Characterization of Small Heat Shock Proteins Associated with Maize Tolerance to Combined Drought and Heat Stress

2010 ◽  
Vol 29 (4) ◽  
pp. 455-464 ◽  
Author(s):  
Xiuli Hu ◽  
Yanhui Li ◽  
Chaohai Li ◽  
Hairong Yang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Heat Stress ◽  
Heat Shock ◽  
Heat Shock Proteins ◽  
Small Heat Shock Proteins ◽  
Shock Proteins ◽  
Drought And Heat Stress

scholarly journals Immunomodulation of function of small heat shock proteins prevents their assembly into heat stress granules and results in cell death at sublethal temperatures

2004 ◽  
Vol 41 (2) ◽  
pp. 269-281 ◽  
Author(s):  
Sergey Miroshnichenko ◽  
Joanna Tripp ◽  
Uta zur Nieden ◽  
Dieter Neumann ◽  
Udo Conrad ◽  
...  
Keyword(s):  
Cell Death ◽  
Heat Stress ◽  
Heat Shock ◽  
Heat Shock Proteins ◽  
Stress Granules ◽  
Small Heat Shock Proteins ◽  
Shock Proteins

In vivo evidence from an Agrostis stolonifera selection genotype that chloroplast small heat-shock proteins can protect photosystem II during heat stress

2002 ◽  
Vol 29 (8) ◽  
pp. 935 ◽  
Author(s):  
Scott A. Heckathorn ◽  
Samantha L. Ryan ◽  
Joanne A. Baylis ◽  
Dongfang Wang ◽  
E. William Hamilton III ◽  
...  
Keyword(s):  
Heat Stress ◽  
Electron Transport ◽  
Heat Shock ◽  
Heat Shock Proteins ◽  
Agrostis Stolonifera ◽  
Small Heat Shock Proteins ◽  
O2 Evolution ◽  
Shock Proteins ◽  
Tolerant Genotype

Previous in vitro experiments indicated that chloroplast small heat-shock proteins (sHsp) could associate with thylakoids and protect PSII during heat and other stresses, possibly by stabilizing the O2-evolving complex (OEC). However, in vivo evidence of sHsp protection of PSII is equivocal at present. Using previously characterized selection genotypes of Agrostis stolonifera Huds. that differ in thermotolerance and production of chloroplast sHsps, we show that both genotypes contain thylakoid-associating sHsps, but the heat-tolerant genotype, which produces an additional sHsp isoform not made by the sensitive genotype, produces a greater quantity of chloroplast and thylakoid sHsp. Following a pre-heat stress to induce sHsps, in vivo PSII function decreased less at high temperatures in the tolerant genotype. Differences in PSII thermotolerance in vivo were associated with increased thermotolerance of the OEC proteins and O2-evolving function of PSII, and not with other PSII proteins or functions examined. In vivo cross-linking experiments indicated that a greater amount of sHsp associated with PSII proteins during heat stress in the tolerant genotype. PSII was the most thermosensitive component of photosynthetic electron transport, and no differences between genotypes in the thermotolerance of other electron transport components were observed. These results indicate that in vivo chloroplast sHsps can protect O2 evolution and the OEC proteins of PSII during heat stress.

scholarly journals Characterization of mutations in small heat shock proteins that influence substrate binding

2013 ◽  
Vol 27 (S1) ◽  
Author(s):  
Kathryn McMenimen ◽  
Courtney Caminiti ◽  
Pei Liu ◽  
Aichurok Kamalova ◽  
Caroline Weber
Keyword(s):  
Heat Shock ◽  
Heat Shock Proteins ◽  
Substrate Binding ◽  
Small Heat Shock Proteins ◽  
Shock Proteins

Expression of selected heat shock proteins after individually applied and combined drought and heat stress

2011 ◽  
Vol 33 (5) ◽  
pp. 2041-2049 ◽  
Author(s):  
Biliana Grigorova ◽  
Irina I. Vaseva ◽  
Klimentina Demirevska ◽  
Urs Feller
Keyword(s):  
Heat Stress ◽  
Heat Shock ◽  
Heat Shock Proteins ◽  
Shock Proteins ◽  
Drought And Heat Stress
Sign in / Sign up

Export Citation Format

Share Document