노은정 (농촌진흥청)

한빛사논문

조회111

노은정Eunjung Roh

농촌진흥청

New Phytol., Jul 19 2024, | https://doi.org/10.1111/nph.19971 Competition for nutrient niches within the apple blossom microbiota antagonizes the initiation of fire blight infection

Seung Yeup Lee^1*, Eunjung Roh^1*, Sang Guen Kim² and Hyun Gi Kong^1,3

¹Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, 55365, Korea;

²Department of Biological Sciences, KyonggiUniversity, Suwon-si, 16227, Korea;

³College of Agriculture, Life and Environment Sciences, Chungbuk National University, Cheongju-si, 28644, Korea

Author for correspondence: Hyun Gi Kong

Abstract

Changes in the plant microbiota composition are intimately associated with the health of the plant, but factors controlling the microbial community in flowers are poorly understood. In this study, we used apple flowers and fire blight as a model system to investigate the effects of floral microbiota and microbial competition on disease development and suppression. To compare changes in microbial flora with the RNA expression patterns of plants, the flower samples were collected in three different flowering stages (Bud, Popcorn, and Full-bloom). Using advanced sequencing technology, we analyzed the data and conducted both in vitro and in vivo experiments to validate our findings. Our results show that the Erwinia amylovora use arabinogalactan, which is secreted on the flowers, for early colonization of apple flowers. Pantoea agglomerans was more competitive for arabinogalactan than E. amylovora. Additionally, P. agglomerans suppressed the expression of virulence factors of E. amylovora by using arabinose, which is a major component of arabinogalactan, which induces virulence gene expression. The present data provide new insights into developing control strategies for diverse plant diseases, including fire blight, by highlighting the importance of nutrients in disease development or suppression.

논문정보

형식Research article
게재일2024년 07월 (BRIC 등록일 2024-07-25)
연구진국내 연구진
분야 생명과학 > 농림생태환경

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