Microbial Biotechnology Research Laboratory (MBRL), Department of Biochemistry, Manipur University, Canchipur, 795003, India.
ICAR-NEH Quality Analysis Laboratory, ICAR Research Complex for NEH Region, Manipur Centre, Imphal, India.
Arch Microbiol. 2022 Aug 4;204(9):539. doi: 10.1007/s00203-022-03136-w.
103 bacterial isolates obtained from 8 ethnomedicinal plants in Manipur, India were studied for antifungal and plant growth promoting (PGP) activities. Forty-six (46), out of 62 antifungal isolates, showed potent activities against R. solani. Since R. solani (RS), a sheath blight pathogen, threatens rice yields worldwide, the present study was aimed at discovering promising bioinoculants with anti-RS and PGP potential on rice. Twenty-nine (29) endophytic isolates exhibiting promising anti-RS and PGP activities were subjected to seed vigor assays on rice (var. Jatra) and 16 were found to enhance rice seedling vigour by 70% or more over the control. Four (4) strains, Streptomyces sp. (AcRz21), Alkalihalobacillus sp. (PtL11), Bacillus sp. (TgIb5), and Priestia sp. (TgIb12) with the highest vigor indices were studied for growth promotion of rice in field conditions under pathogen-challenged and pathogen-free conditions. These bioactive strains were able to significantly enhance root and shoot biomass and reduce lesion heights caused by R. solani.
从印度曼尼普尔邦的 8 种传统药用植物中获得的 103 株细菌分离物被研究其抗真菌和植物促生长（PGP）活性。在 62 株抗真菌分离物中，有 46 株对丝核菌（R. solani）表现出很强的活性。由于丝核菌（RS）是一种鞘腐病病原体，它威胁着全球的水稻产量，因此本研究旨在发现具有抗 RS 和 PGP 潜力的有前途的生物接种剂对水稻。表现出有希望的抗 RS 和 PGP 活性的 29 株内生分离物在水稻（品种 Jatra）上进行了种子活力测定，其中 16 株比对照提高了 70%或更多的水稻幼苗活力。具有最高活力指数的 4 株（株 Streptomyces sp.（AcRz21）、Alkalihalobacillus sp.（PtL11）、Bacillus sp.（TgIb5）和 Priestia sp.（TgIb12））在有和无病原体条件下的田间条件下研究了对水稻生长的促进作用。这些生物活性菌株能够显著提高根和芽的生物量，并降低丝核菌引起的病斑高度。
