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Nitrate reduction in ramets of a clonal plant Eichhornia crassipes responding to nitrate availability during clonal growth stage |
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| Authors: | W G Li J L Wang J J Shen and J B Wang |
| Institution: | (1) Key Laboratory of the MOE for Plant Development Biology, College of Life Sciences, Wuhan University, Wuhan, 430072, P.R. China;(2) Institute of Resource and Environment, Henan Polytechnic University, Jiaozuo, 454003, P.R. China;(3) Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing, 100084, P.R. China |
| Abstract: | Effect of nitrate availability on nitrate reduction was examined in inter-connected ramets of invasive clonal plant Eichhornia crassipes grown with two nitrate supply regimes during different clonal growth stage. Increase of nitrate availability accelerated nitrate reductase activity (NRA) in parent and offspring ramets of E. crassipes, and there was greatly different pattern in inter-connected ramets during clonal growth stage. Leaf NRA was lower in offspring than that in parent ramets in phase 1, while significantly higher leaf NRA in offspring ramets was detected during phase 2. The results indicated NRA in inter-connected ramets of E. crassipes was highly dependent on nitrate availability and growth stage. |
| Keywords: | Additional" target="_blank">Additional inter-connected ramets nitrate reductase activity relative growth rate |
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