<b>The occurrence of bean common mosaic necrosis virus in wild and forage legumes in Uganda</b>

Sengooba, T.; Spence, Nicola; Walkey, D. G. A.; Allen, David J.; Lana, Allan Femi

doi:10.1046/j.1365-3059.1997.d01-12.x

Cited by 46 publications

(24 citation statements)

References 15 publications

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“…Both viruses are seedborne and transmitted by several aphid species in a non-persistent manner (Drijfhout, 1978). These viruses have been reported in common bean in many parts of the world including Europe (Drijfhout, 1978;Sáiz et al, 1995), U.S. (Kelly et al, 1983;Provvidenti et al, 1984), Canada (Tu, 1986), Mexico (Flores-Estévez et al, 2003) and Africa (Silbernagel et al, 1986;Spence & Walkey, 1995;Sengooba et al, 1997;Njau & Lyimo, 2000). BCMNV likely evolved more recently in the African continent (Spence & Walkey, 1995) and recombination has been observed between strains of BCMV and BCMNV (Silbernagel et al, 2001).…”

Section: Introductionmentioning

confidence: 93%

“…Among the methods available to prevent virus infection in common bean, genetic resistance is the most cost effective and durable (Drijfhout, 1978;Kelly et al, 1995;Miklas et al, 2000). In East Africa where BCMNV is found in wild legumes (Sengooba et al, 1997;Spence & Walkey, 1995), the only effective way to control these viruses is to plant resistant cultivars, otherwise susceptible bean plants can become infected from alternate hosts, growing adjacent to bean fields .…”

Section: Introductionmentioning

confidence: 99%

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Markers linked to the bc-3 gene conditioning resistance to bean common mosaic potyviruses in common bean

et al. 2005

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SummaryNecrotic strains of bean common mosaic potyviruses are becoming increasingly problematic in bean growing areas of Africa and Europe. Pyramiding epistatic resistance genes provides the most effective long-term strategy for disease control against all known strains of the virus. Indirect selection using tightly linked markers should facilitate the breeding of desired epistatic resistance gene combinations. In common bean, the most effective strategy for broad spectrum control of the bean common mosaic potyviruses is to combine I and bc-3 genes. We describe the use of near-isogenic lines and segregating populations from different gene pools combined with bulked segregant analysis to identify markers tightly linked with the recessive bc-3 gene that conditions resistance to all strains of bean common mosaic necrosis virus. We identified a RAPD marker, OG6 595 , linked at 3.7 cM from the bc-3, and the marker was used to confirm the location of bc-3 gene on bean linkage group B6. A codominant AFLP marker, E ACA M CGG -169/172 was identified and linked at 3.5 cM from the bc-3 and the AFLP and OG6 595 markers flanked the bc-3 gene. The AFLP marker was converted to the STS marker SE ACA M CGG -134/137 which showed co-segregation with the original AFLP marker. The 134 bp fragment associated with resistance was linked with the bc-3 gene present in a diverse group of bean genotypes except in two kidney bean lines. The OG6 595 marker mapped on B6 supported independence of bc-3 from the I gene located on B2, which provides the opportunity to readily combine both genes in a single bean cultivar for broad spectrum resistance to bean common mosaic potyviruses.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Markers linked to the bc-3 gene conditioning resistance to bean common mosaic potyviruses in common bean

et al. 2005

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“…Njau and Lyimo (2000) showed that these viruses were systemic in four of the six infected plants. In Uganda, Sengooba et al (1997) (Spence and Walkey, 1995;Worrall et al, 2015).…”

Section: Alternative Hosts Of Bcmv and Bcmnvmentioning

confidence: 99%

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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“…The presence of BCMV in India was reported in 1963 by Yaraguntaiah and Nariani (1963) and Nagaich and Vashisht (1963). The virus, however, has not been studied systematically in India as compared to Latin America, Africa, Europe and USA (Morales and Bos, CMI/AAB Descriptions of Plant Viruses; Mckern et al 1992;Kelly 1997;Mavric and Vozlic 2004) where both BCMV and BCMNV have been reported to occur (Spence and Walkey 1995;Sengooba et al 1997;Silbernagel et al 2001). In India, most of the work on BCMV has been conducted in Himachal Pradesh, a North-western Himalayan state, where evaluations of over 100 virus isolates (unpublished data) have only revealed the presence of BCMV (Sharma et al 1999;Sharma 2000;Kapil et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Resistance to bean common mosaic potyvirus strains and its inheritance in some Indian land races of common bean

et al. 2008

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Evaluation of 397 common bean accessions of diverse origin revealed the presence of eVective sources of resistance against bean common mosaic potyvirus strains prevalent in Himachal Pradesh, a north-western Himalayan state of India. 21 accessions viz., KR 7, KR 225, KR 295, KRC 4, KRC 7, KRC 11, KRC 12, KRC 13, KRC 16, KRC 22, Amanda, Black Turtle Soup, Contender, Hans, Great Northern UI 123, Improved Tender Green 40031, Jubila, Kentucky wonder, Monroe, Premier and Sanilac, were found resistant to NL-1n and NL-7n strains. Some of the genotypes showed strain speciWc resistance. Pattern of inheritance studied in Hans, Contender, KRC 4 and KRC 22 of Indian origin against strain NL-1n revealed that single dominant gene governed the resistance in Hans and Contender whereas single recessive gene determined the resistance in KRC 22 and KRC 4. SCAR marker SW13 690 ampliWed a product of 690 bp in Hans and Contender, conWrmed the presence of I gene in these cultivars. The implications of above genes in breeding for programme for BCMV resistance are discussed.

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The occurrence of bean common mosaic necrosis virus in wild and forage legumes in Uganda

Cited by 46 publications

References 15 publications

Markers linked to the bc-3 gene conditioning resistance to bean common mosaic potyviruses in common bean

Markers linked to the bc-3 gene conditioning resistance to bean common mosaic potyviruses in common bean

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

Resistance to bean common mosaic potyvirus strains and its inheritance in some Indian land races of common bean

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