Virus diseases of cowpea in tropical Africa

Thottappilly, G.; Rossel, H. W.

doi:10.1080/09670879209371724

Cited by 49 publications

(39 citation statements)

References 40 publications

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“…Cowpea is susceptible to a number of fungal, bacterial, and viral diseases. The effects of viruses can be devastating and are a major constraint to the production of cowpea (Thottappilly and Rossel, 1992).…”

Section: Introductionmentioning

confidence: 99%

“…Viral diseases can cause severe damage to cowpea crops. Cucumber mosaic virus (CMV) genus Cucumovirus has shown to be highly seed borne in many cowpea varieties (Thottappilly and Rossel, 1988).…”

Section: Introductionmentioning

confidence: 99%

“…Cowpea aphid borne mosaic virus (CABMV), genus Potyvirus, is seed borne in cowpea at a rate 0-40% (Thottappilly and Rossel, 1988), but seed transmission depends on the virus strain and cowpea cultivar (Ladipo, 1977;Aboul Ata et al, 1982). It has since been found in all ecological zones in Nigeria, where it is considered the most widespread and most important viral disease of cowpea (Thottappilly and Rossel 1992;Shoyinka et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

“…According to the report of a three-year survey conducted by Shoyinka et al (1997), CYMV ranked next to CABMV in importance in Nigeria. The incidences were 27.1, 5.2 and 19.9%; and the prevalences were 63.9, 19.0 and 40.9% for 1991, 1992, and 1993, respectively. Southern bean mosaic virus (SBMV) genus Sobemovirus is seed borne at rates of 3 -4% (Thottappilly and Rossel, 1988). In a three-year survey conducted in Nigeria between 1991 and 1993, SBMV had the highest incidence (27.4%) and prevalence (66.7%).…”

Section: Introductionmentioning

confidence: 99%

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Serological detection of seed borne viruses in cowpea regenerated germplasm using protein a sandwich enzyme linked immunorsorbent assay

Ojuederie¹,

Odu²,

Ilori³

2010

African Crop Science Journal

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Cowpea (Vigna unguiculata (L.) Walp) is susceptible to a number of fungal, bacterial and viral diseases. The effects of viruses can be devastating and are a major constraint to the production of cowpea. A study was carried out to detect the presence of seed borne viruses in fourteen cowpea accessions screened from 300 regenerated cowpea germplasm from the genebank collection of the International Institute of Tropical Agriculture (IITA) in Nigeria. Protein A Sandwich Enzyme linked Immunosorbent Assay (PAS ELISA) was used to detect seed borne viruses in the accessions. Out of 36 accessions of TVu 2033 indexed, 31 were infected with Cowpea aphid-borne mosaic virus genus Potyvirus, which is of great economic importance in germplasm conservation and exchange between countries as it causes great loss. Southern bean mosaic virus was not detected in any of the accessions evaluated. Seeds were harvested from the infected mother plants at maturity and the embryos excised in vitro onto hormone free medium composed of 4.43 g MS basal salt, 30 g sucrose and 8 g of agar. The seedlings obtained were serologically indexed to detect any seed-borne viruses after acclimatisation to screen house conditions. The seedlings obtained from excised embryos got from harvested seeds gave a negative ELISA result.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Serological detection of seed borne viruses in cowpea regenerated germplasm using protein a sandwich enzyme linked immunorsorbent assay

Ojuederie¹,

Odu²,

Ilori³

2010

African Crop Science Journal

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“…Cowpea Aphid-Borne Mosaic Virus (CABMV) is by far considered as the most important viral disease of cowpea in Burkina Faso (Neya et al, 2007). The CABMV is responsible of important crop losses ranging from 15-87% depending on cowpea varieties and the plant age at infection (Aboul Ata et al, 1982;Thottappilly and Rossel, 1992). The virus is readily transmitted by mechanical inoculation and through seeds.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Yield Losses Caused by Cowpea Aphid-borne mosaic virus (CABMV) in 21 Cowpea (Vigna unguiculata (L.) Walp.) Varieties in Burkina Faso

Néya¹,

Zida²,

Sérémé³

et al. 2015

Pakistan J. of Biological Sciences

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02/08 Fax : (226) 25 31 92 75 A B S T R A C T Cowpea (Vigna unguiculata (L.) Walp.) is one the main leguminous crop plants world wide, particularly in sub-Saharan Africa where the rainfall is low and often unevenly distributed. However, its production is limited by insect attacks and numerous diseases including those caused by viruses. In Burkina Faso, the Cowpea Aphid-Borne Mosaic Virus (CABMV) is one of the viruses capable of causing 7-60% of yield losses. The aim of this study is to assess the susceptibility of 21 cowpea varieties against CABMV and to also assess the yield losses caused by this virus on each of the varieties. In this context trial was conducted on INERA research stations at Kamboinsé and Farako-Bâ in 2012 and 2013. Twenty one varieties were used for this study. The experimental design used is a split-plot with 4 repetitions for which the first 2 repetitions were inoculated with the CABMV. Symptoms caused by the CABMV on the 21 varieties of cowpea were of a great diversity. The assessment of the virus in infected plant samples from these varieties by ELISA test allowed detecting the mosaic virus in all samples that presented mosaic symptoms. The number of flowers and pods strongly varied depending to the type of plant (inoculated or non-inoculated plant) and the variety. Yields from the different varieties, comprised between 187 and 6250 kg haG 1 , were influenced by the site, the year, the variety and the type of plant. Yields losses were ranged from 3-64% depending to the variety.

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Cowpea

Murdock

Coulibaly

Higgins

et al. 2008

Compendium of Transgenic Crop Plants

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Cowpea ( Vigna unguiculata var. unguiculata ) ((L.) Walp.), a crop native to Africa, is the most important legume grown on the continent, at least in terms of economics. It is a highly nutritious crop, consumed in many forms, including seeds as well as foliage; it provides excellent fodder for livestock as well. Well‐adapted to the semi‐arid tropics, it thrives even on relatively poor soils and low rainfall. Numerous viruses and diseases attack cowpea, but the limiting constraint is insects. Cowpea breeders have had some success in improving cowpea for insect resistance using methods described here, but certain insect pests, including the legume pod borer ( Maruca vitrata ), thrips and pod‐sucking bugs, have proven impervious to conventional breeding to improve resistance. Recently a methodology for genetically transforming cowpea has been developed and is being used to introduce Bt genes into cowpea for resistance against the legume pod borer. The transformation methodology is described, and there is given an overview of biosafety‐related and regulatory matters related to the introduction of Bt cowpea into Africa.

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Virus diseases of cowpea in tropical Africa

Cited by 49 publications

References 40 publications

Serological detection of seed borne viruses in cowpea regenerated germplasm using protein a sandwich enzyme linked immunorsorbent assay

Serological detection of seed borne viruses in cowpea regenerated germplasm using protein a sandwich enzyme linked immunorsorbent assay

Evaluation of Yield Losses Caused by Cowpea Aphid-borne mosaic virus (CABMV) in 21 Cowpea (Vigna unguiculata (L.) Walp.) Varieties in Burkina Faso

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