|Table of Contents|

Effects and Mechanism of Sinorhizobiumfredii S15 in Reducing Cadmium and Lead Uptake of Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2020年05期
Page:
767-774
Research Field:
Publishing date:

Info

Title:
Effects and Mechanism of Sinorhizobiumfredii S15 in Reducing Cadmium and Lead Uptake of Soybean
Author(s):
ZHANG Jing;  ZHANG Ya-jian;  ZHOU Qian-qian;  SHENG Xia-fang;  HE Lin-yan
(College of Life Sciences, Nanjing Agricultural University/Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural, Nanjing 210095, China)
Keywords:
Rhizobium;  Soybean;  Heavy metals content;  Antioxidant enzyme
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2020.05.0767
Abstract:
In order to investigate the effect of rhizobia on the reduction of heavy metals in soybeans, a sand culture experiment was used to study the effects and mechanism of Sinorhizobiumfredii S15 on decreasing the uptake of cadmium and lead of soybeans. The results showed that strain S15 significantly reduced Cd (40% and 42%) and Pb (21% and 24%) contents in the roots and shoots of soybean compared with the control. Strain S15 could colonize at the root surface, increased the biomass and reduced the bioconcentration factor of Cd (40%) and Pb (21%) in the roots. Inoculated strain S15 increased soybean phosphorus(12%-24%) and nitrogen content(29%-81%), reduced root MDA content(27% and 19%) of soybeans, increased SOD (69%), POD (29%) and CAT (52%) activities under Cd stress and SOD (62%) activity under Pb stress. It also promoted the transform of the chemical forms of Cd or Pb from stronger migration to the weaker migration, hereby to limit the movement of Cd or Pb in soybeans. In a word, Sinorhizobiumfredii S15 can reduce the uptake of heavy metals in soybeans, and has the potential to ensure the safe production of soybeans.

References:

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Last Update: 2020-10-21