# Nitrogen-fixing organelle in a marine alga

*PRI Rank #1 · Topics and Trends in Most Cited Marine and coastal ecosystems Papers, Class of 2026*

*Canonical URL: https://pri.pepkio.com/top-papers/marine-and-coastal-ecosystems/2026/rank-1*

| Field | Value |
| --- | --- |
| Rank | #1 |
| 18m citations | 137 |
| Journal | Science |
| Year | 2024 |
| DOI | 10.1126/science.adk1075 |
| Corresponding authors | Tyler H. Coale, Valentina Loconte, Jonathan P. Zehr |
| Institution | University of California, Santa Cruz, United States |

**Ranking page:** [Topics and Trends in Most Cited Marine and coastal ecosystems Papers, Class of 2026](https://pri.pepkio.com/top-papers/marine-and-coastal-ecosystems/2026)

**Paper link:** [10.1126/science.adk1075](https://doi.org/10.1126/science.adk1075)

## Topics

Candidatus Atelocyanobacterium thalassa (UCYN-A) · Candidatus Atelocyanobacterium thalassa (UCYN-A) · Candidatus Atelocyanobacterium thalassa (UCYN-A) · Candidatus Atelocyanobacterium thalassa (UCYN-A) · Nitrogen fixation · endosymbiosis · organellogenesis · marine unicellular alga · Nitrogen fixation · Cyanobacteria · protein import · organellar division · Candidatus Atelocyanobacterium thalassa (UCYN-A) · algal cell architecture · host-encoded proteins · prokaryote-eukaryote symbiosis · ammonia production

## Cite this ranking

```
Pepkio Research Index (PRI). Topics and Trends in Most Cited Marine and coastal ecosystems Papers, Class of 2026. https://pri.pepkio.com/top-papers/marine-and-coastal-ecosystems/2026. Accessed 2026-07-29.

Zheng Su, Tinsley Li, Thematic Shifts in Early-High-Impact Cancer Genomics and Diagnostics Research: A Bibliometric and Semantic Analysis. bioRxiv 2026.07.04.736459; doi: https://doi.org/10.64898/2026.07.04.736459
```