No detectable maternal effects of elevated CO(2) on Arabidopsis thaliana over 15 generations.
No detectable maternal effects of elevated CO(2) on Arabidopsis thaliana over 15 generations.
复制标题
高浓度二氧化碳对拟南芥 15 代未检测到母体影响
DOI：
10.1371/journal.pone.0006035
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发表时间：
2009-06-25
期刊：
影响因子：
3.7
通讯作者：
Lin J
中科院分区：
文献类型：
--
作者：
Teng N;Jin B;Wang Q;Hao H;Ceulemans R;Kuang T;Lin J
母体环境对后代的生长发育有重要影响。然而，很少有研究已经进行了调查多代母体效应的CO2浓度升高对植物生长和发育。在这里，我们提出了第一份报告，植物生殖，光合作用和细胞特性的反应，以高浓度CO2超过15代拟南芥作为模型系统。我们发现，在一个单独的世代，CO2浓度升高显着先进的植物开花，增加光合速率，增加每个叶绿体的淀粉粒的大小和数量，减少气孔密度，气孔导度，蒸腾速率，并导致更高的生殖质量。CO2浓度升高并没有显着影响角果长度和种子数。然而，在CO2浓度升高的15代中，这些性状没有显着差异。此外，一个相互播种实验表明，CO2浓度升高并没有产生可检测到的母亲对后代的影响后，15代。综上所述，这些结果表明，母亲的影响，CO2浓度升高未能扩展到后代由于潜在的缺乏CO2响应的遗传变异，未来的植物可能不会进化出特定的适应CO2浓度升高。
Maternal environment has been demonstrated to produce considerable impact on offspring growth. However, few studies have been carried out to investigate multi-generational maternal effects of elevated CO2 on plant growth and development. Here we present the first report on the responses of plant reproductive, photosynthetic, and cellular characteristics to elevated CO2 over 15 generations using Arabidopsis thaliana as a model system. We found that within an individual generation, elevated CO2 significantly advanced plant flowering, increased photosynthetic rate, increased the size and number of starch grains per chloroplast, reduced stomatal density, stomatal conductance, and transpiration rate, and resulted in a higher reproductive mass. Elevated CO2 did not significantly influence silique length and number of seeds per silique. Across 15 generations grown at elevated CO2 concentrations, however, there were no significant differences in these traits. In addition, a reciprocal sowing experiment demonstrated that elevated CO2 did not produce detectable maternal effects on the offspring after fifteen generations. Taken together, these results suggested that the maternal effects of elevated CO2 failed to extend to the offspring due to the potential lack of genetic variation for CO2 responsiveness, and future plants may not evolve specific adaptations to elevated CO2 concentrations.
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