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Genome-wide identification and expression analysis of two component system genes in Cicer arietinum

机译:Cicer Arietinum中两种组分系统基因的基因组鉴定及表达分析

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The two-component system (TCS) plays an important role in signal transduction pathways, cytokinin signaling and stress resistance of prokaryotes and eukaryotes. It is comprised of three types of proteins in plants; histidine kinases (HKs), histidine phosphotransfer proteins (HPs) and response regulators (RRs). Chickpea (Cicer arietinum L.) is one of the most important legume crops worldwide with special economic value in semi-arid tropics. Availability of complete genome sequence of chickpea presents a valuable resource for comparative analysis among angiosperms. In current study, Arabidopsis thaliana and Oryza sativa were used as reference plant species for comparative genomics analysis with C. arietinum. A genome-wide computational survey enabled us to identify putative members of TCS protein family including 18HKs, 26 RRs (7 type-A, 7 type-B, 2 type C and 10 pseudo) and 7 HPs (5 true and 2pseudo) genes in chickpea. The predicted TCS genes displayed family specific intron/exon organization and were randomly distributed across all the eight chromosomes. Comparative phylogenetic and evolutionary analysis suggested a variable conservation of TCS genes in relation to mono/dicot model plants and segmental duplication was the principal route of expansion for this family in chickpea. The promoter regions of TCS genes exhibited several abiotic stress-related cis-elements indicating their involvement in abiotic stress response. The expression analysis of TCS genes demonstrated stress (drought, heat, osmotic and salt) specific differential expression. Current study provides insight into TCS genes in C. arietinum, which will be helpful for further functional analysis of these genes in response to different abiotic stresses.
机译:双组分系统(TCS)在信号转导途径,细胞素素信号传导和原核生物和真核生物的应力阻力中起重要作用。它由植物中的三种类型的蛋白质组成;组氨酸激酶(HKS),组氨酸磷酸酯蛋白(HPS)和反应调节剂(RRS)。 Chickpea(Cicer Arietinum L.)是全球最重要的豆科作物之一,具有半干旱热带地区的特殊经济价值。 Chickpea的完整基因组序列的可用性呈现了有价值的资源,用于缓解植物的比较分析。在目前的研究中,拟南芥和羚羊苜蓿用C.羊肉用作比较基因组学分析的参考植物物种。全基因组计算调查使我们能够识别包括18小时,26 rrs(7型,7型-b,2型C和10型伪)和7个HPS(5真和2pseudo)基因的TCS蛋白质家族的推定成员鹰嘴豆。预测的TCS基因显示了家庭特定的内含子/外显子组织,并随机分布在所有八条染色体上。对比系统发育和进化分析表明,与单体/单位式模型植物相关的TCS基因的可变守恒,并且节段制重复是鹰嘴豆中该家庭的主要膨胀路径。 TCS基因的启动子区域表现出几种非生物胁迫相关的顺式元素,表明其参与非生物应激反应。 TCS基因的表达分析表明应力(干旱,热,渗透盐)特异性差异表达。目前的研究提供了在C.Irietinum中的TCS基因的洞察力,这将有助于对不同的非生物胁迫对这些基因进行进一步的功能分析。

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