First Report of Cowpea Mild Mottle Carlavirus on Yardlong Bean (Vigna unguiculata subsp. sesquipedalis) in Venezuela

Brito, Miriam; Fernández-Rodríguez, Thaly; Garrido, Mario; Mejías, Alexander; Romano, Mirtha; Marys, Edgloris

doi:10.3390/v4123804

Cited by 30 publications

(22 citation statements)

References 13 publications

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“…The aphid vectors take a very short time to transmit these viruses to plants such that application of insecticides is not effective. The same is true for the nonpersistently whitefly transmitted CPMMV (Brito et al, 2012), which has been detected in common bean in Tanzania (Mink and Keswani, 1987;Vetten and Allen, 1991). Conversely, pesticide use may prevent or reduce infection by persistently transmitted viruses.…”

Section: Control Of Vectorsmentioning

confidence: 70%

Viruses infecting common bean (Phaseolus vulgaris L.) in Tanzania: A review on molecular characterization, detection and disease management options

Mwaipopo¹,

Nchimbi‐Msolla²,

Njau³

et al. 2017

Afr. J. Agric. Res.

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Common bean (Phaseolus vulgaris L.) is a major legume crop, serving as a main source of dietary protein and calories and generating income for many Tanzanians. It is produced in nearly all agroecological zones of Tanzania. However, the average yields are low (<1000 kg/ha), which is attributed to many factors including virus diseases. The most important viruses of common bean in Tanzania are Bean common mosaic virus (BCMV) and Bean common mosaic necrosis virus (BCMNV) but other viruses have also been reported. There has never been a review of common bean virus diseases in the country, and the lack of collated information makes their management difficult. Therefore, this review focuses on (1) occurrence of different viruses of common bean in Tanzania, (2) molecular characterization of these viruses, (3) detection tools for common bean viruses in Tanzania and (4) available options for managing virus diseases in the country. Literature and nucleotide sequence database searches revealed that common bean diseases are inadequately studied and that their causal viruses have not been adequately characterized at the molecular level in Tanzania. Increased awareness on common bean virus diseases in Tanzania is expected to result into informed development of strategies for management of the same and thus increased production, which in turn has implication on nutrition and income.

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Section: Control Of Vectorsmentioning

confidence: 70%

Viruses infecting common bean (Phaseolus vulgaris L.) in Tanzania: A review on molecular characterization, detection and disease management options

Mwaipopo¹,

Nchimbi‐Msolla²,

Njau³

et al. 2017

Afr. J. Agric. Res.

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“…These particles form aggregates in the form of sheets or bundles and often brush-like inclusions (Brunt et al, 1983;Almeida et al, 2003Almeida et al, , 2005. CPMMV is transmitted in a nonpersistent manner by the whitefly Bemisia tabaci (Munyappa & Reddy, 1983;Jeyanandarajah & Brunt, 1993;Naidu et al, 1998;Almeida et al, 2005;Marubayashi et al, 2010;Brito et al, 2012). Seed transmission appears to be dependent on the viral isolate: for a Ghana isolate of CPMMV, seed transmission occurred in soybean, cowpea and with lower frequency in common bean (Brunt & Kenten, 1973); in Venezuela it was demonstrated that CPMMV can be transmitted by yardlong bean seeds (Brito et al, 2012), but Almeida et al (2005) reported that a Brazilian CPMMV isolate was not transmitted by soybean seeds.…”

Section: Introductionmentioning

confidence: 99%

Molecular and biological characterization of Cowpea mild mottle virus isolates infecting soybean in Brazil and evidence of recombination

Zanardo¹,

Silva²,

Bicalho³

et al. 2013

Plant Pathology

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The biological and molecular characterization of six isolates of a new Cowpea mild mottle virus strain (CPMMV; Carlavirus, Betaflexiviridae) are reported. Soybean plants with mosaic and stem necrosis were collected in Bahia, Goi as, Mato Grosso and Minas Gerais states, Brazil. Complete genomes of the CPMMV isolates are 8180-8198 nucleotides (nt) long, excluding the 3′-polyadenylated tail, and have 67-68% nt sequence identity with a Ghana isolate of CPMMV, the only CPMMV isolate for which the genome has previously been sequenced. The replicase has only 60-61% nt sequence identity with the Ghana CPMMV isolate, and the coat protein (CP) is highly conserved (79% nt sequence identity and 95-96% amino acid sequence identity). The high CP identity and the phylogenetic analyses supported the classification of the Brazilian isolates as CPMMV. Biological and molecular differences with the Ghana CPMMV isolate were found and indicated that the six isolates represent a distinct CPMMV strain denominated as CPMMV-BR. Furthermore, it is shown that recombination occurred mainly in the polymerase gene, and may occur less frequently in other regions of the CPMMV genome.

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“…The seed-borne virus transmission can also be an important component of the epidemiology of the disease in the field. It has already been reported that different isolates of CPMMV can be seed transmitted, as observed for cowpea, soybean and common bean seeds in Ghana (Brunt & Kenten, 1973) and yardlong bean seeds in Venezuela (Brito et al, 2012). In Thailand, the virus was observed to be transmitted by soybean seeds at a frequency lower than 1% (Iwaki et al, 1982) but in India, the seed-borne nature of the virus was detected in several soybean cultivars with higher rates of transmission, ranging from 0.62% to 14.2% (Yadav et al, 2013).…”

Section: Discussionmentioning

confidence: 91%

Effects of cowpea mild mottle virus on soybean cultivars in Brazil

Silva

Müller²,

Bello

et al. 2020

PeerJ

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Soybean stem necrosis is caused by cowpea mild mottle virus (CPMMV), transmitted by the whitefly Bemisia tabaci. CPMMV has already been recorded in all major soybean-producing areas of Brazil. The impacts caused by CPMMV to the current Brazilian soybean production are unknown, thus the main objective of this study was to evaluate the effects of CPMMV infection on the main important soybean cultivars grown in the Southern and Midwestern regions of Brazil. Although asymptomatic in some of the tested cultivars, CPMMV infection significantly reduced the plant height, the number of pods per plant and the 1,000-grain weight. In addition, estimated yield losses ranged from 174 to 638 kg ha−1, depending on the cultivar. Evidence of seed transmission of CPMMV was observed in the BMX POTÊNCIA RR cultivar. These results suggest that CPMMV could have an important role in the reduction of soybean productivity in Brazil, but symptomless infections might be hiding the actual impact of this pathogen in commercial fields and infected seeds could be the primary inoculum source of the virus in the field.

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First Report of Cowpea Mild Mottle Carlavirus on Yardlong Bean (Vigna unguiculata subsp. sesquipedalis) in Venezuela

Cited by 30 publications

References 13 publications

Viruses infecting common bean (Phaseolus vulgaris L.) in Tanzania: A review on molecular characterization, detection and disease management options

Viruses infecting common bean (Phaseolus vulgaris L.) in Tanzania: A review on molecular characterization, detection and disease management options

Molecular and biological characterization of Cowpea mild mottle virus isolates infecting soybean in Brazil and evidence of recombination

Effects of cowpea mild mottle virus on soybean cultivars in Brazil

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