Department of Botany, University of Kansas, 66045, Lawrence, Kansas, USA.
Photosynth Res. 1987 Jan;11(3):237-44. doi: 10.1007/BF00055063.
After 23 days without water in a greenhouse, rates of nocturnal CO2 uptake in Tillandsia schiedeana decreased substantially and maximum rates occurred later in the dark period eventually coinciding with the onset of illumination. Nocturnal CO2 uptake accounted for less than half the total nighttime increase in acidity measured in well-watered plants. With increased tissue desiccation, only 11-12% of measured acid accumulation was attributable to atmospheric CO2 uptake. Plants desiccated for 30 days regained initial levels of nocturnal acid accumulation and CO2 uptake after rehydration for 10h. These results stress the importance of CO2 recycling via CAM in this epiphytic bromeliad, especially during droughts.
在温室中 23 天没有水之后，翠云草的夜间 CO2 吸收速率大幅下降，最大速率出现在黑暗期的后期，最终与光照开始时间重合。夜间 CO2 吸收量不到充分浇水植物夜间酸度总增加值的一半。随着组织干燥度的增加，只有 11-12%的已测酸积累归因于大气 CO2 的吸收。经过 30 天的干燥处理后，在重新浇水 10 小时后，植物恢复了初始水平的夜间酸积累和 CO2 吸收。这些结果强调了 CAM 在这种附生凤梨科植物中的 CO2 再循环的重要性，特别是在干旱期间。
