@article{OlasWahl2019,
  author    = {Olas, Justyna Jadwiga and Wahl, Vanessa},
  title     = {Tissue-specific NIA1 and NIA2 expression in Arabidopsis thaliana},
  series = {Plant Signaling \& Behavior},
  volume    = {14},
  journal   = {Plant Signaling \& Behavior},
  number    = {11},
  publisher = {Taylor \& Francis Group},
  address   = {Philadelphia},
  issn      = {1559-2316},
  doi       = {10.1080/15592324.2019.1656035},
  pages     = {5},
  year      = {2019},
  abstract  = {Nitrogen (N) is an essential macronutrient for optimal plant growth and ultimately for crop productivity Nitrate serves as the main N source for most plants. Although it seems a well-established fact that nitrate concentration affects flowering, its molecular mode of action in flowering time regulation was poorly understood. We recently found how nitrate, present at the shoot apical meristem (SAM), controls flowering time In this short communication, we present data on the tissue-specific expression patterns of NITRATE REDUCTASE 1 (NIA1) and NIA2 in planta. We show that transcripts of both genes are present throughout the life cycle of Arabidopsis thaliana plants with NIA1 being predominantly active in leaves and NIA2 in meristematic tissues.},
  language  = {en}
}
@article{SicardThammMaronaetal.2014,
  author    = {Sicard, Adrien and Thamm, Anna and Marona, Cindy and Lee, Young Wha and Wahl, Vanessa and Stinchcombe, John R. and Wright, Stephen I. and Kappel, Christian and Lenhard, Michael},
  title     = {Repeated evolutionary changes of leaf morphology caused by mutations to a homeobox gene},
  series = {Current biology},
  volume    = {24},
  journal   = {Current biology},
  number    = {16},
  publisher = {Cell Press},
  address   = {Cambridge},
  issn      = {0960-9822},
  doi       = {10.1016/j.cub.2014.06.061},
  pages     = {1880 -- 1886},
  year      = {2014},
  abstract  = {Elucidating the genetic basis of morphological changes in evolution remains a major challenge in biology [1-3]. Repeated independent trait changes are of particular interest because they can indicate adaptation in different lineages or genetic and developmental constraints on generating morphological variation [4-6]. In animals, changes to "hot spot" genes with minimal pleiotropy and large phenotypic effects underlie many cases of repeated morphological transitions [4-8]. By contrast, only few such genes have been identified from plants [8-11], limiting cross-kingdom comparisons of the principles of morphological evolution. Here, we demonstrate that the REDUCED COMPLEXITY (RCO) locus [12] underlies more than one naturally evolved change in leaf shape in the Brassicaceae. We show that the difference in leaf margin dissection between the sister species Capsella rubella and Capsella grandiflora is caused by cis-regulatory variation in the homeobox gene RCO-A, which alters its activity in the developing lobes of the leaf. Population genetic analyses in the ancestral C. grandiflora indicate that the more-active C. rubella haplotype is derived from a now rare or lost C. grandiflora haplotype via additional mutations. In Arabidopsis thaliana, the deletion of the RCO-A and RCO-B genes has contributed to its evolutionarily derived smooth leaf margin [12], suggesting the RCO locus as a candidate for an evolutionary hot spot. We also find that temperature-responsive expression of RCO-A can explain the phenotypic plasticity of leaf shape to ambient temperature in Capsella, suggesting a molecular basis for the well-known negative correlation between temperature and leaf margin dissection.},
  language  = {en}
}
@article{OlasApeltWatanabeetal.2021,
  author    = {Olas, Justyna Jadwiga and Apelt, Federico and Watanabe, Mutsumi and H{\"o}fgen, Rainer and Wahl, Vanessa},
  title     = {Developmental stage-specific metabolite signatures in Arabidopsis thaliana under optimal and mild nitrogen limitation},
  series = {Plant science : an international journal of experimental plant biology},
  volume    = {303},
  journal   = {Plant science : an international journal of experimental plant biology},
  publisher = {Elsevier Science},
  address   = {Amsterdam [u.a.]},
  issn      = {0168-9452},
  doi       = {10.1016/j.plantsci.2020.110746},
  pages     = {14},
  year      = {2021},
  abstract  = {Metabolites influence flowering time, and thus are among the major determinants of yield. Despite the reported role of trehalose 6-phosphate and nitrate signaling on the transition from the vegetative to the reproductive phase, little is known about other metabolites contributing and responding to developmental phase changes. To increase our understanding which metabolic traits change throughout development in Arabidopsis thaliana and to identify metabolic markers for the vegetative and reproductive phases, especially among individual amino acids (AA), we profiled metabolites of plants grown in optimal (ON) and limited nitrogen (N) (LN) conditions, the latter providing a mild but consistent limitation of N. We found that although LN plants adapt their growth to a decreased level of N, their metabolite profiles are strongly distinct from ON plant profiles, with N as the driving factor for the observed differences. We demonstrate that the vegetative and the reproductive phase are not only marked by growth parameters such as biomass and rosette area, but also by specific metabolite signatures including specific single AA. In summary, we identified N-dependent and -independent indicators manifesting developmental stages, indicating that the plant's metabolic status also reports on the developmental phases.},
  language  = {en}
}