Molecular evolution and phylogenetic implications of internal transcribed spacer sequences of Ribosomal DNA in Winteraceae
The internal transcribed spacers and the 5.8S coding region of nuclear ribosomal DNA were sequenced and analyzed to address questions of generic relationships in Winteraceae. The molecular data…
Molecular phylogeny of the Magnoliaceae: the biogeography of tropical and temperate disjunctions.
- H. Azuma, J. García-Franco, V. Rico‐Gray, L. B. Thien
- Environmental ScienceAmerican-Eurasian journal of botany
- 1 December 2001
A molecular phylogenetic analysis of the Magnoliaceae, a former boreotropical element that currently contains both tropical and temperate disjuncts, indicates the tropical American section Talauma branched first, followed by the tropical Asian clade and the West Indies clade.
FLORAL BIOLOGY OF MAGNOLIA
- L. B. Thien
- 1 November 1974
The floral biology of eight species of Magniolia native to the United States is described and it is suggested that the flowers of Magnolia are highly specialized for exclusive pollination by beetles.
A Conserved Motif in the 5.8S Ribosomal RNA (rRNA) Gene is a Useful Diagnostic Marker for Plant Internal Transcribed Spacer (ITS) Sequences
A conserved 14 base pair motif in the 5.8S rRNA gene is described that can be used to differentiate between flowering plants, bryophytes, and several orders of algae and fungi, including common plant pathogenic and non-pathogenic fungi.
Molecular Phylogeny of Magnolia (Magnoliaceae) Inferred from cpDNA Sequences and Evolutionary Divergence of the Floral Scents
A molecular phylogeny of Magnoliaceae was constructed to reveal phylogenetic relationships of taxa by sequencing the trnK intron, psbA-trnH, and atpB-rbcL intergenic spacer regions of chloroplast DNA from 25 Magnolia, two Michelia, and two Liriodendron taxa.
Pollination biology of basal angiosperms (ANITA grade).
It is hypothesized that large flowers in Nymphaeaceae are the result of the interaction of heat, floral odors, and colored tepals to trap insects to increase fitness.
New Perspectives on the Pollination Biology of Basal Angiosperms
- L. B. Thien, H. Azuma, S. Kawano
- Environmental Science, BiologyINTERNATIONAL JOURNAL PLANT SCIENCES
- 1 November 2000
Coleoptera and Diptera are the primary pollinators of extant basal angiosperms (wind pollination is rare); lineages of these insects were established by the Late Jurassic. Contemporary examples of…
The pollination of Trimenia moorei (Trimeniaceae): floral volatiles, insect/wind pollen vectors and stigmatic self-incompatibility in a basal angiosperm.
The structural analyses of pollen-carpel interactions indicate that T. moorei has a trichome-rich dry- type stigma with an early-acting self-incompatibility (SI) system, the first species within the ANITA group, and second within reilictual-basal angiosperm lineages, to exhibit stigmatic SI in combination with dry-type stigma and bicellular pollen.
The floral biology of Arethusa bulbosa, Calopogon tuberosus, and Pogonia ophioglossoides (Orchidaceae)
The reproductive biology of Arethusa bulbosa, Calopogon tuberosus, and Pogonia ophioglossoides was studied in northern Wisconsin and suggested convergence is suggested mainly by the size of the flowers, pink-magenta perianth, lips with yellow-white brushes, and strong absorption of ultraviolet light by the lip brushes.