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http://krishi.icar.gov.in/jspui/handle/123456789/6440
Title: | Rapid induction of small heat shock proteins improves physiological adaptation to high temperature stress in peanut. |
Other Titles: | Not Available |
Authors: | K Chakraborty, SK Bishi, AL Singh, PV Zala, MK Mahatma, KA Kalariya, RA JatNot Available |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR-Directorate of Groundnut Research |
Published/ Complete Date: | 2018-01-01 |
Project Code: | Not Available |
Keywords: | canopy temperature, groundnut, heat stress, leaf sugar profile, pollen viability, small heat shockprotein |
Publisher: | wiley |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | With the changing climatic scenario and increasing global mean temperature, heatstress became a major limiting factor for today’s agriculture. To identify the underly-ing mechanism associated with heat tolerance in peanut, two experiments (field andgrowth chamber) were conducted with four genotypes (ICGS 44, GG 7, AK 159 andDRG 1) having differential high temperature stress sensitivity. Field grown plantsunder three different temperature (D1,D2and D3) regimes simulated three tempera-ture treatment effects with a variability of 3–4/4–5°C in mean day/night tempera-ture, respectively. In growth chamber, imposition of heat shock (10°C aboveambient inside growth chamber) revealed not only rapid induction (within 0.5 hr) ofHSPs, especially small HSPs (HSP 17, HSP 40) in tolerant genotypes, but also itssustenance for longer duration (2 hr), which might help them to have better physio-logical adaptation strategies under high temperature stress. This was evident fromsignificant advancement in phenophases observed with increase in temperature by15–18 days at physiological maturity, while pollen viability and membrane stabilityreduced below 50% and 41%, respectively in DRG 1 with increase in mean day/night temperature. Maintenance of higher photosynthesis and transpiration rate andstomatal conductance helped the tolerant genotype ICGS 44 to keep relativelycooler canopy and higher photosynthates, ensuring better physiological condition inthis genotype under heat stress. Significant increase (~2.5-fold) in inositol and hex-oses (glucose and fructose) content and reduction (>50%) in sucrose content in leaftissues indicated degradation of storage carbohydrates for improved osmotic adjust-ment especially in tolerant genotypes under elevated temperature |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Article |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Journal of Agronomy and Crop Science |
NAAS Rating: | 9.06 |
Volume No.: | 204 |
Page Number: | 285-297 |
Name of the Division/Regional Station: | Biochemistry |
Source, DOI or any other URL: | https://doi.org/10.1111/jac.12260 |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/6440 |
Appears in Collections: | CS-DGR-Publication |
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