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Cd accumulation, biomass and yield of rice are varied with silicon application at different growth phases under high concentration cadmium-contaminated soil.
Chemosphere. 2020 Mar; 242:125128.C

Abstract

Many reports suggest that exogenous Si addition could reduce Cd translocation to aerial part and make grain safe for rice production. But it remains unclear whether its supplementation during different growth phases can differentially impact Cd uptake in rice. Here, Positive effects of Si applied at different growth phases on biomass and yield of rice were observed. Dry weight of shoot including stem, leaf and grain was enhanced significantly by 15% when Si added at transplanting stage. Grain-yields supplied with Si at transplanting, jointing and heading stages were increased obviously by 14%, 11% and 12%, respectively. Higher percentage of filled spikelet and lower unfilled spikelet number per panicle were found when Si supplied at jointing stage. The increases of Cd accumulation in rice plants by Si application were mainly manifested in roots. Compared to CK, Cd accumulation in root when Si applied at transplanting and tillering stages were elevated by 75% and 64%, respectively. While Cd accumulation in aboveground tissues were all declined by Si addition. Bioconcentration and translocation factors were decreased significantly when Si added at jointing stage. In addition, higher soil pH, lowest available Cd-concentration in soil and Cd2+ concentration in xylem sap at 15d after flowering were found when the Si was applied at jointing stage. Overall, Si application at transplanting would be more beneficial to the growth of rice and increased Cd content in root, while Si supplied at jointing would be more favorable for grain filling and reducing Cd accumulation in shoot.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Cai Y
Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou, 510642, PR China. Electronic address: caiyixia@scau.edu.cn.
Zhang S
Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou, 510642, PR China. Electronic address: 947980452@qq.com.
Cai K
Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou, 510642, PR China. Electronic address: kzcai@scau.edu.cn.
Huang F
Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou, 510642, PR China. Electronic address: feihuang@scau.edu.cn.
Pan B
Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou, 510642, PR China. Electronic address: panbogui@qq.com.
Wang W
College of Agronomy, South China Agricultural University, Guangzhou, 510642, PR China. Electronic address: wangwei@scau.edu.cn.

MeSH

BiomassCadmiumEdible GrainEnvironmental PollutionOryzaPlant LeavesSiliconSoilSoil Pollutants

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31678846

Citation

Cai, Yixia, et al. "Cd Accumulation, Biomass and Yield of Rice Are Varied With Silicon Application at Different Growth Phases Under High Concentration Cadmium-contaminated Soil." Chemosphere, vol. 242, 2020, p. 125128.
Cai Y, Zhang S, Cai K, et al. Cd accumulation, biomass and yield of rice are varied with silicon application at different growth phases under high concentration cadmium-contaminated soil. Chemosphere. 2020;242:125128.
Cai, Y., Zhang, S., Cai, K., Huang, F., Pan, B., & Wang, W. (2020). Cd accumulation, biomass and yield of rice are varied with silicon application at different growth phases under high concentration cadmium-contaminated soil. Chemosphere, 242, 125128. https://doi.org/10.1016/j.chemosphere.2019.125128
Cai Y, et al. Cd Accumulation, Biomass and Yield of Rice Are Varied With Silicon Application at Different Growth Phases Under High Concentration Cadmium-contaminated Soil. Chemosphere. 2020;242:125128. PubMed PMID: 31678846.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cd accumulation, biomass and yield of rice are varied with silicon application at different growth phases under high concentration cadmium-contaminated soil. AU - Cai,Yixia, AU - Zhang,Shihao, AU - Cai,Kunzheng, AU - Huang,Fei, AU - Pan,Bogui, AU - Wang,Wei, Y1 - 2019/10/15/ PY - 2019/06/20/received PY - 2019/10/11/revised PY - 2019/10/14/accepted PY - 2019/11/5/pubmed PY - 2020/2/19/medline PY - 2019/11/4/entrez KW - Accumulation and translocation KW - Cadmium KW - Growth KW - Rice (Oryza sativa L.) KW - Silicon SP - 125128 EP - 125128 JF - Chemosphere JO - Chemosphere VL - 242 N2 - Many reports suggest that exogenous Si addition could reduce Cd translocation to aerial part and make grain safe for rice production. But it remains unclear whether its supplementation during different growth phases can differentially impact Cd uptake in rice. Here, Positive effects of Si applied at different growth phases on biomass and yield of rice were observed. Dry weight of shoot including stem, leaf and grain was enhanced significantly by 15% when Si added at transplanting stage. Grain-yields supplied with Si at transplanting, jointing and heading stages were increased obviously by 14%, 11% and 12%, respectively. Higher percentage of filled spikelet and lower unfilled spikelet number per panicle were found when Si supplied at jointing stage. The increases of Cd accumulation in rice plants by Si application were mainly manifested in roots. Compared to CK, Cd accumulation in root when Si applied at transplanting and tillering stages were elevated by 75% and 64%, respectively. While Cd accumulation in aboveground tissues were all declined by Si addition. Bioconcentration and translocation factors were decreased significantly when Si added at jointing stage. In addition, higher soil pH, lowest available Cd-concentration in soil and Cd2+ concentration in xylem sap at 15d after flowering were found when the Si was applied at jointing stage. Overall, Si application at transplanting would be more beneficial to the growth of rice and increased Cd content in root, while Si supplied at jointing would be more favorable for grain filling and reducing Cd accumulation in shoot. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/31678846/Cd_accumulation_biomass_and_yield_of_rice_are_varied_with_silicon_application_at_different_growth_phases_under_high_concentration_cadmium_contaminated_soil_ DB - PRIME DP - Unbound Medicine ER -