CO2 fertilization effect on rice growth is constrained by soil heavy metal contamination
Elevated atmospheric carbon dioxide concentration ([CO 2 ]) can stimulate crop growth and increase yield, but the effect may be constrained by soil contamination with heavy metals. In a free-air carbon dioxide enrichment experiment over three seasons, we found that soil heavy metal contamination can constrain or even reverse the projected CO 2 fertilization effect on rice yield. Elevated [CO 2 ] produced opposing effects on the accumulation of arsenic and cadmium in rice grain. Breeding crops for heavy-metal resistance and low arsenic accumulation may become necessary with continuing climate change.
Authors
- Chuanqi Ma
- Changfeng Ding (ORCID: https://orcid.org/0000-0002-6730-9382)
- Jishuang Zhang
- Ren Fang Shen (ORCID: https://orcid.org/0000-0001-6474-8198)
- Xiong Yang (ORCID: https://orcid.org/0000-0002-6096-2469)
- Chuang Cai (ORCID: https://orcid.org/0000-0002-9639-2023)
- Fang‐Jie Zhao (ORCID: https://orcid.org/0000-0002-0164-169X)
- Chuan Chen (ORCID: https://orcid.org/0000-0001-9460-9447)
- Ye Tao (ORCID: https://orcid.org/0000-0002-3963-6079)
- Lian Song (ORCID: https://orcid.org/0000-0003-4644-2704)
- Chunwu Zhu (ORCID: https://orcid.org/0000-0001-7867-322X)
- Dongming Wang
- Min Shen
Institutions
- Nanjing Agricultural University (CN)
- Nanjing University of Chinese Medicine (CN)
- Jiangsu Provincial Academy of Traditional Chinese Medicine (CN)
- Guangzhou Electronic Technology (China) (CN)
- University of Chinese Academy of Sciences (CN)
- Institute of Soil Science (CN)
Publication Details
- Journal
- The Crop Journal
- Published
- 2025-02-15
- DOI
- https://doi.org/10.1016/j.cj.2025.01.007
- Primary Topic
- Heavy metals in environment
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China