Document Detail

The phylogenetic significance of the carpophore in Apiaceae.
MedLine Citation:
PMID:  22966116     Owner:  NLM     Status:  MEDLINE    
BACKGROUND AND AIMS: Fruit structural characters have traditionally been important in the taxonomy of the family Apiaceae. Previous investigations using a limited number of taxa have shown that the carpophore may be especially useful in helping to circumscribe subfamily Azorelloideae. The present study examines, for the first time, carpophore structure in 92 species from 43 genera, representing all subfamilies of Apiaceae, and including all genera assigned to subfamily Azorelloideae. Phylogenetic interpretations are made for the first time, using all available information, and a standard terminology is proposed to describe the various character states found in carpophores.
METHODS: Carpophore structure was studied in detail using light microscopy.
KEY RESULTS: Carpophores, when present, may be categorized into two main groups (B and C) based mainly on the arrangement of the vascular bundles in transverse section, and further divided into six sub-types according to the length of the carpophore (short in B1 and C1) and whether they are entire (B1-B3 and C1) or bifurcate (B4 and C2). Free carpophores are absent in subfamily Mackinlayoideae, and in tribes Lichtensteinieae and Phlyctidocarpeae, which have two opposite vascular bundles (Group A). Entire carpophores with one or two vascular bundles, or bifurcate carpophores with lateral vascular bundles (arranged side by side within the commissural plane), are the main types characterizing Azorelloideae. The short, hygroscopic carpophores found in Choritaenia are unique in Apiaceae and provide additional evidence for the exclusion of this genus from Azorelloideae. Carpophore type C2 is typical for most Apioideae sensu lato (exceptions are, for example, Arctopus and Alepidea, which have type B2).
CONCLUSIONS: A single carpophore and ventral vascular bundles not forming free carpophores are proposed to be the ancestral conditions in Apiaceae, while bifurcate carpophores with opposite vascular bundles are the derived state, present in most Apioideae. Secondary reductions seem to have occurred in several unrelated lineages in all major groups, e.g. many Azorelloideae, several protoapioids (including nearly all members of the tribe Saniculeae) and 29 euapioid genera (e.g. some Oenantheae).
Mei Liu; Gregory M Plunkett; Ben-Erik Van Wyk; Patricia M Tilney; Porter P Lowry
Related Documents :
21394226 - The mouse as a model system to study cardiac regeneration.
15362136 - Quantum-connectivity descriptors in modeling solubility of environmentally important or...
15199946 - Typology of secondary cyanobacterial metabolites from minimum spanning tree analysis.
12924586 - Quantitative structure-activity relationships for predicting percutaneous absorption ra...
25142756 - Measurement biases explain discrepancies between the observed and simulated decadal var...
3843506 - Development of an acceptable factor to estimate chronic end points from acute toxicity ...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2012-09-10
Journal Detail:
Title:  Annals of botany     Volume:  110     ISSN:  1095-8290     ISO Abbreviation:  Ann. Bot.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-11-22     Completed Date:  2013-04-24     Revised Date:  2013-12-05    
Medline Journal Info:
Nlm Unique ID:  0372347     Medline TA:  Ann Bot     Country:  England    
Other Details:
Languages:  eng     Pagination:  1531-43     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Apiaceae / anatomy & histology,  classification*
Biological Evolution
Fruit / anatomy & histology,  classification*
Plant Vascular Bundle / anatomy & histology,  classification

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Pay-for-performance in the United Kingdom: impact of the quality and outcomes framework: a systemati...
Next Document:  Genetic relatedness of infecting and reinfecting respiratory syncytial virus strains identified in a...