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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제30권 제1호
- 발행연도
- 2020.1
- 수록면
- 118 - 126 (9page)
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Silicon and phosphorus are elements that are beneficial for plant growth. Despite the abundant availability of silicate and phosphate in the Earth’s crust, crop nutritional requirements for silicon and phosphorus are normally met through the application of fertilizer. However, fertilizers are one of the major causes of heavy metal pollution. In our study, we aimed to assess silicate and phosphate solubilization by the bacteria Enterobacter ludwigii GAK2, in the presence and absence of phosphate [Ca3(PO4)2] or silicate (Mg2O8Si3), to counteract cadmium stress in rice (Oryza sativa L). Our results showed that the GAK2-treated rice plants, grown in soil amended with phosphate [Ca3(PO4)2] or silicate (Mg2O8Si3), had significantly reduced cadmium content, and enhanced plant growth promoting characteristics including fresh shoot and root weight, plant height, and chlorophyll content. These plants showed significant downregulation of the cadmium transporter gene, OsHMA2, and upregulation of the silicon carrier gene, OsLsi1. Moreover, jasmonic acid levels were significantly reduced in the GAK2-inoculated plants, and this was further supported by the downregulation of the jasmonic acid related gene, OsJAZ1. These results indicate that Enterobacter ludwigii GAK2 can be used as a silicon and phosphorus bio-fertilizer, which solubilizes insoluble silicate and phosphate, and mitigates heavy metal toxicity in crops.
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참고문헌 (57)
참고문헌 신청
Khanna K / 2019 / Metal resistant PGPR lowered Cd uptake and expression of metal transporter genes with improved growth and photosynthetic pigments in Lycopersicon esculentum under metal toxicity / Sci. Rep 9:5855
Rao K / 2010 / Review on cadmium removal from aqueous solutions / Int. J. Eng. Sci. Technol. 2
Tóth G / 2016 / Heavy metals in agricultural soils of the European Union with implications for food safety / Environ. Int 88:299~309
Yang X / 2004 / Cadmium tolerance and hyperaccumulation in a new Znhyperaccumulating plant species(Sedum alfredii Hance) / Plant Soil 259:181~189
Sabiha J / 2009 / Heavy metal pollution from phosphate rock used for the production of fertilizer in Pakistan / Microchem. J 91:94~99
Rao K / 2010 / Review on cadmium removal from aqueous solutions / Int. J. Eng. Sci. Technol. 2
Tóth G / 2016 / Heavy metals in agricultural soils of the European Union with implications for food safety / Environ. Int 88:299~309
Yang X / 2004 / Cadmium tolerance and hyperaccumulation in a new Znhyperaccumulating plant species(Sedum alfredii Hance) / Plant Soil 259:181~189
Sabiha J / 2009 / Heavy metal pollution from phosphate rock used for the production of fertilizer in Pakistan / Microchem. J 91:94~99
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