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Spikelet proteomic response to combined water deficit and heat stress in rice

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Title Spikelet proteomic response to combined water deficit and heat stress in rice
 
Creator Jagadish, Krishna S.V.
Muthurajan, Raveendram
Rang ZW
Malo R
Heuer S
Bennett, J.
Craufurd, Peter Q.
 
Subject agriculture
climate
rice
soil water deficit
heat stress
spikelets
flowering
 
Description In future climates, rice crops will be frequently exposed to water deficit and heat stress at the most sensitive flowering stage, causing spikelet sterility and yield losses. Water deficit alone and in combination with heat stress significantly reduced peduncle elongation, trapping 32% and 55% of spikelets within the leaf sheath, respectively. Trapped spikelets had lower spikelet fertility (66% in control) than those exserted normally (>93%). Average weighted fertility of exserted spikelets was lowest with heat stress (35%) but higher with combined stress (44%), suggesting acquired thermo-tolerance when preceded by water-deficit stress. Proteins favoring pollen germination, i.e., pollen allergens and beta expansin, were highly up-regulated with water deficit but were at normal levels under combined stress. The chaperonic heat shock transcripts and proteins were significantly up-regulated under combined stress compared with either heat or water deficit. The importance of spikelet proteins responsive to water deficit and heat stress to critical physiological processes during flowering is discussed.
 
Date 2011-03
2014-08-15T12:13:11Z
2014-08-15T12:13:11Z
 
Type Journal Article
 
Identifier Jagadish SVK, Muthurajan R, Rang ZW, Malo R, Heuer S, Bennett J, Craufurd PQ. 2011. Spikelet proteomic response to combined water deficit and heat stress in rice (Oryza sativa cv. N22). Rice 4 (1), 1-11. DOI: 10.1007/s12284-011-9059-x
1939-8433
https://hdl.handle.net/10568/41942
https://doi.org/10.1007/s12284-011-9059-x
 
Language en
 
Rights CC-BY-2.0
Open Access
 
Publisher Springer Science and Business Media LLC
 
Source Rice