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Loquat (Eriobotrya japonica) Is a New Natural Host of Tomato Mosaic Virus and Citrus Exocortis Viroid

文献类型： 外文期刊

作者： He, Chengyong 1 ; Wang, Lingli 1 ; Li, Yarui 1 ; Zhou, Kangyu 1 ; Zhao, Ke 1 ; Chen, Dong 1 ; Li, Jing 1 ; Song, Haiyan 1 ; Tu, Meiyan 1 ;

作者机构： 1.Sichuan Acad Agr Sci, Inst Hort, Chengdu 610066, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Hort Crop Biol & Germplasm Creat Southwest, Chengdu 610066, Peoples R China

3.Anhui Agr Univ, Coll Hort, Hefei 230036, Peoples R China

关键词： loquat; ToMV; CEVd; new natural host; first report

期刊名称：PLANTS-BASEL （ 影响因子：4.0； 五年影响因子：4.4 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 14 期

页码：

收录情况： SCI

摘要： Loquat leaves exhibiting obvious yellowing, blistering, mosaic, leaf upward cupping, crinkle, and leaf narrowing were identified in Panzhihua City, Sichuan Province, China. High-throughput sequencing (HTS) with the ribo-depleted cDNA library was employed to identify the virome in the loquat samples; only tomato mosaic virus (ToMV) and citrus exocortis viroid (CEVd) were identified in the transcriptome data. The complete genome sequence of ToMV and CEVd were obtained from the loquat leaves. The full-length genome of the ToMV-loquat is 6376 nt and comprises four open reading frames (ORFs) encoding 183 kDa protein, RNA-dependent RNA polymerase (RdRp), movement protein (MP), and coat protein (CP), respectively. A pairwise identity analysis showed that the complete sequence of the ToMV-loquat had a nucleotide identity between 98.5 and 99.3% with other ToMV isolates. A phylogenetic analysis indicated that ToMV-loquat was more closely related to ToMV-IFA9 (GenBank No. ON156781). A CEVd sequence with 361 nt in length was amplified based on the HTS contigs, sequence alignment indicated CEVd-loquat had the highest identity with the strain of CEVd-Balad (GenBank No. PP869624), phylogenetic analysis showed that CEVd-loquat was more closely related to CEVd-lettuce (GenBank No. ON993891). This significant discovery marks the first documentation and characterization of ToMV and CEVd infecting loquat plants, shedding light on potential threats to loquat cultivation and providing insights for disease management strategies.

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