干旱区生态环境知识资源中心(Arid): Genome-wide analysis and identification of the low potassium stress responsive gene SiMYB3 in foxtail millet (Setariaitalica L.)

Arid

DOI	10.1186/s12864-019-5519-2
	Genome-wide analysis and identification of the low potassium stress responsive gene SiMYB3 in foxtail millet (Setariaitalica L.)
	Cao, Xinyou 1; Hu, Liqin 2; Chen, Xueyan 3; Zhang, Rongzhi 1; Cheng, Dungong 1; Li, Haosheng 1; Xu, Zhaoshi 2; Li, Liancheng 2; Zhou, Yongbin 2; Liu, Aifeng 1; Song, Jianming 1; Liu, Cheng 1; Liu, Jianjun 1; Zhao, Zhendong 1; Chen, Ming 2; Ma, Youzhi 2
通讯作者	Chen, Ming ; Ma, Youzhi
来源期刊	BMC GENOMICS
ISSN	1471-2164
出版年	2019
卷号	20
英文摘要	BackgroundPotassium (K) is essential to plant growth and development. Foxtail millet (Setaria italic L.) is an important fodder grain crop in arid and semi-arid regions of Asia and Africa because of its strong tolerance to drought and barren stresses. The molecular mechanisms of physiological and biochemical responses and regulations to various abiotic stresses such as low potassium conditions in foxtail millet are not fully understood, which hinders the research and exploitation of this valuable resource.ResultsIn this research, we demonstrated that the millet variety Longgu 25 was the most insensitive variety to low potassium stress among other five varieties. The transcriptome analysis of Longgu 25 variety revealed a total of 26,192 and 26,849 genes from the K+-deficient and normal transcriptomic libraries by RNA-seq, respectively. A total of 1982 differentially expressed genes (DEGs) were identified including 866 up-regulated genes and 1116 down-regulated genes. We conducted a comparative analysis of these DEGs under low-K+ stress conditions and discovered 248 common DEGs for potassium deprivation among foxtail millet, rice and Arabidopsis. Further Gene Ontology (GO) enrichment analysis identified a series of candidate genes that may involve in K+-deficient response and in intersection of molecular functions among foxtail millet, rice and Arabidopsis. The expression profiles of randomly selected 18 candidate genes were confirmed as true DEGs with RT-qPCR. Furthermore, one of the 18 DEGs, SiMYB3, is specifically expressed only in the millet under low-K+ stress conditions. Overexpression of SiMYB3 promoted the main root elongation and improved K+ deficiency tolerance in transgenic Arabidopsis plants. The fresh weight of the transgenic plants was higher, the primary root length was longer and the root surface-area was larger than those of control plants after K+ deficiency treatments.ConclusionsThis study provides a global view of transcriptomic resources relevant to the K+-deficient tolerance in foxtail millet, and shows that SiMYB3 is a valuable genetic resource for the improvement of K+ deficiency tolerance in foxtail millet.
英文关键词	Foxtail millet Potassium Transcriptome RNA sequencing
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000458848800003
WOS关键词	SCALE GENOTYPING APPLICATIONS ; TRANSCRIPTION FACTORS ; CELL-CYCLE ; K+ UPTAKE ; EXPRESSION ; CHANNEL ; RICE ; TRANSPORTER ; SEQUENCE ; DROUGHT
WOS类目	Biotechnology & Applied Microbiology ; Genetics & Heredity
WOS研究方向	Biotechnology & Applied Microbiology ; Genetics & Heredity
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214694
作者单位	1.Shandong Acad Agr Sci, Natl Engn Lab Wheat & Maize, Key Lab Wheat Biol & Genet Improvement North Yell, Crop Res Inst,Minist Agr, Jinan 250100, Shandong, Peoples R China; 2.Chinese Acad Agr Sci, Natl Key Facil Crop Genet Resources & Genet Impro, Key Lab Crop Genet & Breeding, Minist Agr,Inst Crop Sci, Beijing 100081, Peoples R China; 3.Shandong Acad Agr Sci, Shandong Prov Key Lab Crop Genet Improvement Ecol, Biotechnol Res Ctr, Jinan 250100, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Cao, Xinyou,Hu, Liqin,Chen, Xueyan,et al. Genome-wide analysis and identification of the low potassium stress responsive gene SiMYB3 in foxtail millet (Setariaitalica L.)[J],2019,20.
APA	Cao, Xinyou.,Hu, Liqin.,Chen, Xueyan.,Zhang, Rongzhi.,Cheng, Dungong.,...&Ma, Youzhi.(2019).Genome-wide analysis and identification of the low potassium stress responsive gene SiMYB3 in foxtail millet (Setariaitalica L.).BMC GENOMICS,20.
MLA	Cao, Xinyou,et al."Genome-wide analysis and identification of the low potassium stress responsive gene SiMYB3 in foxtail millet (Setariaitalica L.)".BMC GENOMICS 20(2019).