Species-specific influence of Pi-status on inorganic carbon acquisition in microalgae (Chlorophyceae)
Species-specific influence of Pi-status on inorganic carbon acquisition in microalgae (Chlorophyceae)
复制标题
Pi 状态对微藻(绿藻)无机碳获取的物种特异性影响
DOI:
10.1139/cjb-2017-0082
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发表时间:
2017
期刊:
影响因子:
1.1
通讯作者:
E. Spijkerman
中科院分区:
文献类型:
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作者:
Lachmann;S.C. Maberly ;E. Spijkerman
Inorganic phosphorus (Pi) is often the primary limiting nutrient in freshwater ecosystems. Since Pi-limitation affects energy transduction, and inorganic carbon (Ci) acquisition can be energy demanding, Ci-acquisition strategies were compared in four species of green algae grown under Pi-replete and Pi-limited conditions predominantly at low and partly at high CO2. Although Pi-limitation was evident by the 10-fold higher cellular C:P ratio and enhanced phosphatase activity, it only decreased Ci-acquisition to a small extent. Nonetheless, the effects of Pi-limitation on both CO2andacquisition were demonstrated. Decreased CO2acquisition under conditions of Pilimitation was mainly visible in the maximum uptake rate (Vmax) and, for the neutrophileScenedesmus vacuolatus, in the affinity for CO2acquisition. Discrimination against13C was higher under Pi-limited, high CO2conditions, compared with Pi-replete, high CO2conditions, inChlamydomonasacidophilaandS.vacuolatus. In the pH-drift experiments,acquisition was reduced in Pi-limitedC.reinhardtii. In general, energy demanding bicarbonate uptake was indicated by the less strong discrimination against13C under low CO2conditions in the neutrophiles (users), separating them from the acidophilic or acidotolerant species (CO2users). The high variability of the influence of Pisupply among different green algal species is linked to their species-specific Ci-acquisition strategies.
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影响因子:
3.7
作者:
Spijkerman E;de Castro F;Gaedke U
通讯作者:
Gaedke U
影响因子:
2.9
作者:
Lachmann;S.C. Maberly ;E. Spijkerman
通讯作者:
E. Spijkerman
影响因子:
2.4
作者:
Spijkerman;S. Stojkovic;D. Holland;S.C. Lachmann ;J. Beardall
通讯作者:
J. Beardall
影响因子:
7.4
作者:
B. Shelp;D. T. Canvin
通讯作者:
D. T. Canvin
DOI:
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发表时间:
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期刊:
影响因子:
--
作者:
通讯作者:
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