Carbon-concentrating mechanisms in acidophilic algae

Phycologia ◽  
2009 ◽  
Vol 48 (2) ◽  
pp. 77-85 ◽  
Author(s):  
Mónica M. Diaz ◽  
Stephen C. Maberly
Keyword(s):  
Carbon Concentrating Mechanisms ◽  
Acidophilic Algae

scholarly journals Acidophilic green algal genome provides insights into adaptation to an acidic environment

2017 ◽  
Vol 114 (39) ◽  
pp. E8304-E8313 ◽  
Author(s):  
Shunsuke Hirooka ◽  
Yuu Hirose ◽  
Yu Kanesaki ◽  
Sumio Higuchi ◽  
Takayuki Fujiwara ◽  
...  
Keyword(s):  
Plasma Membrane ◽  
Draft Genome ◽  
Acidic Environment ◽  
Green Algal ◽  
Genes Encoding ◽  
Acidic Environments ◽  
Arsenic Detoxification ◽  
Shock Proteins ◽  
Acidophilic Algae ◽  
Algal Genome

Some microalgae are adapted to extremely acidic environments in which toxic metals are present at high levels. However, little is known about how acidophilic algae evolved from their respective neutrophilic ancestors by adapting to particular acidic environments. To gain insights into this issue, we determined the draft genome sequence of the acidophilic green alga Chlamydomonas eustigma and performed comparative genome and transcriptome analyses between C. eustigma and its neutrophilic relative Chlamydomonas reinhardtii. The results revealed the following features in C. eustigma that probably contributed to the adaptation to an acidic environment. Genes encoding heat-shock proteins and plasma membrane H+-ATPase are highly expressed in C. eustigma. This species has also lost fermentation pathways that acidify the cytosol and has acquired an energy shuttle and buffering system and arsenic detoxification genes through horizontal gene transfer. Moreover, the arsenic detoxification genes have been multiplied in the genome. These features have also been found in other acidophilic green and red algae, suggesting the existence of common mechanisms in the adaptation to acidic environments.

Intraspecies evolution of enzymic mechanisms associated with the synthesis of α-1,4 storage glucans in two thermophilic-acidophilic algae of Cyanidium type

1983 ◽  
Vol 22 (5) ◽  
pp. 1155-1157 ◽  
Author(s):  
Jerome F. Fredrick ◽  
Joseph Seckbach
Keyword(s):  
Acidophilic Algae

scholarly journals Acidophilic algae isolated from mine-impacted environments and their roles in sustaining heterotrophic acidophiles

2012 ◽  
Vol 3 ◽  
Author(s):  
Ivan Ňancucheo ◽  
D. Barrie Johnson
Keyword(s):  
Acidophilic Algae

Did early land plants use carbon-concentrating mechanisms?

2013 ◽  
Vol 18 (3) ◽  
pp. 120-124 ◽  
Author(s):  
Sharon A. Cowling
Keyword(s):  
Land Plants ◽  
Carbon Concentrating Mechanisms ◽  
Early Land

scholarly journals Crassulacean acid metabolism in the context of other carbon-concentrating mechanisms in freshwater plants: a review

2011 ◽  
Vol 109 (1-3) ◽  
pp. 269-279 ◽  
Author(s):  
Signe Koch Klavsen ◽  
Tom V. Madsen ◽  
Stephen C. Maberly
Keyword(s):  
Crassulacean Acid Metabolism ◽  
Acid Metabolism ◽  
Carbon Concentrating Mechanisms ◽  
Freshwater Plants

Revision of Cyanidium caldarium. Three species of acidophilic algae

1981 ◽  
Vol 115 (4-5) ◽  
pp. 189-195 ◽  
Author(s):  
Aldo Merola ◽  
Rosa Castaldo ◽  
Paolo De Luca ◽  
Raffaele Gambardella ◽  
Aldo Musacchio ◽  
...  
Keyword(s):  
Cyanidium Caldarium ◽  
Acidophilic Algae

scholarly journals Predicting Effects of Ocean Acidification and Warming on Algae Lacking Carbon Concentrating Mechanisms

PLoS ONE ◽  
2015 ◽  
Vol 10 (7) ◽  
pp. e0132806 ◽  
Author(s):  
Janet E. Kübler ◽  
Steven R. Dudgeon
Keyword(s):  
Ocean Acidification ◽  
Carbon Concentrating Mechanisms

scholarly journals Latitudinal trends in stable isotope signatures and carbon concentrating mechanisms of northeast Atlantic rhodoliths

2017 ◽  
Author(s):  
Laurie C. Hofmann ◽  
Svenja Heesch
Keyword(s):  
Stable Isotope ◽  
Red Algae ◽  
Free Living ◽  
Shallow Marine ◽  
Northeast Atlantic ◽  
Stable Isotope Signatures ◽  
Carbon Concentrating Mechanisms

Abstract. Rhodoliths are free-living calcifying red algae that form extensive beds in shallow marine benthic environments (

scholarly journals Breakdown of the coral-algae symbiosis: towards formalising a linkage between warm-water bleaching thresholds and the growth rate of the intracellular zooxanthellae

2012 ◽  
Vol 9 (7) ◽  
pp. 8111-8139 ◽  
Author(s):  
S. A. Wooldridge
Keyword(s):  
Thermal Damage ◽  
Coral Host ◽  
Crucial Importance ◽  
Thermal Bleaching ◽  
Photosynthetic Carbon ◽  
Carbon Concentrating Mechanisms ◽  
Algal Endosymbiont ◽  
Photosynthetic Machinery ◽  
Characteristic Growth ◽  
Rapid Environmental Change

Abstract. Impairment of the photosynthetic machinery of the algal endosymbiont ("zooxanthellae") is the proximal trigger for the thermal breakdown of the coral-algae symbiosis ("coral bleaching"). Yet, the primary site of thermal damage is not well resolved. In this perspective essay, I consider further a recent hypothesis which proposes an energetic disruption to the carbon-concentrating mechanisms (CCMs) of the coral host, and the resultant onset of CO2-limitation within the photosynthetic "dark reactions", as a unifying cellular mechanism. The hypothesis identifies the enhanced retention of photosynthetic carbon for zooxanthellae (re)growth following an initial irradiance-driven expulsion event as the cause of the energetic disruption. If true, then it implies that the onset of the bleaching syndrome and setting of upper thermal bleaching limits are emergent attributes of the coral symbiosis that are ultimately underpinned by the characteristic growth profile of the intracellular zooxanthellae; which is known to depend not just on temperature, but also external (seawater) nutrient availability and zooxanthellae genotype. Here, I review this proposed bleaching linkage at a variety of observational scales, and find it to be parsimonious with the available evidence. This provides a new standpoint to consider the future prospects of the coral symbiosis in an era of rapid environmental change, including the now crucial importance of reef water quality in co-determining thermal bleaching resistance.

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