%0 Journal Article
%T The expression profile of genes in rice roots under low phosphorus stress<br>
%A LiHua Li
%A XuHua Qiu
%A XiangHua Li
%A ShiPing Wang
%A XingMing Lian
%A <br>
%J 中国科学C辑(英文版)
%D 2009
%I Springer
%X Phosphorus (P) is one of the most essential macronutrients required for plant growth. Although it is abundant in soil, P is often the limiting nutrient for crop yield potential because of the low concentration of soluble P that plants can absorb directly. The gene expression profile was investigated in rice roots at 6, 24 and 72 h under low P stress and compared with a control (normal P) profile, using a DNA chip of 60000 oligos (70 mer) that represented all putative genes of the rice genome. A total of 795 differentially expressed genes were identified in response to phosphate (Pi) starvation in at least one of the treatments. Based on the analysis, we found that: (i) The genes coding for the Pi transporter, acid phosphatase and RNase were up-regulated in rice roots; (ii) the genes involved in glycolysis were first up-regulated and then down-regulated; (iii) several genes involved in N metabolism and lipid metabolism changed their expression patterns; (iv) some genes involved in cell senescence and DNA or protein degradation were up-regulated; and (v) some transmembrane transporter genes were up-regulated. The results may provide useful information in the molecular process associated with Pi deficiency and thus facilitate research in improving Pi utilization in crop species.
%K phosphorus
%K rice
%K DNA chip expression profile<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=180CF3A72E750F3261A8A60EDC957784&aid=71CF947079280902147172B436CB360E&yid=DE12191FBD62783C&vid=286FB2D22CF8D013&iid=708DD6B15D2464E8&sid=309A221A57FE8496&eid=941A3E905B9F2AD9&journal_id=1674-7305&journal_name=ScienceChina.Lifesciences&referenced_num=0&reference_num=44