Seasonal transcriptomic shifts reveal metabolic flexibility of chemosynthetic symbionts in an upwelling region.

ABSTRACT: Upwelling in the Tropical Eastern Pacific profoundly affects marine coastal ecosystems by driving drastic seasonal changes in water temperature, oxygen levels, and nutrient availability. These conditions serve as a natural experiment that provides a unique opportunity to study how marine animals and their associated microorganisms respond in the face of environmental change. Lucinid bivalves host chemosynthetic Candidatus Thiodiazotropha symbionts equipped with diverse metabolic pathways for sulfur, carbon, and nitrogen use. However, how these symbionts employ their metabolic toolkit in a changing environment remains poorly understood. To address this question, we conducted metagenomic and metatranscriptomic analyses of Ctena cf. galapagana symbionts before and during

SUBMITTER: Morel-Letelier I 

PROVIDER: S-EPMC12172469 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature