Recent Developments in the Study of the Biology of Sulfolobales: Acidothermophilic Archaea as Microbial Models and Platforms for Biomass Degradation
摘要
The extremophilic microbes belonging to the SulfolobalesSulfolobalesSulfolobales order of archaeaArchaea are known to thrive in acidic and high temperature environments. Their unique ability to withstand such harsh conditions is largely attributed to the enzymes they produce, which are highly resistant to extreme temperatures and pH levels. Due to their distinct genetic makeup and evolutionary position, these prokaryotic microorganisms have emerged as valuable models for studying the evolution of eukaryotic traits. SulfolobalesSulfolobales archaea can be broadly categorized into two groups based on their metabolic capabilities: chemolithotrophic ion and sulfur oxidizers that can fix carbon dioxide, and non-ion and sulfur oxidizers that rely on heterotrophic growth. Examples of the former group include the genus Metallosphaera, while the latter group is represented by the genera Saccharolobus and Sulfolobus. Metallosphaera species are recognized for their potential applications in bioleachingBioleaching, waste gas treatment, and production of bio-based chemicals from CO2, whereas Saccharolobus and Sulfolobus species hold promise in biomass degradation and utilization due to their unique biocatalytic properties and ability to grow on various carbon sources including hexose and pentose sugars. Despite their potential industrial significance, the practical exploitation of SulfolobalesSulfolobales microorganisms necessitates a comprehensive understanding of their biology and the establishment of genetic manipulation systems. Several comprehensive reviews have been published on various aspects of SulfolobalesSulfolobales biology, including their potential biotechnological applicationsBiotechnological applications such as bioleachingBioleaching, waste treatment, bio-based chemical production, and biomass degradation. In this section, we will provide an overview of recent research advancements in SulfolobalesSulfolobales biology and biotechnological applicationsBiotechnological applications, with a specific emphasis on biomass degradation utilizing obligate heterotrophic SulfolobalesSulfolobales species.