scholarly journals Rubisco and carbon‐concentrating mechanism co‐evolution across chlorophyte and streptophyte green algae

2020 ◽  
Vol 227 (3) ◽  
pp. 810-823 ◽  
Author(s):  
Myriam M. M. Goudet ◽  
Douglas J. Orr ◽  
Michael Melkonian ◽  
Karin H. Müller ◽  
Moritz T. Meyer ◽  
...  
Keyword(s):  
Green Algae ◽  
Carbon Concentrating Mechanism ◽  
Concentrating Mechanism

Regulation of a carbon concentrating mechanism through CCM1 in Chlamydomonas reinhardtii

2002 ◽  
Vol 29 (3) ◽  
pp. 211 ◽  
Author(s):  
Kenji Miura ◽  
Tsutomu Kohinata ◽  
Satoshi Yoshioka ◽  
Kanji Ohyama ◽  
Hideya Fukuzawa
Keyword(s):  
Chlamydomonas Reinhardtii ◽  
Green Algae ◽  
Green Alga ◽  
Regulatory Gene ◽  
Current Understanding ◽  
Carbon Concentrating Mechanism ◽  
Signalling System ◽  
Photosynthetic Organisms ◽  
Concentrating Mechanism ◽  
Expression Of Genes

Aquatic photosynthetic organisms, including the green alga, Chlamydomonas reinhardtii, induce a set of genes for a carbon concentrating mechanism (CCM) through the CO2-signalling system, to acclimate to CO2-limiting stress conditions. We have described a regulatory gene, Ccm1, which was shown to regulate CCM induction in C. reinhardtii. In this review, we summarize the current understanding of the regulatory process, which controls the expression of genes for the CCM. In particular, CCM1-regulated genes and possible functions of Ccm1 in the CO2-signalling pathway are discussed, in relation to findings in other green algae and cyanobacteria.

Modulation of photosynthesis and inorganic carbon acquisition in a marine microalga by nitrogen, iron, and light availability

2005 ◽  
Vol 83 (7) ◽  
pp. 917-928 ◽  
Author(s):  
Erica B Young ◽  
John Beardall
Keyword(s):  
Inorganic Carbon ◽  
Dunaliella Tertiolecta ◽  
Initial Slope ◽  
Carbon Concentrating Mechanism ◽  
High Affinity ◽  
N Limitation ◽  
Marine Microalga ◽  
Concentrating Mechanism ◽  
Energy Limitation ◽  
Use Efficiency

The marine microalga Dunaliella tertiolecta Butcher expresses a high affinity for dissolved inorganic carbon (DIC) through a carbon-concentrating mechanism (CCM), known to be influenced by CO2 availability and instantaneous light supply. However, the regulation by light and nutrient supply during growth is less understood, although N and Fe limitation impose an energy limitation by compromising the photosynthetic apparatus. Dunaliella tertiolecta was grown under steady-state conditions of limited light, N, and Fe availability, and the affinity for DIC was measured under saturating light. High affinity DIC uptake capacity was maintained by D. tertiolecta under all growth-limiting conditions, but was modulated in response to the limiting resource. Affinity of photosynthesis for DIC(k0.5) was significantly reduced in cells grown under low light, both in turbidostats and in batch culture (p ≤ 0.03), although cell-normalized Pmax was not significantly affected. In contrast, N and Fe limitation resulted in a significant reduction in cell chlorophyll, Pmax, and maximum photosystem II quantum yield (Fv/Fm), but the affinity for DIC was enhanced with increasing N or Fe stress. While the affinity for DIC improved with increasing N stress (k0.5 < 17.8 µM at µ = 0.27 d–1 versus k0.5 > 26 µM at µ ≥ 0.77 d–1), light use efficiency (α) was impaired under N limitation, suggesting a trade-off between light harvesting capacity and active DIC uptake. Stable C isotope analysis of Fe-limited cells confirmed a lower fractionation by the most Fe-limited cells, consistent with the k0.5 data and more active DIC acquisition (δ13C = –19.56 at µ = 0.27 d–1 cf. δ13C = –26.28 at µ = 0.77 d–1). Assessment of affinity for DIC using k0.5 was supported by the close fit of P versus DIC curves to Michaelis–Menten kinetics; with the high DIC affinity of D. tertiolecta, there was poor resolution in the initial slope of the P versus DIC curve as a parameter of affinity for DIC. Enhanced DIC uptake efficiency under Fe and N limitation may relate to improved resource-use efficiency conferred by CCM activity.Key words: algae, carbon-concentrating mechanism, iron, light, nitrogen, nutrient limitation, photosynthesis.

scholarly journals Identification of Two Genes, sll0804 and slr1306, as Putative Components of the CO2-Concentrating Mechanism in the Cyanobacterium Synechocystis sp. Strain PCC 6803

2008 ◽  
Vol 190 (24) ◽  
pp. 8234-8237 ◽  
Author(s):  
Shulu Zhang ◽  
Kevin W. Spann ◽  
Laurie K. Frankel ◽  
James V. Moroney ◽  
Terry M. Bricker
Keyword(s):  
Inorganic Carbon ◽  
Carbon Concentrating Mechanism ◽  
Co2 Concentrating Mechanism ◽  
Concentrating Mechanism ◽  
Synechocystis Sp ◽  
Pcc 6803

ABSTRACT Insertional transposon mutations in the sll0804 and slr1306 genes were found to lead to a loss of optimal photoautotrophy in the cyanobacterium Synechocystis sp. strain PCC 6803 grown under ambient CO2 concentrations (350 ppm). Mutants containing these insertions (4BA2 and 3ZA12, respectively) could grow photoheterotrophically on glucose or photoautotrophically at elevated CO2 concentrations (50,000 ppm). Both of these mutants exhibited an impaired affinity for inorganic carbon. Consequently, the Sll0804 and Slr1306 proteins appear to be putative components of the carbon-concentrating mechanism in Synechocystis sp. strain PCC 6803.

scholarly journals Pyrenoid Starch Sheath Is Required for LCIB Localization and the CO2-Concentrating Mechanism in Green Algae

2020 ◽  
Vol 182 (4) ◽  
pp. 1883-1893 ◽  
Author(s):  
Chihana Toyokawa ◽  
Takashi Yamano ◽  
Hideya Fukuzawa
Keyword(s):  
Green Algae ◽  
Co2 Concentrating Mechanism ◽  
Concentrating Mechanism

Impacts of CO2 concentration on growth, lipid accumulation, and carbon-concentrating-mechanism-related gene expression in oleaginous Chlorella

2015 ◽  
Vol 99 (5) ◽  
pp. 2451-2462 ◽  
Author(s):  
Jianhua Fan ◽  
Hui Xu ◽  
Yuanchan Luo ◽  
Minxi Wan ◽  
Jianke Huang ◽  
...  
Keyword(s):  
Gene Expression ◽  
Lipid Accumulation ◽  
Co2 Concentration ◽  
Related Gene ◽  
Carbon Concentrating Mechanism ◽  
Concentrating Mechanism

scholarly journals Elevated Inorganic Carbon Concentrating Mechanism Confers Tolerance to High Light in an Arctic Chlorella sp. ArM0029B

2018 ◽  
Vol 9 ◽  
Author(s):  
Kwon Hwangbo ◽  
Jong-Min Lim ◽  
Seok-Won Jeong ◽  
Jayaraman Vikramathithan ◽  
Youn-Il Park ◽  
...  
Keyword(s):  
Inorganic Carbon ◽  
High Light ◽  
Carbon Concentrating Mechanism ◽  
Chlorella Sp ◽  
Concentrating Mechanism

scholarly journals The Carbon-Concentrating Mechanism of the Hydrothermal Vent Chemolithoautotroph Thiomicrospira crunogena

2005 ◽  
Vol 187 (16) ◽  
pp. 5761-5766 ◽  
Author(s):  
Kimberly P. Dobrinski ◽  
Dana L. Longo ◽  
Kathleen M. Scott
Keyword(s):  
Hydrothermal Vent ◽  
Carbon Concentrating Mechanism ◽  
Concentrating Mechanism ◽  
Thiomicrospira Crunogena

scholarly journals On-line stable isotope gas exchange reveals an inducible but leaky carbon concentrating mechanism in Nannochloropsis salina

2014 ◽  
Vol 121 (2-3) ◽  
pp. 311-322 ◽  
Author(s):  
David T. Hanson ◽  
Aaron M. Collins ◽  
Howland D. T. Jones ◽  
John Roesgen ◽  
Samuel Lopez-Nieves ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Gas Exchange ◽  
Carbon Concentrating Mechanism ◽  
Nannochloropsis Salina ◽  
Concentrating Mechanism ◽  
On Line

Model of the Carbon Concentrating Mechanism in Chloroplasts of Eukaryotic Algae

2001 ◽  
Vol 208 (3) ◽  
pp. 295-313 ◽  
Author(s):  
SILKE THOMS ◽  
MARKUS PAHLOW ◽  
DIETER A. WOLF-GLADROW
Keyword(s):  
Carbon Concentrating Mechanism ◽  
Eukaryotic Algae ◽  
Concentrating Mechanism
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