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  Topic: The evolution of coloration in fungi, are brightly colored fungi aposematic?< Next Oldest | Next Newest >  

Posts: 1896
Joined: Jan. 2006

(Permalink) Posted: June 28 2007,17:27   

Perhaps this makes more sense:
Molecular systematic studies of the Agaricales have radically transformed our interpretations of the evolution and classification of gilled mushrooms and their relatives (Hibbett et al. 1997; Moncalvo et al. 2000, 2002; Matheny et al. 2006). The overwhelming majority of species produces fruit bodies with gills (lamellae), but the evolution of gills has arisen numerous times in the Agaricomycetes (Hibbet et al. 1997). Likewise, multiple lineages of “gasteromycetes” (puffballs, bird’s nest fungi, false truffles), species that produce spores in an enclosed fruiting structure, have evolved independently among the Agaricales (Peintner et al. 2001). Studies by Bodensteiner et al. (2004), Larsson et al. (2004), and Binder et al. (2005) have shown that some non-gilled fungi, including reduced or cup-like (cyphelloid) forms and crustose or resupinate forms, share their evolutionary histories with numerous lineages of Agaricales, including some lineages that evolved in aquatic or marine environments (Binder et al. 2001; Hibbett and Binder 2001; Binder et al. 2006). In short, the gross morphology of mushroom fruit bodies is highly plastic and often a poor phylogenetic indicator. These and other studies demonstrated that a broad concept of Agaricales (Singer 1986), including boletes, some polypores, and the genera Russula, Lactarius and their allies, does not form a monophyletic group. Thus, the clade containing predominantly genera and families from the suborder Agaricineae (Singer 1986) was labeled the euagarics clade and represents what we currently regard as the Agaricales (Moncalvo et al. 2002). Most family-level relationships based on morphological characters are artificial, but progress is being made to delimit higher-level monophyletic groups with multiple gene data sets (Matheny 2005; Aime et al. 2005; Hofstetter et al. 2002; Binder et al. 2006). Remarkably, new species and genera continue to be described or placed in the order by molecular phylogenetic analyses.
the agarics. Above the agarics isn't much better either but these pages are worth a read.

Molecular markers are more accurate for the mycologist who needs a name but for research on growth, chemical properties, ecological issues and etc. or for amateur mushroom enthusiasts, the fact that morphology is rarely related to molecularly derived phylogenetic trees can be a bit frustrating.

Who said that ev'ry wish would be heard and answered
When wished on the morning star
Somebody thought of that, and someone believed it
Look what it's done so far

The Daily Wingnut

  215 replies since June 26 2007,15:36 < Next Oldest | Next Newest >  

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