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- Title
Mechanism and stability of low cadmium accumulation in grafted soybeans induced by rootstocks.
- Authors
Sun, Lizong; Jia, Chunyun; Xue, Chenyang; Guo, Cheng; Li, Xiaojun; Tai, Peidong
- Abstract
Background: Grafting can effectively reduce cadmium (Cd) accumulation in Solanaceae fruits. However, few studies have investigated the mechanisms and stability involved, making it difficult to apply grafting to a large area of Cd-contaminated farmland. Methods: Soybeans were grafted with low Cd accumulation variety rootstocks and varieties with high Cd accumulation as scions. High-throughput sequencing and q-PCR were used to explore the mechanism and stability of rootstock-induced low Cd accumulation in scions. Results: Grafting using low Cd accumulated varieties as rootstocks reduced the Cd content in the grafted soybeans by 50–70% and did not affect the yield and quality of soybeans. In addition, most of the differentially expressed genes (DEGs) induced by grafting were enriched in S-related pathways. In the grafted soybean with the best effect of Cd inhibition, compared with the control, the Cd content in the offspring decreased by more than 50%. Further, q-PCR showed that there was no significant difference in the expression patterns of the differential genes between scion leaves and offspring leaves. Conclusion: Rootstock with low Cd accumulation affects the transfer of Cd from the roots to the shoots, which is related to the downregulated expression of S-containing compounds that can be stably maintained in offspring.
- Subjects
ROOTSTOCKS; SOYBEAN; CADMIUM; NUCLEOTIDE sequencing; FRUIT
- Publication
Plant & Soil, 2023, Vol 483, Issue 1/2, p313
- ISSN
0032-079X
- Publication type
Article
- DOI
10.1007/s11104-022-05740-7