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Brachiaria species are widely sown on the infertile and Al-toxic soils of neotropical savannas. Breeding programs seek to combine edaphic adaptation with other traits in interspecific hybrids. Edaphic adaptation is difficult to assess because it is only manifest in pasture persistence across seve...


Wenzl, PeterArango Vélez, AdrianaChavez, Alba L.Buitrago González, M.E.Patino, GMMiles, John W.Rao, Idupulapati M.[A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor]A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor

Aluminum‐resistant Brachiaria decumbens Stapf cv. Basilisk (signalgrass) and closely related, but less resistant Brachiaria ruziziensis Germain & Evrard cv. Common (ruzigrass) both accumulated high concentrations of aluminum (Al) in roots. Approximately two thirds of the total Al was complexed by...


Wenzl, PeterChavez, Alba L.Patiño, Gloria M.Mayer, Jorge EdgardRao, Idupulapati M.[Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species]Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species

Technological advances allow us to tap into genetic resources to address food and nutritional security in the face of population growth, urbanization, climate change, and environmental degradation. It is vital, particularly for developing countries, to ensure that the policy framework regulating ...


Roa, CarolinaHamilton, Ruaraidh S.Wenzl, PeterPowell, Wayne[Plant genetic resources: needs, rights, and opportunities]Plant genetic resources: needs, rights, and opportunities

Aluminum is usually regarded as the determining factor for plant growth in acid soils and nutrient deficiencies are often additional growth-limiting factors in tropical acid soils. Taking into account the potential interactions between Al toxicity and nutrient deficiencies, the present study inve...


Akhter, AKhan, S.H.Hiroaki, ETawaraya, KRao, Idupulapati M.Wenzl, PeterIshikawa, S.Wagatsuma, Tadao[Greater contribution of low-nutrient tolerance to sorghum and maize growth under combined stress conditions with high aluminum and low nutrients in solution culture simulating the nutrient status of tropical acid soils]Greater contribution of low-nutrient tolerance to sorghum and maize growth under combined stress conditions with high aluminum and low nutrients in solution culture simulating the nutrient status of tropical acid soils

The phosphorus (P) content of whole roots and root apices has been reported to increase under aluminum (Al) stress, particularly in Al-sensitive plant varieties. We investigated the impact of Al toxicity on the P content of root apices of two tropical forage cultivars of the Brachiaria genus, gro...


Wenzl, PeterMayer, Jorge EdgardRao, Idupulapati M.[Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar]Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar
Wenzl, PeterChávez, Alba L.Rao, Idupulapati M.Mayer, Jorge EdgardNair, Muraleedharan G.[Roots of nutrient-deprived Brachiaria species accumulate 1,3-di-O-trans-feruloylquinic acid]Roots of nutrient-deprived Brachiaria species accumulate 1,3-di-O-trans-feruloylquinic acid

We summarize progress made towards the development of tools and knowledge that aid the genetic improvement of aluminum (Al) resistance in two of CIAT’s (International Center for Tropical Agriculture) commodity crops; common bean (Phaseolus vulgaris L.) and brachiariagrasses (Brachiaria spp. Grisi...


Rao, Idupulapati M.Wenzl, PeterArango Vélez, AdrianaMiles, John W.Watanabe, ToshihiroShinano, TakuroOsaki, MitsuruWagatsuma, TadaoManrique, GermánBeebe, Stephen E.Tohme, Joseph M.Ishitani, ManabuRangel Becerra, Andrés FelipeHorst, Walter J.[Advances in developing screening methods and improving aluminum resistance in common bean and brachiaria]Advances in developing screening methods and improving aluminum resistance in common bean and brachiaria
Wenzl, PeterMancilla, Lida I.Rao, Idupulapati M.Mayer, Jorge Edgard[Isolation of rare cDNAs by asymmetric self-hybridization]Isolation of rare cDNAs by asymmetric self-hybridization

Understanding the distribution of genetic diversity within and among individuals, populations, species and gene pools is crucial for the efficient management of germplasm collections. Molecular markers are playing an increasing role in germplasm characterization, yet their broad application is li...


Xia, LPeng, KYang, SWenzl, PeterVicente, M.C. deFregene, Martin A.Kilian, A[DArT for high-throughput genotyping of cassava (Manihot esculenta) and its wild relatives]DArT for high-throughput genotyping of cassava (Manihot esculenta) and its wild relatives

Aluminum toxicity limits plant growth in acid soils. Because of their advanced state of weathering, acid soils of the tropics also tend to be deficient in nutrients. A realistic assessment of plant adaptation to these soils would therefore require Al-toxic conditions under which growth is simulta...


Wenzl, PeterMancilla, LIMayer, Jorge EdgardAlbert, R.Rao, Idupulapati M.[Simulating infertile acid soils with nutrient solutions: The effects on Brachiaria species]Simulating infertile acid soils with nutrient solutions: The effects on Brachiaria species

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