Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Starch, storage protein and triglyceride accumulation and respiration in developing embryos in Hevea brasiliensis
Autore:
Courty, C; Ducher, M; Coudret, A;
Indirizzi:
Univanceise Pascal, Lab Physiol & Biotechnol Vegetales, F-63177 Aubiere, Fr Univ Blaise Pascal Aubiere France F-63177 Vegetales, F-63177 Aubiere, Fr
Titolo Testata:
JOURNAL OF PLANT PHYSIOLOGY
fascicolo: 5-6, volume: 154, anno: 1999,
pagine: 686 - 690
SICI:
0176-1617(199905)154:5-6<686:SSPATA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
MEDICAGO-SATIVA L; ADP-GLUCOSE PYROPHOSPHORYLASE; L SOMATIC EMBRYOS; BRASSICA-NAPUS L; DAUCUS-CAROTA L; ABSCISIC-ACID; DESICCATION TOLERANCE; WHITE SPRUCE; NONEMBRYOGENIC CELLS; ZYGOTIC EMBRYOS;
Keywords:
abscisic arid; Hevea brasiliensis (rubber tree); polyethylene glycol; respiration; somatic embryos; storage products;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Courty, C Univ3177ise Pascal, Lab Physiol & Biotechnol Vegetales, 24 Ave Landais, F-6 Univ Blaise Pascal 24 Ave Landais Aubiere France F-63177 s, F-6
Citazione:
C. Courty et al., "Starch, storage protein and triglyceride accumulation and respiration in developing embryos in Hevea brasiliensis", J PLANT PHY, 154(5-6), 1999, pp. 686-690

Abstract

Starch, storage protein and triglyceride contents and respiratory rate were studied in an embryogenic strain of Hevea brasiliensis during developmentof somatic embryos. For comparison, a non-embryogenic strain was also investigated. The development of somatic embryos was studied on a medium containing polyethylene glycol and abscisic acid, and a medium devoid of both. Somatic embryos were almost lacking on medium devoid of polyethylene glycol and abscisic acid: only 3 % of torpedo embryos versus 40 % on medium containing these substances. Storage product accumulation in somatic embryos was observed on the medium containing polyethylene glycol and abscisic acid but not on the medium devoid of both. It took place in torpedo embryos; this could explain why it was absent on medium devoid of polyethylene glycol and abscisic acid. In torpedo embryos, storage proteins and triglycerides were accumulated at the same time, followed by starch deposition. Starch, storageproteins and triglycerides represented respectively 4.4 %, 36.1 % and 53.5% of the total reserves accumulated. In non-embryogenic cells, starch, storage protein and triglyceride levels were similar whatever the culture conditions. The respiration rate was greater in embryogenic and non-embryogeniccells cultured on the medium containing polyethylene glycol and abscisic acid than on the medium devoid of both. This stimulation of respiration could be linked with greater osmotic pressure of the medium containing polyethylene glycol. Also, when torpedo embryos were formed, respiratory rate decreased and accumulation of storage products was observed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 04:19:32