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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

People in vast areas of the tropics suffer from vitamin A deficiency, resulting in progressive eye damage and eventually leading to blindness. Improving the content of vitamin A precursors in staple crops could alleviate or solve such a problem. The objective of this work was to study the range o...


Iglesias, C.A.Mayer, Jorge EdgardChavez, L.Calle, F[Genetic potential and stability of carotene content in cassava roots]Genetic potential and stability of carotene content in cassava roots

Micronutrient malnutrition affects more than half of the world population, particularly in developing countries. Concerted international and national fortification and supplementation efforts to curb the scourge of micronutrient malnutrition are showing a positive impact, alas without reaching th...


Mayer, Jorge EdgardPfeiffer, Wolfgang H.Beyer, Peter[Biofortified crops to alleviate micronutrient malnutrition]Biofortified crops to alleviate micronutrient malnutrition

Breeding of Phaseolus vulgaris L. for resistance to common bacterial blight (CBB) can be done with visual evaluations of symptoms to distinguish broad resistance classes, but a more quantitative measure was needed for genetic studies of resistance. A novel method of evaluation was developed by qu...


Constable, ECMichaelis, TEGoodwin, PHMayer, Jorge EdgardPastor Corrales, Marcial A.[Evaluation of a DNA probe for the quantitative detection of common bacterial blight in common bean and its application in a breeding program]Evaluation of a DNA probe for the quantitative detection of common bacterial blight in common bean and its application in a breeding program
Hoyos, R.A.Roca, William M.Hosfield, GLMayer, Jorge Edgard[Particle gun transient expression of sexual embryos of common bean]Particle gun transient expression of sexual embryos of common bean

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
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

Processing of large numbers smaples of plant tissue samples for molecular mapping and gene tagging requires methods that are quick, simple, and cheap, and that eventually can be automated. Organic solvents used for DNA extraction can represent a significant proportion of the overall cost. In this...


Chavez, Alba L.Vergara, CEMayer, Jorge Edgard[Dichloromethane as an economic alternative to chloroform in the extraction of DNA from plant tissues]Dichloromethane as an economic alternative to chloroform in the extraction of DNA from plant tissues

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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