Photosynthetic characteristics of hybrid rice with phospho<Emphasis Type="Italic">enol</Emphasis>pyruvate carboxylase gene |
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Authors: | L Ling B J Zhang D M Jiao |
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Institution: | (1) College of Life Science, Sichuan University, Chengdu, 610064, China;(2) Department of Life Science, Xiaozhuang College, Nanjing, 210017, China;(3) 84-401, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China |
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Abstract: | High level of phosphoenolpyruvate carboxylase (PEPC) gene was stably inherited and transferred from the male parent, PEPC
transgenic rice, into a female parent, japonica rice cv. 9516. Relative to the female parent, the produced JAAS45 pollen lines exhibited high PEPC activity (17-fold increase)
and also higher photosynthetic rates (about 36 %-fold increase). The JAAS45 pollen lines were more tolerant to photoinhibition
and to photo-oxidative stress. Furthermore, JAAS45 pollen lines, as well as their male parent, were tested to exhibit a limiting
C4 cycle by feeding with exogenous C4 primary products such as oxaloacetate (OAA). Thus the PEPC gene and photosynthetic characteristics of PEPC transgenic rice
could be stably transferred to the hybrid progenies, which might open a new breeding approach to the integration of conventional
hybridization and biological technology.
An erratum to this article is available at . |
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Keywords: | anther culture C4 cycle chlorophyll fluorescence induction net photosynthetic rate Oryza oxaloacetate photosystem 2 transgenic plants Zea |
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