Phosphoenolpyruvate carboxylase activity,fixation of14C in amino acids and nitrogen transport in stem nodules ofSesbania rostrata |
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| Authors: | S. Sadasivam P. M. Lakshmi S. Kannaiyan |
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| Affiliation: | 1. Department of Biochemistry, Tamil Nadu Agricultural University, 641 003, Coimbatore, India
2. Department of Agricultural Microbiology, Tamil Nadu Agricultural University, 641003, Coimbatore, India
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| Abstract: | Thein vivo 14CO2 fixation assay and xylem sap analysis showed that inSesbania rostrata the transport of fixed nitrogen from stem nodules was in the amide form. The majority of nitrogen was transported as asparagine. The close relationship between nodule phosphoenolpyruvate carboxylase and nitrogenase activities suggested that nodule CO2 fixation contributed directly to nitrogen assimilation in stem nodules ofS. rostrata. |
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