Petra Matt
Max Planck Society
6 Papers
95 Citations
Petra Matt is an academic researcher from Max Planck Society. The author has contributed to research in topics: Nitrate reductase & Nitrogen assimilation. The author has an hindex of 6, co-authored 6 publications.
Chat about Author
Papers
Steps towards an integrated view of nitrogen metabolism
Mark Stitt,Cathrin Müller,Petra Matt,Yves Gibon,Petronia Carillo,Rosa Morcuende,Wolf-Rüdiger Scheible,Anne Krapp +7 more
TL;DR: Comparison across genotypes and conditions reveals that NIA transcript levels are always closely related to the balance between nitrate influx and assimilation, but are unrelated to changes of glutamine or 2-oxoglutarate.
657
The immediate cause of the diurnal changes of nitrogen metabolism in leaves of nitrate‐replete tobacco: a major imbalance between the rate of nitrate reduction and the rates of nitrate uptake and ammonium metabolism during the first part of the light period
TL;DR: In this article, the diurnal changes of nitrate reductase (NIA) expression in leaves interact with upstream and downstream processes during nitrate utilization, nitrate uptake, and nitrate and ammonium metabolism.
142
Growth of tobacco in short-day conditions leads to high starch, low sugars, altered diurnal changes in the Nia transcript and low nitrate reductase activity, and inhibition of amino acid synthesis.
TL;DR: Diurnal changes in carbohydrates and nitrate reductase activity were compared in tobacco plants growing in a long and short day growth regime, and mutants with one instead of four functional copies of the Nia gene had a 60% reduction in maximum NR activity in the source leaves, compared to wild-type plants.
99
Elevated carbon dioxide increases nitrate uptake and nitrate reductase activity when tobacco is growing on nitrate, but increases ammonium uptake and inhibits nitrate reductase activity when tobacco is growing on ammonium nitrate
TL;DR: In this paper, the influence of elevated CO2 on the uptake and assimilation of nitrate and ammonium was investigated by growing tobacco plants in hydroponic culture with 2mm nitrate or 1mm ammonium nitrate.
Impact of the C–N status on the amino acid profile in tobacco source leaves
TL;DR: Results indicate that regulation of amino acid metabolism, for example by the C and N status, leads to qualitatively similar responses of many amino acids, but homeostatic mechanisms involving feedback inhibition within or between individual amino acid biosynthesis pathways are not stringent.