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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Science advances
2026
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/41779834/ |
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| _version_ | 1868266077003186176 |
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| author | Li, Menggong Li, Yunlong Mao, Shi-Hai Zhang, Zhixin Chen, Chong Nie, Xueying Liu, Xu Wang, Hui Liu, Xiaoshou Zhang, Weipeng Lin, Qiang Zhuang, Guang-Chao Sun, Jin |
| author_facet | Li, Menggong Li, Yunlong Mao, Shi-Hai Zhang, Zhixin Chen, Chong Nie, Xueying Liu, Xu Wang, Hui Liu, Xiaoshou Zhang, Weipeng Lin, Qiang Zhuang, Guang-Chao Sun, Jin Li, Menggong Li, Yunlong Mao, Shi-Hai Zhang, Zhixin Chen, Chong Nie, Xueying Liu, Xu Wang, Hui Liu, Xiaoshou Zhang, Weipeng Lin, Qiang Zhuang, Guang-Chao Sun, Jin |
| collection | PubMed - marine biology |
| contents | Intricate chemosymbiosis in a widespread shallow-water thyasirid clam. Li, Menggong Li, Yunlong Mao, Shi-Hai Zhang, Zhixin Chen, Chong Nie, Xueying Liu, Xu Wang, Hui Liu, Xiaoshou Zhang, Weipeng Lin, Qiang Zhuang, Guang-Chao Sun, Jin Animals Symbiosis Bivalvia Phylogeny RNA, Ribosomal, 16S Ecosystem Gills Chemosynthetic symbioses between animals and bacteria are common in marine ecosystems, but the symbioses in shallow-water thyasirid clams inhabiting suboxic sediments remain understudied despite their widespread occurrence. Here, we report that the shallow-water thyasirid clam , dominant in Yellow Sea sediments, harbors sulfur-oxidizing symbionts in pouch-like structures on the gill; the symbionts exhibit highly consistent genomic content and functionality across the region. Two phylotypes of symbionts are present, differing by a single base in the 16 rRNA gene while sharing key functional genes with minimal differences. Spatial metabarcoding analyses of gills showed that individuals also vary in the level of spatial heterogeneity concerning the two phylotypes. These symbionts exhibit active Calvin cycle gene expressions and close-knit host-symbiont metabolic integration. Furthermore, we estimated the capacity of dissolved inorganic carbon assimilation in the live holobiont by radiocarbon tracing (29.3 ± 8.7 nmol C·clam·day). Our findings provide the basis for understanding chemosymbiosis in thyasirid clams, highlight the potential of as a model for studying symbiosis, and underscore the ecological significance of shallow-water chemosymbioses overall. |
| format | Artículo científico |
| id | pubmed_41779834 |
| institution | PubMed |
| language | en |
| publishDate | 2026 |
| publisher | Science advances |
| record_format | pubmed |
| spellingShingle | Intricate chemosymbiosis in a widespread shallow-water thyasirid clam. Li, Menggong Li, Yunlong Mao, Shi-Hai Zhang, Zhixin Chen, Chong Nie, Xueying Liu, Xu Wang, Hui Liu, Xiaoshou Zhang, Weipeng Lin, Qiang Zhuang, Guang-Chao Sun, Jin Animals Symbiosis Bivalvia Phylogeny RNA, Ribosomal, 16S Ecosystem Gills Intricate chemosymbiosis in a widespread shallow-water thyasirid clam. Li, Menggong Li, Yunlong Mao, Shi-Hai Zhang, Zhixin Chen, Chong Nie, Xueying Liu, Xu Wang, Hui Liu, Xiaoshou Zhang, Weipeng Lin, Qiang Zhuang, Guang-Chao Sun, Jin Animals Symbiosis Bivalvia Phylogeny RNA, Ribosomal, 16S Ecosystem Gills Chemosynthetic symbioses between animals and bacteria are common in marine ecosystems, but the symbioses in shallow-water thyasirid clams inhabiting suboxic sediments remain understudied despite their widespread occurrence. Here, we report that the shallow-water thyasirid clam , dominant in Yellow Sea sediments, harbors sulfur-oxidizing symbionts in pouch-like structures on the gill; the symbionts exhibit highly consistent genomic content and functionality across the region. Two phylotypes of symbionts are present, differing by a single base in the 16 rRNA gene while sharing key functional genes with minimal differences. Spatial metabarcoding analyses of gills showed that individuals also vary in the level of spatial heterogeneity concerning the two phylotypes. These symbionts exhibit active Calvin cycle gene expressions and close-knit host-symbiont metabolic integration. Furthermore, we estimated the capacity of dissolved inorganic carbon assimilation in the live holobiont by radiocarbon tracing (29.3 ± 8.7 nmol C·clam·day). Our findings provide the basis for understanding chemosymbiosis in thyasirid clams, highlight the potential of as a model for studying symbiosis, and underscore the ecological significance of shallow-water chemosymbioses overall. |
| title | Intricate chemosymbiosis in a widespread shallow-water thyasirid clam. |
| topic | Animals Symbiosis Bivalvia Phylogeny RNA, Ribosomal, 16S Ecosystem Gills |
| url | https://pubmed.ncbi.nlm.nih.gov/41779834/ |