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Alleviation of salinity stress in plants by endophytic plant-fungal symbiosis: Current knowledge, perspectives and future directions
Plant and Soil ( IF 4.9 ) Pub Date : 2020-07-09 , DOI: 10.1007/s11104-020-04618-w
Sneha Gupta , Martino Schillaci , Robert Walker , Penelope M. C. Smith , Michelle Watt , Ute Roessner

Salinization of soil with sodium chloride ions inhibits plant functions, causing reduction of yield of crops. Salt tolerant microorganisms have been studied to enhance crop growth under salinity. This review describes the performance of endophytic fungi applied to crops as a supplement to plant genetics or soil management to alleviate salt stress in crops. This is achieved via inducing systemic resistance, increasing the levels of beneficial metabolites, activating antioxidant systems to scavenge ROS, and modulating plant growth phytohormones. Colonization by endophytic fungi improves nutrient uptake and maintains ionic homeostasis by modulating ion accumulation, thereby restricting the transport of Na + to leaves and ensuring a low cytosolic Na + :K + ratio in plants. Participating endophytic fungi enhance transcripts of genes encoding the high Affinity Potassium Transporter 1 (HKT1) and the inward-rectifying K + channels KAT1 and KAT2, which play key roles in regulating Na + and K + homeostasis. Endophytic-induced interplay of strigolactones play regulatory roles in salt tolerance by interacting with phytohormones. Future research requires further attention on the biochemical, molecular and genetic mechanisms crucial for salt stress resistance requires further attention for future research. Furthermore, to design strategies for sustained plant health with endophytic fungi, a new wave of exploration of plant-endophyte responses to combinations of stresses is mandatory.

中文翻译:

通过内生植物-真菌共生缓解植物盐分胁迫:当前知识、观点和未来方向

氯化钠离子使土壤盐碱化抑制植物功能,导致作物减产。已经研究了耐盐微生物以在盐度下促进作物生长。本综述描述了应用于作物的内生真菌作为植物遗传学或土壤管理的补充,以减轻作物盐分胁迫的性能。这是通过诱导系统抗性、增加有益代谢物的水平、激活抗氧化系统以清除 ROS 和调节植物生长激素来实现的。内生真菌的定植可通过调节离子积累来提高养分吸收并维持离子稳态,从而限制 Na + 向叶片的运输并确保植物中较低的细胞质 Na + :K + 比率。参与的内生真菌增强了编码高亲和力钾转运蛋白 1 (HKT1) 和内向整流 K + 通道 KAT1 和 KAT2 的基因的转录,这在调节 Na + 和 K + 稳态中起关键作用。内生诱导的独脚金内酯相互作用通过与植物激素相互作用在耐盐性中发挥调节作用。未来的研究需要进一步关注对盐胁迫抗性至关重要的生化、分子和遗传机制,需要进一步关注未来的研究。此外,为了设计内生真菌持续植物健康的策略,必须进行植物-内生菌对胁迫组合反应的新一波探索。其在调节 Na + 和 K + 稳态中起关键作用。内生诱导的独脚金内酯相互作用通过与植物激素相互作用在耐盐性中发挥调节作用。未来的研究需要进一步关注对盐胁迫抗性至关重要的生化、分子和遗传机制,需要进一步关注未来的研究。此外,为了设计内生真菌持续植物健康的策略,必须进行植物-内生菌对胁迫组合反应的新一波探索。其在调节 Na + 和 K + 稳态中起关键作用。内生诱导的独脚金内酯相互作用通过与植物激素相互作用在耐盐性中发挥调节作用。未来的研究需要进一步关注对盐胁迫抗性至关重要的生化、分子和遗传机制,需要进一步关注未来的研究。此外,为了设计内生真菌持续植物健康的策略,必须进行植物-内生菌对胁迫组合反应的新一波探索。
更新日期:2020-07-09
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