首页|孑遗植物水松不同季节根际微生物群落结构和功能特征

孑遗植物水松不同季节根际微生物群落结构和功能特征

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[目的]探索水松根际微生物群落结构和功能及随季节变化的规律.[方法]采用PCR-DGGE和Biolog-ECO微平板法测定不同季节水松根际土壤理化性质、微生物群落结构和功能,通过主成分分析和冗余分析等方法解析根际微生态各环境因子的内在规律.[结果]水松根际微生物群落中优势细菌为α-变形菌(Alphapro-teobacteria)、酸杆菌(Acidobacteria)和δ-变形菌(Deltaproteobacteria),优势真菌为粪壳菌(Sordario-mycetes).夏季水松根际微生物量和微生物多样性最高.根际微生物的碳代谢能力在夏季最强,冬季最弱,大致表现为夏季>秋季>春季>冬季,速效氮可能是微生物群落碳代谢功能的主要驱动因子.[结论]水松根际微生物群落多样性和碳代谢能力在夏季最优,在冬季最差.季节因素显著影响着根际微生物群落结构和功能,开展相关研究时应充分考虑季节因素造成的波动.
Functional Characteristics of Rhizosphere Soil Microbial Communities of Relict Plant Glyptostrobus pensilis in Different Seasons
[Objective]To explore the structure and function of rhizosphere microbial community of Glypto-strobus pensilis and its seasonal variation.[Methods]PCR-DGGE and Biolog-ECO microplate methods were used to determine the soil physicochemical properties,structure and function of rhizosphere microbi-al community of G.pensilis in different seasons,and the intrinsic patterns of rhizosphere microecological factors were analyzed by principal component analysis and redundancy analysis.[Result]The dominant bacterial in the rhizosphere microbial community of G.pensilis were Alphaproteobacteria,Acidobacteria and Deltaproteobacteria,and the dominant fungi was Sordariomycetes.Rhizosphere microbial biomass content and microbial diversity in the soil of G.pensilis are the highest in summer.Carbon metabolism of rhizosphere microorganisms in the summer was the largest,followed by autumn,spring,and winter.Avail-able nitrogen may be the main factor driving changes in the functional diversity of carbon metabolism in rhizosphere microbial communities.[Conclusion]The diversity and carbon metabolism ability of rhizo-sphere microbial community of G.pensilis are the best in summer and the worst in winter.Seasonal factors significantly affect the structure and function of rhizosphere microbial community,and the fluctuation caused by seasonal factors should be fully considered in the future related research.

Glyptostrobus pensilisrhizosphere microorganismseasonal dynamicPCR-DGGEBiolog-ECO

张晨、周柳婷、王炎炎、林瑞余、吴则焰

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福建农林大学菌草与生态学院,福建福州 350002

作物生态与分子生理学福建省高校重点实验室,福建福州 350002

福建省农业生态过程与安全监控重点实验室,福建福州 350002

福建省农业科学院农业生态研究所,福建福州 350013

福建农林大学生命科学学院,福建福州 350002

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水松 根际微生物 季节动态 PCR-DGGE Biolog-ECO

国家自然科学基金福建省自然科学基金福建省财政林业科技研究项目福建农林大学科技创新专项福建农林大学科技创新专项福建农林大学生态学一流学科建设项目

315004432022J011392023FKJ26KFb22046XAKJb22019XA

2024

10.12403/j.1001-1498.20230221

林业科学研究
中国林业科学研究院

林业科学研究

CSTPCD北大核心
影响因子：0.996
ISSN：1001-1498
年,卷(期)：2024.37(3)
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