Devlin, B. 1989. Components of seed and pollen yield of Lobelia cardinalis: variation and correlations. American Journal of Botany 76:204-214. Devlin, B., and A. G. Stephenson. 1984. Factors that influence the duration of the staminate and pistillate phases of Lobelia cardinalis flowers. Botanical Gazette 145:323-328. Devlin, B., and A. G. Stephenson. 1985. Sex differential floral longevity, ne...

Thirty-two weeds commonly found in the organic soils of southwestern Quebec were evaluated for host suitability to a local isolate of the northern root-knot nematode Meloidogyne hapla under greenhouse conditions. Galls were observed on the roots of 21 species. Sixteen of the 21 had a reproduction factor (Pf/Pi = final number of M. hapla eggs and juveniles per initial number of M. hapla juvenile...

(S)-Norcoclaurine is the entry compound in benzylisoquinoline alkaloid biosynthesis and is produced by the condensation of dopamine and 4-hydroxyphenylacetaldehyde (4-HPAA) by norcoclaurine synthase (NCS) (EC 4.2.1.78). Although cDNA of the pathogenesis-related (PR) 10 family, the translation product of which catalyzes NCS reaction, has been isolated from Thalictrum flavum, its detailed enzymol...

Molecular clones encoding nine consecutive biosynthetic enzymes that catalyze the conversion of l-dopa to the protoberberine alkaloid (S)-canadine were isolated from meadow rue (Thalictrum flavum ssp glaucum). The predicted proteins showed extensive sequence identity with corresponding enzymes involved in the biosynthesis of related benzylisoquinoline alkaloids in other species, such as opium p...

This paper presents new data on the occurrence of 16 vascular plant species from five Eurasian countries obtained during field explorations, as well taxonomic revisions herbarium materials. Five taxa (<i>Draba fladnizensis</i>, <i>Gentiana orbicularis</i>, <i>Helianthus giganteus</i>, <i>Symphyotrichum cordifolium</i>, <i>Thalictrum alpinum&...

Ordoñez, M. E., and Kolmer, J. A. 2009. Differentiation of molecular genotypes and virulence phenotypes of Puccinia triticina from common wheat in North America. Phytopathology 99:750-758. Wheat leaf rust caused by Puccinia triticina is widely distributed in the wheat growing regions of the United States and Canada, and is subject to selection for virulence phenotype by leaf rust resistance gen...