Arbuscular mycorrhizal fungi and the associated bacterial community influence the uptake of cadmium in rice

Chen, Xun Wen1,2; Wu, Li1; Luo, Na1; Hui, Ce1; Wong, Ming Hung1,2,3,4; Li, Hui1

2019-03

10.1016/j.geoderma.2018.10.029

GEODERMA   影响因子和分区

0016-7061

1872-6259

Cadmium (Cd)-contaminated rice imposes severe health risks to human. The present study investigated the role of arbuscular mycorrhizal fungi (AMF) in sculpting the rhizospheric bacterial community, and the potential effects on the Cd uptake by rice. AMF Funneliformis mosseae (Fm) or Rhizophagus intraradices (Ri) were inoculated to rice grown in soils spiked with 0 or 10 mu M Cd. Initial Cd concentration in soil was 0.18 mg/kg. AMF colonization rate, plant biomass, Cd content in rice, soil properties, rice Cd transporters (Nramp5 and HMA3) and soil bacterial community were analysed. Both AMF decreased (P < 0.05) root and shoot Cd concentrations, especially for Ri treatment. The higher relative abundance of Actinobacteria (mostly from genus Arthrobacter) observed in Ri treatment probably absorbed Cd in soil, and hence decreased the Cd availability for rice. Expression of genes Nramp5 and HMA3 in root were lower in Ri treatment, but higher in Fm treatment. The gene expressions were in line with the results of lower root Cd content in Ri treatment, and higher in Fm treatment. The present study firstly revealed that AMF can reduce rice Cd uptake by changing the expression of Cd transporters and soil bacterial community in a pot experiment. Effects of plants-bacteria-fungi interaction on both plant productivity and toxicants uptake deserved further study.

Symbiosis Heavy metal Oryza sativa Microbial community Actinobacteria

SCI ; EI

英语

其他

Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control[2017B030301012]

Agriculture

Soil Science

WOS:000456761500073

ELSEVIER SCIENCE BV

20184305987920

Bacteria ; Cadmium ; Gene expression ; Health risks ; Heavy metals ; Soils

Health Care:461.7 ; Biology:461.9 ; Soils and Soil Mechanics:483.1 ; Metallurgy and Metallography:531 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3

AGRICULTURAL SCIENCES

Web of Science

1.Jinan Univ, Guangdong Prov Res Ctr Environm Pollut Control &, Dept Ecol, Coll Life Sci & Technol, Guangzhou 510632, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, State Environm Protect Key Lab Integrated Surface, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
3.Educ Univ Hong Kong, Tai Po, CHEER, Hong Kong, Peoples R China
4.Educ Univ Hong Kong, Tai Po, Dept Sci & Environm Studies, Hong Kong, Peoples R China

Chen, Xun Wen,Wu, Li,Luo, Na,et al. Arbuscular mycorrhizal fungi and the associated bacterial community influence the uptake of cadmium in rice[J]. GEODERMA,2019,337:749-757.

Chen, Xun Wen,Wu, Li,Luo, Na,Hui, Ce,Wong, Ming Hung,&Li, Hui.(2019).Arbuscular mycorrhizal fungi and the associated bacterial community influence the uptake of cadmium in rice.GEODERMA,337,749-757.

Chen, Xun Wen,et al."Arbuscular mycorrhizal fungi and the associated bacterial community influence the uptake of cadmium in rice".GEODERMA 337(2019):749-757.