Advanced search

Nonrandom spatial structuring of orchids in a hybrid zone of three Orchis species

(2012) NEW PHYTOLOGIST. 193(2). p.454-464
Author
Organization
Abstract
Nonrandom ?speciesspecies associations may arise from a range of factors, including localized dispersal, intra- and interspecific interactions and heterogeneous environmental conditions. Because seed germination and establishment in orchids are critically dependent upon the availability of suitable mycorrhizal fungi, speciesspecies associations in orchids may reflect associations with mycorrhizal fungi. To test this hypothesis, we examined spatial association patterns, mycorrhizal associations and germination success in a hybrid zone containing three species of the genus Orchis (Orchis anthropophora, Orchis militaris and Orchis purpurea). Hybridization occurred predominantly between O. purpurea and O. militaris. The spatial distribution patterns of most pure species and hybrids were independent from each other, except that of O. purpurea and its hybrids. The fungal community composition of established individuals differed significantly between pure species, but not between hybrids and O. purpurea. Seed germination experiments using pure seeds showed that the highest number of protocorms were found in regions where adult individuals were most abundant. In the case of hybrid seeds, germination was restricted to areas where the mother plant was most abundant. Overall, these results suggest that the observed nonrandom spatial distribution of both pure and hybrid plants is dependent on the contingencies of the spatial distribution of suitable mycorrhizal fungi.
Keywords
spatial point pattern analysis, seed germination, Orchidaceae, mycorrhizal fungi, hybridization, MULTILOCUS GENOTYPE DATA, SYMBIOTIC GERMINATION, GENETIC-STRUCTURE, MYCORRHIZAL ASSOCIATIONS, REPRODUCTIVE ISOLATION, SEEDLING RECRUITMENT, TERRESTRIAL ORCHIDS, IN-SITU, POPULATION, HYBRIDIZATION

Citation

Please use this url to cite or link to this publication:

Chicago
Jacquemyn, Hans, Rein Brys, Olivier Honnay, Isabel Roldàn-Ruiz, Bart Lievens, and Thorsten Wiegand. 2012. “Nonrandom Spatial Structuring of Orchids in a Hybrid Zone of Three Orchis Species.” New Phytologist 193 (2): 454–464.
APA
Jacquemyn, Hans, Brys, R., Honnay, O., Roldàn-Ruiz, I., Lievens, B., & Wiegand, T. (2012). Nonrandom spatial structuring of orchids in a hybrid zone of three Orchis species. NEW PHYTOLOGIST, 193(2), 454–464.
Vancouver
1.
Jacquemyn H, Brys R, Honnay O, Roldàn-Ruiz I, Lievens B, Wiegand T. Nonrandom spatial structuring of orchids in a hybrid zone of three Orchis species. NEW PHYTOLOGIST. 2012;193(2):454–64.
MLA
Jacquemyn, Hans, Rein Brys, Olivier Honnay, et al. “Nonrandom Spatial Structuring of Orchids in a Hybrid Zone of Three Orchis Species.” NEW PHYTOLOGIST 193.2 (2012): 454–464. Print.
@article{8096157,
  abstract     = {Nonrandom ?speciesspecies associations may arise from a range of factors, including localized dispersal, intra- and interspecific interactions and heterogeneous environmental conditions. Because seed germination and establishment in orchids are critically dependent upon the availability of suitable mycorrhizal fungi, speciesspecies associations in orchids may reflect associations with mycorrhizal fungi. To test this hypothesis, we examined spatial association patterns, mycorrhizal associations and germination success in a hybrid zone containing three species of the genus Orchis (Orchis anthropophora, Orchis militaris and Orchis purpurea). Hybridization occurred predominantly between O. purpurea and O. militaris. The spatial distribution patterns of most pure species and hybrids were independent from each other, except that of O. purpurea and its hybrids. The fungal community composition of established individuals differed significantly between pure species, but not between hybrids and O. purpurea. Seed germination experiments using pure seeds showed that the highest number of protocorms were found in regions where adult individuals were most abundant. In the case of hybrid seeds, germination was restricted to areas where the mother plant was most abundant. Overall, these results suggest that the observed nonrandom spatial distribution of both pure and hybrid plants is dependent on the contingencies of the spatial distribution of suitable mycorrhizal fungi.},
  author       = {Jacquemyn, Hans and Brys, Rein and Honnay, Olivier and Rold{\`a}n-Ruiz, Isabel and Lievens, Bart and Wiegand, Thorsten},
  issn         = {1469-8137},
  journal      = {NEW PHYTOLOGIST},
  keyword      = {spatial point pattern analysis,seed germination,Orchidaceae,mycorrhizal fungi,hybridization,MULTILOCUS GENOTYPE DATA,SYMBIOTIC GERMINATION,GENETIC-STRUCTURE,MYCORRHIZAL ASSOCIATIONS,REPRODUCTIVE ISOLATION,SEEDLING RECRUITMENT,TERRESTRIAL ORCHIDS,IN-SITU,POPULATION,HYBRIDIZATION},
  language     = {eng},
  number       = {2},
  pages        = {454--464},
  title        = {Nonrandom spatial structuring of orchids in a hybrid zone of three Orchis species},
  url          = {http://dx.doi.org/10.1111/j.1469-8137.2011.03913.x},
  volume       = {193},
  year         = {2012},
}

Altmetric
View in Altmetric
Web of Science
Times cited: