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The Role of Phyllosphere Bacteria in Improving Cotton Growth and Yield Under Drought Conditions

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Title The Role of Phyllosphere Bacteria in Improving Cotton Growth and Yield Under Drought Conditions
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Creator S. Sharath, S. Triveni , Y. Nagaraju, P. C. Latha and B. Vidyasagar
 
Subject drought, water potential, ACC deaminase, phyllosphere, exopolysaccharides (EPS)
 
Description Not Available
Cotton is a valuable fiber and cash crop in Telangana, India. This study examines
how crop growth and fiber yield are affected by the uneven distribution of rainfall.
Cotton phyllosphere bacterial isolates were gathered from the Rangareddy andWarangal
Districts of Telangana, and in total, 31 phyllosphere bacterial isolates were obtained.
These isolates were screened for drought tolerance and it was found that fifteen suitable
isolates grew at −1.25 Mpa stress level with copious amounts of exopolysaccharides
production. These isolates were further screened for ACC deaminase production and
we observed 0.13–0.40mM of a-ketobutyrate per milligram of cellular protein per
hour. Five efficient bacterial isolates, namely Pseudomonas stutzeri, Acinetobacter sp.,
Bacillus mojavensis, Pseudomonas chlororaphis, and Enterobacter asburiae were found
to produce ACC deaminase and were able to grow at −1.25 Mpa stress level. The cotton
variety ADB-542 (drought susceptible) was treated with drought-tolerant five isolates.
Acinetobacter sp. treated seeds had the highest seed germination and seedling vigor of
76.67 and 45.81%, respectively. The nutrient status of inoculated plots was considerably
improved. The root length, fresh weight, proline content, and the number of bolls were
increased by 28.52, 41.9, 28.78, and 12.99%, respectively, with the inoculation of
Acinetobacter sp., to plants at −0.75 Mpa water potential. Overall the performance of
cotton was improved significantly with the inoculation of phyllosphere bacteria to seeds;
hence they can be recommended for the application of field crops as bio-inoculants.
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Date 2022-04-05T15:18:55Z
2022-04-05T15:18:55Z
2021-11-12
 
Type Research Paper
 
Identifier 77. Sharath, S., Triveni, S., Nagaraju, Y., Latha, P. C. and Vidyasaga,r B. 2021. The Role of Phyllosphere Bacteria in Improving Cotton Growth and Yield Under Drought Conditions. Frontiers in Agronomy 3: 680466. doi: 10.3389/fagro.2021.680466
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http://krishi.icar.gov.in/jspui/handle/123456789/71204
 
Language English
 
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Publisher Not Available