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Author Kaiser, Christina ♦ Koranda, Marianne ♦ Kitzler, Barbara ♦ Fuchslueger, Lucia ♦ Schnecker, Jörg ♦ Schweiger, Peter ♦ Rasche, Frank ♦ Zechmeister-Boltenstern, Sophie ♦ Sessitsch, Angela ♦ Richter, Andreas
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher Wiley
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences ♦ Life sciences; biology ♦ Physiology & related subjects ♦ Biochemistry ♦ Natural history of organisms ♦ Microorganisms, fungi & algae ♦ Technology ♦ Medicine & health ♦ Human anatomy, cytology, histology ♦ Human physiology ♦ Pharmacology and therapeutics ♦ Diseases ♦ Manufacture for specific uses ♦ Precision instruments & other devices
Subject Domain (in MeSH) Tissues ♦ Plant Structures ♦ Anatomy ♦ Eukaryota ♦ Bacteria ♦ Organisms ♦ Inorganic Chemicals ♦ Lipids ♦ Complex Mixtures ♦ Chemicals and Drugs ♦ Investigative Techniques ♦ Analytical, Diagnostic and Therapeutic Techniques and Equipment ♦ Physical Phenomena ♦ Chemical Phenomena ♦ Biological Phenomena ♦ Biological Sciences ♦ Natural Science Disciplines ♦ Physical Sciences
Subject Keyword Discipline Botany ♦ Bacteria ♦ Growth & Development ♦ Carbon ♦ Metabolism ♦ Extracellular Space ♦ Enzymology ♦ Fagus ♦ Mycorrhizae ♦ Nitrogen ♦ Seasons ♦ Biological Markers ♦ Biomass ♦ Climate ♦ Microbiology ♦ Phospholipids ♦ Regression Analysis ♦ Soil ♦ Soil Microbiology ♦ Solubility ♦ Temperature ♦ Trees ♦ Journal Article ♦ Research Support, Non-u.s. Gov't
Abstract *Plant seasonal cycles alter carbon (C) and nitrogen (N) availability for soil microbes, which may affect microbial community composition and thus feed back on microbial decomposition of soil organic material and plant N availability. The temporal dynamics of these plant-soil interactions are, however, unclear. *Here, we experimentally manipulated the C and N availability in a beech forest through N fertilization or tree girdling and conducted a detailed analysis of the seasonal pattern of microbial community composition and decomposition processes over 2 yr. *We found a strong relationship between microbial community composition and enzyme activities over the seasonal course. Phenoloxidase and peroxidase activities were highest during late summer, whereas cellulase and protease peaked in late autumn. Girdling, and thus loss of mycorrhiza, resulted in an increase in soil organic matter-degrading enzymes and a decrease in cellulase and protease activity. *Temporal changes in enzyme activities suggest a switch of the main substrate for decomposition between summer (soil organic matter) and autumn (plant litter). Our results indicate that ectomycorrhizal fungi are possibly involved in autumn cellulase and protease activity. Our study shows that, through belowground C allocation, trees significantly alter soil microbial communities, which may affect seasonal patterns of decomposition processes.
Description Country affiliation: Austria
Author Affiliation: Kaiser C ( University of Vienna, Department of Chemical Ecology and Ecosystem Research, Vienna, Austria. christina.kaiser@univie.ac.at)
ISSN 0028646X
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2010-08-01
Publisher Place Great Britain (UK)
e-ISSN 14698137
Journal New Phytologist
Volume Number 187
Issue Number 3


Source: WHO-Global Index Medicus