ORCID Profile
0000-0002-6210-4900
Current Organisation
Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK) Gatersleben
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Publisher: Springer Science and Business Media LLC
Date: 30-05-2019
DOI: 10.1038/S41467-019-10331-9
Abstract: Developmental plasticity of root system architecture is crucial for plant performance in nutrient-poor soils. Roots of plants grown under mild nitrogen (N) deficiency show a foraging response characterized by increased root length but mechanisms underlying this developmental plasticity are still elusive. By employing natural variation in Arabidopsis accessions, we show that the brassinosteroid (BR) signaling kinase BSK3 modulates root elongation under mild N deficiency. In particular, a proline to leucine substitution in the predicted kinase domain of BSK3 enhances BR sensitivity and signaling to increase the extent of root elongation. We further show that low N specifically upregulates transcript levels of the BR co-receptor BAK1 to activate BR signaling and stimulate root elongation. Altogether, our results uncover a role of BR signaling in root elongation under low N. The BSK3 alleles identified here provide targets for improving root growth of crops growing under limited N conditions.
Publisher: Springer Science and Business Media LLC
Date: 30-08-2017
DOI: 10.1007/S00299-017-2200-6
Abstract: Polymorphic probes identified via a sequence-based approach are suitable to infer the genotypes of recombinant inbred lines from hybridisation intensities of GeneChip
Publisher: Informa UK Limited
Date: 2002
Publisher: Springer Science and Business Media LLC
Date: 19-09-2006
DOI: 10.1007/S00122-006-0402-3
Abstract: A new large set of reciprocal recombinant inbred lines (RILs) was created between the Arabidopsis accessions Col-0 and C24 for quantitative trait mapping approaches, consisting of 209 Col-0 x C24 and 214 C24 x Col-0 F(7 )RI lines. Genotyping was performed using 110 evenly distributed framework single nucleotide polymorphism markers, yielding a genetic map of 425.70 cM, with an average interval of 3.87 cM. Segregation distortion (SD) was observed in several genomic regions during the construction of the genetic map. Linkage disequilibrium analysis revealed an association between a distorted region at the bottom of chromosome V and a non-distorted region on chromosome IV. A detailed analysis of the RILs for these two regions showed that an SD occurred when homozygous Col-0 alleles on chromosome IV coincided with homozygous C24 alleles at the bottom of chromosome V. Using nearly isogenic lines segregating for the distorted region we confirmed that this genotypic composition leads to reduced fertility and fitness.
Publisher: Wiley
Date: 21-06-2010
Location: Germany
Location: United Kingdom of Great Britain and Northern Ireland
Location: Germany
Location: Germany
No related grants have been discovered for Rhonda C. Meyer.