拟南芥根和叶中与淀粉相关的碳通量。
Starch-related carbon fluxes in roots and leaves of Arabidopsis thaliana.
机构信息
Institute of Biochemistry and Biology, Plant Physiology, University of Potsdam, Potsdam-Golm, Germany.
出版信息
Plant Signal Behav. 2011 Jul;6(7):1060-2. doi: 10.4161/psb.6.7.15629.
Both photoautotrophic and heterotrophic tissues from plants are capable of synthesizing and degrading starch. To analyse starch metabolism in the two types of tissue from the same plant, several starch-related mutants from Arabidopsis thaliana were grown hydroponically together with the respective wild type control. Starch contents, patterns of starch-related enzymes, and the monomer patterns of the cytosolic starch-related heteroglycans were determined. Based on the phenotypical data obtained, three comparisons were made: First, data from leaves and roots of the mutants were compared with the respective wild type controls. Secondly, data from leaves and roots from the same plant were compared. Third, we included data obtained from soil-grown plants and compared them with those from hydroponically grown plants. Thus, phenotypical features reflecting altered gene expression can be distinguished from those that are due to the specific growth conditions. Implications on the carbon fluxes in photoautotrophic and heterotrophic cells are discussed.
植物的光自养组织和异养组织都能够合成和降解淀粉。为了分析同一植物的两种组织中的淀粉代谢，将几种来自拟南芥的与淀粉相关的突变体与相应的野生型对照一起在水培中生长。测定了淀粉含量、与淀粉相关的酶的模式以及细胞质淀粉相关杂多糖的单体模式。基于获得的表型数据，进行了三次比较：首先，将突变体的叶片和根与相应的野生型对照进行比较。其次，将同一植物的叶片和根的数据进行比较。第三，我们包括了从土壤中生长的植物获得的数据，并将其与水培植物的数据进行比较。因此，可以区分反映改变基因表达的表型特征与由于特定生长条件引起的表型特征。讨论了对光自养细胞和异养细胞中碳通量的影响。
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