期刊论文

Effects of exogenous addition of Cd-tolerant bacteria on Cd uptake and accumulation and endophytic bacterial community structure in rice

中文

湖南农业大学学报(自然科学版)

1007-1032

2019

45

2

124-130

10.13331/j.cnki.jhau.2019.02.003

2018ZX0801101B:国家科技重大专项 2017YFD301500:国家重点研发计划 2018YFD0301005:国家重点研发计划

本校为第一机构

以水稻品种黄华占为试材,大棚盆栽水培水稻,添加耐镉内生细菌R3(Pantoea sp.)和R5(Stentrophomonas sp.)菌悬液(未施内生细菌菌悬液的为CK),研究外源耐镉菌对水稻植株Cd吸收和积累的影响,幵利用16S rDNA测序研究水稻植株内生细菌群落结构的变化。结果表明:与CK相比,在水稻分蘖盛期,R5菌株和R3菌株处理均能显著降低水稻植株各部位的Cd含量;R5菌株和R3菌株处理后的水稻植株内生细菌群落结构均发生了显著变化,水稻地上部内生细菌群落的多样性增加,根部内生细菌群落的多样性降低,Escherichia/Shigella和 Acinetobacter属在水稻植株内的相对丰度显著提高;R5菌株能够成功定殖到水稻的地上部。

The Cd-tolerant endophytic bacteria R3(Pantoea sp.) and R5(Stentrophomonas sp.) suspensions were applied to Huanghuazhan rice(CK was not added to endophytic bacteria suspension) grown in greenhouse. The absorption of cadmium by endophytic bacteria in the aboveground and underground parts of rice plants was studied. The amount of accumulation and 16S rDNA sequencing were used to study the changes of endophytic bacterial community structure in the aboveground and underground parts of rice plants. The results showed that R5 and R3 strains could significantly reduce the contents of cadmium in diff...