Biopriming with EPS-producing Bacteria of Sub-Himalayan-Soil Origin Recovers the Cold-Induced Vigor Loss in Seedlings

Maity, P and Roy, D and Chowdhury, B and Chakraborty, B and Anand, N and Roy, B and Choudhury, A and Biswas, N and Karmakar, K (2024) Biopriming with EPS-producing Bacteria of Sub-Himalayan-Soil Origin Recovers the Cold-Induced Vigor Loss in Seedlings. In: Indian Journal of Microbiology .

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Abstract

The eastern sub-Himalayan region of India (which belongs to the Cwa zone in Koppen�s classification) experiences severe cold waves during winter which causes a loss in seed vigor. Though most of the studies on cold stress deal with atmospheric temperatures, the seed vigor is majorly affected by the temperature of the soil. Therefore, the vigor loss of tomato and green gram were investigated under low-temperature stress. The analysis of locally available soil temperature showed a median value of 20.3 ± 0.1 °C. When the seeds were subjected to this temperature in vitro, a loss in vigor (70�75) was observed. This was due to the reduced fluidity of the membrane which caused electrolyte leakage. In this regard, the indigenous polysaccharides-producing microbes act as an eco-friendly priming agent to recover the lost vigor. However, seed treatment with Bacillus and Pseudomonas strains didn�t affect the germination-related factors but aided in recovering 30�70 of the lost vigor by enhancing the growth of seedlings. The mode of vigor recovery was the production of indole-acetic acid. This approach can be used to quicken the nursery period of tomato and green gram exposed to low soil temperatures prevalent in the sub-Himalyan terai region. © Association of Microbiologists of India 2024.

Item Type:	Journal Article
Publication:	Indian Journal of Microbiology
Publisher:	Springer
Additional Information:	The copyright for this article belongs to Springer.
Department/Centre:	Division of Biological Sciences > Microbiology & Cell Biology
Date Deposited:	01 Aug 2024 06:11
Last Modified:	01 Aug 2024 06:11
URI:	http://eprints.iisc.ac.in/id/eprint/85752

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