干旱区生态环境知识资源中心(Arid): Differential responses of sorghum genotypes to drought stress revealed by physio-chemical and transcriptional analysis

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DOI	10.1007/s11033-021-06279-z
	Differential responses of sorghum genotypes to drought stress revealed by physio-chemical and transcriptional analysis
	Rajarajan, K.; Ganesamurthy, K.; Raveendran, M.; Jeyakumar, P.; Yuvaraja, A.; Sampath, P.; Prathima, P. T.; Senthilraja, C.
通讯作者	Rajarajan, K (corresponding author), Tamil Nadu Agr Univ, Coimbatore, Tamil Nadu, India. ; Rajarajan, K (corresponding author), ICAR Cent Agroforestry Res Inst, Jhansi, Uttar Pradesh, India.
来源期刊	MOLECULAR BIOLOGY REPORTS
ISSN	0301-4851
EISSN	1573-4978
出版年	2021
卷号	48 期号:3 页码:2453-2462
英文摘要	Sorghum is an essential food crop for millions of people in the semi-arid regions of the world, where its production is severely limited by drought stress. Drought in the early stages of crop growth and development irreversibly interferes, which leads to poor yield. The effect of drought stress in sorghum was studied at physiological, biochemical, and molecular levels in a set of two genotypes differing in their tolerance to drought. Drought stress was imposed by restraining water for 10 days on 25 days old seedlings. A significant influence of water stress was observed on the considered morpho-physiological and biochemical traits. The genotype DRT1019 exhibited physiological and biochemical indicators of drought avoidance through delayed leaf rolling, osmotic adjustment, ideal gas-exchange system, solute accumulation, an increased level of enzyme synthesis and root trait expression as compared to the ICSV95022 genotype. Furthermore, differences in the metabolite changes viz. total carbohydrate, total amides, and lipids were found between the two genotypes under drought stress. In addition, transcript profiling of potential candidate drought genes such as SbTIP3-1, SbDHN1, SbTPS, and SbDREB1A revealed up-regulation in DRT1019, which corresponded with other important physiological and biochemical parameters exhibited in the genotype. In conclusion, this study provides an improved understanding of whole plant response to drought stress in sorghum. Additionally, our results provide promising candidate genes for drought tolerance in sorghum that can be used as potential markers for drought tolerance breeding programs.
英文关键词	Physiology Biochemistry Sorghum Candidate genes Drought tolerance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000631767300002
WOS类目	Biochemistry & Molecular Biology
WOS研究方向	Biochemistry & Molecular Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351159
作者单位	[Rajarajan, K.; Ganesamurthy, K.; Raveendran, M.; Jeyakumar, P.; Yuvaraja, A.; Senthilraja, C.] Tamil Nadu Agr Univ, Coimbatore, Tamil Nadu, India; [Sampath, P.] Agr & Agri Food Canada AAFC, 107 Sci Pl, Saskatoon, SK S7N 0X2, Canada; [Prathima, P. T.] Sugarcane Breeding Inst, Genom Lab, Coimbatore, Tamil Nadu, India; [Rajarajan, K.] ICAR Cent Agroforestry Res Inst, Jhansi, Uttar Pradesh, India
推荐引用方式 GB/T 7714	Rajarajan, K.,Ganesamurthy, K.,Raveendran, M.,et al. Differential responses of sorghum genotypes to drought stress revealed by physio-chemical and transcriptional analysis[J],2021,48(3):2453-2462.
APA	Rajarajan, K..,Ganesamurthy, K..,Raveendran, M..,Jeyakumar, P..,Yuvaraja, A..,...&Senthilraja, C..(2021).Differential responses of sorghum genotypes to drought stress revealed by physio-chemical and transcriptional analysis.MOLECULAR BIOLOGY REPORTS,48(3),2453-2462.
MLA	Rajarajan, K.,et al."Differential responses of sorghum genotypes to drought stress revealed by physio-chemical and transcriptional analysis".MOLECULAR BIOLOGY REPORTS 48.3(2021):2453-2462.