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Titolo:
Proteins of axial organs of dormant and germinating horse chestnut seeds: 1. General characterization
Autore:
Gumilevskaya, NA; Azarkovich, MI; Komarova, ME; Obroucheva, NV;
Indirizzi:
Russian Acad Sci, Bach Inst Biochem, Moscow 117071, Russia Russian Acad Sci Moscow Russia 117071 nst Biochem, Moscow 117071, Russia Russian Acad Sci, KA Timiryazev Plant Physiol Inst, Moscow 127276, Russia Russian Acad Sci Moscow Russia 127276 hysiol Inst, Moscow 127276, Russia
Titolo Testata:
RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
fascicolo: 1, volume: 48, anno: 2001,
pagine: 1 - 11
SICI:
1021-4437(200101/02)48:1<1:POAOOD>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
DESICCATION-TOLERANCE; AESCULUS-HIPPOCASTANUM; MATURATION; EMBRYOS;
Keywords:
Aesculus hyppocastanum; seeds; proteins; dormancy; germination; heat-stable proteins;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Gumilevskaya, NA Russian Acad Sci, Bach Inst Biochem, Leninskii Pr 33, Moscow 117071, Russia Russian Acad Sci Leninskii Pr 33 Moscow Russia 117071 ia
Citazione:
N.A. Gumilevskaya et al., "Proteins of axial organs of dormant and germinating horse chestnut seeds: 1. General characterization", RUSS J PL P, 48(1), 2001, pp. 1-11

Abstract

This is the first characterization of proteins from axial organs of recalcitrant horse chestnut seeds during deep dormancy, dormancy release, and germination. We demonstrated that, during the entire period of cold stratification, axial organs were enriched in easily soluble albumin-like proteins and almost devoid of globulins. About 80% of the total protein was found in the cytosol. Approximately one third of cytosolic proteins were heat-stable polypeptides, which were major components of total proteins. Heat-stable proteins comprised three groups of polypeptides with mol wts of 52-54, 24-25,and 6-12 kD with a predominance of low-molecular-weight proteins. The polypeptide patterns of heat-stable and thermolabile proteins differed strikingly. Heat-stable proteins accumulated in axes during the late seed maturation, comprising more than 30% of the total protein in axes of mature seeds. The polypeptide patterns of the total protein of axial organs and its particular fractions did not change in the course of seed dormancy and release. At early germination, the content of heat-stable proteins in axes decreased and their polypeptide pattern changed both in the cytosol and cell structures. We believe that at least some heat-stable proteins can function as storage proteins in the axes. Localization of storage proteins in the cells of axial organs and the role of heat-stable proteins in recalcitrant seeds arediscussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 16/07/20 alle ore 19:16:17