Stomatal resistance and the ratio of intercellular to ambient carbon dioxide in container-grown yellow-poplar seedlings exposed to chronic ozone fumigation and water stress
Stomatal resistance and the ratio of intercellular to ambient carbon dioxide in container-grown yellow-poplar seedlings exposed to chronic ozone fumigation and water stress
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DOI：
10.1016/0098-8472(94)00053-8
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发表时间：
1995-04
影响因子：
5.7
通讯作者：
W. Cannon;B. Roberts
中科院分区：
文献类型：
--
作者：
W. Cannon;B. Roberts
黄杨(Liriodendron tulipifera L.)1年生容器育苗在连续搅拌槽式反应器中进行0.15ppm臭氧(O3)熏蒸和水分胁迫(两次L周干燥循环)，然后在20天和36天后测量气孔阻力(Rs)、胞间二氧化碳[Ci]和Ci与环境CO2(Ca)的比率。水分胁迫使RSBY增加了250%以上，Ciand CiCaratio减少了20%多一点。0.15ppm的臭氧对番茄叶片的呼吸强度和呼吸强度没有显著影响，但水分胁迫和臭氧熏蒸的交互作用显着增加了叶片的呼吸强度。对于用木炭过滤空气熏蒸的水分胁迫幼苗，CiC和CiCaratio显著低于其他处理。数据表明，低水平臭氧和短期水分胁迫的相互作用可能会对气孔生理产生实质性影响。
One-year old container-grown seedlings of yellow-poplar (Liriodendron tulipifera L.) were exposed to 0.15 ppm ozone (O3) fumigation and water stress (two l-week drying cycles) in continuously stirred tank reactors prior to measuring stomatal resistance (Rs), intercellular carbon dioxide [CO2(Ci)], and the ratio of Ciand ambient CO2(Ca) after 20 and 36 days. Water stress increased Rsby more than 250% and reduced Ciand the CiCaratio by just over 20%. There were no significant effects of 0.15 ppm O3on Ciand the CiCaratio but Rswas significantly increased by the interaction of water stress and O3fumigation. For water-stressed seedlings fumigated with charcoal-filtered air, Ciand the CiCaratio were significantly lower than those of the other treatments. The data show that interactions involving low levels of ozone and short periods of water stress may have a substantial influence on stomatal physiology.