한빛사논문
- 조회208
Hongjae Park 1 † *, Paul-Adrian Bulzu 1 †, Tanja Shabarova 1, Vinicius S Kavagutti 1, Rohit Ghai 1, Vojtěch Kasalický 1, Jitka Jezberová 1
1Institute of Hydrobiology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czech Republic.
†These authors contributed equally
*Corresponding author: correspondence to Hongjae Park
Abstract
Background
Picocyanobacteria from the genera Prochlorococcus, Synechococcus, and Cyanobium are the most widespread photosynthetic organisms in aquatic ecosystems. However, their freshwater populations remain poorly explored, due to uneven and insufficient sampling across diverse inland waterbodies.
Results
In this study, we present 170 high-quality genomes of freshwater picocyanobacteria from non-axenic cultures collected across Central Europe. In addition, we recovered 33 genomes of their potential symbiotic partners affiliated with four genera, Pseudomonas, Mesorhizobium, Acidovorax, and Hydrogenophaga. The genomic basis of symbiotic interactions involved heterotrophs benefiting from picocyanobacteria-derived nutrients while providing detoxification of ROS. The global abundance patterns of picocyanobacteria revealed ecologically significant ecotypes, associated with trophic status, temperature, and pH as key environmental factors. The adaptation of picocyanobacteria in (hyper-)eutrophic waterbodies could be attributed to their colonial lifestyles and CRISPR-Cas systems. The prevailing CRISPR-Cas subtypes in picocyanobacteria were I-G and I-E, which appear to have been acquired through horizontal gene transfer from other bacterial phyla.
Conclusions
Our findings provide novel insights into the population diversity, ecology, and evolutionary strategies of the most widespread photoautotrophs within freshwater ecosystems.
논문정보
- Research article
- 2024년 08월 (BRIC 등록일 2024-08-12)
- 국외 연구진
- 생명과학 > 분류/생태/환경생물학
댓글 작성 로그인
팝업 닫기관련 링크
관련분야 연구자보기
소속기관 논문보기
관련분야 논문보기
해당논문 저자보기
