GEPHE SUMMARY Print
Gephebase Gene
Entry Status
Published
GepheID
GP00000566
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Zea mays - Cateto AI237 (Al-tolerant)
Trait State in Taxon B
Zea mays - Cateto L53 (Al-sensitive)
Ancestral State
Data not curated
Taxonomic Status
Taxon A
Latin Name
Common Name
-
Synonyms
Zea mays var. japonica; maize; Zea mays L.; Zea mays mays
Rank
species
Lineage
Show more ... phyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; PACMAD clade; Panicoideae; Andropogonodae; Andropogoneae; Tripsacinae; Zea
NCBI Taxonomy ID
is Taxon A an Infraspecies?
Yes
Taxon A Description
Zea mays - Cateto AI237 (Al-tolerant)
Taxon B
Latin Name
Common Name
-
Synonyms
Zea mays var. japonica; maize; Zea mays L.; Zea mays mays
Rank
species
Lineage
Show more ... phyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; PACMAD clade; Panicoideae; Andropogonodae; Andropogoneae; Tripsacinae; Zea
NCBI Taxonomy ID
is Taxon B an Infraspecies?
Yes
Taxon B Description
Zea mays - Cateto L53 (Al-sensitive)
GENOTYPIC CHANGE
Generic Gene Name
-
Synonyms
-
String
-
Sequence Similarities
-
GO - Molecular Function
-
GO - Biological Process
-
GO - Cellular Component
-
UniProtKB
GenebankID or UniProtKB
Presumptive Null
Molecular Type
Aberration Type
Molecular Details of the Mutation
unknown
Experimental Evidence
Authors
Maron LG; Piñeros MA; Guimarães CT; Magalhaes JV; Pleiman JK; Mao C; Shaff J; Belicuas SN; et al. ... show more
Abstract
Crop yields are significantly reduced by aluminum (Al) toxicity on acidic soils, which comprise up to 50% of the world's arable land. Al-activated release of ligands (such as organic acids) from the roots is a major Al tolerance mechanism in plants. In maize, Al-activated root citrate exudation plays an important role in tolerance. However, maize Al tolerance is a complex trait involving multiple genes and physiological mechanisms. Recently, transporters from the MATE family have been shown to mediate Al-activated citrate exudation in a number of plant species. Here we describe the cloning and characterization of two MATE family members in maize, ZmMATE1 and ZmMATE2, which co-localize to major Al tolerance QTL. Both genes encode plasma membrane proteins that mediate significant anion efflux when expressed in Xenopus oocytes. ZmMATE1 expression is mostly concentrated in root tissues, is up-regulated by Al and is significantly higher in Al-tolerant maize genotypes. In contrast, ZmMATE2 expression is not specifically localized to any particular tissue and does not respond to Al. [(14)C]-citrate efflux experiments in oocytes demonstrate that ZmMATE1 is a citrate transporter. In addition, ZmMATE1 expression confers a significant increase in Al tolerance in transgenic Arabidopsis. Our data suggests that ZmMATE1 is a functional homolog of the Al tolerance genes recently characterized in sorghum, barley and Arabidopsis, and is likely to underlie the largest maize Al tolerance QTL found on chromosome 6. However, ZmMATE2 most likely does not encode a citrate transporter, and could be involved in a novel Al tolerance mechanism.
Additional References
RELATED GEPHE
Related Genes
No matches found.
Related Haplotypes
No matches found.
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