Skip to Main Content (Press Enter)

Logo UNITO
  • ×
  • Home
  • Pubblicazioni
  • Progetti
  • Persone
  • Competenze
  • Settori
  • Strutture
  • Terza Missione

UNI-FIND
Logo UNITO

|

UNI-FIND

unito.it
  • ×
  • Home
  • Pubblicazioni
  • Progetti
  • Persone
  • Competenze
  • Settori
  • Strutture
  • Terza Missione
  1. Pubblicazioni

Modulation of photorespiration and nitrogen recycling in Fe-deficient cucumber leaves

Articolo
Data di Pubblicazione:
2020
Abstract:
Low Fe availability affects plant production mainly by impairing the photosynthetic pathway, since Fe plays an essential role in chlorophyll synthesis as well as in the photosynthetic electron transport chain. Under these conditions, plant cells require the activation of protective mechanisms to prevent photo-inhibition. Among these mechanisms, photorespiration (PR) has been relatively little investigated in Fe-deficient plants. The aim of this work was to investigate the effect of Fe deficiency on photorespiration by performing in vivo analysis in leaves as well as biochemical characterization of some PR-related enzyme activities in a peroxisome-purified fraction from cucumber leaves. Modelling of light response curves at both 21 and 2% pO2 revealed a slowing down of PR under Fe deficiency. The activity of some PR-involving enzymes as well as the contents of glycine and serine were affected under Fe deficiency. Furthermore, nitrate reductase, the glutamine synthetase-glutamate synthase (GS-GOGAT) cycle and hydroxypyruvate dehydrogenase isoform activities were differentially altered under Fe deficiency. The dataset indicates that, in Fe-deficient cucumber leaves, the modulation of PR involves the induction of some PR-related pathways, such as the photorespiratory N recycling and cytosolic photorespiratory bypass processes.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Fe deficiency; Iron metabolism; Peroxisome; Photorespiration
Elenco autori:
Casiraghi F.M.; Landi M.; Donnini S.; Borlotti A.; Zocchi G.; Guidi L.; Vigani G.
Autori di Ateneo:
VIGANI Gianpiero
Link alla scheda completa:
https://iris.unito.it/handle/2318/1743471
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1743471/622603/Casiraghi%20et%20al.,%202020_post%20print.pdf
Pubblicato in:
PLANT PHYSIOLOGY AND BIOCHEMISTRY
Journal
  • Utilizzo dei cookie

Realizzato con VIVO | Designed by Cineca | 25.6.1.0