Soil bacterial community composition is more stable in kiwifruit orchards relative to phyllosphere communities over time

Environmental Microbiome

Research

Louis Ranjard¹  Ziva Louisson²  Gavin Lear²  Hannah L. Buckley³  Bradley S. Case³ 

[1] PlantTech Research Institute, 29 Grey St, 3011, Tauranga, New Zealand;School of Biological Sciences, University of Auckland, 3a Symonds Street, 1010, Auckland, New Zealand;School of Science, Auckland University of Technology, 34 St Paul Street, 1010, Auckland, New Zealand;

关键词: Temporal change;    Microbiome;    16S rRNA gene;    Community assembly processes;   

DOI  :  10.1186/s40793-023-00526-5

 received in 2023-06-18, accepted in 2023-08-17,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundSoil and phyllosphere (leaves and fruit) microbes play critical roles in the productivity and health of crops. However, microbial community dynamics are currently understudied in orchards, with a limited number incorporating temporal monitoring. We used 16S rRNA gene amplicon sequencing to investigate bacterial community temporal dynamics and community assembly processes on the leaves and fruit, and in the soil of 12 kiwifruit orchards across a cropping season in New Zealand.ResultsCommunity composition significantly differed (P < 0.001) among the three sample types. However, the communities in the phyllosphere substrates more closely resembled each other, relative to the communities in the soil. There was more temporal stability in the soil bacterial community composition, relative to the communities residing on the leaves and fruit, and low similarity between the belowground and aboveground communities. Bacteria in the soil were more influenced by deterministic processes, while stochastic processes were more important for community assembly in the phyllosphere.ConclusionsThe higher temporal variability and the stochastic nature of the community assembly processes observed in the phyllosphere communities highlights why predicting the responsiveness of phyllosphere communities to environmental change, or the likelihood of pathogen invasion, can be challenging. The relative temporal stability and the influence of deterministic selection on soil microbial communities suggests a greater potential for their prediction and reliable manipulation.

【 授权许可】

CC BY   
© BioMed Central Ltd., part of Springer Nature 2023

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