Calcium acetate‐induced reduction of cadmium accumulation in Oryza sativa : Expression of auto‐inhibited calcium‐ ATP ase and cadmium transporters
| Autor: | Paitip Thiravetyan, Chairat Treesubsuntorn |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
ATPase chemistry.chemical_element Chromosomal translocation Calcium-Transporting ATPases Plant Science Acetates Biology Calcium 010603 evolutionary biology 01 natural sciences Gene Expression Regulation Plant Ecology Evolution Behavior and Systematics Plant Proteins Adenosine Triphosphatases Cadmium Oryza sativa ATPase Gene food and beverages Oryza General Medicine Calcium Compounds Calcium ATPase chemistry Biochemistry Shoot biology.protein 010606 plant biology & botany |
| Zdroj: | Plant Biology. 21:862-872 |
| ISSN: | 1438-8677 1435-8603 |
| DOI: | 10.1111/plb.12990 |
| Popis: | Calcium (Ca) signalling has an essential role in regulating plant responses to various abiotic stresses. This study applied Ca in various forms (Ca acetate and CaCl2 ) and concentrations to reduce cadmium (Cd) concentration in rice and propose a possible mechanism through which Ca acts to control the Cd concentration in rice. The results showed that supplementation of Cd-contaminated soil with Ca acetate reduced the Cd concentration in rice after exposure for 7 days in both hydroponic and soil conditions. The possible involvement of the auto-inhibited Ca2+ -ATPase gene (ACA) might act to control the primary signal of the Cd stress response. The messages from ACA3 and ACA13 tended to up-regulate the low-affinity cation transporter (OsLCT1) and down-regulate Cd uptake and the Cd translocation transporter, including the genes, natural resistance-associated macrophage protein 5 (Nramp5) and Zn/Cd-transporting ATPase 2 (HMA2), which resulted in a reduction in the Cd concentration in rice. After cultivation for 120 days, the application of Ca acetate into Cd-contaminated soil inhibited Cd uptake of rice. Increasing the Ca acetate concentration in the soil lowered the Cd concentration in rice shoots and grains. Moreover, Ca acetate maintained rice productivity and quality whereas both aspects decreased under Cd stress. |
| Databáze: | OpenAIRE |
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