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Natural allelic variation of FRO2 modulates Arabidopsis root growth under iron deficiency
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Natural allelic variation of FRO2 modulates Arabidopsis root growth under iron deficiency
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Natural allelic variation of FRO2 modulates Arabidopsis root growth under iron deficiency
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Journal Article
Natural allelic variation of FRO2 modulates Arabidopsis root growth under iron deficiency
2017
Overview
Low availability of Fe significantly limits crop yields in many parts of the world. However, it is largely unknown which genes and alleles adjust plant growth in Fe limited environments. Using natural variation of a geographically restricted panel of
Arabidopsis thaliana
accessions, we identify allelic variation at the
FRO2
locus associated with root length under iron deficiency. We show that non-coding sequence variation at the
FRO2
locus leads to variation of
FRO2
transcript levels, as well as ferric chelate reductase activity, and is causal for a portion of the observed root length variation. These
FRO2
allele dependent differences are coupled with altered seedling phenotypes grown on iron-limited soil. Overall, we show that these natural genetic variants of
FRO2
tune its expression. These variants might be useful for improvement of agronomically relevant species under specific environmental conditions, such as in podzols or calcareous soils.
Iron is an essential micronutrient for plants and a lack of iron availability limits crop yield in many parts of the world. Here the authors show that natural variation in root growth of
Arabidopsis
plants under iron deficiency can be caused by allelic variation at the
FRO2
locus.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
