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Topic: Magnoliid


In the News (Tue 7 Oct 08)

  
  BioMed Central | Full text | Complete plastid genome sequences of Drimys, Liriodendron, and Piper: implications for ...
Finally, a third possible resolution of relationships among magnoliids, monocots, and eudicots was recovered in two other studies based on phytochrome genes [3] and 17 plastid genes [6].
These studies suggested that magnoliids were sister to a clade that included monocots and eudicots, however, support for this relationship had only weak or moderate bootstrap support (< 50% in Mathews and Donoghue [3] and 76 or 83% in Graham and Olmstead [6]).
Expansion and contraction of the IR is a common phenomenon in land plant plastid genomes [34] with the IR ranging in size from 9,589 bp in the moss Physcomitrella [35] to 75,741 bp in the highly rearranged angiosperm genome of Pelargonium [36,37].
www.biomedcentral.com /1471-2148/6/77   (8171 words)

  
 Fossil Record of the Anthophyta
The Paleoherb Hypothesis suggests that the basal lineages were herbs with rapid lifecycles, while the Magnoliid Hypothesis suggests that the basal lineages were small trees with slower lifecycles.
The Woody Magnoliid Hypothesis -- Cladistic analyses by Doyle and Donoghue favor an early angiosperm with morphology similar to living members of the Magnoliales and Laurales.
While the phylogeny for angiosperms presented on our server follows that favored by the Woody Magnoliid Hypothesis, it should be noted that this issue is far from settled.
www.ucmp.berkeley.edu /anthophyta/anthophytafr.html   (776 words)

  
 Magnoliales
CERATOPHYLLALES, CHLORANTHALES, MAGNOLIIDS [MONOCOTS + EUDICOTS]: carpels plicate; embryo sac bipolar, 8 nucleate; endosperm triploid.
CHLORANTHALES + MAGNOLIIDS [MONOCOTS + EUDICOTS]: benzylisoquinoline alkaloids +.
Although the sister group relationship of Piperales with Canellales in particular is at first sight unexpected, the magnoliid clade as a whole and the relationships within the group are turning out to be robust.
www.mobot.org /MOBOT/Research/APweb/orders/magnolialesweb.htm   (3994 words)

  
 Angiosperms
It was long suspected that the "dicots" as traditionally recognized represents multiple evolutionary lineages, and the nonmonophyly of dicots based on molecular data precludes their recognition in current classifications (e.g., APG II, 2003).
Although the component families of the magnoliid clade were loosely associated in previous classifications, for example, as Cronquist's (1981) subclass Magnoliidae, relationships among the families were not clear.
Some phylogenetic analyses weakly support a grouping of magnoliids as sister to the eudicots, although more data are necessary to clarify this relationship.
tolweb.org /Angiosperms/20646   (5241 words)

  
 Ceratophyllales
CERATOPHYLLALES + CHLORANTHALES + MAGNOLIIDS [MONOCOTS + EUDICOTS]: carpels plicate, occlusion by congenital fusion; embryo sac bipolar, 8 nucleate; endosperm triploid.
the magnoliid clade; Chloranthales, eudicots, and monocots are the other clades involved.
If Ceratophyllaceae are sister to monocots, "plant herbaceous; primary root at best weak; vascular bundles in stem closed [no interfascicular cambium developing]; vessels in stem and leaves 0; (leaf margin spiny toothed); microsporogenesis successive" might be a set of synapomorphies for the combined clade.
www.mobot.org /MOBOT/Research/APweb/orders/ceratophyllalesweb.htm   (615 words)

  
 Two new fossil flowers of magnoliid affinity from the Late Cretaceous of New Jersey -- Crepet and Nixon 85 (9): 1273 -- ...
Two new fossil flowers of magnoliid affinity from the Late Cretaceous of New Jersey -- Crepet and Nixon 85 (9): 1273 -- American Journal of Botany
other than illustrating that these fossils are generalized magnoliids.
Additional analysis of modern and fossil magnoliids is necessary
www.amjbot.org /cgi/content/abstract/85/9/1273   (425 words)

  
  When Did Angiosperms First Evolve?
, 1975; Walker, 1976), there are extant magnoliid dicots with non-columellar monosulcate pollen distinguishable from that of gymnosperms only by TEM studies of endexine structure which may represent relicts of a still earlier, pre-columellar phase of angiosperm evolution not yet recognized (though not necessarily lacking!) in the fossil record." (Doyle, 1977, p.
Strong support is reported for monocots and eudicots as sister clades with magnoliids diverging before the monocot-eudicot split.
The diversity of pollen morphology and exine structure in primitive extant magnoliids implies that "granular" exines in the Magnoliales are probably derived, an implication supported by molecular data (Martin et al.
www.unifiedworlds.com /cornet/Why02/why.htm   (12355 words)

  
 Two new fossil flowers of magnoliid affinity from the Late Cretaceous of New Jersey -- Crepet and Nixon 85 (9): 1273 -- ...
group that is the sister group of a clade of magnoliids that
———, E. Friis, and K. Pedersen.1994.Palaeobotanical evidence on the early radiation of magnoliid angiosperms.
Ward, J. Doyle, and C. Hotton.1989.Probable granular magnoliid angiosperm pollen from the Early Cretaceous.
www.amjbot.org /cgi/content/full/85/9/1273   (5268 words)

  
 MAGNOLIID DICOT FAMILY: definition, pronunciation, meaning. What does magnoliid dicot family mean? - AudioEnglish.net ...
Familiarity information: MAGNOLIID DICOT FAMILY used as a noun is very rare.
Hypernyms ("magnoliid dicot family" is a kind of...):
Magnoliidae; ranalian complex; subclass Magnoliidae (a group of families or trees and shrubs and herbs having well-developed perianths and apocarpous ovaries and generally regarded as the most primitive extant flowering plants; contains 36 families including Magnoliaceae and Ranunculaceae; sometimes classified as a superorder)
www.audioenglish.net /dictionary/magnoliid_dicot_family.htm   (400 words)

  
 MAGNOLIID DICOT GENUS: definition, pronunciation, meaning. What does magnoliid dicot genus mean? - AudioEnglish.net ...
Familiarity information: MAGNOLIID DICOT GENUS used as a noun is very rare.
Hypernyms ("magnoliid dicot genus" is a kind of...):
Calycanthus; genus Calycanthus (a magnoliid dicot genus of the family Calycanthaceae including: allspice)
www.audioenglish.net /dictionary/magnoliid_dicot_genus.htm   (780 words)

  
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car-dealership-detroit-new.linksopen.com   (872 words)

  
 IngentaConnect Araripia florifera, a magnoliid angiosperm from the Lower Cretace...   (Site not responding. Last check: 2007-10-29)
IngentaConnect Araripia florifera, a magnoliid angiosperm from the Lower Cretace...
Araripia florifera, a magnoliid angiosperm from the Lower Cretaceous Crato Formation (Brazil)
Article copyright remains with the publisher, society or author(s) as specified within the article.
www.ingentaconnect.com /content/els/00346667/2003/00000126/00000003/art00092   (95 words)

  
 EEB271 Lab#10: Dicots I-II (Basal Families; Magnoliid complex)
EEB271 Lab#10: Dicots I-II (Basal Families; Magnoliid complex)
Data for previous years may contain errors as strict notation of lab# & lab name was not always recorded.
    - Dicots I-II, Magnoliid Complex and Paleo-herbs
florawww.eeb.uconn.edu /eeb271/10.html   (253 words)

  
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 home page
Library research on the Tertiary fossil history of angiosperms is conducted to compliment research findings of the vicariance paleobiology of ancestral populations of modern flowering plant genera...
[ Living "Fossil" Magnoliids: Degeneriaceae of Fiji ]
The family Degeneriaceae has been cited in classic work on the origin of flowering plants as "living fossil angiosperms." The reader may wish to follow this link to a beautifully illustrated specimen of masiratu (Degeneria vitiensis) by former University of the South Pacific colleague and freelance photographer Dr. Paddy Ryan.
www.gigantopteroid.org   (1542 words)

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