Bacterial Consortium (Priestia Endophytica Ndas01f, Bacillus Licheniformis Ndsa24r, and P. Flexa Ndas28r) and Thiourea Mediated Amelioration of Arsenic Stress and Growth Improvement of Oryza Sativa L
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Title:
Bacterial Consortium (Priestia Endophytica Ndas01f, Bacillus Licheniformis Ndsa24r, and P. Flexa Ndas28r) and Thiourea Mediated Amelioration of Arsenic Stress and Growth Improvement of Oryza Sativa L
Description:
The present study analyzed the effects of a microbial consortium ( Priestia endophytica NDAS01F , Bacillus licheniformis NDSA24R, and P. flexa NDAS28R) and thiourea (TU) treatments on growth and responses of rice plants subjected to As stress (50 mg kg -1 in soil) in a pot experiment. The bacterial consortium used in the experiment comprised of bacteria isolated from As contaminated fields of Nadia, West Bengal. The results revealed significant growth improvement and biomass accumulation in rice plants in bacterial and TU treatments as compared to control As treatment. The antioxidant enzymes showed reduced activity along with decline in malondialdehyde levels in bacterial and TU treatments. However, sulfur metabolism and cell wall synthesis was stimulated upon bacterial and TU amendment in plants. The concentration of As in rice roots and shoots was significantly reduced in bacterial and TU treated plants. The most positive responses in terms of As reduction and growth improvement were observed in consortium (B1-2-3) treatment. Hence, the bacterial consortium obtained in the present work may be useful for application in field conditions to achieve As reduction in rice grains and to attain higher growth and yield of plants