典型文献
Cultivar-dependent rhizobacteria community and cadmium accumulation in rice:Effects on cadmium availability in soils and iron-plaque formation
文献摘要：
The association between the rhizospheric microbial community and Cd accumulation in rice is poorly understood.A field trial was conducted to investigate the different rhizobac-terial communities of two rice cultivars with high Cd accumulation(HA)and low Cd accu-mulation(LA)at four growth stages.Results showed that the Cd content in the roots of the HA cultivar was 1.23-27.53 higher than that of the LA cultivar(0.08-10.5 pg/plant)at four stages.The LA cultivar had a significantly lower Cd availability in rhizosphere and a higher quantity of iron plaque(IP)on the root surface than the HA cultivar at four stages.This re-sulted in the reduction of Cd concentration in IPs and Cd translocation from IP-to-root.Mi-crobial analysis indicated that the LA cultivar formed a distinct rhizobacterial community from the HA cultivar and had less a-diversity.The rhizosphere of the LA cultivar was en-riched in specific bacterial taxa(e.g.,Massilia and Bacillus)involved in Cd immobilization by phosphate precipitation and IP formation by iron oxidization.However,the rhizosphere in the HA cultivar assembled abundant sulfur-oxidizing bacteria(e.g.,Sulfuricurvum)and iron reduction bacteria(Geobacter).They promoted Cd mobilization and reduced IP formation via the metal redox process.This study reveals a potential approach in which specific rhizobac-teria decrease or increase Cd accumulation in rice on contaminated soil and provides a new perspective for secure rice production.
文献关键词：
中图分类号：
作者姓名：
Feng Zhang;Di Peng;Lu Liu;Huidan Jiang;Lianyang Bai
作者机构：
Longping Branch,Graduate School of Hunan University,Changsha 410125,China;Biotechnology Research Institute,Hunan Academy of Agricultural Sciences,Changsha 410125,China
文献出处：
引用格式：
[1]Feng Zhang;Di Peng;Lu Liu;Huidan Jiang;Lianyang Bai-.Cultivar-dependent rhizobacteria community and cadmium accumulation in rice:Effects on cadmium availability in soils and iron-plaque formation)[J].环境科学学报（英文版）,2022(06):90-102
A类：
Cultivar,rhizospheric,rhizobac,IPs,rhizobacterial,Sulfuricurvum
B类：
dependent,community,cadmium,accumulation,rice,Effects,availability,soils,iron,plaque,formation,association,between,microbial,Cd,poorly,understood,field,trial,was,conducted,investigate,different,communities,two,cultivars,HA,LA,four,growth,stages,Results,showed,that,content,roots,higher,than,pg,plant,had,significantly,lower,rhizosphere,quantity,surface,This,sulted,reduction,concentration,translocation,from,Mi,analysis,indicated,formed,distinct,less,diversity,riched,specific,taxa,Massilia,Bacillus,involved,immobilization,by,phosphate,precipitation,oxidization,However,assembled,abundant,sulfur,oxidizing,Geobacter,They,promoted,reduced,via,metal,redox,process,study,reveals,potential,approach,which,decrease,increase,contaminated,provides,new,perspective,secure,production
AB值：
0.435297
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