Elucidating deep-level phylogenetic relationships in Saxifragaceae using sequences for six chloroplastic and nuclear DNA regions
To elucidate relationships at deep levels within Saxifragaceae we analyzed phylogenetically a data set of sequences for six DNA regions, four representing the chloroplast genome (rbcL, matK,…
Bidirectional cytoplasmic and nuclear introgression in the New World cottons, Gossypium barbadense and G. hirsutum (Malvaceae)
- C. Brubaker, Jason A. Koontz, J. Wendel
- Biology
- 1 October 1993
Genetic Diversity and Tests of the Hybrid Origin of the Endangered Yellow Larkspur
- Jason A. Koontz, P. Soltis, S. Brunsfeld
- Environmental Science
- 1 December 2001
Genetic data indicate that both cultivated populations, especially the north Sonoma population, have several allozymes and RAPD markers not found in theWild population and could be used to establish new populations of D. luteum or to enhance the diversity and size of the wild population.
DNA sequence data reveal polyphyly of Brexioideae (Brexiaceae; Saxifragaceae sensu lato)
- Jason A. Koontz, D. Soltis
- BiologyPlant Systematics and Evolution
- 1 September 1999
Molecular data indicate that Brexioideae are a polyphyletic assemblage and component genera should ultimately be incorporated into other groups.
Seed Germination of the Illinois-Threatened Agalinis auriculata (Michx.) Blake (Orobanchaceae)
- B. Molano‐Flores, Jason A. Koontz, Mary Ann Feist
- Environmental Science
- 1 June 2007
Genetic Diversity of the Illinois-threatened Agalinis auriculata (Orobanchaceae) and Two Common Congeners
- B. Molano‐Flores, Jason A. Koontz, M. A. Feist
- Environmental Science
- 1 October 2007
The genetic results of this study in conjunction with ecological studies of A. auriculata in Illinois serve as a springboard for the conservation of the species, not only in Illinois but also throughout its range.
Using Phylogeny Reconstruction to Test Hypotheses of Hybrid Origin in Delphinium Section Diedropetala (Ranunculaceae)
- Jason A. Koontz, P. Soltis, D. Soltis
- Biology
- 1 April 2004
Abstract One-hundred ITS rDNA and 32 trnL-F cpDNA sequences were used to reconstruct the phylogeny of 62 (of 67) species of Delphinium section Diedropetala to test the hypothesized hybrid origins of…
Supporting upper-level undergraduate students in building a systems perspective in a botany course
- Laura Zangori, Jason A. Koontz
- Environmental Science
- 2 October 2017
Abstract Undergraduate biology majors require biological literacy about the critical and dynamic relationships between plants and ecosystems and the effect human-made processes have on these systems.…
Assessing genetic diversity for the USA endemic carnivorous plant Pinguicula ionantha R.K. Godfrey (Lentibulariaceae)
- David N. Zaya, B. Molano‐Flores, M. A. Feist, Jason A. Koontz, J. Coons
- Environmental Science, BiologyConservation Genetics
- 1 February 2017
The observed patterns of genetic diversity suggest that although P. ionantha populations are isolated spatially by distance and both natural and anthropogenic barriers, some gene flow occurs among them or isolation has been too recent to leave a genetic signature.
Physiological studies on a new isolate of the gut fungus, Smittium culisetae (Trichomycetes: Harpellales), from wetland mosquito larvae, Aedes vexans (Diptera: Culicidae)
- Jason A. Koontz
- Biology
- 1 September 2006
Physiological studies were conducted on isolate KS-108-02 to investigate conditions suitable for successful development of the fungus and found some reciprocal effects between growth and sporulation, wherein nitrogen sources that produced higher mycelium dry weight yielded lower sporulation and vice versa.
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