- -

Natural soil suppressive capacity in a chronosequence of ex-arable fields against three plant pathogenic fungi

RiuNet: Institutional repository of the Polithecnic University of Valencia

Share/Send to

Cited by

Statistics

Natural soil suppressive capacity in a chronosequence of ex-arable fields against three plant pathogenic fungi

Show simple item record

Files in this item

dc.contributor.advisor Mayoral García-Berlanga, Olga es_ES
dc.contributor.advisor Morriën, Elly es_ES
dc.contributor.advisor Van der Putten, Wim H. es_ES
dc.contributor.author Moliner Urdiales, Javier es_ES
dc.date.accessioned 2014-02-21T13:12:37Z
dc.date.available 2014-02-21T13:12:37Z
dc.date.created 2013-07-16
dc.date.issued 2014-02-21
dc.identifier.uri http://hdl.handle.net/10251/35880
dc.description.abstract The restoration of ex-arable fields is a common issue in North-West Europe, having a species rich heathland as a target ecosystem. This is a long process which can take decades due to the different successional stages the system needs to go through. There are many factors playing a role in this secondary succession gradient, as for instance seed bank quality and diversity, abiotic factors as nitrogen or organic matter content and biotic factors as soil biota (which is the living part of the soil and contributes strongly to create the optimal conditions). Soil biota generates a complex soil food web based on multi-trophic interactions, and it has a strong influence in the presence/absence of different species and its abundance, both above and belowground. In this master thesis we wanted to evaluate the importance of soil biota in driving the succession of plants along the restoration process in 9 different ex-arable fields. Mainly, we focused on the effect of different plant pathogenic fungi on early successional wild plant species performance, and whether the impact on the plants is strongly related to the time since agricultural abandonment. The capacity of soil biota to reduce impact of pathogenic fungi on plants is known as suppressive capacity and is mainly expressed in agricultural fields were similar plant species grow generation after generation on the same field. In this study we want to test whether in a natural situation the biotic soil components would also develop from an initial conductive stage to a mature suppressive stage over the course of succession. For this purpose we set up two experiments: the first was a pre-test to find out which plants and fungi were the most appropriate plants and fungal species to be used for the main experiment. In the main experiment we measured the effect of three different fungi (Gaeumannomyces graminis, Botrytiscinerea and Verticillium albo-atrum.) on two plants species (Achillea millefolium and Plantago lanceolata.), on soils from three different successional stages (recent- , mid- and long-term ago taken out of agricultural production). Our hypothesis was that soils belonging to the late successional stage are more suppressive, resulting in lower fungal impact on the plants. We hypothesized that over the course of succession soil biota becomes more diverse and there is more competition due to the fact that easily decomposable organic matter decreases, and suppressiveness might be enhanced undirectly by this fact. The results rejected the hypothesis. Only in the pot where we added Botrytis cinerea there was suppressive capacity by the soil biota on the fungus, but this effect diminished towards later successional soils. The soils showed no soil suppression at all towards the other two soil es_ES
dc.format.extent 34 es_ES
dc.language Inglés es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Ecosystem es_ES
dc.subject Restoration es_ES
dc.subject Pathogenic fungi es_ES
dc.subject Biotic soil components es_ES
dc.subject.classification BOTANICA es_ES
dc.subject.other Licenciatura en Ciencias Ambientales-Llicenciatura en Ciències Ambientals es_ES
dc.title Natural soil suppressive capacity in a chronosequence of ex-arable fields against three plant pathogenic fungi es_ES
dc.type Proyecto/Trabajo fin de carrera/grado es_ES
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia es_ES
dc.description.bibliographicCitation Moliner Urdiales, J. (2013). Natural soil suppressive capacity in a chronosequence of ex-arable fields against three plant pathogenic fungi. http://hdl.handle.net/10251/35880. es_ES
dc.description.accrualMethod Archivo delegado es_ES


This item appears in the following Collection(s)

Show simple item record