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)
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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
E. Spijkerman
中科院分区:
生物学4区
文献类型:
--
作者:
Lachmann;S.C. Maberly ;E. Spijkerman

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无机磷(Pi)通常是淡水生态系统中的主要限制性营养素。由于Pi限制影响能量转导,无机碳(Ci)收购可以是能源需求,Ci收购策略进行了比较,在四种绿色藻类生长在Pi充满和Pi有限的条件下,主要是在低,部分在高CO2。虽然PI限制是明显的10倍更高的细胞C:P比和增强的磷酸酶活性,它只降低了CI收购到一个小的程度。尽管如此,PI限制对CO2和获取的影响得到了证实。减少CO2收购条件下的Pilimitation主要是可见的最大吸收速率(Vmax),并为nanophileScenedesmus vacuolatus,在亲和力CO2收购。在嗜酸衣原体和空泡链球菌中,对13 C的识别率在Pi有限、高CO2条件下高于Pi充足、高CO2条件下。在pH值漂移实验中,收购减少PI-limitedC. reinhardtii。在一般情况下,能源需求的碳酸氢盐的吸收表明,在低CO2的条件下,在嗜酸菌(用户)对13 C的歧视不太强烈,将他们从嗜酸或耐酸物种(CO2用户)。不同的绿色藻类物种之间的Pisupply的影响的高变异性与它们的物种特异性的Ci-收购策略。
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.
DOI: 10.1371/journal.pone.0028219
发表时间: 2011
期刊: PloS one
影响因子: 3.7
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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
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发表时间: 2016
影响因子: 2.4
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DOI: --
发表时间: 1980
期刊: Plant Physiology
影响因子: 7.4
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通讯作者: D. T. Canvin
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DOI: --
发表时间: --
期刊:
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