Resultados de búsqueda - Genes Africa.

Genetic diversity in an African plantain core collection using AFLP and RAPD markers por Ude, G., Pillay, M., Ogundiwin, E., Tenkouano, A.

“…Fifteen AFLP primer pairs (EcoRI+3 and MseI+3) and 60 10-mer RAPD primers were used to detect polymorphisms and assess genetic relationships in a sample of 25 plantains from diverse parts of Western and Central Africa. The discriminatory power of the AFLP technique was greater than that of the RAPD technique, since the former produced markers with greater polymorphic information content (PIC) than the latter. …”
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Biofortification to avoid malnutrition in humans in a changing climate: Enhancing micronutrient bioavailability in seed, tuber, and storage roots por Dwivedi, Sangam, García Oliveira, Ana Luísa, Govindaraj, Mahalingam, Ortíz, Rodomiro

“…Approximately 4.6 million households currently cultivate Zn-rich rice and wheat, while ~3 million households in sub-Saharan Africa and Latin America benefit from Fe-rich beans, and 2.6 million people in sub-Saharan Africa and Brazil eat provitamin A-rich cassava. …”
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Production of the light-activated elsinochrome phytotoxin in the soybean pathogen Coniothyrium glycines hints at virulence factor por Greatens, N., Murithi, H., Coyne, D., Clough, S.J., Sulyok, M., Okunowo, W.O., Abbass, H.K., Shier, W.T., Koch Bach, R.A.

“…Light-grown cultures produced red-pink pigmentation typical of perylenequinones. Differential gene expression analysis showed that six of the eight genes in the biosynthetic gene cluster, including the polyketide synthase gene, were significantly upregulated in light. …”
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Genotypic variations in field isolates of Theileria species infecting giraffes (Giraffa camelopardalis tippelskirchi and Giraffa camelopardalis reticulata) in Kenya por Githaka, Naftaly W., Konnai, S., Skilton, Robert A., Kariuki, E., Kanduma, Esther G., Murata, S., Ohashi, K.

“…Phylogeny with 18S rRNA gene sequences from the detected parasites and those of related organisms places Theileria of giraffes into two major groups, within which are numerous clades that include the isolates reported in South Africa. …”
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Late Pleistocene molecular dating of past population fragmentation and demographic changes in African rain forest tree species supports the forest refuge hypothesis por Duminil, J., Mona, S., Mardulyn, P., Doumenge, C., Walmacq, F., Doucet, J.L., Hardy, Olivier J.

“…We assess the timing of interspecific and intraspecific genetic differentiation and demographic changes within two rain forest Erythrophleum tree species (Fabaceae: Caesalpinioideae).Tropical forests of Upper Guinea (West Africa) and Lower Guinea (Atlantic Central Africa).Six single‐copy nuclear genes were used to characterize the phylogeographical patterns of the parapatric sister species Erythrophleum suaveolens (characteristic of semi‐deciduous or gallery forests) and Erythrophleum ivorense (characteristic of evergreen forests). …”
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Broad-spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice por Bossa Castro, Ana M., Tekete, Cheick, Raghavan, Chitra, Delorean, Emily E., Dereeper, Alexis, Verdier, Valerie M., Dagno, Karim, Koita, Ousmane, Mosquera Cifuentes, Gloria Maria, Leung, Hei, Leach, Jan E.

“…Bacterial leaf streak (BLS) and bacterial blight (BB), caused by Xanthomonas oryzae pv. oryzicola (Xoc) and Xanthomonas oryzae pv. oryzae (Xoo), respectively, are responsible for major losses in rice production in Asia and Africa. Controlling these two diseases is particularly important in Sub-Saharan Africa, where no sources of BSR are available in currently deployed varieties. …”
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Isolation and characterization of bacteriophages with lytic activity against multidrug-resistant non-typhoidal Salmonella from Nairobi City county, Kenya por Mugo, M., Musyoki, A., Makumi, Angela, Mutai, I., Kering, K., Muturi, P., Kebenei, C., Weber, K., Pietsch, M., Pilz, T., Drechsel, O., Hoffmann, T., Wieler, L., Mbae, C., Flieger, A., Kariuki, S.

“…Background: Non-typhoidal <i>Salmonella</i> (NTS) typically cause self-limiting enterocolitis, but can lead to life-threatening invasive diseases, particularly in sub-Saharan Africa. In Kenya, multidrug-resistant (MDR) NTS strains with increasing non-susceptibility to third-generation cephalosporins pose a growing public health threat. …”
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Using diversity of Ethiopian durum wheat to challenge climate change: a three pronged approach por Kassahum, D., Kidane, Y., Mancini, C., Fadda, Carlo, Pe’, M.E., Bioversity International

“…Current climate change projection models show that both temperature and precipitation are expected to increase in the Horn of Africa, and that climate uncertainty and frequency of extreme events will most likely increase the vulnerability of the rural poor in the region, Ethiopia included. …”
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Variation and Phenotypic Evaluation of Intraspecific Oryza glaberrima Lines Resulting from Crossings between Tog5681, Tog5672 and Tog7291 por Agnoun, Y., Ahounou, E., Sié, M., Ogunbayo, S.A., Toulou, B., Futakuchi, K., Ahanchédé, A.

“…Rice cultivation in Africa suffers from various biotic and abiotic constraints. …”
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Characterization of wheat yellow rust and stem rust virulence in Southern Spain por Rodríguez-Vázquez, Jaime Nolasco, Ammar, Karim, Solís, Ignacio, Martínez-Moreno, Fernando

“…Even though stem rust is not yet present during the regular cropping season, the main lineages/races Clade IV-B and Clade IV-F, were identified, much like in most of Europe and parts of North Africa. The evaluation of differential series and special breeding lines with known genes under local conditions has indicated the availability of several genetic options that could be used in breeding/selection programs to provide effective levels of resistance to either disease in the future. …”
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Studies of colletotrichum species causing cowpea anthracnose in Nigeria reveal two first-time reports globally por Dada, A. O., Dania, V. O., Oyatomi, O., Abberton, M., Ortega-Beltran, A

“…Walp.) is an important multipurpose crop in various countries in sub-Saharan Africa. However, cowpea production is affected by cowpea anthracnose disease (CAD). …”
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Cowpea por Boukar, O., Fatokun, C.A., Roberts, P.A., Abberton, Michael T., Huynh, B., Close, T.J., Kyei-Boahen, S., Higgins, T.J.V., Ehlers, J.D.

“…Cowpea, *Vigna unguiculata,* is an important grain legume adapted to the sub-Saharan Africa (SSA) where it contributes to the nutrition, health, and income of rural and suburban inhabitants. …”
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Banana and plantain por Tripathi, L., Tripathi, J.N., Tenkouano, A., Bramel-Cox, P.J.

“…They are major staple food and source of income for millions of people in tropical and subtropical regions; particularly in Africa, an area where the green revolution has had little influence. …”
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Diallel analysis of cassava genotypes to anthracnose disease por Owolade, F., Dixon, A., Adeoti, A.

“…Cassava anthracnose disease (CAD) caused by Colletotrichum gloeosporioides f. sp manihotis has been recognized as one of the major economic disease of cassava in all the cassava growing regions of Africa. Little information is available on the resistance of cassava to C. …”
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Path analysis and ideotypes for plantain breeding por Ortíz, R., Langie, H.

“…Plantains (Musa spp., AAB group) are an important food crop in the humid lowlands of sub-Saharan Africa. Understanding the relationships between growth characteristics and yield potential (t ha-1 yr-1) would be useful in developing an ideotype to guide breeding efforts for this crop. …”
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Occurrence of antibiotic resistant Staphylococcus aureus in pigs in smallholder farms in Lira, Uganda por Dahlin, Lisa

“…In Europe, several studies on the occurrence of MRSA in pigs are performed, but in Africa the studies are very few and in Uganda almost non-existent. …”

Introgression of maize lethal necrosis resistance quantitative trait loci into susceptible maize populations and validation of the resistance under field conditions in Naivasha, Ke... por Awata, L.A.O., Ifie, B.E., Danquah, E., Jumbo, M.B., Suresh, L.M., Gowda, M., Marchelo-Dragga, Philip W., Olsen, M.S., Shorinola, Oluwaseyi, Yao, Nasser, Boddupalli, P.M., Tongoona, P.B.

“…Maize lethal necrosis (MLN), resulting from co-infection by maize chlorotic mottle virus (MCMV) and sugarcane mosaic virus (SCMV) can cause up to 100% yield losses in maize in Africa under serious disease conditions. Maize improvement through conventional backcross (BC) takes many generations but can significantly be shortened when molecular tools are utilized in the breeding process. …”
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Fully phased population-prevalent East African cattle BoLA-I alleles determined using PacBio HiFi long-read sequencing represent five novel specificities with distinctive peptide b... por Obara, I., Sandro, A., Elati, K., Conneley, T., Nielsen, M., Githaka, Naftaly W., Nanteza, A., Bishop, Richard P., Nijhof, A.

“…Due to factors such as lower biosecurity, greater wildlife/farm animal interfaces, and environmental challenges, cattle in sub-Saharan Africa are exposed to more diverse and intensive bacterial, viral and protozoan pathogen challenges than cattle in Europe and other high-income regions of the world. …”
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Feed the Future Innovation Lab for Genomics to Improve Poultry: a holistic approach to improve indigenous chicken production focusing on resilience to Newcastle disease por Zhou, Huaijun, Baltenweck, Isabelle, Dekkers, J., Gallardo, R., Kayang, B.B., Kelly, T., Msoffe, P.L.M., Muhairwa, A., Mushi, J., Naaziee, A., Otsyina, H.R., Ouma, Emily A., Lamont, S.J.

“…Small-scale poultry production in Africa plays a significant role in alleviating malnutrition and poverty in rural communities. …”
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Banana weevil resistance and corn hardness in Musa germplasm por Ortíz, R., Vuylsteke, D.R., Dumpe, B., Ferris, R.S.B.

“…Banana weevil (Cosmopolites sordidus Germar) is a major limiting factor in the cultivation of plantains and bananas (Musa spp. L.) in sub-Saharan Africa. The larvae damage the crop by tunneling in the corm. …”
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