Cascades of Ionic and Molecular Networks Involved in Expression of Genes Underpin Salinity Tolerance in Cotton
Cascades of Ionic and Molecular Networks Involved in Expression of Genes Underpin Salinity Tolerance in Cotton
复制标题
参与基因表达的离子和分子网络级联支撑棉花的耐盐性
DOI：
10.1007/s00344-017-9744-0
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发表时间：
2018-06-01
影响因子：
4.8
通讯作者：
Zhang, Rui
中科院分区：
文献类型：
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作者：
Abid, Muhammad Ali;Liang, Chengzhen;Zhang, Rui
盐胁迫对世界许多地区的农业生产力构成严重威胁。棉花是世界上重要的经济纤维作物，也是耐盐性研究的模式作物。虽然棉花是一种相对耐盐的植物，但严重的盐条件会大大降低其生长发育以及纤维产量和品质。棉花耐盐性研究的重点是寻找盐胁迫下棉花分子遗传过程中的关键分子，以培育耐盐棉花基因型。棉花对盐胁迫的响应在分子、生化和生理水平上表现出多种变化。光合途径和代谢在氧化还原平衡和离子稳态中起着关键作用。几种胁迫信号途径，如脱落酸、盐过度敏感（SOS）、丝裂原活化蛋白激酶（MAPK）、活性氧（ROS）和膜结合Na+/H+反向转运蛋白，都参与了植物的耐盐性。特定基因的激活和调节驱动这种生理和生化可塑性。在棉花中，几种转录因子（例如WRKY、ZFP、NAC、DREB、bZIP和ERF）在盐胁迫耐受性中的作用已被充分记录。我们还强调了未来研究的潜在领域，以阐明耐盐棉花基因型有效育种的关键途径。
Salt stress is a severe threat to agricultural productivity in many parts of the world. Cotton (Gossypium hirsutum) is an economically important fiber crop globally, and is regarded as a model crop for salinity tolerance research. Although cotton is a relatively salt-tolerant plant, its growth and development, as well as fiber yield and quality, are greatly reduced by severe salt conditions. Salinity tolerance studies in cotton have focused on finding the key molecular genetic processes activated in response to salt stress, for breeding salt-tolerant cotton genotypes. In response to salt stress, cotton exhibits a variety of changes at the molecular, biochemical, and physiological levels. Photosynthetic pathways and metabolism play pivotal roles in redox balance and ion homeostasis. Several stress signaling pathways, for example, abscisic acid,salt overly sensitive(SOS),mitogen-activated protein kinase(MAPK), reactive oxygen species (ROS), and membrane-bound Na+/H+antiporters, all participate in salinity tolerance. The activation and regulation of specific genes drive this physiological and biochemical plasticity. In cotton, the roles of several transcription factors (for example,WRKY, ZFP, NAC, DREB, bZIP, andERF)in salt stress tolerance have been well documented. We also highlight the potential areas for future investigation to elucidate the key pathways for effective breeding of salt-tolerant cotton genotypes.