Consumer preferences for cooking-related traits are a deciding factor in the success of new cowpea [Vigna unguiculata (L.) Walp] cultivars. Pigment leaching is an undesirable trait both consumers and producers alike that occurs during cooking or canning process has been goal improvement efforts through breeding. This study leverages power bulked segregant analysis to identify locus segregating ...

Xylella fastidiosa subsp. fastidiosa (Xff) is the causal agent of Pierce's Disease (PD) of grapevines and is vectored by the glassy-winged sharpshooter (GWSS, Homalodisca vitripennis). Previously we have reported the development of a bacteriophage (phage) based biocontrol system for PD, but no information on insect transmission of phages has been reported. Here we communicate that laboratory re...

Dehydrins are a family of proteins (LEA [late-embryogenesis abundant] D11) commonly induced by environmental stresses associated with low temperature or dehydration and during seed maturation drying. Our previous genetic studies suggested an association of an approximately 35-kD protein (by immunological evidence a dehydrin) with chilling tolerance during emergence of seedlings of cowpea (Vigna...

The strain BR 3351T (Bradyrhizobium manausense) was obtained from nodules of cowpea (Vigna unguiculata L. Walp) growing in soil collected from Amazon rainforest. Furthermore, it was observed that the strain has high capacity to fix nitrogen symbiotically in symbioses with cowpea. We report here the draft genome sequence of strain BR 3351T. The information presented will be important for compara...

* Corresponding author A protease inhibitor gene has been isolated from native cowpea (Vigna unguiculata L.) cv. 130 from λ-ZAP II genomic library. The nucleotide sequence of this genomic clone shared 86% homology with a cowpea trypsin inhibitor f IV mRNA, and 81% with BowmanBirk protease inhibitor genes of soybean. The isolated gene had TATA and CAT signals in the 5' upstream region. The longe...

Inoculation with Azospirillum brasilense Cd of two leguminous species, soybean (Glycine max) and cowpea (Vigna unguiculata), demonstrated that: (1) A. brasilense significantly increased proton efflux from their roots; (2) inoculation reduced plant membrane potential (in soybean), (3) inoculation changed the phospholipid quantity in plant membranes of calli (in cowpea), and (4) a low molecular w...

Bean/Cowpea Collaborative Research Support Program (B/C CRSP) scientists have successfully developed integrated consensus maps of the 11 linkage groups (LGs) in both bean (Phaseolus vulgaris L.) and cowpea (Vigna unguiculata L. Walp). The bean map is approximately 1200 cM with some 500 markers and an additional 500 markers shared with other bean maps. The cowpea map spans 2670 cM with over 400 ...

Cowpea (Vigna unguiculata L. Walp.) is an important leguminous crop largely grown by smallholder farmers in Niger for food security. Field trials were carried out during the 2019 rainy season Dangali and Dan Bouzou, villages of Mayahi, department Maradi region, Republic, to determine effect organic manure on cowpea productivity using […]

We have confirmed here that the seeds of the common bean (Phaseolus vulgaris, L.) do not support development of the bruchid Callosobruchus maculatus (F.), a pest of cowpea [Vigna unguiculata (L.) Walp] seeds. Analysis of the testa (seed coat) of the bean suggested that neither thickness nor the levels of compounds such as tannic acid, tannins, or HCN are important for the resistance. On the oth...