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1. (WO2017147980) LEAF SURFACE BARRIER FOR ACCURATELY CONTROLLING CADMIUM ABSORPTION AND TRANSPORT RELATED GENE EXPRESSION IN RICE, AND APPLICATION THEREOF

Pub. No.:    WO/2017/147980    International Application No.:    PCT/CN2016/079111
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Apr 13 01:59:59 CEST 2016
IPC: A01G 7/06
A01G 22/22
C05D 11/00
C05D 9/00
Applicants: GUANGDONG INSTITUTE OF ECO-ENVIRONMENTAL SCIENCE & TECHNOLOGY
广东省生态环境技术研究所
Inventors: LI, Fangbai
李芳柏
LIU, Chuanping
刘传平
CUI, Jianghu
崔江虎
Title: LEAF SURFACE BARRIER FOR ACCURATELY CONTROLLING CADMIUM ABSORPTION AND TRANSPORT RELATED GENE EXPRESSION IN RICE, AND APPLICATION THEREOF
Abstract:
The present invention relates to the field of environmental protection, and in particular to a leaf surface barrier for accurately controlling cadmium absorption and transport related gene expression in rice, and an application thereof. The present invention comprises: reducing a raw material, i.e., selenious acid or selenite, by using ascorbic acid to generate a nanogel, and then emulsifying the nanogel for peptization to obtain a leaf surface barrier for accurately controlling cadmium absorption and transport related gene expression in rice; and then mixing the leaf surface barrier with a silica sol to obtain a composite selenium and silica sol leaf surface barrier. The present invention also provides a leaf surface barricading method for accurately controlling cadmium adsorption and transport related gene expression in rice. By applying the leaf surface barrier, the silica sol or the composite selenium and silica sol leaf surface barrier having a particular atomization degree and a particular concentration by means of foliar spray during a particular growth period of rice and within a particular time, the cadmium accumulation in rice can be effectively reduced. Applying the present invention to a moderately or lightly polluted field can enable cadmium content in rice to satisfy the food hygiene standards, and therefore is significant for achieving the safe use of the large area of field polluted by heavy metal cadmium in China.