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Title:Vpliv suše na drobne korenine dreves in ektomikorizo v gozdnih ekosistemih
Authors:ID Mrak, Tanja (Author)
ID Kraigher, Hojka (Author)
Files:URL URL - Presentation file, visit https://doi.org/10.20315/ASetL.120.1
 
.pdf PDF - Presentation file, download (2,04 MB)
MD5: 5F3F7B9153853FB28E55B84F005B1581
 
Language:Slovenian
Typology:1.01 - Original Scientific Article
Organization:Logo SciVie - Slovenian Forestry Institute
Abstract:Sušni stres sproži tako pri drobnih koreninah dreves kot pri ektomikoriznih glivah številne spremembe na različnih nivojih. Drevesa se branijo pred sušo z mehanizmi izogibanja in tolerance. Suša lahko vpliva na kolonizacijo z ektomikoriznimi glivami in na strukturo ektomikorizne združbe. Pomembno vlogo pri preživetju mladja ob suši imajo skupne micelijske mreže. Ob zmerni suši je kolonizacija z ektomikoriznimi glivami večja kot ob ekstremni suši, kar ima za drevo številne pozitivne učinke. V sušnih razmerah se pogosto še posebej poveča pogostnost ektomikorizne vrste Cenococcum geophilum Fr., ki omogoča, da drobne korenine ostanejo funkcionalne in takoj po končanem sušnem obdobju pričnejo z absorpcijo vode. V sušnih razmerah se poveča tvorba težko razgradljivih molekul v koreninah (lignin), prav tako pa se težko razgradljive molekule (melanin) tvorijo tudi pri ektomikorizni vrsti C. geophilum, kar prispeva h kopičenju težko razgradljivih organskih snovi v tleh.
Keywords:globalne spremembe, drobne korenine, mikorizne glive, prilagoditve, organska snov v tleh
Publication status:Published
Publication version:Version of Record
Year of publishing:2019
Number of pages:str. 1-12
Numbering:Vol. 120
PID:20.500.12556/DiRROS-10446 New window
UDC:630*16:630*18(045)=163=111
ISSN on article:2335-3112
DOI:10.20315/ASetL.120.1 New window
COBISS.SI-ID:5568166 New window
Note:Vzpor. besedilo v slov. in angl.;
Publication date in DiRROS:29.11.2019
Views:8550
Downloads:2917
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Record is a part of a journal

Title:Acta Silvae et Ligni
Publisher:Gozdarski inštitut Slovenije, založba Silva Slovenica, Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire, Biotehniška fakulteta, Oddelek za lesarstvo
ISSN:2335-3112
COBISS.SI-ID:266761216 New window

Document is financed by a project

Funder:EC - European Commission
Funding programme:FP7
Project number:315982
Name:European Forest Research and Innovation
Acronym:EUFORINNO

Secondary language

Language:English
Title:Effects of drought on tree fine roots and ectomycorrhiza in forest ecosystems
Abstract:Drought stress elicits many changes in tree fine roots and ectomycorrhizal fungi. Trees cope with drought through avoidance mechanisms or tolerance. Drought can result in changes in colonization by ectomycorrhizal fungi and in the structure of ectomycorrhizal communities. Survival of tree seedlings is supported through common mycelium networks. In moderate drought, there is greater colonization by ectomycorrhizal fungi compared to severe drought, resulting in several beneficial effects to the tree. Under drought, the frequency of ectomycorrhizal fungus Cenococcum geophilum Fr. often increases. C. geophilum sustains tree fine roots function and therefore roots are able to absorb water as soon as the drought period is over. Under drought, synthesis of recalcitrant organic compounds in roots, e.g. lignine, is increased. Recalcitrant compounds such as melanine are also found in C. geophilum, contributing to the accumulation of recalcitrant soil organic matter.
Keywords:global changes, fine roots, mycorrhizal fungi, adaptation, soil organic matter


Collection

This document is a part of these collections:
  1. Acta Silvae et Ligni

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