Publications by authors named "Andres Felipe Rangel"
Two common bean (Phaseolus vulgaris L.) genotypes differing in aluminum (Al) resistance, Quimbaya (Al-resistant) and VAX-1 (Al-sensitive) were grown in hydroponics for up to 25 h with or without Al, and several parameters related to the exudation of organic acids anions from the root apex were investigated. Al treatment enhanced the exudation of citrate from the root tips of both genotypes.
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- The study investigates how aluminum (Al) distribution and binding affect toxicity in two common bean genotypes with different resistance levels to Al.
- Al accumulation was higher in the Al-resistant genotype (Quimbaya) due to its greater content of unmethylated pectin, which contributes to a more negatively charged cell wall.
- The research suggests that successful recovery from Al stress in Quimbaya involves reducing stable-bound Al in the root apoplast, enabling cell growth to continue after initial toxicity.