首页> 美国卫生研究院文献>Indian Journal of Microbiology >Ability of Emericella rugulosa to mobilize unavailable P compounds during Pearl millet Pennisetum glaucum (L.) R. Br. crop under arid condition
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Ability of Emericella rugulosa to mobilize unavailable P compounds during Pearl millet Pennisetum glaucum (L.) R. Br. crop under arid condition

机译:在干旱条件下珍珠小米Pennisetum glaucum(L.)R. Br。作物种植期间Eomerella rugulosa能够动员不可用的P化合物

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摘要

Phosphate solubilizing microorganisms are ubiquitous in soils and could play an important role in supplying P to plants where plant unavailable P content in soil was more. A phosphatase and phytase producing fungus Emericella rugulosa was isolated and tested under field condition (Pearl millet as a test crop) in a loamy sand soil. In the experimental soil 68% organic phosphorous was present as phytin; less than 1% of phosphorous was present in a plant available form. The maximum effect of inoculation on different enzyme activities (acid phosphatase, alkaline phosphatase, phytase, and dehydrogenase) was observed between 5 and 8 weeks of plant age. The depletion of organic P was much higher than mineral and phytin P. The microbial contribution was significantly higher than the plant contribution to the hydrolysis of the different P fractions. A significant improvement in plant biomass, root length, seed and straw yield and P concentration of root and shoot resulted from inoculation. The results suggest that Emericella rugulosa produces phosphatases and phytase, which mobilize P and enhance the production of pearl millet.
机译:磷酸盐增溶微生物在土壤中无处不在,并且在向土壤中植物无法利用的磷含量更高的植物供应磷方面可能发挥重要作用。分离出一种产生磷酸酶和肌醇六磷酸酶的真菌欧洲菊(Emericella rugulosa),并在田间条件下(以珍珠粟作为试验作物)在壤土质壤土中进行了测试。在实验土壤中,有68%的有机磷作为植物生长素存在。少于1%的磷以植物可用形式存在。在植株的5至8周内,观察到了接种对不同酶活性(酸性磷酸酶,碱性磷酸酶,植酸酶和脱氢酶)的最大影响。有机磷的消耗量远高于矿物质和植酸磷。微生物对磷的水解贡献显着高于植物。接种导致植物生物量,根长,种子和稻草产量以及根和芽的P浓度显着提高。结果表明,紫花苜蓿产生磷酸酶和植酸酶,从而动员磷并提高珍珠粟的产量。

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