The Plant Pathology Journal

The Korean Society of Plant Pathology (한국식물병리학회)
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Microbial Community Dysbiosis and Functional Gene Content Changes in Apple Flowers due to Fire Blight

  • Kong, Hyun Gi (Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Ham, Hyeonheui (Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Lee, Mi-Hyun (Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Park, Dong Suk (Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Lee, Yong Hwan (Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration)
  • Received : 2021.05.06
  • Accepted : 2021.06.06
  • Published : 2021.08.01
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Abstract

Despite the plant microbiota plays an important role in plant health, little is known about the potential interactions of the flower microbiota with pathogens. In this study, we investigated the microbial community of apple blossoms when infected with Erwinia amylovora. The long-read sequencing technology, which significantly increased the genome sequence resolution, thus enabling the characterization of fire blight-induced changes in the flower microbial community. Each sample showed a unique microbial community at the species level. Pantoea agglomerans and P. allii were the most predominant bacteria in healthy flowers, whereas E. amylovora comprised more than 90% of the microbial population in diseased flowers. Furthermore, gene function analysis revealed that glucose and xylose metabolism were enriched in diseased flowers. Overall, our results showed that the microbiome of apple blossoms is rich in specific bacteria, and the nutritional composition of flowers is important for the incidence and spread of bacterial disease.

Keywords

Acknowledgement

This work was carried out with the support of "Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ014934)" from Rural Development Administration, Republic of Korea.

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