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Relationship between rubisco turnover of flag leaf and nitrogen content of grains in wheat

Gao Ling, Jiang Li, Zhang Rongxian

Department of Agronomy,Nanjing Agricultural University.Nanjing 210095,Jiangsu

Abstract

All these indicated that new synthesis of Rubisco was trivial. Additionally, ~(15)N abundance of grains was enhanced. ~(15)N enrichment of Rubisco was higher than that of total protein, which indicated that the rate of Rubisco resynthesis was faster than other proteins. Net nitrogen and ~(15)N abundance cyclization of Rubisco were higher than that of total nitrogen. This indicated that there more nitrogen from Rubisco than from other proteins was transported to grains, and so that the contribution of Rubisco nitrogen to grain protein was larger than other proteins.

Key words: Wheat flag leaf;RubisCO;Turnover;Grain;Nitrogen content

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Citing This Article：

Gao Ling, Jiang Li, Zhang Rongxian. Relationship between rubisco turnover of flag leaf and nitrogen content of grains in wheat. Acta Physiol Sin 2001; 53 (2): (in Chinese with English abstract).