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Bacterial exopolysaccharide amendment improves the shelf life and functional efficacy of bioinoculant under salinity stress.
Srivastava, Sonal; Bhattacharjee, Annapurna; Dubey, Shubham; Sharma, Shilpi.
Afiliação
  • Srivastava S; Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India.
  • Bhattacharjee A; Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India.
  • Dubey S; Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India.
  • Sharma S; Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India.
J Appl Microbiol ; 135(7)2024 Jul 02.
Article em En | MEDLINE | ID: mdl-38960398
ABSTRACT

AIM:

Bacterial exopolysaccharides (EPS) possess numerous properties beneficial for the growth of microbes and plants under hostile conditions. The study aimed to develop a bioformulation with bacterial EPS to enhance the bioinoculant's shelf life and functional efficacy under salinity stress. METHODS AND

RESULTS:

High EPS-producing and salt-tolerant bacterial strain (Bacillus haynessi SD2) exhibiting auxin-production, phosphate-solubilization, and biofilm-forming ability, was selected. EPS-based bioformulation of SD2 improved the growth of three legumes under salt stress, from which pigeonpea was selected for further experiments. SD2 improved the growth and lowered the accumulation of stress markers in plants under salt stress. Bioformulations with varying EPS concentrations (1% and 2%) were stored for 6 months at 4°C, 30°C, and 37°C to assess their shelf life and functional efficacy. The shelf life and efficacy of EPS-based bioformulation were sustained even after 6 months of storage at high temperature, enhancing pigeonpea growth under stress in both control and natural conditions. However, the efficacy of non EPS-based bioformulation declined following four months of storage. The bioformulation (with 1% EPS) modulated bacterial abundance in the plant's rhizosphere under stress conditions.

CONCLUSION:

The study brings forth a new strategy for developing next-generation bioformulations with higher shelf life and efficacy for salinity stress management in pigeonpea.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Polissacarídeos Bacterianos / Estresse Salino Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Polissacarídeos Bacterianos / Estresse Salino Idioma: En Ano de publicação: 2024 Tipo de documento: Article