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Louw-Gaume, AGaume, ARao, Idupulapati M.Frossard, Emmanuel[Adaptation of Brachiaria species to low-P soils]Adaptation of Brachiaria species to low-P soils

Aluminium (Al) toxicity limits common bean productivity in acid soil regions of the tropics. To improve Al resistance of common bean, Al-sensitive Phaseolus vulgaris (SER16) was crossed to Al-resistant P. coccineus (G35346-3Q) to create 94 F5:6 recombinant inbred lines (RILs) of the pedigree SER1...


Butare, LouisRao, Idupulapati M.Lepoivre, PhilippeCajiao V., César HernandoPolanía Perdomo, José A.Cuasquer, Juan B.Beebe, Stephen E.[Phenotypic evaluation of interspecific recombinant inbred lines (RILs) of Phaseolus species for aluminium resistance and shoot and root growth response to aluminium–toxic acid soil]Phenotypic evaluation of interspecific recombinant inbred lines (RILs) of Phaseolus species for aluminium resistance and shoot and root growth response to aluminium–toxic acid soil

Many tropical forage grasses and legumes grow well in acid soils, adapting to excess aluminum (Al) and phosphorus (P) starvation stresses by using mechanisms that are still unclear. To determine these mechanisms, responses to Al toxicity and P starvation in three tropical forages were studied: tw...


Watanabe, ToshihiroOsaki, MitsuruYano, HiromiRao, Idupulapati M.[Internal mechanisms of plant adaptation to aluminum toxicity and phosphorus starvation in three tropical forages]Internal mechanisms of plant adaptation to aluminum toxicity and phosphorus starvation in three tropical forages

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

The initial response of plants to aluminium (Al) is an inhibition of root elongation. In the present study, short and medium-term effects of Al treatment (20??M) on root growth and Al accumulation of two common bean (Phaseolus vulgaris L.) genotypes, VAX-1 (Al-sensitive) and Quimbaya (Al-resistan...


Rangel Becerra, AFRao, Idupulapati M.Horst, Walter J.[Spatial aluminium sensitivity of root apices of two common bean (Phaseolus vulgaris L.) genotypes with contrasting aluminium resistance]Spatial aluminium sensitivity of root apices of two common bean (Phaseolus vulgaris L.) genotypes with contrasting aluminium resistance

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

Phosphorus (P) deficiency and aluminium (Al) toxicity are widespread in Oxisols of the tropical savannas of eastern Colombia. A field experiment was conducted to determine the effect of Al toxicity and P deficiency on plant growth and nutrient uptake of two Brachiaria species. To examine the infl...


Hausller, KRao, Idupulapati M.Schultze-Kraft, RainerMarschner, H[Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia]Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia
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

Background and Aims: Aluminium (Al) resistance in common bean is known to be due to exudation of citrate from the root after a lag phase, indicating the induction of gene transcription and protein synthesis. The aims of this study were to identify Al-induced differentially expressed genes and to ...


Eticha, DZahn, MBremer, MYang, ZRangel Becerra, AFRao, Idupulapati M.Horst, Walter J.[Transcriptomic analysis reveals differential gene expression in response to aluminium in common bean (Phaseolus vulgaris) genotypes]Transcriptomic analysis reveals differential gene expression in response to aluminium in common bean (Phaseolus vulgaris) genotypes

The role of the intracellular distribution and binding state of aluminum (Al) in Al toxicity, using Al exchange and Al fractionation methodologies, were studied in two common bean (Phaseolus vulgaris L.) genotypes differing in Al resistance. These two genotypes are characterized by a similar init...


Rangel Becerra, AFRao, Idupulapati M.Horst, Walter J.[Intracellular distribution and binding state of aluminum in root apices of two common bean (Phaseolus vulgaris) genotypes in relation to Al toxicity]Intracellular distribution and binding state of aluminum in root apices of two common bean (Phaseolus vulgaris) genotypes in relation to Al toxicity

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