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Seasonal ultrastructural changes in the cambial zone of beech (Fagus sylvatica) grown at two different altitudes
Prislan, Peter (Avtor), Schmitt, Uwe (Avtor), Koch, Gerald (Avtor), Gričar, Jožica (Avtor), Čufar, Katarina (Avtor)

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Izvleček
Seasonal structural changes of cambial cells in mature beech (Fagus sylvatica L.) trees growing at elevations of 400 m a.s.l. (lowland) and 1200 m a.s.l. (mountains) are presented on the basis of light (LM) and electron microscopy (TEM). For LM, samples from trees were collected at weekly intervals and for TEM at two-month intervals from March till September, 2008. LM enabled us to follow the production of new xylem and phloem cells that lasted for 16.5 Ž 3.7 weeks at the lowland site and for 10.7 Ž 1.3 weeks in the mountains. TEM revealed differences in ultrastructure of cambial cells in the phases of dormancy, reactivation, activity and transition to dormancy. The seasonal patterns of ultrastructural changes in cambial cells were similar at both sites but their timing was different. TEM revealed changes in the fine structure of cambial cells, indicating their activation in spring and the earliest stages of cell divisions and development of new cell walls. When using LM, the onset of cambial activity could be observed one month later, compared with TEM. LM therefore enabled us to follow cambial productivity but not the activity and related cytoplasmic modifications during reactivation

Jezik:Angleški jezik
Ključne besede:Fagus sylvatica, kambij, sezonske spremembe, svetlobna mikroskopija, transmisijska elektronska mikroskopija
Vrsta gradiva:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:BF - Biotehniška fakulteta
Leto izida:2011
Založnik:Rijksherbarium/Hortus botanicus
Št. strani:str. 443 - 459
Številčenje:Let. 32, no. 4
UDK:630*8
ISSN pri članku:0928-1541
COBISS.SI-ID:1975177 Povezava se odpre v novem oknu
Število ogledov:585
Število prenosov:42
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
 
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Gradivo je del revije

Naslov:IAWA journal
Skrajšan naslov:IAWA j.
Založnik:Rijksherbarium/Hortus botanicus
ISSN:0928-1541
COBISS.SI-ID:29065 Povezava se odpre v novem oknu

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