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Plant and Cell Physiology Advance Access originally published online on August 30, 2009
Plant and Cell Physiology 2009 50(10):1851-1855; doi:10.1093/pcp/pcp120
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© The Author 2009. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org

Short Communication

Differences in Expression of the RBCS Multigene Family and Rubisco Protein Content in Various Rice Plant Tissues at Different Growth Stages

Yuji Suzuki*, Kaori Nakabayashi, Ryuichi Yoshizawa, Tadahiko Mae and Amane Makino

Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai, 981-8555 Japan

*Corresponding author: E-mail, ysuzuki{at}biochem.tohoku.ac.jp; Fax, + 81-22-717-8765.


  Abstract

Four out of five members of the RBCS multigene family (OsRBCS2–OsRBCS5) were highly expressed in leaf blades of rice (Oryza sativa L.) irrespective of plant growth stage, whereas accumulation of all RBCS mRNAs in leaf sheaths, roots and developing spikelets was quite low. A highly positive correlation was observed between total RBCS and RBCL mRNA levels and Rubisco content at their maxima, irrespective of tissue and growth stage. The results indicate that the total RBCS mRNA level may be a primary determinant for maximal Rubisco protein content and that Rubisco gene expression is well coordinated through the whole life of rice.

Keywords: Oryza sativa L. - RBCL, - RBCS multigene family - Rubisco

Abbreviations: DAS, days after sowing

(Received July 7, 2009; Accepted August 20, 2009)
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