Scholarlink

<p>Seasonal changes drive rhythmic biological cycles across ecosystems, including unvegetated tidal flats, where strong temperature shifts shape microbial activity, yet long-term microbial rhythmicity remains unexplored. Here we show, using a two-year monthly dataset comprising 864 amplicons and 288 metagenomes from mudflats and sandflats in eastern China, that microbial communities and functions exhibit clear temporal rhythmicity and spatial heterogeneity, including variation in carbon fixation potential. Rhythmicity and network analyses identify temperature as the primary environmental factor associated with seasonal microbial rhythms, while sediment type and depth modulate their strength. MAG-based and metaproteomic analyses further support sulfur-oxidizing <i>Sulfurovum</i> and <i>Sulfurimonas</i> as primary contributors to strong seasonal fluctuations of rTCA-cycle genes in deeper mudflats. This study addresses a knowledge gap regarding long-term microbial rhythmicity in unvegetated tidal flats of eastern China. The observed temperature–microbe associations highlight the potential role of microbiomes in coastal carbon cycling; however, their generality at the global scale requires further validation.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Seasonal temperature changes shape microbial community patterns and carbon‑fixing gene fluctuations in tidal flats

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年8月1日

查看全文
  • Kuo-Jian Ma,
  • Yong-Lian Ye,
  • Yun-Han Fu,
  • Lin Xu,
  • Ge-Yi Fu,
  • Wei-Qi Fu,
  • Yue-Hong Wu,
  • Boran Kartal,
  • Cong Sun,
  • Xue-Wei Xu

摘要

Seasonal changes drive rhythmic biological cycles across ecosystems, including unvegetated tidal flats, where strong temperature shifts shape microbial activity, yet long-term microbial rhythmicity remains unexplored. Here we show, using a two-year monthly dataset comprising 864 amplicons and 288 metagenomes from mudflats and sandflats in eastern China, that microbial communities and functions exhibit clear temporal rhythmicity and spatial heterogeneity, including variation in carbon fixation potential. Rhythmicity and network analyses identify temperature as the primary environmental factor associated with seasonal microbial rhythms, while sediment type and depth modulate their strength. MAG-based and metaproteomic analyses further support sulfur-oxidizing Sulfurovum and Sulfurimonas as primary contributors to strong seasonal fluctuations of rTCA-cycle genes in deeper mudflats. This study addresses a knowledge gap regarding long-term microbial rhythmicity in unvegetated tidal flats of eastern China. The observed temperature–microbe associations highlight the potential role of microbiomes in coastal carbon cycling; however, their generality at the global scale requires further validation.