H2 production pathways in nutrient-replete mixotrophic Chlamydomonas cultures under low light. Response to the commentary article 'On the pathways feeding the H2 production process in nutrient-replete, hypoxic conditions,' by Alberto Scoma and Szilvia Z. Tóth
| Autor: | Alexandra Dubini, Emilio Fernández, David González-Ballester, Jose Luis Jurado-Oller, Aurora Galván |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine DCMU Algae lcsh:Biotechnology Management Monitoring Policy and Law Biology Photosynthesis 01 natural sciences Applied Microbiology and Biotechnology lcsh:Fuel 03 medical and health sciences chemistry.chemical_compound Nutrient lcsh:TP315-360 lcsh:TP248.13-248.65 Botany Biomass Light response Photohydrogen Low oxygen Acetate Renewable Energy Sustainability and the Environment Chlamydomonas Low light biology.organism_classification Oxygen 030104 developmental biology General Energy chemistry Biofuels Commentary Mixotroph Hydrogen 010606 plant biology & botany Biotechnology |
| Zdroj: | Biotechnology for Biofuels, Vol 10, Iss 1, Pp 1-7 (2017) Biotechnology for Biofuels |
| ISSN: | 1754-6834 |
| Popis: | Background A recent Commentary article entitled “On the pathways feeding the H2 production process in nutrient-replete, hypoxic conditions” by Dr. Scoma and Dr. Tóth, Biotechnology for Biofuels (2017), opened a very interesting debate about the H2 production photosynthetic-linked pathways occurring in Chlamydomonas cultures grown in acetate-containing media and incubated under hypoxia/anoxia conditions. This Commentary article mainly focused on the results of our previous article “Low oxygen levels contribute to improve photohydrogen production in mixotrophic non-stressed Chlamydomonas cultures,” by Jurado-Oller et al., Biotechnology for Biofuels (7, 2015; 8:149). Main body Here, we review some previous knowledge about the H2 production pathways linked to photosynthesis in Chlamydomonas, especially focusing on the role of the PSII-dependent and -independent pathways in acetate-containing nutrient-replete cultures. The potential contributions of these pathways to H2 production under anoxia/hypoxia are discussed. Conclusion Despite the fact that the PSII inhibitor DCMU is broadly used to discern between the two different photosynthetic pathways operating under H2 production conditions, its use may lead to distinctive conclusions depending on the growth conditions. The different potential sources of reductive power needed for the PSII-independent H2 production in mixotrophic nutrient-replete cultures are a matter of debate and conclusive evidences are still missing. |
| Databáze: | OpenAIRE |
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