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Trichoderma mediated rice-straw compost promotes plant growth and imparts stress tolerance

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Title Trichoderma mediated rice-straw compost promotes plant growth and imparts stress tolerance
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Creator Sarangi, S, Swain, H., Adak, T., Bhattacharyya, P., Mukherjee, A.K.* Kumar, G., Mehtre, S.T.
 
Subject Biocontrol agent; Defense enzymes; Rice straw management; Seedling vigor; Trichoderma-mediated rice straw compost
 
Description Not Available
Rice straw burning is causing huge economic losses and environmental hazards. Microbial mediated ex situ composting could be a viable solution which would not only reduce the straw burning but also will enrich nutrition to the soil. Strains of Trichoderma isolated from tree bark were tested to decompose rice straw efficiently, and the Trichoderma-mediated rice straw compost was used subsequently to improve rice growth. Two isolates of Trichoderma reesei (NRRIT-26 and NRRIT-27) decomposed the straw by producing higher decomposing enzymes, like total cellulase (≥ 1.87 IU mL-1), endoglucanase (≥ 0.75 IU mL-1), xylanase (≥ 163.49 nkat mL-1), and laccase (≥ 11.75 IU mL-1). Trichoderma decomposed rice straw compost had higher nutrient contents (1.97% N, 2.04% K, and 0.88% P) and optimum C/N ratio (28:2) as compared to control. The Trichoderma decomposed rice straw as a nutrient reduced the mean germination time (2.2 days as compared to 4 days in control) and enhanced the seedling vigor and total chlorophyll content in rice. Expression of defense enzymes, like catalase (≥ 200% both in shoot and root), peroxidase (≥ 180% in root and ≥ 300% in shoot), and superoxide dismutase (≥ 160% in root and ≥ 90% in shoot), were higher in treated plants as compared to control indicating higher stress tolerance ability to crops. We conclude that the Trichoderma-mediated rice straw management is a viable option and has the potential to reduce straw burning, and at the same time, the compost could enrich soil fertility and impart intrinsic stress tolerance to rice.
Board of Research in Nuclear Sciences, DAE
 
Date 2022-03-17T05:27:54Z
2022-03-17T05:27:54Z
2021-04-12
 
Type Research Paper
 
Identifier Sarangi, S, Swain, H., Adak, T., Bhattacharyya, P., Mukherjee, A.K.* Kumar, G., Mehtre, S.T. (2021). Trichoderma mediated rice-straw compost promotes plant growth and imparts stress tolerance. Environmental Science and Pollution Research. https://doi.org/10.1007/s11356-021-13701-3
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http://krishi.icar.gov.in/jspui/handle/123456789/70282
 
Language English
 
Relation Not Available;
 
Publisher Springer