Contrasting plant growth performance of invasive polyploid and native diploid Prosopis is mediated by the soil bacterial community  

作　　者：Rishabh Kaushik Meesha Sharma Ch.V.Ramana Ch.Sasikala Maharaj K.Pandit 

机构地区：[1]Jealott’s Hill International Research Centre,Warfield,Bracknell RG426EY,England,UK [2]Department of Environmental Studies,University of Delhi,Delhi 110007,India [3]Department of Plant Sciences,School of Life Sciences,University of Hyderabad,P.O.Central University,Hyderabad 500046,India [4]Bacterial Discovery Laboratory,Centre for Environment,Institute of Science and Technology,J.N.T.University Hyderabad,Kukatpally,Hyderabad 500085,India [5]Jindal School of Environment&Sustainability,OP Jindal Global University,Sonipat,Haryana 131001,India

出　　处：《Ecological Processes》2023年第1期193-203,共11页生态过程（英文）

基　　金：supported by Faculty Research Grant of the Institution of Eminence,University of Delhi provided to MKP;This work received grant specifically from Department of Biotechnology(DBT/2015/UOD/358),Government of India,provided to RK;Financial support received from Council for Scientific and Industrial Research(CSIR)(09/045(1601)/2018/EMR-I)provided to MS is acknowledged;Infrastructure facilities funded by DST-FIST,UGC-SAP(DRS)and TEQIP and AICTE-MODROBS are acknowledged;The financial assistance of IoE FRP Grant to MKP is gratefully acknowledged.

摘　　要：Background Soil microbial communities affect above-ground plant diversity and community composition by influencing plant growth performance.Several studies have tested the effect of soil bacterial microbiome on growth performance of native and invasive plants,but the influence of specific bacterial isolates has not been investigated.Here,we investigated the effects of soil bacterial exclusion by soil sterilization and by inoculation of Streptomyces rhizobacterial isolates on the growth performance of native and invasive Prosopis congeners.Results Plant growth performance of invasive P.juliflora was significantly reduced when grown in sterilized soils,whereas native P.cineraria showed enhanced growth performance in the sterilized soils.When grown in the soil inoculated with the specific Streptomyces isolate from P.juliflora(PJ1),the growth performance of invasive P.juliflora was significantly enhanced while that of native P.cineraria seedlings was significantly reduced.However,inoculation of P.cineraria and P.juliflora seedlings with Streptomyces isolate from the rhizosphere of native P.cineraria(PC1)had no significant effect on the growth performances either of P.juliflora or P.cineraria.Conclusion Our study reveals that invasive P.juliflora experiences positive feedback from the non-native soil bacterial community,while the native P.cineraria experiences negative feedback from its soil bacterial community.Our results provide fresh experimental evidence for the enemy release hypothesis,and further our understanding of the contrasting growth-promoting effects of differentially recruited microbial species belonging to the same genus(Streptomyces)in the rhizospheres of alien invasive and native plants.

关 键 词：Soil bacteria STREPTOMYCES INVASIVE Prosopis juliflora Prosopis cineraria Soil microbiota 

分 类 号：S154.3[农业科学—土壤学]