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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

Khan, Hossain MD. ShahadatWagatsuma, TadaoTawaraya, KeitarouKambayashi, MihokoChuba, MasaruIshikawa, SatoruAkhter, AfrinWenzl, PeterRao, Idupulapati M.[Aluminum tolerance is not always the primary strategy for better growth of rice in long-term under low ionic strength conditions]Aluminum tolerance is not always the primary strategy for better growth of rice in long-term under low ionic strength conditions

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

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

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
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

We previously developed a new simple technique of methylene blue (MB) staining for the discrimination of aluminum (Al)-tolerant protoplasts from 4 plant species (rice, oats, maize and pea). The objectives of the present study were to confirm the applicability of this technique to a wider range of...


Wagatsuma, TadaoKhan, Shahadat HossainRao, Idupulapati M.Wenzl, PeterTawaraya, KeitarouYamamoto, TakanoriKawamura, TakeshiHosogoe, KazumiIshikawa, Satoru[Methylene blue sustainability of root-tip protoplasts as an indicator of aluminum tolerance in a wide range of plant species, cultivars and lines]Methylene blue sustainability of root-tip protoplasts as an indicator of aluminum tolerance in a wide range of plant species, cultivars and lines

Al resistance of signalgrass (Brachiaria decumbens Stapf cv Basilisk), a widely sown tropical forage grass, is outstanding compared with the closely related ruzigrass (Brachiaria ruziziensis Germain and Evrard cv Common) and Al-resistant genotypes of graminaceous crops such as wheat, triticale, a...


Wenzl, PeterPatino, GMChavez, Alba L.Mayer, Jorge EdgardRao, Idupulapati M.[The high level of aluminum resistance in signalgrass is not associated with known mechanism of external aluminum detoxification in root apices]The high level of aluminum resistance in signalgrass is not associated with known mechanism of external aluminum detoxification in root apices

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