Enhanced CO<sub>2</sub> Coordinates the Spatial Recruitment of Diazotrophs in Rice Via Root Development
Understanding the reciprocal interaction between root development and coadapted beneficial microbes in response to elevated CO<sub>2</sub> (eCO<sub>2</sub>) will facilitate the identification of nutrient-efficient cultivars for sustainable agriculture. Here, systematic morphological, anatomical, chemical and gene expression assays performed under low-nitrogen conditions revealed that eCO<sub>2</sub> drove the development of the endodermal barrier with respect to L-/S-shaped lateral roots (LRs) in rice. Next, we applied metabolome and endodermal-cell-specific RNA sequencing and showed that rice adapts to eCO<sub>2</sub> by spatially recruiting diazotrophs via flavonoid secretion in L-shaped LRs. Using the rice Casparian strip mutant Oscasp1-1, we confirmed that reduced lignin deposition selectively recruits the diazotrophic family of Oxalobacteraceae to confer tolerance to low nitrogen availability.
Authors
- Muhammad Shahedul Alam (ORCID: https://orcid.org/0000-0002-7766-2526)
- Frank Hochholdinger (ORCID: https://orcid.org/0000-0002-5155-0884)
- Junwen Zhao (ORCID: https://orcid.org/0000-0003-2234-4501)
- Yaping Zhou (ORCID: https://orcid.org/0000-0002-9487-8644)
- Lukas Schreiber (ORCID: https://orcid.org/0000-0001-7003-9929)
- Kiran Suresh (ORCID: https://orcid.org/0000-0002-7959-6323)
- Michael Frei (ORCID: https://orcid.org/0000-0002-2474-6558)
- Bing Li (ORCID: https://orcid.org/0000-0002-5317-4798)
- Yuting Chen (ORCID: https://orcid.org/0000-0002-0595-5717)
- Qi Tao (ORCID: https://orcid.org/0000-0003-3041-7299)
- Peng Yu (ORCID: https://orcid.org/0000-0003-1670-8428)
- Marcel Baer (ORCID: https://orcid.org/0000-0001-7708-7202)
- Changquan Wang (ORCID: https://orcid.org/0000-0003-2668-6541)
Institutions
- University of Bonn (DE)
- Justus-Liebig-Universität Gießen (DE)
- Sichuan Agricultural University (CN)
- Chongqing Academy of Agricultural Sciences (CN)
- Technical University of Munich (DE)
Publication Details
- Journal
- Plant Cell & Environment
- Published
- 2024-11-11
- DOI
- https://doi.org/10.1111/pce.15259
- Primary Topic
- Legume Nitrogen Fixing Symbiosis
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Deutsche Forschungsgemeinschaft
- China Scholarship Council
- Rheinische Friedrich-Wilhelms-Universität Bonn
- Key Research and Development Program of Sichuan Province