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Plant growth promoting bacteria as an alternative strategy for salt tolerance in plants: A review
Microbiological Research ( IF 6.7 ) Pub Date : 2018-02-13 , DOI: 10.1016/j.micres.2018.02.003
Muhammad Numan , Samina Bashir , Yasmin Khan , Roqayya Mumtaz , Zabta Khan Shinwari , Abdul Latif Khan , Ajmal Khan , Ahmed AL-Harrasi

Approximately 5.2 billion hectare agriculture land are affected by erosion, salinity and soil degradation. Salinity stress has significantly affecting the fertile lands, and therefore possesses a huge impact on the agriculture and economy of a country. Salt stress has severe effects on the growth and development of plants as well as reducing its yield. Plants are inherently equipped with stress tolerance ability to responds the specific type of stress. Plants retained specific mechanisms for salt stress mitigation, such as hormonal stimulation, ion exchange, antioxidant enzymes and activation of signaling cascades on their metabolic and genetic frontiers that sooth the stressed condition. Additional to the plant inherent mechanisms, certain plant growth promoting bacteria (PGPB) also have specialized mechanism that play key role for salt stress tolerance and plant growth promotion. These bacteria triggers plants to produce different plant growth hormones like auxin, cytokinine and gibberellin as well as volatile organic compounds. These bacteria also produces growth regulators like siderophore, which fix nitrogen, solubilize organic and inorganic phosphate. Considering the importance of PGPB in compensation of salt tolerance in plants, the present study has reviewed the different aspect and mechanism of bacteria that play key role in promoting plants growth and yield. It can be concluded that PGPB can be used as a cost effective and economical tool for salinity tolerance and growth promotion in plants.



中文翻译:

植物生长促进细菌作为植物耐盐性的替代策略:综述

大约52亿公顷的农业用地受到侵蚀,盐碱化和土壤退化的影响。盐分胁迫严重影响了肥沃的土地,因此对一个国家的农业和经济产生了巨大影响。盐胁迫对植物的生长和发育以及降低其产量均具有严重影响。植物固有地具有胁迫耐受能力,以响应特定类型的胁迫。植物保留了缓解盐胁迫的特定机制,例如激素刺激,离子交换,抗氧化酶以及在其代谢和遗传前沿的信号级联的激活,从而缓解了胁迫条件。除了工厂固有的机制,某些植物生长促进细菌(PGPB)也具有专门的机制,这些机制在耐盐胁迫和促进植物生长中起关键作用。这些细菌触发植物产生不同的植物生长激素,如生长素,细胞分裂素和赤霉素以及挥发性有机化合物。这些细菌还产生诸如铁载体的生长调节剂,其固定氮,溶解有机和无机磷酸盐。考虑到PGPB在补偿植物耐盐性中的重要性,本研究综述了在促进植物生长和产量中起关键作用的细菌的不同方面和机制。可以得出结论,PGPB可以作为一种经济有效的经济工具来耐盐碱和促进植物的生长。这些细菌触发植物产生不同的植物生长激素,如生长素,细胞分裂素和赤霉素以及挥发性有机化合物。这些细菌还产生诸如铁载体的生长调节剂,其固定氮,溶解有机和无机磷酸盐。考虑到PGPB在补偿植物耐盐性中的重要性,本研究综述了在促进植物生长和产量中起关键作用的细菌的不同方面和机制。可以得出结论,PGPB可以作为一种经济有效的经济工具来耐盐碱和促进植物的生长。这些细菌触发植物产生不同的植物生长激素,如生长素,细胞分裂素和赤霉素以及挥发性有机化合物。这些细菌还产生诸如铁载体的生长调节剂,其固定氮,溶解有机和无机磷酸盐。考虑到PGPB在补偿植物耐盐性中的重要性,本研究综述了在促进植物生长和产量中起关键作用的细菌的不同方面和机制。可以得出结论,PGPB可以作为一种经济有效的经济工具来耐盐碱和促进植物的生长。溶解有机和无机磷酸盐。考虑到PGPB在补偿植物耐盐性中的重要性,本研究综述了在促进植物生长和产量中起关键作用的细菌的不同方面和机制。可以得出结论,PGPB可以作为一种经济有效的经济工具来耐盐碱和促进植物的生长。溶解有机和无机磷酸盐。考虑到PGPB在补偿植物耐盐性中的重要性,本研究综述了在促进植物生长和产量中起关键作用的细菌的不同方面和机制。可以得出结论,PGPB可以作为一种经济有效的经济工具来耐盐碱和促进植物的生长。

更新日期:2018-02-13
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