解磷菌SCUEC21菌株的分离及其促生长特性

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中图分类号：S154.39 文献标识码：A文章编号：0439-8114（2025）11-0049-06DOI：10.14088/j.cnki.issn0439-8114.2025.11.006开放科学（资源服务）标识码（OSID）：

Isolation of the phosphorus-solubilizing SCUEC21 strain and its growth-promoting characteristics

RAOXiong-fei1，FENGTing²，ZHANGXiao-yu²，WUZhe-kuan1，XUYu-rong²， DOUXuan²，JIN Yong-xin²，DINGTing²，LI Xiao-hua² （1.HubeiAcadeboie，uha4oina；beiProclEgingdheseachnters UtilizationofMicrobiology/CollgeofLife Sciences，South-CentralMinzu University，Wuhan 43oo74，China）

Abstract：Aphosphorus $$ solubilizing bacterial strain，designated SCUEC21，was isolated from cigar rhizosphere soil using the phosphorusdisolutionzoneprimaryscreningandshakeflasksecondaryscreening.ThestrainwasidentifiedasPriestiaaryabhataibased oncolonymorphology，physiolgical-biochemicalcharacteristics，and16SNAgenesequenceanalysis.Furthermore，theirharac teristicssuchasphosphorssolubling，potasiumsolubiling，itrogen-fing，indole-3-aceticacid（IAA）-producing，lttolerant，acid-alkaliolerant，ndroughttolerantabilitieseredeteiedTheexperietalsultssoedtatteoranicho phorus-solubilizing amount of Priestia aryabhattai SCUEC21 was 47.79 μg/mL ，the organic phosphorus-solubilizing amount was 16.20μg/mL ，and the potassium-solubilizing amount was 27.45 μg/ mL.Meanwhile，ithadtheabilities of nitrogen fixationand IAA production，andexhibitedcertaintolerancetosalt，alkali，anddrought.PriestiaaryabhattiSCUEC21couldefectivelyincreasethe contentofphosphorusinthesoil，whichwasbeneficialtotheabsorptionandutlizationofphosphorusbycigarsplants，tusproviding an excellent germplasm resource for addressing the issue of insufficientphosphorus utilization byplants from soil.

KeyWords：phosphatesolubilizingbacteria;；cigarrhizospheresoil;Priestiaaryabhatai；SCUEC21strain；growthpromotioncarac teristics

磷是植物生长发育的重要营养物质，以矿质盐的形式存在于土壤中。（剩余11276字）