Genome and phylogenetic analyses of Chinese pepper mottle virus isolates from chili pepper plants

Zhang, Yu; Luo, Xuemei; Zhang, Deyong; Ouyang, Xing; Zhang, Zhanghong; Фан, Ли; Zhang, Chengjia; Chen, Jianxin; Zhou, Xuguo; Zhang, Songbai; Liu, Yong

doi:10.1007/s42161-018-00235-w

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…A phylogenetic analysis based on the deduced amino acid sequences indicated that all 13 Korean isolates of PepMoV formed one cluster that was distinct from American isolates [4]. A recent report indicated that full genome sequences of an isolate of PepMoV from Hunan China (PepMoV HN) are closely related to 18 PepMoV isolates from Korea that reported in previous studies [4,29,30]. However, when the authors of the latter study analyzed coat protein (CP) genes of nine PepMoV isolates from pepper in Southern China, they detected two distinct groups and subgroups.…”

Section: Diversity and Pathogenicitymentioning

confidence: 77%

Pepper Mottle Virus and Its Host Interactions: Current State of Knowledge

Miao

Kim

2021

Viruses

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Pepper mottle virus (PepMoV) is a destructive pathogen that infects various solanaceous plants, including pepper, bell pepper, potato, and tomato. In this review, we summarize what is known about the molecular characteristics of PepMoV and its interactions with host plants. Comparisons of symptom variations caused by PepMoV isolates in plant hosts indicates a possible relationship between symptom development and genetic variation. Researchers have investigated the PepMoV–plant pathosystem to identify effective and durable genes that confer resistance to the pathogen. As a result, several recessive pvr or dominant Pvr resistance genes that confer resistance to PepMoV in pepper have been characterized. On the other hand, the molecular mechanisms underlying the interaction between these resistance genes and PepMoV-encoded genes remain largely unknown. Our understanding of the molecular interactions between PepMoV and host plants should be increased by reverse genetic approaches and comprehensive transcriptomic analyses of both the virus and the host genes.

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Section: Diversity and Pathogenicitymentioning

confidence: 77%

Pepper Mottle Virus and Its Host Interactions: Current State of Knowledge

Miao

Kim

2021

Viruses

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The NIa-Protease Protein Encoded by the Pepper Mottle Virus Is a Pathogenicity Determinant and Releases DNA Methylation of Nicotiana benthamiana

et al. 2020

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It is well documented that the canonical function of NIa-protease (NIa-Pro) of the potyviruses is responsible for cleaving the viral polyprotein into functional proteins. Although NIa-Pro is vital for the infection cycle of potyviruses, the function of NIa-Pro in the interaction of the potyvirus host is not clear. In this study, NIa-Pro is ectopically expressed from a potato virus X (PVX) vector and infiltrates Nicotiana benthamiana wild type and 16-TGS. The pathogenicity and inhibition of host transcriptional gene silencing (TGS) are characterized. Ectopic expression of NIa-Pro from a PVX vector resulted in severe mosaic symptoms followed by a hypersensitive-like response in N. benthamiana. Furthermore, PepMoV NIa-Pro was able to reverse established TGS of a green fluorescent protein transgene by reducing methylation of promoter sequences in N. benthamiana and possessed the capacity to interfere with the global methylation of N. benthamiana. Taken together, the results of this study likely suggest that PepMoV NIa-Pro is a pathogenicity determinant and a potent suppressor of host TGS and suggest that NIa-Pro may employ novel mechanisms to suppress host antiviral defenses. To the best of our knowledge, this is the first report of a plant RNA virus modulating host TGS in a novel manner by interfering with the establishment of the methylation step of the plant DNA methylation pathway.

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Genome and phylogenetic analyses of Chinese pepper mottle virus isolates from chili pepper plants

Cited by 2 publications

References 17 publications

Pepper Mottle Virus and Its Host Interactions: Current State of Knowledge

Pepper Mottle Virus and Its Host Interactions: Current State of Knowledge

The NIa-Protease Protein Encoded by the Pepper Mottle Virus Is a Pathogenicity Determinant and Releases DNA Methylation of Nicotiana benthamiana

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