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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 Lee1*, Eunjung Roh1*, Sang Guen Kim2 and Hyun Gi Kong1,3
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
- Research article
- 2024년 07월 (BRIC 등록일 2024-07-25)
- 국내 연구진
- 생명과학 > 농림생태환경
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