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首页> 外文期刊>American Journal of Plant Sciences >CO2 and Chamber Effects on Epidermal Development in Field-Grown Peanut (Arachis hypogaea L.)
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CO2 and Chamber Effects on Epidermal Development in Field-Grown Peanut (Arachis hypogaea L.)

机译：田间种植的花生（花生）的CO2和腔室效应对表皮发育的影响

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摘要

Peanut, (Arachis hypogaea L.) cvar. C76-16, was grown either in the field, or in open gas exchange chambers under elevated or ambient CO2 concentrations. Stomatal density and other selected epidermal parameters associated with leaf development and gas exchange were measured on recently fully expanded canopy leaves. It was hypothesized that exclusion of solar UV by chambers would affect stomatal density, but no clear statistically significant chamber effect on stomatal density was found. However, elevated [CO2] did lead to a reduction in both adaxial and abaxial stomatal developmental initiation and in stomatal density. Since each stomate was bounded by companion cells resulting from developmental events, non-random stomatal spacing as the “one cell spacing rule” appears to result from ontogeny rather than a long hypothesized chemical signal inhibiting adjacent meristemoid differentiation into guard cells. A method of visualizing epidermal patterns is also described.
机译：花生（Arachis hypogaea L.） C76-16既可以在野外，也可以在升高的或周围的CO2浓度下在开放的气体交换室内生长。在最近完全展开的冠层叶片上测量了与叶片发育和气体交换相关的气孔密度和其他选定的表皮参数。据推测，隔室排除太阳紫外线会影响气孔密度，但没有发现统计上明显的隔室对气孔密度的影响。但是，升高的[CO2]确实导致了气孔发育前后轴和气孔密度的降低。由于每个气孔都受到发育事件导致的陪伴细胞的限制，因此非随机的气孔间隔作为“一个细胞间隔规则”似乎是由个体发育产生的，而不是长期假设的化学信号抑制相邻的分生组织向保卫细胞的分化。还描述了一种可视化表皮图案的方法。

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