Scholarlink

<p>Temperature, photosynthetically active radiation, and nutrient availability are pivotal in determining the global distribution of marine cyanobacteria. This study demonstrates that the distinct latitudinal niches of <i>Synechococcus</i> and <i>Prochlorococcus</i> are modulated by their temperature-dependent, mixotrophic nitrogen utilization strategies. Comparative genomic analysis reveals that <i>Prochlorococcus</i> ecotypes differ in their nitrogen transporter repertoire, with low-light ecotypes harboring ~12 transporters, while high-light ecotypes possess ~5 transporters. Conversely, <i>Synechococcus</i> displays greater genomic flexibility, with 17 nitrogen transporters. Reanalysis of Tara Oceans metatranscriptomic data identifies ~15 °C as a key thermal threshold for cyanobacterial distribution. In warmer regions (15-30°C, 35˚S-40˚N), <i>Prochlorococcus</i> optimizes nitrogen transporter functions across their ecotypes, whereas <i>Synechococcus</i>, leveraging its broad nitrogen transporters, exhibits functional plasticity, utilizing inorganic nitrogen in warmer waters and organic nitrogen in cooler waters ranging from -2°C to 15 °C beyond 35˚S/40˚N. Our findings underscore the critical role of temperature-driven mixotrophic nitrogen utilization in shaping the biogeographical patterns of marine cyanobacteria.</p><p></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

Temperature-driven nitrogen mixotrophy shapes marine cyanobacteria Prochlorococcus and Synechococcus latitudinal distribution pattern

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年2月26日

查看全文
  • Buce Hetharua,
  • Min Xu,
  • Shan Sun,
  • Kaidian Zhang,
  • Huidan Yang,
  • Hongbing Liu,
  • Shuh-Ji Kao

摘要

Temperature, photosynthetically active radiation, and nutrient availability are pivotal in determining the global distribution of marine cyanobacteria. This study demonstrates that the distinct latitudinal niches of Synechococcus and Prochlorococcus are modulated by their temperature-dependent, mixotrophic nitrogen utilization strategies. Comparative genomic analysis reveals that Prochlorococcus ecotypes differ in their nitrogen transporter repertoire, with low-light ecotypes harboring ~12 transporters, while high-light ecotypes possess ~5 transporters. Conversely, Synechococcus displays greater genomic flexibility, with 17 nitrogen transporters. Reanalysis of Tara Oceans metatranscriptomic data identifies ~15 °C as a key thermal threshold for cyanobacterial distribution. In warmer regions (15-30°C, 35˚S-40˚N), Prochlorococcus optimizes nitrogen transporter functions across their ecotypes, whereas Synechococcus, leveraging its broad nitrogen transporters, exhibits functional plasticity, utilizing inorganic nitrogen in warmer waters and organic nitrogen in cooler waters ranging from -2°C to 15 °C beyond 35˚S/40˚N. Our findings underscore the critical role of temperature-driven mixotrophic nitrogen utilization in shaping the biogeographical patterns of marine cyanobacteria.