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Comparative analysis of bacterial and fungal endophytes responses to Candidatus Liberibacter asiaticus infection in leaf midribs of Citrus reticulata cv. Shatangju

文献类型： 外文期刊

作者： Yan, Huaxue 1 ; Zhou, Birong 1 ; Jiang, Bo 1 ; Lv, Yuanda 1 ; Moniruzzaman, M. D. 1 ; Zhong, Guangyan 1 ; Zhong, Yun 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangzhou 510640, Peoples R China

2.Key Lab South Subtrop Fruit Biol & Genet Resource, Guangzhou 510640, Peoples R China

3.Guangdong Prov Key Lab Trop & Subtrop Fruit Tree, Guangzhou 510640, Peoples R China

关键词： Candidatus Liberibacter asiaticus; Mandarin; Endophyte; Fungi; Next generation sequencing

期刊名称：PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY （ 影响因子：2.747； 五年影响因子：2.388 ）

ISSN： 0885-5765

年卷期： 2021 年 113 卷

页码：

收录情况： SCI

摘要： The endophytic bacterial and fungal profiles were comparatively studied between Citrus Huanglongbing (HLB) infected and uninfected healthy leaves of a mandarin cultivar, Shatangju (Citrus reticulata Blanco), by using the next generation sequencing technology. A total of 53 endophytic bacterial orders in12 phyla and 24 endophytic fungal orders in 2 phyla were detected in healthy, asymptomatic and symptomatic leaf midribs. It was found that the predominant endophytic bacteria belonged to Proteobacteria, Firmicutes, Actinobacteria, and Bacteroidetes and the predominant endophytic fungi belonged to Ascomycota and Basidiomycota. Operational taxonomic unit (OTU) analysis showed that OTU_2 and OTU_6 were the core endophytic fungal OTUs, and OTU_10, OTU_4 and OTU_141 were the core endophytic bacterial OTUs. The richness and diversity of the endophytic microbes were affected by infection of the HLB bacterium, Candidatus Liberibacter asiaticus (CLas). The most significant change was the reduction in endophytic fungal OTUs following CLas infection. Eleven endophytic fungal OTUs and 24 endophytic bacterial OTUs were found to be associated with tree healthy status in citrus. Some of the healthy and HLB disease specific OTUs were discussed, with emphasis on their possible roles in HLB pathogenesis.

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