2018
DOI: 10.1590/1678-992x-2016-0422
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Abstract: ABSTRACT:In acid soils, toxic aluminum ions inhibit plant root growth. In order to discriminate aluminum (Al) tolerance, trustful screening techniques are required. In this study, 20 wheat cultivars, showing different levels of Al tolerance, were evaluated in a short-term soil experiment to access their relative root length (RRL). Moreover, the alleles of two important genes (TaALMT1 and TaMATE1B) for Al tolerance in wheat were discriminated. Both of these genes encode membrane transporters responsible for the… Show more

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Cited by 18 publications
(6 citation statements)
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“…As such, the downward current deflections observed here are likely to equate to the opening of an ion channel facilitating malate efflux rather than cation influx. As Al 3+ is known to activate TaALMT1 when extracellular pH is acidic (Delhaize et al, 2007;Delhaize et al, 2012;Pereira et al, 2010;Pereira, 2016;Pinéros et al, 2008;Raman et al, 2008;Ryan et al, 2010;Sasaki et al, 2004), inside-out patches were exposed to 0 mM malate at pH 4.5 in the pipette (equivalent to the external face of the membrane, to avoid chelation with Al 3+ ) and to pH 7.2 and malate from the cytoplasmic side. In these conditions currents were activated when 100 M Al 3+ was included from the extracellular side (pipette) (Fig.…”
Section: Gaba and Muscimol Inhibited Taalmt1 Anion Channel Activity In Membrane Patchesmentioning
confidence: 99%
“…As such, the downward current deflections observed here are likely to equate to the opening of an ion channel facilitating malate efflux rather than cation influx. As Al 3+ is known to activate TaALMT1 when extracellular pH is acidic (Delhaize et al, 2007;Delhaize et al, 2012;Pereira et al, 2010;Pereira, 2016;Pinéros et al, 2008;Raman et al, 2008;Ryan et al, 2010;Sasaki et al, 2004), inside-out patches were exposed to 0 mM malate at pH 4.5 in the pipette (equivalent to the external face of the membrane, to avoid chelation with Al 3+ ) and to pH 7.2 and malate from the cytoplasmic side. In these conditions currents were activated when 100 M Al 3+ was included from the extracellular side (pipette) (Fig.…”
Section: Gaba and Muscimol Inhibited Taalmt1 Anion Channel Activity In Membrane Patchesmentioning
confidence: 99%
“…In fact, superior alleles of the two most important genes for Al tolerance in wheat (TaALMT1 and TaMATE1B) are found in wheat cultivars recommended for rainfed cropping in the Cerrado (Pereira et al 2015, Aguilera et al 2016. These alleles are associated with wheat performance in acid field soils (Aguilera et al 2016) and the performance in the field is highly correlated with the initial root growth (Pereira 2018). Tracking these alleles during breeding will be an interesting target to eventually improve drought tolerance in central Brazil.…”
Section: Traits and Their Molecular Basis Potentially Associated Withmentioning
confidence: 99%
“…In soil, beyond the threshold concentration, Al can induce toxic effect on plants, leading to the hindrance of plant root growth and reduced nutrition and water availability (Fan et al., 2020) where the physiological disturbances intensity depends on the level of accumulation of the metal ion within the plant tissue (Chibuike & Obiora, 2014). In fact, root growth was significantly inhibited by toxic Al ions in acid soil (Pereira, 2018) which is manifested by disordered arrangement of cells, with deformed shapes and altered structure, and a reduced meristematic zone of the root tips (Wang et al., 2016).…”
Section: Introductionmentioning
confidence: 99%