Sugar transporter modulates nitrogen-determined tillering and yield formation in rice
Nitrogen (N) fertilizer application ensures crop production and food security worldwide. N-controlled boosting of shoot branching that is also referred as tillering can improve planting density for increasing grain yield of cereals. Here, we report that Sugar Transporter Protein 28 (OsSTP28) as a key regulator of N-responsive tillering and yield formation in rice. N supply inhibits the expression of OsSTP28, resulting in glucose accumulation in the apoplast of tiller buds, which in turn suppresses the expression of a transcriptional inhibitor ORYZA SATIVA HOMEOBOX 15 (OSH15) via an epigenetic mechanism to activate gibberellin 2-oxidases (GA2oxs)-facilitated gibberellin catabolism in shoot base. Thereby, OsSTP28-OSH15-GA2oxs module reduces the level of bioactive gibberellin in shoot base upon increased N supply, and consequently promotes tillering and grain yield. Moreover, we identify an elite allele of OsSTP28 that can effectively promote N-responsive tillering and yield formation, thus representing a valuable breeding target of N use efficiency improvement for agricultural sustainability.
Authors
- Mengfan Xu (ORCID: https://orcid.org/0009-0005-9951-1648)
- Mian Gu (ORCID: https://orcid.org/0000-0002-2202-0729)
- Jinfei Zhang (ORCID: https://orcid.org/0000-0003-2771-3097)
- Xinyu Guan
- Jingguang Chen (ORCID: https://orcid.org/0000-0002-0976-5312)
- Jinfang Chu (ORCID: https://orcid.org/0000-0003-1677-8776)
- Guohua Xu (ORCID: https://orcid.org/0000-0002-3283-2392)
- Yifeng Xu (ORCID: https://orcid.org/0009-0004-4641-5946)
- Wu Cui (ORCID: https://orcid.org/0000-0003-3501-0375)
- Ying Liu (ORCID: https://orcid.org/0000-0001-5753-4247)
- Yuyi Zhang (ORCID: https://orcid.org/0000-0003-0245-7744)
- Shunan Zhang (ORCID: https://orcid.org/0000-0003-1136-6924)
- Hongye Qu (ORCID: https://orcid.org/0009-0009-3477-3654)
Institutions
- Nanjing Agricultural University (CN)
- Sun Yat-sen University (CN)
- Chinese Academy of Sciences (CN)
- State Key Laboratory of Plant Genomics (CN)
- Institute of Genetics and Developmental Biology (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2024-10-25
- DOI
- https://doi.org/10.1038/s41467-024-53651-1
- Citations
- 43
- Primary Topic
- Plant nutrient uptake and metabolism
- Type
- article
- Field-Weighted Citation Impact
- 25.78
Funders
- National Natural Science Foundation of China
- China Agricultural University
- Chinese Academy of Agricultural Sciences
- Nanjing University
- Nanjing Agricultural University
- South China Agricultural University
- Jiangsu Provincial Key Research and Development Program
- National Key Research and Development Program of China