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Microbiota dynamics and source tracing during the growing, aging, and decomposing processes of leaves. | LitMetric

Microbiota dynamics and source tracing during the growing, aging, and decomposing processes of leaves.

Front Microbiol

Key Laboratory of Development and Utilization of Biological Resources in Colleges and Universities of Guizhou Province/Key Laboratory of Ecology and Management on Forest Fire in Higher Education Institutions of Guizhou Province, Guizhou Education University, Guiyang, China.

Published: December 2024

AI Article Synopsis

  • - The study investigates the impact of climate change on an important tree's growth, emphasizing the role of plant microbes in enhancing the tree's adaptation to environmental stress across different leaf stages: growing, aging, and decomposing.
  • - Analysis of root and leaf samples revealed that the leaf microbiota showed significant changes over these stages, with distinct composition and functionality, while the root microbiota remained relatively stable.
  • - A source-sink relationship was found between root and leaf microbiota, indicating that during the leaf growing and aging stages, more microbes migrated from roots to leaves, but during decomposition, the migration patterns shifted, highlighting the dynamic interactions between the two niches.

Article Abstract

, an important tree, faces serious threat to its growth from environmental stress, particularly climate change. Using plant microbes to enhance host adaptation to respond climate change challenges has been recognized as a viable and sustainable strategy. However, it is still unclear how the perennial tree microbiota varies across phenological stages and the links between respective changes in aboveground and belowground niches. Here, we sequenced 27 root and 27 leaf samples of using 16S rRNA and ITS amplicon sequencing techniques. These samples were obtained from the three main phenological stages of leaves, including leaf growing, aging and decomposing stages. Results showed that the diversity, composition, and function of the leaf microbiota of showed more obvious changes at three phenological time points compared to roots. Regarding alpha diversity, the root microbiota showed no difference across three sampling stages, while the leaf microbiota varied with sampling stages. Regarding beta diversity, the root microbiota clustered from different sampling stages, while the leaf microbiota exhibited distinct separation. Regarding composition and function, the dominant taxa and main functions of the root microbiota were the same in three sampling stages, while the leaf microbiota in the decomposing stage was obviously different from the remaining two stages. Additionally, taxa overlap and source-sink relationship existed between microbiota. Specifically, the degree of overlap among root microbiota was higher than that of leaf microbiota in three sampling stages. The bidirectional source-sink relationship that existed between the root and leaf niches varied with sampling stage. During the leaf growing and aging stages, the proportion of microbial members migrating from roots to leaves was higher than the proportion of members migrating from leaves to roots. During the leaf decomposing stage, the migration characteristics of the fungal community between the root and leaf niches maintained the same as in the remaining two stages, but the proportion of bacterial members migrating from leaves to roots was significantly higher than that of members migrating from roots to leaves. Our findings provide crucial foundational information for utilizing microbiota to benefit their host under climate change challenges.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11649662PMC
http://dx.doi.org/10.3389/fmicb.2024.1470450DOI Listing

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