棉花（Gossypium hirsutum L.）应激响应基因的表达研究
Expression studies of stress responsive genes in cotton Gossypium hirsutum L.
机构信息
Department of Plant Breeding and Genetics, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, Pakistan.
College of Agriculture, Bahadur Sub Campus Layyah, Bahauddin Zakariya University, Multan, Pakistan.
出版信息
Mol Biol Rep. 2021 Nov;48(11):7077-7085. doi: 10.1007/s11033-021-06696-0. Epub 2021 Sep 17.
BACKGROUND
Cotton is the world's richest source of natural fiber. Meanwhile cotton plant is top ranked stress sensitive plant thereby affecting its yield and fiber quality. But, in climate change scenario, fiber yield and quality are being affected due to environmental stresses, especially heat, drought and salinity. Present study is aimed to identify cotton genotype harboring prominently expressed stress responsive genes.
METHODS
Four cotton genotypes (IUB-13, IUB-222, IUB-09 and MM-58) were evaluated under drought and salinity stress for yield traits and expression of different stress responsive genes (GhWRKY3, GhDREB2 and GhRDR6).
RESULTS
Pronounced expression of GhWRKY3, GhDREB2and GhRDR6 was observed in cotton variety IUB-13 in stress condition (drought and salinity) as compared to control followed by IUB-222 which revealed that these genotypes might possess substantial potential to cope with environmental hazards encountered in growing season CONCLUSION: Utilization of cotton genotypes i.e., IUB-13 and IUB-222 in cotton breeding program can be very much fruitful for developing cotton genotypes adoptable to climate change.
背景
棉花是世界上最丰富的天然纤维来源。同时，棉花是对胁迫高度敏感的植物，这会影响其产量和纤维质量。但是，在气候变化的背景下，纤维的产量和质量受到环境胁迫的影响，特别是热胁迫、干旱胁迫和盐胁迫。本研究旨在鉴定具有显著表达的胁迫响应基因的棉花基因型。
方法
对四个棉花基因型（IUB-13、IUB-222、IUB-09 和 MM-58）在干旱和盐胁迫下进行了产量性状和不同胁迫响应基因（GhWRKY3、GhDREB2 和 GhRDR6）表达的评估。
结果
在胁迫条件（干旱和盐胁迫）下，与对照相比，棉花品种 IUB-13 中 GhWRKY3、GhDREB2 和 GhRDR6 的表达明显上调，其次是 IUB-222，这表明这些基因型可能具有很大的潜力来应对生长季节遇到的环境危害。
结论
在棉花育种计划中利用棉花基因型，如 IUB-13 和 IUB-222，对于开发适应气候变化的棉花基因型非常有意义。
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