Photosynthetica, 2018 (vol. 56), issue 4

Photosynthetica 2018, 56(4):1123-1133 | DOI: 10.1007/s11099-018-0808-6

Comparative chloroplast proteome analysis of exogenously supplied trehalose to wheat seedlings under heat stress

Y. Luo1,*, H. Y. Liu1, Y. Z. Fan1, W. Wang1, Y. Y. Zhao1
1 Instruments Sharing Platform of School of Life Sciences, East China Normal University, Shanghai, China

The aim of our study was to investigate the underlying molecular mechanisms of exogenously supplied trehalose affecting wheat photosynthesis under heat stress. The amount of ATP synthase (ATPase), oxygen-evolving enhancer protein (OEE), PsbP, Rubisco, chloroplast fructose-bisphosphate aldolase (FBPA), and ferredoxin-NADP(H) oxidoreductase (FNR) were downregulated, while PSI reaction center subunits were upregulated under heat stress. However, in the trehalose-pretreated groups, the amount of FNR, cytochrome b6f complex, PSI reaction center subunits, ATPase, FBPA, and Rubisco were upregulated under normal growth conditions and heat stress. Besides, during the recovery period, the upregulation in CAB, PsbP, OEE2, and ATPase suggested that trehalose pretreatment might help to the recovery of PSII and PSI. These results indicate that trehalose pretreatment effectively regulates the levels of the photosynthesis-related proteins and relieves the damage of heat stress to wheat chloroplast.

Keywords: chlorophyll fluorescence; chloroplast; photosynthesis-related proteome; PSI activity

Received: January 31, 2017; Accepted: July 28, 2017; Prepublished online: December 1, 2018; Published: November 1, 2018Show citation

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Luo, Y., Liu, H.Y., Fan, Y.Z., Wang, W., & Zhao, Y.Y. (2018). Comparative chloroplast proteome analysis of exogenously supplied trehalose to wheat seedlings under heat stress. Photosynthetica, 56(4), 1123-1133. doi: 10.1007/s11099-018-0808-6.
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