Scholarlink

Background and aims <p>Ammonia oxidation is a key process in the nitrogen cycling of aquatic ecosystems. However, the influence of seasonal succession in submerged macrophytes on the rhizosphere comammox <i>Nitrospira</i> community remains poorly understood.</p> Methods <p>In this study, we established a mixed system of <i>Potamogeton crispus</i> and <i>Vallisneria natans</i> in a three-compartment root box with six different proportions of <i>P. crispus</i>, and conducted sediment sampling across four seasons.</p> Results <p>Comammox Clade A and Clade B exhibited distinct ecological strategies: Clade B responded to both seasonal and plant community composition along the gradient of <i>P. crispus</i> proportion, while Clade A was primarily sensitive to the plant community gradient, and the sublineages of Clade A showed clear niche differentiation with shifts in seasons and plant community composition. Furthermore, seasonal shifts and plant composition variations influenced the interactions among complete ammonia oxidizers, and the strongest synergistic effect was observed at the <i>P. crispus</i> proportion of 60%.</p> Conclusions <p>This study demonstrates that seasonal succession of submerged macrophytes drives significant niche differentiation in the rhizosphere comammox community, providing new theoretical insights into the plant-mediated regulation of microbial nitrogen cycling.</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 succession in submerged macrophyte communities alters the structure and niche of Comammox Nitrospira

  • 期刊论文

  • 发表日期：

    2026年7月1日

查看全文
  • Shilang Xiong,
  • Shiyi Tian,
  • Xueying Zhang,
  • Shuijiao Liao,
  • Yumei Hua,
  • Xiaoqiong Wan,
  • Jianwei Zhao

摘要

Background and aims

Ammonia oxidation is a key process in the nitrogen cycling of aquatic ecosystems. However, the influence of seasonal succession in submerged macrophytes on the rhizosphere comammox Nitrospira community remains poorly understood.

Methods

In this study, we established a mixed system of Potamogeton crispus and Vallisneria natans in a three-compartment root box with six different proportions of P. crispus, and conducted sediment sampling across four seasons.

Results

Comammox Clade A and Clade B exhibited distinct ecological strategies: Clade B responded to both seasonal and plant community composition along the gradient of P. crispus proportion, while Clade A was primarily sensitive to the plant community gradient, and the sublineages of Clade A showed clear niche differentiation with shifts in seasons and plant community composition. Furthermore, seasonal shifts and plant composition variations influenced the interactions among complete ammonia oxidizers, and the strongest synergistic effect was observed at the P. crispus proportion of 60%.

Conclusions

This study demonstrates that seasonal succession of submerged macrophytes drives significant niche differentiation in the rhizosphere comammox community, providing new theoretical insights into the plant-mediated regulation of microbial nitrogen cycling.