Occurrence and Pathogenicity of Hop Stunt Viroid Infecting Mulberry (Morus alba) Plants in China

To investigate the presence of hop stunt viroid (HSVd) in mulberry (Morus alba) plants in China, HSVd was detected by reverse transcription (RT)-PCR using dsRNAs extracted from symptomatic or asymptomatic mulberry leaf samples collected from a mulberry field located in Zhenjiang, China, as a templat...

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Veröffentlicht in:Plant disease. - 1997. - 107(2023), 10 vom: 14. Okt., Seite 2971-2977
1. Verfasser: Ma, Yu (VerfasserIn)
Weitere Verfasser: Han, Tao-Tao, Zhang, Peng, Tang, Jia-Xuan, Smith, William Kojo, Zhong, Kui, Yu, Jing, Cheng, Yong-Yuan, Zhao, Weiguo, Lu, Quan-You
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Agrobacterium-mediated infectious clone Hop stunt viroid mulberry (Morus alba L.) pathogenicity
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520 |a To investigate the presence of hop stunt viroid (HSVd) in mulberry (Morus alba) plants in China, HSVd was detected by reverse transcription (RT)-PCR using dsRNAs extracted from symptomatic or asymptomatic mulberry leaf samples collected from a mulberry field located in Zhenjiang, China, as a template and the primer pairs for HSVd detection. The primer pairs were designed based on the conserved sequence of 25 HSVd variants deposited in the GenBank database. Four out of a total of 53 samples were HSVd-positive, confirming that HSVd is present in mulberry plants in China. The consensus full-length nucleotide (nt) sequence of two HSVd variants determined by sequencing the HSVd variants in these four HSVd-positive samples consisted of 296 nt and shared the highest nt identity of 96.8% with that from plum in Turkey but relatively low identity with those from mulberry in Iran (87.3 to 90.8%). Phylogenetic analysis showed that these HSVd variants clustered together with those of the HSVd-hop group. Analysis of the infectivity and pathogenicity to hosts by the constructed Agrobacterium-mediated dimeric head-to-tail HSVd cDNA infectious clones demonstrated that one of the HSVd variants identified in this study infects the natural host, mulberry plants, and also infects experimental plants, cucumber, and tomato. It probably induces stunting symptoms in HSVd-infected tomatoes but does not induce symptoms on mulberry leaves or in cucumbers. Although HSVd infecting mulberry has been found in Iran, Italy, and Lebanon, this is the first study to report this viroid in naturally infected mulberry plants in China 
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650 4 |a Agrobacterium-mediated infectious clone 
650 4 |a Hop stunt viroid 
650 4 |a mulberry (Morus alba L.) 
650 4 |a pathogenicity 
700 1 |a Han, Tao-Tao  |e verfasserin  |4 aut 
700 1 |a Zhang, Peng  |e verfasserin  |4 aut 
700 1 |a Tang, Jia-Xuan  |e verfasserin  |4 aut 
700 1 |a Smith, William Kojo  |e verfasserin  |4 aut 
700 1 |a Zhong, Kui  |e verfasserin  |4 aut 
700 1 |a Yu, Jing  |e verfasserin  |4 aut 
700 1 |a Cheng, Yong-Yuan  |e verfasserin  |4 aut 
700 1 |a Zhao, Weiguo  |e verfasserin  |4 aut 
700 1 |a Lu, Quan-You  |e verfasserin  |4 aut 
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