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Antonie van Leeuwenhoek

, Volume 110, Issue 9, pp 1207–1218 | Cite as

Fungal decomposers of leaf litter from an invaded and native mountain forest of NW Argentina

  • Romina Daiana FernandezEmail author
  • Natalia Bulacio
  • Analía Álvarez
  • Hipólito Pajot
  • Roxana Aragón
Original Paper

Abstract

The impact of plant species invasions on the abundance, composition and activity of fungal decomposers of leaf litter is poorly understood. In this study, we isolated and compared the relative abundance of ligninocellulolytic fungi of leaf litter mixtures from a native forest and a forest invaded by Ligustrum lucidum in a lower mountain forest of Tucuman, Argentina. In addition, we evaluated the relationship between the relative abundance of ligninocellulolytic fungi and properties of the soil of both forest types. Finally, we identified lignin degrading fungi and characterized their polyphenol oxidase activities. The relative abundance of ligninocellulolytic fungi was higher in leaf litter mixtures from the native forest. The abundance of cellulolytic fungi was negatively related with soil pH while the abundance of ligninolytic fungi was positively related with soil humidity. We identified fifteen genera of ligninolytic fungi; four strains were isolated from both forest types, six strains only from the invaded forest and five strains were isolated only from the native forest. The results found in this study suggest that L. Lucidum invasion could alter the abundance and composition of fungal decomposers. Long-term studies that include an analysis of the nutritional quality of litter are needed, for a more complete overview of the influence of L. Lucidum invasion on fungal decomposers and on leaf litter decomposition.

Keywords

Exotic plants Fungal decomposers Leaf litter Lignocellulolytic activities Ligustrum lucidum Subtropical forest 

Notes

Acknowledgements

This work was supported by Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET-PIP 0372) and Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT-PICT 0480). We thank Fernandez MJ for field assistance, Nanni S for the help with the English version of this manuscript and associate editor and two anonymous reviewers for comments that improved the manuscript. Finally we acknowledge the authorities of Parque Sierra de San Javier for the permissions to conduct this study.

Conflict of interest

The authors declare no conflict of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

Informed consent was obtained from all individual participants included in the study

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Copyright information

© Springer International Publishing Switzerland 2017

Authors and Affiliations

  • Romina Daiana Fernandez
    • 1
    Email author
  • Natalia Bulacio
    • 2
  • Analía Álvarez
    • 2
    • 3
  • Hipólito Pajot
    • 2
  • Roxana Aragón
    • 1
    • 3
  1. 1.Instituto de Ecología Regional (IER, UNT- CONICET)Yerba BuenaArgentina
  2. 2.Planta Piloto de Procesos Industriales Microbiológicos (PROIMI, CONICET)San Miguel De TucumánArgentina
  3. 3.Facultad de Ciencias Naturales e IML (UNT)San Miguel De TucumánArgentina

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