Ophiovirus

Milne, Robert G.; García, María Laura; Vaira, A. M.

doi:10.1007/978-0-387-95919-1_155

Cited by 14 publications

(6 citation statements)

References 24 publications

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“…However, instead of the GDNQ of most of the non-segmented viruses present, the four ophioviruses have the SDD sequence in motif C, which is a signature for segmented negative-stranded RNA virus families Orthomyxoviridae, Arenaviridae and Bunyaviridae. These data support grouping these four viruses in the same genus, Ophiovirus, previously advanced on the basis of their similar virion morphology including TMMMV (Milne et al, 2000), and later FreSV (Vaira et al, 2011).…”

Section: The Analysis Of the Putative Rdrp -Taxonomical Relationship supporting

confidence: 86%

Ophioviruses: State of the Art

García¹

2012

Viral Genomes - Molecular Structure, Diversity, Gene Expression Mechanisms and Host-Virus Interactions

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Section: The Analysis Of the Putative Rdrp -Taxonomical Relationship supporting

confidence: 86%

Ophioviruses: State of the Art

García¹

2012

Viral Genomes - Molecular Structure, Diversity, Gene Expression Mechanisms and Host-Virus Interactions

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“…Citrus psorosis ophiovirus (CPV; genus Ophiovirus ; family Aspiviridae ) is a -ssRNA virus consisting of three genomic segments (8186, 1645, and 1447 nt in length, respectively) encapsidated in filamentous nucleocapsids (approximately 760 × 3–4 nm in size) [5]. CPV causes bark scaling lesions on the trunk and branches of sweet orange, mandarin, and grapefruit after the infected citrus trees are grown for 3–7 years or longer [5].…”

Section: Viruses Infecting Fruit Treesmentioning

confidence: 99%

Genomic, Morphological and Biological Traits of the Viruses Infecting Major Fruit Trees

Umer

Liu

You

et al. 2019

Viruses

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Banana trees, citrus fruit trees, pome fruit trees, grapevines, mango trees, and stone fruit trees are major fruit trees cultured worldwide and correspond to nearly 90% of the global production of woody fruit trees. In light of the above, the present manuscript summarizes the viruses that infect the major fruit trees, including their taxonomy and morphology, and highlights selected viruses that significantly affect fruit production, including their genomic and biological features. The results showed that a total of 163 viruses, belonging to 45 genera classified into 23 families have been reported to infect the major woody fruit trees. It is clear that there is higher accumulation of viruses in grapevine (80/163) compared to the other fruit trees (each corresponding to less than 35/163), while only one virus species has been reported infecting mango. Most of the viruses (over 70%) infecting woody fruit trees are positive-sense single-stranded RNA (+ssRNA), and the remainder belong to the -ssRNA, ssRNA-RT, dsRNA, ssDNA and dsDNA-RT groups (each corresponding to less than 8%). Most of the viruses are icosahedral or isometric (79/163), and their diameter ranges from 16 to 80 nm with the majority being 25–30 nm. Cross-infection has occurred in a high frequency among pome and stone fruit trees, whereas no or little cross-infection has occurred among banana, citrus and grapevine. The viruses infecting woody fruit trees are mostly transmitted by vegetative propagation, grafting, and root grafting in orchards and are usually vectored by mealybug, soft scale, aphids, mites or thrips. These viruses cause adverse effects in their fruit tree hosts, inducing a wide range of symptoms and significant damage, such as reduced yield, quality, vigor and longevity.

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“…The causal agent of psorosis is Citrus psorosis virus (CPsV), type member of the genus Ophiovirus, family Ophioviridae (García et al 1994;Milne et al 2000;Moreno et al 2015). CPsV is tripartite and its genome consists of three single-stranded RNAs (ssRNAs) of negative polarity.…”

Section: Introductionmentioning

confidence: 99%

Citrus psorosis virus coat protein-derived hairpin construct confers stable transgenic resistance in citrus against psorosis A and B syndromes

2016

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Citrus psorosis virus (CPsV) is the causal agent of psorosis, a serious and widespread citrus disease. Two syndromes of psorosis, PsA and PsB, have been described. PsB is the most aggressive and rampant form. Previously, we obtained Pineapple sweet orange plants transformed with a hairpin construct derived from the CPsV coat protein gene (ihpCP). Some of these plants were resistant to CPsV 90-1-1, a PsA isolate homologous to the transgene. In this study, we found that expression of the ihpCP transgene and siRNA production in lines ihpCP-10 and -15 were stable with time and propagation. In particular, line ihpCP-15 has been resistant for more than 2 years, even after re-inoculation. The ihpCP plants were also resistant against a heterologous CPsV isolate that causes severe PsB syndrome. Line ihpCP-15 manifested complete resistance while line ihpCP-10 was tolerant to the virus, although with variable behaviour, showing delay and attenuation in PsB symptoms. These lines are promising for a biotech product aimed at eradicating psorosis.

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Ophiovirus

Cited by 14 publications

References 24 publications

Ophioviruses: State of the Art

Ophioviruses: State of the Art

Genomic, Morphological and Biological Traits of the Viruses Infecting Major Fruit Trees

Citrus psorosis virus coat protein-derived hairpin construct confers stable transgenic resistance in citrus against psorosis A and B syndromes

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