title: Nitrogen deficiency hinders etioplast development in stems of dark-grown pea (Pisum sativum) shoot cultures.
abstract: The effects of nitrogen (N) deprivation were studied in etiolated pea plants (Pisum sativum cv. Zsuzsi) grown in shoot cultures. The average shoot lengths decreased and the stems significantly altered considering their pigment contents, 77 K fluorescence spectra and ultrastructural properties. The protochlorophyllide (Pchlide) content and the relative contribution of the 654-655 nm emitting flash-photoactive Pchlide form significantly decreased. The etioplast inner membrane structure characteristically changed: N deprivation correlated with a decrease in the size and number of prolamellar bodies (PLBs). These results show that N deficiency directly hinders the pigment production, as well as the synthesis of other etioplast inner membrane components in etiolated pea stems.
authors.affiliation: Department of Plant Anatomy, Eötvös University, Institute of Biology, Budapest, Hungary.
authors.forename: Annamária
authors.initials: A
authors.lastname: Kósa
authors.affiliation: Department of Plant Anatomy, Eötvös University, Institute of Biology, Budapest, Hungary.
authors.forename: Éva
authors.initials: É
authors.lastname: Preininger
authors.affiliation: Department of Plant Anatomy, Eötvös University, Institute of Biology, Budapest, Hungary.
authors.forename: Béla
authors.initials: B
authors.lastname: Böddi
mesh_terms: D002736:Chloroplasts / Q000378:metabolism / Q000648:ultrastructure*; D009584:Nitrogen / Q000378:metabolism*; D018532:Pisum sativum / Q000166:cytology* / Q000378:metabolism; D018515:Plant Leaves / Q000378:metabolism; D018520:Plant Shoots / Q000166:cytology* / Q000378:metabolism; D018547:Plant Stems / Q000166:cytology* / Q000378:metabolism; D011521:Protochlorophyllide / Q000378:metabolism; D013050:Spectrometry, Fluorescence; D046509:Tissue Culture Techniques / Q000379:methods
chemical_list: D011521:Protochlorophyllide; D009584:Nitrogen