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- Nielsen, Erik, et al. Show all 9 Authors
- Planta 2010 v.231 no.5 pp. 1189-1199
- Zea mays; acidification; aleurone layer; anthocyanins; corn; cytoplasm; gene expression; genes; genotype; mutants; mutation; pH; phosphates; phytic acid; pigmentation; pleiotropy; propionates; seeds; transporters
- ... The lpa1 mutations in maize are caused by lesions in the ZmMRP4 (multidrug resistance-associated proteins 4) gene. In previous studies (Raboy et al. in Plant Physiol 124:355-368, 2000; Pilu et al. in Theor Appl Genet 107:980-987, 2003a; Shi et al. Nat Biotechnol 25:930-937, 2007), several mutations have been isolated in this locus causing a reduction of phytic acid (myo-inositol-1,2,3,4,5,6-hexaki ...
- Nielsen, Erik, et al. Show all 5 Authors
- The plant cell 2008 v.20 no.2 pp. 381-395
- Arabidopsis thaliana; fluorescence microscopy; genes; molecular cloning; mutants; plasma membrane; proteins; root hairs
- ... Polarized expansion of root hair cells in Arabidopsis thaliana is improperly controlled in root hair-defective rhd4-1 mutant plants, resulting in root hairs that are shorter and randomly form bulges along their length. Using time-lapse fluorescence microscopy in rhd4-1 root hairs, we analyzed membrane dynamics after labeling with RabA4b, a marker for polarized membrane trafficking in root hairs. T ...
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- Nielsen, Erik, et al. Show all 11 Authors
- The new phytologist 2011 v.191 no.1 pp. 70-83
- ABC transporters; abscisic acid; beans; gene expression; genes; metabolism; mutants; mutation; myo-inositol; nucleotide sequences; phenotype; phytic acid; quantitative analysis; seeds; soybeans
- ... • We previously identified the lpa1 (low phytic acid) 280-10 line that carries a mutation conferring a 90% reduction in phytic acid (InsP₆) content. In contrast to other lpa mutants, lpa1(280-10) does not display negative pleiotropic effects. In the present paper, we have identified the mutated gene and analysed its impact on the phytic acid pathway. • Here, we mapped the lpa1(280-10) mutation by ...