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Mycobiome analysis of leaf, root, and soil of symptomatic oil palm trees ( Jacq.) affected by leaf spot disease. | LitMetric

AI Article Synopsis

  • Recent studies are focusing on the importance of plant and microbial interactions in ecosystems, but research on how microbes affect plant health remains sparse.
  • This study analyzed the fungal communities in the leaves, roots, and soil of symptomatic and asymptomatic oil palm trees using DNA sequencing, discovering key differences in fungal diversity and abundance.
  • Notably, asymptomatic trees had richer fungal communities, particularly in soil samples, and the research suggests that specific abundant fungi in asymptomatic roots might serve as potential biocontrol agents against oil palm diseases.

Article Abstract

Recently, attention has been shifting toward the perspective of the existence of plants and microbes as a functioning ecological unit. However, studies highlighting the impacts of the microbial community on plant health are still limited. In this study, fungal community (mycobiome) of leaf, root, and soil of symptomatic leaf-spot diseased (SS) oil palm were compared against asymptomatic (AS) trees using ITS2 rRNA gene metabarcoding. A total of 3,435,417 high-quality sequences were obtained from 29 samples investigated. Out of the 14 phyla identified, Ascomycota and Basidiomycota were the most dominant accounting for 94.2 and 4.7% of the total counts in AS, and 75 and 21.2% in SS, respectively. is the most abundant genus for AS representing 8.0% of the identified amplicons compared to 2.0% in SS while is the most abundant with 8.6% of the identified amplicons for SS compared to 0.1% in AS. The biomarker discovery algorithm LEfSe revealed different taxa signatures for the sample categories, particularly soil samples from asymptomatic trees, which were the most enriched. Network analysis revealed high modularity across all groups, except in root samples. Additionally, a large proportion of the identified keystone species consisted of rare taxa, suggesting potential role in ecosystem functions. Surprisingly both AS and SS leaf samples shared taxa previously associated with oil palm leaf spot disease. The significant abundance of in the asymptomatic root samples could be further explored as a potential biocontrol agent against oil palm disease.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11659247PMC
http://dx.doi.org/10.3389/fmicb.2024.1422360DOI Listing

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