浒苔爆发对潮间带盐地碱蓬根际解磷细菌多样性的影响

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中文摘要：于2019年10月浒苔消亡期调研威海浒苔爆发区,以被浒苔覆盖的盐地碱蓬与正常生长盐地碱蓬为研究对象,调查了浒苔爆发对盐地碱蓬生长性状的影响,并结合Illumina Miseq高通量测序技术解析盐地碱蓬根际土壤解磷细菌群落多样性.结果表明:被浒苔覆盖的盐地碱蓬根际土壤含水率、电导率均显著高于未覆盖植株,其株高和根长也都显著低于未覆盖植株;浒苔爆发对盐地碱蓬根际解磷细菌群落丰富度无显著影响,但影响盐地碱蓬根际解磷细菌的均匀性,增加了解磷细菌的群落多样性;与正常植株相比,浒苔覆盖盐地碱蓬根际土壤解磷细菌群落在变形菌门(Proteobacteria)、放线菌门(Actinobacteria),Labrenzia、中慢生根瘤菌属(Mesorhizobium)、假单胞菌属(Pseudomonas)、红杆菌属(Rhodobacter)、黄单胞菌属(Xanthomonas)和链霉菌属(Streptomyces)均具有丰度差异;对影响解磷细菌群落结构变化的主要环境因子进行分析发现,速效钾、速效磷、碱解氮与解磷细菌多样性变化呈显著正相关.上述结果为揭示浒苔爆发对滨海湿地优势盐生植物根际功能微生物多样性的影响机制提供了依据.

外文标题：Effects of Ulva prolifera outbreak on diversity of phosphate-solubilizing bacteria in rhizosphere of Suaeda salsa in intertidal zone

外文摘要：We investigated the effects of Ulva prolifera outbreak on growth characteristics of Suaeda salsa in Weihai,Shandong during the extinction period of U.prolifera in October 2019.We analyzed diversity of phosphate-solubilizing bacteria community in rhizosphere soil of S.salsa by Illumina Miseq high-throughput sequencing.The results showed that after the outbreak of U.prolifera,water content and electrical conductivity of S.salsa rhizo-sphere soil covered by U.prolifera were significantly higher than those of uncovered by U.prolifera.Plant height and root length of S.salsa covered by U.prolifera were significantly lower than those of uncovered.The outbreak of U.prolifera did not affect richness of phosphate-solubilizing bacteria community of S.salsa rhizosphere,but affected its evenness and increased the community diversity.Compared with normally growing S.salsa,the abundance of phosphate-solubilizing bacteria including Proteobacteria,Actinobacteria,Labrenzia,Mesorhizobium,Pseudomonas,Rhodobacter,Xanthomonas and Streptomyces were all different in the rhizosphere soil of S.salsa covered by U.pro-lifera.Available potassium,available phosphate and alkali-hydrolyzed nitrogen were significantly positively correla-ted with the diversity of phosphate-solubilizing bacteria.Our results provided a basis for revealing the mechanism for driving the effect of U.prolifera outbreak on rhizosphere functional microbial diversity of dominant halophytes in coastal wetlands.

外文关键词：

Suaeda salsaUlva proliferarhizosphere phosphate-solubilizing bacteriahigh-throughput sequen-cing

作者：

高萌、郭晓红、丛永平、李姝蓉、王妍、李雅婷、吴楠

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作者单位：

鲁东大学资源与环境工程学院,山东烟台 264025

威海蓝色经济研究院,山东威海 264200

云南大学生命科学学院,昆明 650000

关键词：

盐地碱蓬浒苔根际解磷细菌高通量测序

基金：

国家自然科学基金项目国家自然科学基金项目国家自然科学基金项目山东省泰山学者青年专家项目山东省重点研发计划山东省自然科学基金

项目编号：

419770393217164942107128tsqn2018120972019GSF107018ZR2018PC004

出版年：

2023

DOI：

10.13292/j.1000-4890.202212.003

生态学杂志

中国生态学学会

生态学杂志

CSTPCDCSCD北大核心

影响因子：1.439

ISSN：1000-4890

年,卷(期)：2023.42(1)

参考文献量24