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The degree of genetic diversity of 127 Colletotrichum gloeosporioides isolates from Stylosanthes guianensis genotypes in South America was measured at the molecular level by random amplified polymorphic DNA (RAPD) with nine arbitrary primers of 10 bases, and by restriction fragment length polymor...


Kelemu, SegenetSkinner, DZBadel, JLMoreno, CXRodríguez, M.X.Fernandes, C.D.Charchar, Maria JoséChakraborty, S.[Genetic diversity in South American Colletotrichum gloeosporioides isolates from Stylosanthes guianensis, a tropical forage legume]Genetic diversity in South American Colletotrichum gloeosporioides isolates from Stylosanthes guianensis, a tropical forage legume

Anthracnose, caused by Colletotrichum gloeosporioides, is the most important and widespread disease of Stylosanthes, a diverse tropical and subtropical forage legume naturally distributed in central and South America. This paper compares the genetic and pathogenic diversity of 45 isolates, which ...


Kelemu, SegenetBadel, JLMoreno, CXMiles, John W.Chakraborty, S.Fernandes, C.D.Charchar, Maria José[Biodiversity, epidemiology and virulence of Colletotrichum gloeosporioides. I. Genetic and pathogenic diversity in Colletotrichum gloeosporioides isolates from Stylosanthes guianensis]Biodiversity, epidemiology and virulence of Colletotrichum gloeosporioides. I. Genetic and pathogenic diversity in Colletotrichum gloeosporioides isolates from Stylosanthes guianensis

The enterobacterium Erwinia chrysanthemi causes soft-rot diseases involving extensive tissue maceration in a wide variety of plants and secretes multiple pectic enzymes that degrade plant cell walls and middle lamellae. An E. chrysanthemi mutant with directed deletions or insertions in genes pehX...


Kelemu, SegenetCollmer, A[Erwinia chrysanthemi EC16 produces a second set of plant-inducible pectate lyase isozymes]Erwinia chrysanthemi EC16 produces a second set of plant-inducible pectate lyase isozymes
Chakraborty, S.Cameron, DFBoland, RKelemu, SegenetFernandes, C.D.Charchar, Maria José[Risk of serious anthracnose damage to stylo cultivars]Risk of serious anthracnose damage to stylo cultivars

This study developed a fast and reliable method of inoculating Brachiaria, a genus of tropical forage grasses, with Rhizoctonia solani, the causal agent of foliar blight disease. Using this method, 42 Brachiaria accessions were inoculated in both field and glasshouse, and their reactions to R. so...


Kelemu, SegenetMiles, John W.Bonilla, Ximena P.Badel, JL[Sources of resistance in species of Brachiaria to foliar blight disease caused by Rhizoctonia solani]Sources of resistance in species of Brachiaria to foliar blight disease caused by Rhizoctonia solani
Zuleta, CKelemu, SegenetCardozo, O.[Identificación de fuentes de resistencia a Xanthomonas campestris en Brachiaria spp]Identificación de fuentes de resistencia a Xanthomonas campestris en Brachiaria spp

Los hongos endófitos son organismos inherentes a las plantas que establecen una asociación específica con su hospedero para mutuo beneficio. Existen sinnúmero de especies vegetales de importancia económica que interactúan con especies de hongos endófitos. La planta provee al hongo alimento, hospe...


Abello, J.F.Kelemu, Segenet[Hongos endófitos : Ventajas adaptativas que habitan en el interior de las plantas = Endophytic fungi : Adaptive advantages within plants]Hongos endófitos : Ventajas adaptativas que habitan en el interior de las plantas = Endophytic fungi : Adaptive advantages within plants

Stylosanthes guianensis is a diverse tropical and subtropical forage legume of great potential. Foliar blight disease, caused by Rhizoctonia solani AG-1, can be a significant constraint to the legume’s production in some areas. The pathogen has a broad range of host plant species, and can survive...


Kelemu, SegenetChangshun, JGuixi, HSegura, G.[Genetic transformation of the tropical forage legume Stylosanthes guianensis with a rice-chitinase gene confers resistance to Rhizoctonia foliar blight disease]Genetic transformation of the tropical forage legume Stylosanthes guianensis with a rice-chitinase gene confers resistance to Rhizoctonia foliar blight disease

Using molecular markers, this work compares the genetic diversity in Colletotrichum gloeosporioides infecting species of the tropical forage legume Stylosanthes at the center of origin in Brazil and Colombia with that of Australia, China, and India, where Stylosanthes spp. have been introduced fo...


Weeds, P.L.Chakraborty, S.Fernandes, C.D.Charchar, Maria JoséRamesh, CRKexian, YKelemu, Segenet[Genetic diversity in Colletotrichum gloeosporioides from Stylosanthes spp. at centers of origin and utilization]Genetic diversity in Colletotrichum gloeosporioides from Stylosanthes spp. at centers of origin and utilization

The intense debate over agricultural biotechnology is at once fascinating, confusing and disappointing. It is complicated by issues of ethical, moral, socio-economic, political, philosophical and scientific import. Its vocal champions exaggerate their claims of biotechnology as saviour of the poo...


Kelemu, SegenetMahuku, George S.Fregene, Martin A.Pachico, Douglas H.Johnson, Nancy L.Calvert, Lee A.Rao, Idupulapati M.Buruchara, Robin A.Amede, TilahunKimani, P.M.Kirkby, Roger A.Kaaria, Susan K.Ampofo, James Kwasi O.[Harmonizing the agricultural biotechnology debate for the benefit of African farmers]Harmonizing the agricultural biotechnology debate for the benefit of African farmers

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