具有多种植物促生长特性的潜在增钾菌的分离与鉴定

Yashika Sood, Raina Singhmar, Vivek Singh, D. Malik
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引用次数: 0

摘要

在土壤中,微生物参与了C、N、P、S转化、外源有机物分解、土壤结构发育和植物养分吸收强化等多种过程。促进植物生长的根瘤菌(rhizobacteria, PGPR)具有直接和间接的生物肥料作用。本研究从根际土壤中分离到两株增钾菌AKY2和HPY10。通过16s rRNA测序鉴定HPY10为粘质沙雷氏菌。菌株HPY10的钾溶化指数为3.2。培养10 d后,AKY2和HPY10分别释放7.29和8.66 mg/L的钾。两个分离株表现出不同的促生活性。本研究建议将分离株AKY2和HPY10用作生物肥料,通过产生磷酸盐增溶剂IAA(吲哚-3-乙酸)来促进作物生长和产量,并对尖孢镰刀菌具有拮抗潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Isolation and Characterization of Potential Potassium Solubilizing Bacteria with Various Plant Growth Promoting Traits
In soil, microorganisms participate in diverse processes such as C, N, P and S conversion, breakdown of xenobiotic organic compounds, soil structure development and plant nutrient uptake intensification. Plant growth promoting rhizobacteria (PGPR) serve as biofertilizer in both direct and indirect ways. In this study, two potassium solubilizing bacteria strains designated as AKY2 and HPY10 were isolated from rhizospheric soil. The bacterial isolate HPY10 was characterized as Serratia marcescens by using 16s rRNA sequencing. The potassium solubilisation index of strain HPY10 was 3.2. The potassium released by isolates AKY2 and HPY10 was 7.29 and 8.66 mg/L after 10 days of incubation respectively. Both isolates were showing different plant growth promoting activity. The present study, suggests use of isolates AKY2 and HPY10 as biofertilizers which is beneficial for crop cultivation by enhancing growth and yield due to the production of phosphate solubilization, IAA (indole-3-acetic acid) and also having antagonistic potential against Fusarium oxysporum.
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