Potassium is one of the most important macronutrients,as previously discussed, for plant growth and yield productionunder different conditions including stress. Itcan significantly enhance plant tolerance under saltstress by affecting plant physiology and the productionof antioxidant enzymes. However, almost all the potassiumin the earth’s crust is not available for plant andmicrobial use, as it is present in rocks and silicate minerals[109].The important alternative to increase Kþ in the soil isthe use of potassium solubilizing bacteria (PSB) such asBacillus spp., and Pseudomonas spp., which are able toenhance Kþ availability in the soil from insoluble sources.The bacteria are able to produce plant hormonesand alleviate salt stress by decreasing lipid peroxidationand enhancing the rigidity of the plant cell membrane.Research has indicated that the use of PSB increasedwheat growth under the salinity of 2.3–3.5 d Sm1 (lessavailability of K and P for plant use) by adjusting plantphysiology and reducing cellular lipid peroxidation.Accordingly, the use of PSM is a useful tool for theincreased production of wheat in saline fields, and by12 M. MIRANSARI AND D. SMITHdecreasing the use of chemicals it can contribute to thesustainable production of wheat under salinitystress [109].
Potassium is one of the most important macronutrients,<br>as previously discussed, for plant growth and yield production<br>under different conditions including stress. It<br>can significantly enhance plant tolerance under salt<br>stress by affecting plant physiology and the production<br>of antioxidant enzymes. However, almost all the potassium<br>in the earth’s crust is not available for plant and<br>microbial use, as it is present in rocks and silicate minerals<br>[109].<br>The important alternative to increase Kþ in the soil is<br>the use of potassium solubilizing bacteria (PSB) such as<br>Bacillus spp., and Pseudomonas spp., which are able to<br>enhance Kþ availability in the soil from insoluble sources.<br>The bacteria are able to produce plant hormones<br>and alleviate salt stress by decreasing lipid peroxidation<br>and enhancing the rigidity of the plant cell membrane.<br>Research has indicated that the use of PSB increased<br>wheat growth under the salinity of 2.3–3.5 d Sm1 (less<br>availability of K and P for plant use) by adjusting plant<br>physiology and reducing cellular lipid peroxidation.<br>Accordingly, the use of PSM is a useful tool for the<br>increased production of wheat in saline fields, and by<br>12 M. MIRANSARI AND D. SMITH<br>decreasing the use of chemicals it can contribute to the<br>sustainable production of wheat under salinity<br>stress [109].
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