Evidence of hybridity in invasive watermilfoil ( Myriophyllum ) populations
Open Access
- 29 October 2002
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 99 (23), 14867-14871
- https://doi.org/10.1073/pnas.172391499
Abstract
Invasions of nonindigenous species have caused ecological devastation to natural communities worldwide, yet the biological bases for invasiveness remain poorly understood. Our studies of invasive watermilfoil (Myriophyllum) populations revealed widespread polymorphisms in biparentally inherited nuclear ribosomal DNA sequences, which were not detected in populations of native North American species. Subclones of the polymorphic regions revealed the occurrence of distinct sequences matching those acquired from both nonindigenous and native North American species. Molecular data demonstrate clearly that invasive watermilfoil populations in North America have resulted from hybridization between nonindigenous and native species. These observations suggest that invasiveness in these aggressive aquatic weeds may be linked to heterosis maintained by vegetative propagation.Keywords
This publication has 27 references indexed in Scilit:
- Genetic introgression from distant provenances reduces fitness in local weed populationsJournal of Applied Ecology, 2000
- Benign Environments do not Explain the Increased Vigour of Non-indigenous Plants: A Cross-continental Transplant ExperimentBiocontrol Science and Technology, 1999
- Genetic Introgression of Endemic Taxa by Non‐natives: A Case Study with Leon Springs Pupfish and Sheepshead MinnowConservation Biology, 1997
- Use of a Native Insect as a Biological Control for an Introduced WeedEcological Applications, 1995
- Weevils and Watermilfoil: Did a North American Herbivore Cause the Decline of an Exotic Plant?Ecological Applications, 1995
- matK DNA Sequences and Phylogenetic Reconstruction in Saxifragaceae s. str.Systematic Botany, 1994
- The effect of feeding by a North American weevil, Euhrychiopsis lecontei, on Eurasian watermilfoil (Myriophyllum spicatum)Aquatic Botany, 1993
- Studies of hybridization and chromosome number variation in aquatic angiosperms: evolutionary implicationsAquatic Botany, 1993
- Saturated NaCI‐CTAB solution as a means of field preservation of leaves for DNA analysesTaxon, 1992
- Rapid Screening Method to Detect Potential Biparental Inheritance of Plastid DNA and Results for Over 200 Angiosperm SpeciesAmerican Journal of Botany, 1988