Functional microorganisms inhibit cadmium uptake and accumulation of crops in polluted farmland
With the rapid development of industry and mining, cadmium (Cd)pollution is increasingly serious in farmland soil. Cd with mobility and high toxicity is easily absorbed by crops and accumulation in edible parts, enters the body through the food chain, thus affect human health. In order to reduce the Cd content in edible parts of crops in heavy metal contaminated farmland and ensure food safety in production, it is particularly important to develop and explore a set of environmentally friendly, safe and effective Cd pollution prevention and control technologies. Microbial remediation is a cost-effective and environmentally friendly remediation method for heavy metal pollution. It can not only reduce the bioavailability of Cd in soil by changing soil medium structure and biomeralization, but also indirectly regulate soil microbiome-driven element cycling to promote nutrient absorption by plants. Functional microorganisms can improve soil fertility and soil health, and have good application prospects in the safe production of food from contaminated farmland.
Biotechnology And National Health
Technologies for soil medium
2 years
Cadmium contaminated farmland in Hunan, Guangxi, and Henan provinces of China.
Functional microorganisms, including plant growth-promoting bacteria, can regulate nutrient element cycling driven by rhizosphere microbiome, improve nitrogen use efficiency, and reduce the bioavailability of heavy metals in soil. Functional microorganisms and their active metabolism ingredients can also improve the Cd interception and fixation ability of vegetative organs of crops, including rice and wheat, to further inhibit Cd transport to the edible parts. That is, functional microorganisms inhibited Cd transport and accumulation from contaminated soil to crop grains in a "two-stage" manner by reducing Cd availability in rhizosphere soil and improving Cd interception and fixation capacity of vegetative organs. Based on the study of functional strain and its active metabolites, the components of the developed Cd-reducing product have synergistic effects, which can effectively reduce Cd content in crop grains as well as increase the content of nutrient element K, Mg, Ca, Mn and Zn. The application of the products and their supporting application technology can ensure the safety and improve the quality of agricultural products. It has the advantages of green safety, low cost and easy promotion.
Achievement Transformation Award of the Chinese academy of agricultural sciences achievements(2023) - the development of science and technology award; Chinese Academy Of Agricultural Sciences - Dabeinong Innovation and Entrepreneurship Collaborative Award.
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