链霉菌HBERC-20716的分离鉴定及其对棉花的防病促生作用

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中图分类号：S476.1;S482.2 文献标识码：A

文章编号：0439-8114（2025）12-0099-05

DOI：10.14088/j.cnki.issn0439-8114.2025.12.017 开放科学（资源服务）标识码（OSID）：

Isolation and identification of Streptomyces sp.HBERC-20716 and evaluatingits disease prevention and growth-promoting effects on cotton

LONG Tong1，2，WAN Zhong-yi12，WANG Xiao-gang1，3，ZHANG You-chang1.3，AILun-qiang，FENG Chang-hui1，3 （1.KeyLaboratoofolondGeneticdingofCtidleRechoftngtiveinistryfgiclurndurafis， Wuhan430064，ubei;.betiEinRseachnteha40i;stiteocCosubce ofAgriculturalesai;ieblsube Hubei，China）

Abstract：Asainoftreptomessp.HER-O16，hichasidependentlyolatedandpreserd，asidentiddse cacyagainstotonfusailtasellsistsnotostsisdgrothpromoattoosdistageeeealuat ed.Throughmorphlogicaland16SrRNAgenesequenceanalyses，thestrainwasidentifiedasStreptomycespluricolorescensResults fromindoorpotexperimentsdemonstratedthatStreptomycespluricolorescensHBERC-2O716significantlyinhibitedtheourrence ofcotonfusarumwilt，withamarkedlylowerseedlingblightratecomparedtothecontrol.TreatmentofcotonseedlingswiththefermentationbrothofStreptomyespluricolorescensHBERC-2716inicateditsrowth-promotingefectoncoton，asevdencedbyplant height，freshweight，rootlength，ndotweightof heseedlingsbeingsignificantlygreaterthantoseintecontrol.Measueents ofphotosynthesisparametersshowedthatStreptomyespluricolorescensHBERC-2O716promotedphotosnthticperformancesignificantlyncreasingthentphotosyteticate，ranspirationratendstomataloductane，hilesubstantiallducingtheteellu lar CO2 concentration.

Keywords：Streptomyces pluricolorescens；coton;photosynthesis；fusarium wilt；growth promotion；biologicalcontrol

收稿日期：2025-09-26

棉花是中国重要的经济作物。（剩余7544字）