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Seasonal ultrastructural changes in the cambial zone of beech (Fagus sylvatica) grown at two different altitudes
ID
Prislan, Peter
(
Author
),
ID
Schmitt, Uwe
(
Author
),
ID
Koch, Gerald
(
Author
),
ID
Gričar, Jožica
(
Author
),
ID
Čufar, Katarina
(
Author
)
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Abstract
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
Language:
English
Keywords:
Fagus sylvatica
,
kambij
,
sezonske spremembe
,
svetlobna mikroskopija
,
transmisijska elektronska mikroskopija
Work type:
Not categorized
Typology:
1.01 - Original Scientific Article
Organization:
BF - Biotechnical Faculty
Publisher:
Rijksherbarium/Hortus botanicus
Year:
2011
Number of pages:
Str. 443 - 459
Numbering:
Let. 32, no. 4
PID:
20.500.12556/RUL-68589
UDC:
630*8
ISSN on article:
0928-1541
COBISS.SI-ID:
1975177
Publication date in RUL:
10.07.2015
Views:
1835
Downloads:
42
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Record is a part of a journal
Title:
IAWA journal
Shortened title:
IAWA j.
Publisher:
Rijksherbarium/Hortus botanicus
ISSN:
0928-1541
COBISS.SI-ID:
29065
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