Effects of Fully Open-Air [CO2] Elevation on Leaf Photosynthesis and Ultrastructure of Isatis indigotica Fort

文献类型： 外文期刊

第一作者： Hao, Xingyu

作者： Hao, Xingyu;Li, Ping;Gao, Ji;Han, Yuanhuai;Hao, Xingyu;Feng, Yongxiang;Han, Xue;Gao, Ji;Lin, Erda;Hao, Xingyu;Han, Yuanhuai;Feng, Yongxiang

作者机构：

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2013 年 8 卷 9 期

页码：

收录情况： SCI

摘要： Traditional Chinese medicine relies heavily on herbs, yet there is no information on how these herb plants would respond to climate change. In order to gain insight into such response, we studied the effect of elevated [CO2] on Isatis indigotica Fort, one of the most popular Chinese herb plants. The changes in leaf photosynthesis, chlorophyll fluorescence, leaf ultrastructure and biomass yield in response to elevated [CO2] (550 +/- 19 mu mol mol(-1)) were determined at the Free-Air Carbon dioxide Enrichment (FACE) experimental facility in North China. Photosynthetic ability of I. indigotica was improved under elevated [CO2]. Elevated [CO2] increased net photosynthetic rate (P-N), water use efficiency (WUE) and maximum rate of electron transport (J(max)) of upper most fully-expended leaves, but not stomatal conductance (g(s)), transpiration ratio (Tr) and maximum velocity of carboxylation (V-c,V-max). Elevated [CO2] significantly increased leaf intrinsic efficiency of PSII (Fv'/Fm') and quantum yield of PSII(Phi PSII), but decreased leaf non-photochemical quenching (NPQ), and did not affect leaf proportion of open PSII reaction centers (qP) and maximum quantum efficiency of PSII (Fv/Fm). The structural chloroplast membrane, grana layer and stroma thylakoid membranes were intact under elevated [CO2], though more starch grains were accumulated within the chloroplasts than that of under ambient [CO2]. While the yield of I. indigotica was higher due to the improved photosynthesis under elevated [CO2], the content of adenosine, one of the functional ingredients in indigowoad root was not affected.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序