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Natural variation in Arabidopsis is used to identify the causal gene for acquired osmotolerance. ACQOS is a resistance NLR gene, highlighting the trade-off between immunity and abiotic stress tolerance.
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.