Open Access. Powered by Scholars. Published by Universities.®
- Publication
Articles 1 - 2 of 2
Full-Text Articles in Life Sciences
Reclassification Of North American Haplopappus (Compositae: Astereae) Completed: Rayjacksonia Gen Nov, M. A. Lane, Ronald L. Hartman
Reclassification Of North American Haplopappus (Compositae: Astereae) Completed: Rayjacksonia Gen Nov, M. A. Lane, Ronald L. Hartman
Ronald L Hartman
Rayjacksonia R. L. Hartman & M. A. Lane, gen. nov. (Compositae: Astereae), is named to accommodate the ''phyllocephalus complex,'' formerly of Haplopappus Cass. sect. Blepharodon DC. The new combinations are R. phyllocephalus (DC.) R. L. Hartman & M. A. Lane, R. annua (Rydb.) R. L. Hartman & M. A. Lane, and R. aurea (A. Gray) R. L. Hartman & M. A. Lane. This transfer completes the reclassification of the North American species of Haplopappus sensu Hall, leaving that genus exclusively South American. Rayjacksonia has a base chromosome number of x = 6. Furthermore, it shares abruptly ampliate disk corollas, deltate …
Comparative Sequence Analysis Of Fatty Acid Desaturase 2 (Fad2) Cdna Sequences From The Compositae [Asteraceae], Paul Ames Muller Jr.
Comparative Sequence Analysis Of Fatty Acid Desaturase 2 (Fad2) Cdna Sequences From The Compositae [Asteraceae], Paul Ames Muller Jr.
Paul Muller
Fatty acid desaturases are enzymes capable of modifying carbon-carbon bonds within fatty acids. All higher plants contain one or more oleic acid desaturases that catalyze insertion of a double bond between carbons 12 and 13 of oleic acid to produce linoleic acid, an unsaturated fatty acid. However, this family of enzymes may vary in specificity and are responsible for a wide spectrum of unsaturated fatty acids found in nature that play important ecological, physiological, and industrial roles. Here, I examine nucleotide sequence evolution and predict structural changes of translated expressed Fatty Acid Desaturase 2 (FAD2) cDNA sequences in the Compositae …