crop hybrid breeding. 【Results】Here, I will report the main progress on three aspects in our lab:(1) Creating a large scale of maize male-sterility mutants via the CRISPRI/CAS9 technology based on three sets of transcriptomics(RNA-Seq) data from maize anthers during eight anther developmental stages, by which we can predict many potential GMS genes;(2) Identifying and characterizing several GMS genes such as ZmMs7, ZmMs20, ZmMs25, ZmMs30, and ZmMs33, as well as many GMS-related microRNAs(miRNAs), competing endogenous RNAs(ceRNAs) and ceRNA-miRNA-target gene pairs in maize, and then constructing a putative regulatory network for maize anther and pollen development by comparative genomics analysis of the GMS genes in maize, Arabidopsis and rice;and(3) Introducing the features of two BMS systems(e.g. A Multiple Control Sterile system and A Universal Dominant male-sterility system developed in our lab) for propagating male sterile lines and producing hybrid seeds in maize and other plants. Finally, I would like to provide my perspectives on the studies of GMS genes and the development of novel BMS systems in maize and other plants. 【Conclusion】 The continuous exploration of GMS genes and BMS systems will enhance our understanding of the molecular regulatory networks controlling male fertility and greatly facilitate hybrid vigor utiliz

关键词： maize Genic male sterility(GMS) male sterile mutants CRISPRI/CAS9 molecular mechanism biotechnology-based male-sterility system hybrid vigor utilization

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