首页|海岛棉耐盐相关基因GbPLA1-32的克隆及生物信息学分析

海岛棉耐盐相关基因GbPLA1-32的克隆及生物信息学分析

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为了解海岛棉GbPLA1-32基因结构特征及功能,本研究以海岛棉'海7124'为实验材料,利用前期耐盐转录组测序结果筛选得到差异表达基因并进行克隆.通过生物信息学分析,获得'海7124'GbPLA1-32基因全长CDS,分析该基因编码蛋白的理化性质、鉴定其亲水性与疏水性,对磷酸化和糖基化位点、信号肽和跨膜区以及蛋白质结构进行预测,确定亚细胞定位并构建系统进化树.结果表明,该基因编码区全长1 530 bp,编码509个氨基酸,编码蛋白在磷脂酶A1家族,属α/β-水解酶超家族.它属于亲水性蛋白,不存在明显信号肽且不具有跨膜结构,亚细胞定位于叶绿体中.同时,α-螺旋、延伸链、β-转角和无规则卷曲这4个元件构成了GbPLA1-32蛋白的二级结构.进化树分析表明海岛棉与陆地棉亲缘关系最为接近,根据其编码蛋白将该基因命名为GbPLA1-32.RT-qPCR分析结果表明,GbPLA1-32基因能够对PEG和盐两种胁迫做出响应.本研究结果可为进一步阐明GbPLA1-32在海岛棉中的生物学功能提供参考.
Cloning and Bioinformatics Analysis of the Salt Tolerance Related Gene GbPLA 1-32 in Gossypium barbadense
In order to understand the structural characteristics and functions of the sea island cotton GbPLA 1-32 gene.In this study,the'Hai7124'in the sea island cotton was used as the experimental material,and the differen-tially expressed genes were screened and cloned using the results of salt-tolerant transcriptome sequencing.Through bioinformatics analysis,the full-length CDS of'Hai7124'GbPLA 1-32 gene was obtained.Analyze the physical and chemical properties of the protein encoded by the gene.Identify its hydrophilicity and hydrophobici-ty.Prediction of phosphorylation and glycosylation sites,signal peptides and transmembrane regions,and protein structure.Determine subcellular location and construct a phylogenetic tree.The results showed that the coding re-gion of the gene was 1 530 bp in length,encoding 509 amino acids,and the encoded protein was in the phospholi-pase Al family,belonging to the α/β-hydrolase superfamily.It is a hydrophilic protein,there is no obvious signal peptide and no transmembrane structure,subcellular localization in the chloroplast.At the same time,the four ele-ments of α-helix,extended strand,β-turn and random coil constitute the secondary structure of the GbPLAl-32 protein.The phylogenetic tree analysis showed that the relationship between sea island cotton and upland cotton is the closest.The gene was named GbPLA 1-32 according to its coding protein.The results of RT-qPCR analysis showed that the GbPLA 1-32 gene can respond to salt and alkali stress.The results of this study can provide refer-ences for further elucidating the biological functions of GbPLA 1-32 in Gossypium barbadense.

Gossypium barbadensePhospholipase A1Gene cloningExpression analysisBioinformatics analysis

张红、张悦新、徐楠、芮存、范亚朋、王晶、韩明格、王琴琴、孙亮庆、陈修贵、陆许可、王俊娟、王德龙、王帅、郭丽雪、赵兰杰、陈超、陈全家、叶武威

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新疆农业大学农学院,教育部棉花工程研究中心,乌鲁木齐,830052

中国农业科学院棉花研究所,棉花生物学国家重点实验室,郑州大学研究基地,农业部棉花遗传改良重点开放实验室,安阳,455000

海岛棉 磷脂酶A1 基因克隆 表达分析 生物信息学分析

国家自然科学基金青年基金

32001460

2024

分子植物育种
海南省生物工程协会

分子植物育种

CSTPCD北大核心
影响因子:0.765
ISSN:1672-416X
年,卷(期):2024.22(5)
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