Topic
Anemonopsis
About: Anemonopsis is a research topic. Over the lifetime, 8 publications have been published within this topic receiving 336 citations.
Papers
1 Jan 1995
TL;DR: The pattern of relationships based on sequence data supports the view that staminodia/petals and achenes have evolved independently several times within the Ranunculaceae.
Abstract: The chloroplast genes atpB and rbcL and nuclear ribosomal 18S DNA were sequenced for 23 genera of the Ranunculaceae and two outgroup taxa (Hydrastis and Glaucidium). The three sequence data sets were combined and the resulting preliminary phylogenetic tree used to assess relationships within the Ranunculaceae. The phylogeny strongly supports the monophyly of the family, with 26 substitutions, a bootstrap value of 98% and a decay index of > 7. Within the family, the T-type chromosome group is basal and paraphyletic with respect to the larger R-type chromosome group. Within the T-type chromosome group, Coptis and Xanthorhiza from a monophyletic group and are basal to all other Ranunculaceae. Other alliances previously proposed by taxonomists are confirmed: Anemonella/Thalictrum/ lsopyrum/Aquilegia/Semiaquilegia; Anemone/Clematis, Trautvetteria/ Myosurus/Ranunculus; Aconitum/Delphinium; and Anemonopsis/Cimicifugal/Actaea. Other groupings that could not have been predicted on the basis of traditional data include a clade consisting of Adonis and Trollius and the inclusion of Eranthis in a clade with Anemonopsis, Cimicifuga, and Actaea. Nigella is weakly allied with a clade consisting of Aconitum and Delphinium. The molecular sequence data are largely congruent with results based on cytology, phytochemistry, and micromorphology. Flower and fruit characters are homoplastic in relation to the cladogram based on sequence data. The pattern of relationships based on sequence data supports the view that staminodia/petals and achenes have evolved independently several times within the Ranunculaceae.
127 citations
TL;DR: This study shows that pollen availability in itself can be a significant component in determining bee behavior and allows the bees to select well-rewarding flowers rapidly without alighting.
Abstract: Workers of the bumble bees Bombus honshuensis Perez and B. diversus Smith visit flowers of Anemonopsis macrophylla (Ranunculaceae) for pollen. Their visitation patterns suggest that they use age-related morphological differences in the flowers to discriminate in favor of young, pollen-rich flowers. This ability allows the bees to select well-rewarding flowers rapidly without alighting. Discriminatory behavior has previously been demonstrated in bees among nectar flowers; such flowers often also provide pollen. This study shows that pollen availability in itself can be a significant component in determining bee behavior.
28 citations
TL;DR: In these analyses the positions of both Beesia and Eranthis were well supported within the tribe Actaeeae by each analysis and Beesia calthifolia was sister to Anemonopsis macrophylla on a strongly supported clade.
Abstract: The phylogenetic positions of the genera Beesia and Eranthis were investigated with respect to seven species in two genera, representing the tribe Actaeeae and five species in five other Ranunculaceae genera as outgroup. Maximum parsimony analyses were performed separately on nuclear ribosomal DNA ITS, plastid trnL-F, and combined DNA sequence data. In these analyses the positions of both Beesia and Eranthis were well supported within the tribe Actaeeae by each analysis and Beesia calthifolia was sister to Anemonopsis macrophylla on a strongly supported clade. Tribe Actaeeae is redefined to include Actaea, Anemonopsis, Beesia, and Eranthis. Communicating Editor: John V. Freudenstein
18 citations
TL;DR: Ovule deployment patterns were studied in Anemonopsis macrophylla Sieb.
Abstract: Ovule deployment patterns were studied inAnemonopsis macrophylla Sieb. & Zucc. to develop hypotheses about major selective forces underlying different temporal strategies. Carpel number per flower decreased significantly with relative flowering date. The trend was present at individual, population, and among-population, levels. Both ovule number per carpel and ripe seed weight decreased with later flowering date. Such temporal allocation patterns may be adaptive in late-flowering species with extended flowering patterns, because successively later flowers run a higher risk of lower resource availability and premature death due to deteriorating climatic conditions.
10 citations
TL;DR: Close biogeographical examination and comparison of the areas with ecological peculiarities as well as climate data gave important insight into the phylogeny ofActaea and the whole tribe.
Abstract: Phylogenetic analyses of the genusActaea were performed using morphological, ecological and biogeographical characters. Using solely morphological characters, the relationships of the three identified species-groups remain uncertain. Close biogeographical examination and comparison of the areas with ecological peculiarities as well as climate data gave important insight into the phylogeny ofActaea and the whole tribe. Consequently, the obtained biogeographical data were used for phylogenetic reconstructions. Both, from the point of view of morphological and biogeographical data,A. pachypoda andA. asiatica are the most ancestral species. They grow on the east sides of the continents, mainly in broad-leaved forests. In West Eurasia the apomorphicA. spicata andA. acuminata occur under similar climatic and ecological conditions, but these species are adapted to another climate rhythm. The most advanced species (A. erythrocarpa, A. rubra) are to be found in the boreal forests where they are widely distributed. This biogeographical approach revealed that the evolution of the species led to a gradual widening and shifting of their ecological constitutions.
8 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
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| 2021 | 1 |
| 2009 | 1 |
| 1999 | 1 |
| 1998 | 2 |
| 1995 | 1 |
| 1988 | 1 |