Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Universitario ceiA3, Universidad de Córdoba, Edificio Severo Ochoa, planta 1, ala Este, Campus de Rabanales, 14071 Córdoba, Spain.
Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Universitario ceiA3, Universidad de Córdoba, Edificio Severo Ochoa, planta 1, ala Este, Campus de Rabanales, 14071 Córdoba, Spain.
Curr Opin Microbiol. 2024 Apr;78:102432. doi: 10.1016/j.mib.2024.102432. Epub 2024 Feb 6.
Cyanobacteria evolved the oxygenic photosynthesis to generate organic matter from CO and sunlight, and they were responsible for the production of oxygen in the Earth's atmosphere. This made them a model for photosynthetic organisms, since they are easier to study than higher plants. Early studies suggested that only a minority among cyanobacteria might assimilate organic compounds, being considered mostly autotrophic for decades. However, compelling evidence from marine and freshwater cyanobacteria, including toxic strains, in the laboratory and in the field, has been obtained in the last decades: by using physiological and omics approaches, mixotrophy has been found to be a more widespread feature than initially believed. Furthermore, dominant clades of marine cyanobacteria can take up organic compounds, and mixotrophy is critical for their survival in deep waters with very low light. Hence, mixotrophy seems to be an essential trait in the metabolism of most cyanobacteria, which can be exploited for biotechnological purposes.
蓝藻进化出了产氧光合作用，能够利用 CO 和阳光来合成有机物质，并且它们是地球大气中氧气产生的主要贡献者。这使它们成为光合生物的模式生物，因为它们比高等植物更容易研究。早期的研究表明，只有少数蓝藻可能同化有机化合物，几十年来它们一直被认为主要是自养的。然而，在过去几十年中，通过实验室和野外的海洋和淡水蓝藻（包括有毒菌株）的研究，已经获得了令人信服的证据：通过使用生理和组学方法，发现混合营养是比最初想象的更为广泛的特征。此外，海洋蓝藻的优势类群可以吸收有机化合物，混合营养对于它们在光照非常低的深海中生存至关重要。因此，混合营养似乎是大多数蓝藻代谢的一个基本特征，它可以被用于生物技术目的。
