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Title:Timeline of leaf and cambial phenology in relation to development of initial conduits in xylem and phloem in three coexisting sub-Mediterranean deciduous tree species
Authors:ID Gričar, Jožica (Author)
ID Vedenik, Andreja (Author)
ID Skoberne, Gregor (Author)
ID Hafner, Polona (Author)
ID Prislan, Peter (Author)
Files:.pdf PDF - Presentation file, download (1,39 MB)
MD5: 6EBC836328CA0F23AE2EBDE166F77DAE
 
URL URL - Source URL, visit https://www.mdpi.com/1999-4907/11/10/1104
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo SciVie - Slovenian Forestry Institute
Abstract:It is unclear how the anticipated climate change will affect the timing of phenology of different tree organs/tissues and thus the whole-tree functioning. We examined the timing of leaf phenology and secondary growth in three coexisting deciduous tree species (Quercus pubescens Willd., Fraxinus ornus L. and Ostrya carpinifolia Scop) from a sub-Mediterranean region in 2019. In addition, we investigated the relationship between leaf and cambial phenology and the onset of the potential functioning of initial conduits, as determined by the completed differentiation process (vessels) or final size (sieve tubes). For this purpose, leaf development was monitored and the microcores of cambium and the youngest phloem and xylem increments were repeatedly collected at 7-10-day intervals during the growing season. The results revealed differences in the timing of leaf development and seasonal radial growth patterns in spring among the studied tree species, depending on wood porosity. We found that cambial cell production started in all cases in the first half of March. However, in ring-porous Q. pubescens and F. ornus, radial growth in the stem occurred more than a month before buds were swollen, whereas in diffuse-porous O. carpinifolia, these two events were detected at almost the same time. The end of cambial cell production occurred earliest in F. ornus (mid-July) and two weeks later also in the other two species. The widest initial earlywood vessels and early phloem sieve tubes were found in Q. pubescens, the narrowest initial earlywood vessels in O. carpinifolia and the narrowest early phloem sieve tubes in F. ornus. This indicates differences in the e%ciency of conducting systems among the studied species. This novel approach of studying phloem phenology and anatomy in relation to leaf and xylem development contributes to a better understanding of how different tree species adapt their structure of secondary vascular tissues in response to environmental change.
Keywords:Quercus pubescens, Fraxinus ornus, Ostrya carpinifolia, earlywood, early phloem, vessel, sieve tube, radial growth
Year of publishing:2020
Publication status in journal:Published
Article version:Publisher's version of article
Number of pages:14 str.
Numbering:article 1104, iss. 10
UDC:630*811
ISSN on article:1999-4907
DOI:10.3390/f11101104 New window
COBISS.SI-ID:33382403 New window
Note:Nasl. iz nasl. zaslona; Opis vira z dne 20. 10. 2020;
Publication date in DiRROS:21.10.2020
Views:764
Downloads:559
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Record is a part of a journal

Title:Forests
Shortened title:Forests
Publisher:MDPI
ISSN:1999-4907
COBISS.SI-ID:3872166 New window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project number:P4-0107
Name:Gozdna biologija, ekologija in tehnologija

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project number:J4-7203
Name:Kratkoročni in dolgoročni odzivi hrastov v submediteranu na ekstremne vremenske dogodke s pomočjo drevesno-anatomskih analiz in eko-fizioloških meritev

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project number:J4-9297
Name:Skladnost in časovno ujemanje med ogljikom vezanim v lesno biomaso in

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:19.10.2020
Applies to:Published ver.

Secondary language

Language:Undetermined
Keywords:Quercus pubescens, Fraxinus ornus, Ostrya carpinifolia, rani les, rani floem, traheje, sitaste cevi, debelinska rast


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