TY - JOUR
T1 - Effects of Sand Deposition on the Interaction between Ammophila-Arenaria, Plant-Parasitic Nematodes, and Pathogenic Fungi
AU - De Rooij van der Goes, P.C.E.M.
AU - Van der Putten, W.H.
AU - Peters, B.A.M.
N1 - Reporting year: 1995
Metis note: 2092; CTE; TME ; TE file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs1995/DeRooij_ea_2092.pdf
PY - 1995
Y1 - 1995
N2 - Ammophila arenaria is a dominant sand-fixing plant species of the European coastal foredunes. It remains vigorous under regular burial conditions on seaward slopes, but starts to degenerate when sand accumulation diminishes. Several hypotheses have been put forward to explain this degeneration. In this study, we test the hypothesis that upward growth of plants following sand burial enables them to escape harmful soil organisms. Plants in a degenerating field stand of A. arenaria and potted plants grown in sterilized sand (outdoor pot experiment) were buried with sterilized or nonsterilized sand. Burial in both sterilized and nonsterilized sand resulted in stem elongation, increased numbers of living shoots, and increased shoot and root biomass. However, when plants were grown in and buried with sterilized sand, the numbers of shoots were significantly higher than those buried with nonsterilized sand. The new root zone of buried plants was colonized by pathogenic soil organisms (nematodes and fungi) during the same growing season. It is concluded that by upward growth through pathogen-free sand, the plants benefit, at least temporarily, from escaping its pathogens and parasites. [KEYWORDS: Clonal growth; upward growth; migration; soil-borne disease; growth reduction Harmful soil organisms; hippophae-rhamnoides l; growth;breviligulata; succession; ecology]
AB - Ammophila arenaria is a dominant sand-fixing plant species of the European coastal foredunes. It remains vigorous under regular burial conditions on seaward slopes, but starts to degenerate when sand accumulation diminishes. Several hypotheses have been put forward to explain this degeneration. In this study, we test the hypothesis that upward growth of plants following sand burial enables them to escape harmful soil organisms. Plants in a degenerating field stand of A. arenaria and potted plants grown in sterilized sand (outdoor pot experiment) were buried with sterilized or nonsterilized sand. Burial in both sterilized and nonsterilized sand resulted in stem elongation, increased numbers of living shoots, and increased shoot and root biomass. However, when plants were grown in and buried with sterilized sand, the numbers of shoots were significantly higher than those buried with nonsterilized sand. The new root zone of buried plants was colonized by pathogenic soil organisms (nematodes and fungi) during the same growing season. It is concluded that by upward growth through pathogen-free sand, the plants benefit, at least temporarily, from escaping its pathogens and parasites. [KEYWORDS: Clonal growth; upward growth; migration; soil-borne disease; growth reduction Harmful soil organisms; hippophae-rhamnoides l; growth;breviligulata; succession; ecology]
U2 - 10.1139/b95-124
DO - 10.1139/b95-124
M3 - Article
SN - 0008-4026
VL - 73
SP - 1141
EP - 1150
JO - Canadian Journal of Botany-Revue Canadienne De Botanique
JF - Canadian Journal of Botany-Revue Canadienne De Botanique
IS - 8
ER -