Responses of Ottelia alismoides, an aquatic plant with three CCMs, to variable CO2 and light.
Responses of Ottelia alismoides, an aquatic plant with three CCMs, to variable CO2 and light.
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Ottelia alismoides（一种具有三种 CCM 的水生植物）对可变 CO2 和光的响应
DOI：
10.1093/jxb/erx064
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发表时间：
2017-06-01
影响因子：
6.9
通讯作者：
Huang WM
中科院分区：
文献类型：
--
作者：
Shao H;Gontero B;Maberly SC;Jiang HS;Cao Y;Li W;Huang WM
Ottelia alismoides grown at low CO2 operates CAM during the night and C4 metabolism during the day. Night-time accumulation of acid is controlled by CO2. Decarboxylation is controlled by light. Ottelia alismoides is a constitutive C4 plant and bicarbonate user, and has facultative crassulacean acid metabolism (CAM) at low CO2. Acclimation to a factorial combination of light and CO2 showed that the ratio of phosphoenolpyruvate carboxylase (PEPC) to ribulose-bisphosphate carboxylase/oxygenase (Rubisco) (>5) is in the range of that of C4 plants. This and short-term response experiments showed that the activity of PEPC and pyruvate phosphate dikinase (PPDK) was high even at the end of the night, consistent with night-time acid accumulation and daytime carbon fixation. The diel acidity change was maximal at high light and low CO2 at 17–25 µequiv g−1 FW. Decarboxylation proceeded at ~2–3 µequiv g−1 FW h−1, starting at the beginning of the photoperiod, but did not occur at high CO2; the rate was greater at high, compared with low light. There was an inverse relationship between starch formation and acidity loss. Acidity changes account for up to 21% of starch production and stimulate early morning photosynthesis, but night-time accumulation of acid traps <6% of respiratory carbon release. Ottelia alismoides is the only known species to operate CAM and C4 in the same tissue, and one of only two known aquatic species to operate CAM and bicarbonate use.
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影响因子：
7.4
作者：
DELHAIZE, E;RYAN, PR;RANDALL, PJ
通讯作者：
RANDALL, PJ
影响因子：
14.8
作者：
Brain, Richard A.;Solomon, Keith R.
通讯作者：
Solomon, Keith R.
影响因子：
7.4
作者：
KOCH, KE;KENNEDY, RA
通讯作者：
KENNEDY, RA
影响因子：
5.2
作者：
Maberly, SC;Madsen, TV
通讯作者：
Madsen, TV
影响因子：
4.2
作者：
Ceusters, J.;Borland, A. M.;De Proft, M. P.
通讯作者：
De Proft, M. P.