Genetic variation within nuclear and mitochondrial DNA of Meloidogyne species and host races has been evaluated for the development of root-knot nematode molecular diagnostics. This review summarizes the distinctive features of several useful DNA-based assays for plant-parasitic nematodes, focusing upon the direct application of these procedures for Meloidogyne detection, identification, and sy...

Charles B. Fenster,1,2,3 Silvana Martén-Rodriguez,2,4 and Douglas W. Schemske5,6 1Department of Biology, University of Maryland, College Park, Maryland 20742 2Behavior, Ecology, Evolution and Systematics Program, University of Maryland, College Park, Maryland 20742 3E-mail: [email protected] 4E-mail: [email protected] 5Department of Plant Biology and Kellogg Biological Station, Michigan State Uni...

Centre for Marine Studies, University of Queensland, St Lucia, QLD 4072, Australia Ecosystem Dynamics, Research School of Biological Sciences, Australian National University, Canberra, ACT 0200, Australia Smithsonian Environmental Research Center, PO Box 28, Edgewater, MD 21037, USA Smithsonian Tropical Research Institute, Balboa, Republic of Panamá Department of Plant Ecology and Systematics, ...

botany as anatomy, biochemistry, ecology, genetics, morphology, physiology, and systematics. In the future, plant conservation, with its emphasis on the preservation of rare and endangered species, will undoubtedly also have a significant impact. The most spectacular recent innovations in biotechnology involve improved technology for genetically modifying plants and producing individuals with n...

Sixteen isolates of Colletotrichum were collected from leaves with anthracnose symptoms or leaf spots of twelve wild, cultivated and ornamental plant species from the Guilan, Mazandaran, and Golestan provinces in Northern Iran. Five different species, including C. aenigma, C. gigasporum, C. godetiae, C. karstii, and C. musae were identified based on the DNA sequence data (TUB2, GS, GAPDH). Four...

We briefly review the taxonomy of Abia, and attempt to clarify their systematics by phylogenetic tree reconstructions inferred from three (nuclear and mitochondrial) genes of some West Palaearctic and Nearctic species. The main question which we asked is whether the distinction, made by several authors, of two genera within this group is justified. Based on the species here sampled, our results...

Multivariate analysis provides statistical methods for study of the joint rela­ tionships of variables in data that contain intercorrelations. Because several variables can be considered simultaneously, interpretations can be made that are not possible with univariate statistics. Applications are now common in medicine (117), agriculture (218), geology (50), the social sciences (7, 178, 193), a...

Pythium is a fungus-like genus with worldwide distribution that is found in most terrestrial and aquatic ecosystems. It is a species-rich genus contains important plant pathogenic species. Little is known on the systematics of Pythium in West Azarbaijan province (N.W. Iran). Thus, the aim of this study was to identify 200 isolates collected from different cultivated soils of West Azarbaijan pro...

1Aix Marseille University, CNRS, UMR Chemistry Laboratory Bacterial 7283. 31 Chemin Joseph Aiguier 13009 Marseille Cedex 20, France 2Institute of Systematics, Evolution, Biodiversity ( ISyEB ), CNRS, MNHN , UPMC, EPHE, UPMC Sorbonne University, 57 rue Cuvier, PO Box 50, F-75005 Paris, France 3Team Enzymology of RNA, UR6, UPMC Sorbonne University, 75252 Paris Cedex 05 France 4Laboratory of Plant...