Ecophysiology matters: linking inorganic carbon acquisition to ecological preference in four species of microalgae (Chlorophyceae)
Ecophysiology matters: linking inorganic carbon acquisition to ecological preference in four species of microalgae (Chlorophyceae)
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生态生理学很重要：将无机碳获取与四种微藻（绿藻）的生态偏好联系起来
DOI：
10.1111/jpy.12462
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发表时间：
2016
影响因子：
2.9
通讯作者：
E. Spijkerman
中科院分区：
文献类型：
--
作者：
Lachmann;S.C. Maberly ;E. Spijkerman
CO2供应的影响可能在藻类生态学中发挥重要作用。由于无机碳（Ci）的收购策略是非常不同的微藻和Ciavailability内和栖息地之间的差异很大，我们假设，Ciacquisition取决于pH值的首选自然环境（适应）和Ciuptake的效率是受CO2的可用性（驯化）。为了验证这一点，四种绿色藻类起源于不同的栖息地进行了研究。采用pH漂移和Ci摄取动力学实验来表征Ci获取策略，并评估其适应高和低CO2条件以及高和低pH的能力。pH漂移实验的结果表明，嗜酸和耐酸衣原体物种主要局限于CO2，而两种中性粒细胞是高效的碳酸氢盐使用者。低CO2驯化培养物中的CO2补偿点在0.6和1.4 μM CO2之间，对不同培养物pH和CO2条件的驯化表明大多数物种存在CO2浓缩机制。高CO2驯化培养物在pH漂移期间迅速适应低CO2条件。不同pH值下的Cipool吸收动力学表明，Cipool对Cipool的亲和力受外界pH的影响较大，在CO2占主导地位的条件下，Cipool对Cipool的亲和力最高。综上所述，四种绿色藻类的C_（iacquisition）具有高度的变异性，并与生长pH偏好有关，表明C_（iacquisition）与生态分布之间存在联系。
The effect of CO2supply is likely to play an important role in algal ecology. Since inorganic carbon (Ci) acquisition strategies are very diverse among microalgae and Ciavailability varies greatly within and among habitats, we hypothesized that Ciacquisition depends on the pH of their preferred natural environment (adaptation) and that the efficiency of Ciuptake is affected by CO2availability (acclimation). To test this, four species of green algae originating from different habitats were studied. The pH‐drift and Ciuptake kinetic experiments were used to characterize Ciacquisition strategies and their ability to acclimate tohighandlow CO2conditions andhighand lowpHwas evaluated. Results from pH drift experiments revealed that the acidophile and acidotolerantChlamydomonasspecies were mainly restricted to CO2, whereas the two neutrophiles were efficient bicarbonate users. CO2compensation points inlow CO2‐acclimated cultures ranged between 0.6 and 1.4 μM CO2and acclimation to different culture pH and CO2conditions suggested that CO2concentrating mechanisms were present in most species. High CO2acclimated cultures adapted rapidly to low CO2condition during pH‐drifts. Ciuptake kinetics at different pH values showed that the affinity for Ciwas largely influenced by external pH, being highest under conditions where CO2dominated the Cipool. In conclusion, Ciacquisition was highly variable among four species of green algae and linked to growth pH preference, suggesting that there is a connection between Ciacquisition and ecological distribution.
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DOI：
10.3769/radioisotopes.50.12_601
发表时间：
2001
期刊：
Radioisotopes
影响因子：
--
作者：
秀幸 土居;永祐 菊地;秀一 鹿野
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通讯作者：
C. Reynolds
影响因子：
1.6
作者：
M. Díaz;S. Maberly
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影响因子：
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影响因子：
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