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|a 10.1094/PDIS-11-23-2541-PDN
|2 doi
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|a pubmed24n1392.xml
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|a eng
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|a Cui, Xiaoling
|e verfasserin
|4 aut
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|a First report of cucumber green mottle mosaic virus infecting Cynanchum rostellatum in China
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a Date Revised 28.04.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a Cucumber green mottle mosaic virus (CGMMV) was first discovered on cucumber in the United Kingdom in 1935 (Ainsworth, 1935), and has spread worldwide except to Antarctica (Jones, 2021). Given its extensive damage, it is considered an important pathogen on global cucurbit plants and fruit crops. In China, CGMMV was first reported on pumpkin in Guangxi Province in 2003 (Qin et al., 2005), and occurred on 34 plants species across 23 provinces (Liu et al., 2016). Cynanchum rostellatum is a member of the family Apocynaceae. In July 2021, leaves of C. rostellatum exhibiting virus-like symptoms (yellowing, severe crinkling, deformation) were observed and collected in Liaoning Province, China. Aphids were also observed on the leaves and stems (Fig. S1) of the plants and were collected. Total RNA was extracted from diseased leaves following the CTAB method, followed by the depletion of ribosomal RNAs (rRNA) with TIANSeq rRNA Depletion Kit (Tiangen, China). The RNAs were, then processed into a DNBSEQ LncRNA-Seq library, and sequenced on the MGISEQ-2000 platform at BGI Genomics (Wuhan, China). A total of 106.98 M clean reads were obtained after data filtering using SOAPnuke software (BGI, China). The clean reads were assembled into contigs using CLC Genomics Workbench 11 (Qiagen, USA) and Trinity v2.0.6 (Haas et al., 2013). A contig (4,760 reads, average coverage:73.76) of 6,391 nucleotides was found to share the highest sequence identity (99.83%) with CGMMV isolate GDLZ (MK933286), irrespective of other virus-like contigs related to Polerovirus and Totivirus. Based on the genome of GDLZ isolate, seven specific primers (Table S1) were designed to amplify the full viral genomic sequences using a PrimeScriptTM One-Step RT-PCR Kit. Seven expected amplicons were obtained, cloned, and sequenced. The complete genome was determined to be 6,423 nucleotides (GenBank accession number OR854819) in length and designated as LNMJ isolate. LNMJ shared 96.8%-99.7% nucleotide sequence identities with CGMMV isolates from China. Phylogenetic analysis based on the complete genome sequences showed that LNMJ clustered together with CGMMV isolates hn (GenBank accession number KC851866), GDLZ (GenBank accession number MK933286), and JD8 (GenBank accession number KM873784) from China. The specific primers LM-TJ-3F/3R were designed to determine the virus-symptom association for LNMJ, and all twelve symptomatic C. rostellatum plants collected from fields tested positive for LNMJ. Two out of six randomly selected aphids from the diseased plants also tested positive. To further prove its infectivity, LNMJ was inoculated mechanically onto ten healthy Nicotiana benthamiana plants, and the results indicated a high infection rate of 80% (8/10), at 30 days post-inoculation despite no distinct symptoms observed. To our knowledge, this is the first report of the natural infection of C. rostellatum plants with CGMMV. C. rostellatum is a widespread herb in China (Wei et al., 2019) and more surveys are needed to determine the distribution of CGMMV. The habitats of C. rostellatum span diverse agroecological zones, and thus our study underscores the potential spillover of CGMMV to neighboring crops as a significant risk
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|a Journal Article
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|a Causal Agent
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|a Epidemiology
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| 650 |
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|a Pathogen detection
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| 650 |
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4 |
|a Subject Areas
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| 650 |
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4 |
|a Viruses and viroids
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| 650 |
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4 |
|a disease development and spread
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| 700 |
1 |
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|a Li, Yujie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a An, Wenxia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Chengyu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Song
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cao, Mengji
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Caixia
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Plant disease
|d 1997
|g (2024) vom: 28. Apr.
|w (DE-627)NLM098181742
|x 0191-2917
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|g year:2024
|g day:28
|g month:04
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|u http://dx.doi.org/10.1094/PDIS-11-23-2541-PDN
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