Poole I, Lawson T, Weyers J D B, Raven J A
1 Department of Biological Sciences, University of Dundee, Dundee DD1 4HN, UK.
New Phytol. 2000 Mar;145(3):511-521. doi: 10.1046/j.1469-8137.2000.00589.x.
Variation in stomatal development and physiology of mature leaves from Alnus glutinosa plants grown under reference (current ambient, 360 μmol mol CO ) and double ambient (720 μmol mol CO ) carbon dioxide (CO ) mole fractions is assessed in terms of relative plant growth, stomatal characters (i.e. stomatal index and density) and leaf photosynthetic characters. This is the first study to consider the effects of elevated CO concentration on the distribution of stomata and epidermal cells across the whole leaf and to try to ascertain the cause of intraleaf variation. In general, a doubling of the atmospheric CO concentration enhanced plant growth and significantly increased stomatal index. However, there was no significant change in relative stomatal density. Under elevated CO concentration there was a significant decrease in stomatal conductance and an increase in assimilation rate. However, no significant differences were found for the maximum rate of carboxylation (V ) and the light saturated rate of electron transport (J ) between the control and elevated CO treatment.
在参考（当前环境，360 μmol/mol CO₂）和两倍环境（720 μmol/mol CO₂）二氧化碳（CO₂）摩尔分数条件下生长的欧洲桤木植株成熟叶片的气孔发育和生理变化，从相对植株生长、气孔特征（即气孔指数和密度）以及叶片光合特征方面进行了评估。这是第一项考虑高浓度CO₂对全叶气孔和表皮细胞分布的影响并试图确定叶内变异原因的研究。总体而言，大气CO₂浓度加倍促进了植株生长并显著提高了气孔指数。然而，相对气孔密度没有显著变化。在高浓度CO₂条件下，气孔导度显著降低，同化率增加。然而，对照和高浓度CO₂处理之间，羧化最大速率（Vₑ）和光饱和电子传递速率（Jₑ）没有发现显著差异。
