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Effect of Chlorophyll-deficient on PSⅡ and Distribution Properties of Absorbed Light Energy in Leaves of Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2009年04期
Page:
605-610
Research Field:
Publishing date:

Info

Title:
Effect of Chlorophyll-deficient on PSⅡ and Distribution Properties of Absorbed Light Energy in Leaves of Soybean
Author(s):
GUO Jing-jingGONG Li-liHAN TaoZHANG XueXU Xiao-ming
College of Life Sciences,Nanjing Agricultural University,Nanjing 210095,Jiangsu,China
Keywords:
SoybeanChlorophyll-deficientMutantPSⅡ reaction centersDistribution of light energy
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2009.04.0605
Abstract:
The chlorophyll contents,gas exchange and chlorophyll fluorescence kinetics were extensively studied in chlorophyll-deficient mutant soybean leaves and its wild-type from emergency to full expansion under field conditions.The difference of the absorbed light distribution between two soybean varieties during the development of leaves was also assessed.Results showed that chlorophyll deficient induced a decrease of PSⅡ reaction centers,and resulted in an increase of excited energy capture per active reaction centers.It also showed that PSⅡ electron transport was blocked apparently,and the energy dissipation increased per PSⅡ reaction centers.Compared with wild-type soybean,the mutant had less excitation energy and the fraction of absorbed light allocated to energy dissipation.Furthermore,with the deficiency of the chlorophyll content allocation of photosynthetic electron transport to photorespiration was enhanced.

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Last Update: 2014-09-21