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Canker Disease Intensifies Cross-Kingdom Microbial Interactions in the Endophytic Microbiota of Citrus Phyllosphere

文献类型： 外文期刊

作者： Huang, Feng 1 ; Ling, Jinfeng 1 ; Zhu, Congyi 2 ; Cheng, Baoping 1 ; Song, Xiaobing 1 ; Peng, Aitian 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Key Lab Green Prevent & Control Fruits & Vegetable, Guangdong Prov Key Lab High Technol Plant Protect, Inst Plant Protect,Minist Agr & Rural Affairs, Guangzhou 510640, Peoples R China

2.Inst Fruit Tree Res, Guangdong Acad Agr Sci, Key Lab South Subtrop Fruit Biol & Genet Resource, Guangzhou 510640, Peoples R China

3.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangdong Prov Key Lab Trop & Subtrop Fruit Tree R, Guangzhou 510640, Peoples R China

关键词： 16S; canker; citrus; ITS; phyllosphere microbiome; Xanthomonas

期刊名称：PHYTOBIOMES JOURNAL （ 影响因子：4.4； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Plant disease is an important factor that affects the plant microbiome. However, for many plant-pathogen-microbiome interactions, the influences are unknown. Citrus, comprising abundant varieties of mandarin, sweet orange, pomelo, and lemon, is widely cultivated in different production areas in China. Most of these varieties are vulnerable to citrus canker, which is caused by Xanthomonas spp. In this study, asymptomatic and cankered leaves from asymptomatic and canker-infected trees, respectively, were collected from 17 orchards in six citrus production areas and their endophytic microbiomes were compared. The effects of canker on the microbial community richness and diversity were dependent on whether the interaction type was intrakingdom (for bacteria, positive) and interkingdom (for fungi, negative), respectively. The negative effects of canker on the fungal communities might be affected by the strong correlation between Xanthomonas and Fusarium/Gibberella species. The occurrence of canker significantly affected the composition and structure of both the endophytic fungal and bacterial communities, and altered the dominant genera of each community. In addition, canker occurrence intensified the cross-kingdom microbial interaction network, in which species of Enterobacter, Xanthomonas, Pseudomonas, and Pantoea were detected with increased roles in the network and responsible for the predominant functional genes involved in nutritional metabolism, the bacterial secretion system, and biotin metabolism. The results provide insights into the responses of the endophytic microbiome to citrus canker disease.

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