Using Transcriptome Analysis to Identify Genes Involved in Switchgrass Flower Reversion
文献类型： 外文期刊
作者： Wang Yongfeng 1 ; Zheng Aiquan 2 ; Sun Fengli 1 ; Li Mao 1 ; Xu Kaijie 3 ; Zhang Chao 1 ; Liu Shudong 1 ; Xi Yajun 1 ;
作者机构： 1.College of Agronomy, Northwest A&F University, Yangling, China; State Key Laboratory of Crop Stress Biology for Arid Areas, Yangling, China
2.College of Agronomy, Northwest A&F University, Yangling, China; Yangling Vocational & Technical College, Yangling, China
3.Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
关键词： switchgrass; floral reversion; cytokinin; flower maintenance; transcriptome
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）
ISSN： 1664-462X
年卷期： 2018 年 9 卷
页码：
收录情况： SCI
摘要： Floral reversion is a process in which differentiated floral organs revert back to vegetative organs. Although this phenomenon has been described for decades, the underlying molecular mechanisms remain unclear. In this study, we found that immature switchgrass (Panicum virgatum) inflorescences can revert to neonatal shoots when incubated on a basal medium with benzylaminopurine. We used anatomical and histological methods to verify that these shoots were formed from floret primordia through flower reversion. To further explore the gene regulation of floral reversion in switchgrass, the transcriptome of reversed, unreversed, and uncultured immature inflorescences were analyzed and 517 genes were identified as participating in flower reversion. Annotation using non-redundant databases revealed that these genes are involved in plant hormone biosynthesis and signal transduction, starch and sucrose metabolism, DNA replication and modification, and other processes crucial for switchgrass flower reversion. When four of the genes were overexpressed in Arabidopsis thaliana, vegetative growth was facilitated and reproductive growth was inhibited in transgenic plants. This study provides a basic understanding of genes regulating the floral transition in switchgrass and will promote the research of floral reversion and flower maintenance.
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