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Titolo:
EFFECT OF SEED FREEZING AND STORAGE-CONDITIONS ON PLASMA-MEMBRANE PROPERTIES OF NORWAY SPRUCE (PICEA-ABIES KARST.) SEEDLINGS
Autore:
RAKOWSKI KJ; BEHZADIPOUR M; RATAJCZAK R; KLUGE M;
Indirizzi:
FORESTRY RES INST WARSAW,DEPT GENET & FOREST TREES PHYSIOL,BITWY WARSZAWSKIEJI 1920 R-3 PL-00973 WARSAW POLAND
Titolo Testata:
Botanica acta
fascicolo: 3, volume: 111, anno: 1998,
pagine: 236 - 240
SICI:
0932-8629(1998)111:3<236:EOSFAS>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
H+-ATPASE; PLANTS; RESOURCES; PROTEINS;
Keywords:
PLASMA MEMBRANE; FLUIDITY; H+-ATPASE; SEED STORAGE; VIABILITY; PICEA ABIES KARST;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
K.J. Rakowski et al., "EFFECT OF SEED FREEZING AND STORAGE-CONDITIONS ON PLASMA-MEMBRANE PROPERTIES OF NORWAY SPRUCE (PICEA-ABIES KARST.) SEEDLINGS", Botanica acta, 111(3), 1998, pp. 236-240

Abstract

Norway spruce (Picea abies Karst.) seeds were frozen and stored for 15 months at + 3, - 25, - 75 or - 196 degrees C. After storage, seeds were germinated for 9-14 days to determine viability and plasma membrane protein composition, H+-ATPase activity and fluidity. The results indicate no significant differences in viability of seed 14 days after germination. Biochemical analyses revealed increased plasma membrane fluidity in 9-day-old Norway spruce seedlings raised from seeds pretreated at - 75 degrees C, and changes in the temperature profile of membrane fluidity in seedlings after pre-treatment of seeds at - 25 degrees C. On the other hand, the same treatments did not result in changes inplasma membrane protein content, protein composition or ATPase activity. There was also no difference in plasma membrane H+-ATPase activityassayed in the presence of different ATP hydrolysis inhibitors. Basedon the presented results, and other experimental data, we suggest that during early seedling growth, adaptation of seeds to - 25 and - 75 degrees C freezing and/or storage temperature results in stability of the plasma membrane protein function and composition and increased fluidity or changes in the temperature-dependent fluidity profile of thesemembranes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 05:45:42