| Autor: |
Awasthi, Shivangi, Gaur, Rajeeva, Shikha |
| Předmět: |
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| Zdroj: |
Biochemical & Cellular Archives; Oct2024, Vol. 24 Issue 2, p1725-1733, 9p |
| Abstrakt: |
The Azotobacter species exhibit high tolerance to drought stress and could alleviate the negative effects exerted by stress on plants. In order to enhance the growth of tomato and chilli plants under drought stress, this study sought to isolate and characterize drought-tolerant Azotobacter strains isolated from uncharted environments exhibiting a variety of plant growth promotion qualities. Total 7 soil samples were collected from different drought prone areas to isolate the Azotobacter species out of which 22 stains were isolated. Initial screening for drought resistance revealed that 6 isolates exhibited maximum tolerance for PEG concentration (25g/100ml). Selected stains were further characterized for plant growth promotional activities (Phohphate solubilization, synthesis of siderophores and indole-3-acetic acid) and induction of drought tolerance in tomato and chilli plants. The bacterized seeds of tomato and chilli were evaluated in the pot soil irrigated 30% of field capacity wherein the isolates showed 15 and 20% higher shoot length respectively, compared with control. Overall results demonstrated that the drought resistant Azotobacter isolates could be used as bio-effector in sustainable agricultural systems under stressful conditions in perspective to improved economic and environmental benefits. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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