Unraveling reticulate evolution in North American Dryopteris (Dryopteridaceae)
نویسندگان
چکیده
منابع مشابه
Reticulate evolution on a global scale: a nuclear phylogeny for New World Dryopteris (Dryopteridaceae).
Reticulate, or non-bifurcating, evolution is now recognized as an important phenomenon shaping the histories of many organisms. It appears to be particularly common in plants, especially in ferns, which have relatively few barriers to intra- and interspecific hybridization. Reticulate evolutionary patterns have been recognized in many fern groups, though very few have been studied rigorously us...
متن کاملPhylogenetic analyses place the Australian monotypic Revwattsia in Dryopteris (Dryopteridaceae)
Revwattsia fragilis (Watts) D.L. Jones (Dryopteridaceae), originally described as a Polystichum Roth by the pioneer Australian botanist Reverend W.W. Watts in 1914, is a rare epiphytic fern endemic to northeastern Queensland, Australia. Known from only a few populations, it is restricted to tropical rainforests in the Atherton Tablelands. We used the cpDNA markers psbA-trnH, rbcL, rbcL-accD, rp...
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Hybridization between distinct populations or species is increasingly recognized as an important process for generating biodiversity. However, the interaction between hybridization and speciation is complex, and the diverse evolutionary outcomes of hybridization are difficult to differentiate. Here we characterize potential hybridization in a species group of swallowtail butterflies using micro...
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BACKGROUND AND AIMS The taxonomic complexity of Crataegus (hawthorn; Rosaceae, Maleae), especially in North America, has been attributed by some to hybridization in combination with gametophytic apomixis and polyploidization, whereas others have considered the roles of hybridization and apomixis to be minimal. Study of the chemical composition and therapeutic value of hawthorn extracts requires...
متن کاملReconstructing Dryopteris "semicristata" (Dryopteridaceae): Molecular profiles of tetraploids verify their undiscovered diploid ancestor.
UNLABELLED PREMISE OF THE STUDY Discovering missing ancestors is essential to understanding the evolutionary history of biodiversity on Earth. Evidence from extinct species can provide links for reconstructing intricate patterns of reticulate relationships among extant descendents. When fossils are unavailable and other evidence yields competing hypotheses to explain species ancestry, data f...
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ژورنال
عنوان ژورنال: BMC Evolutionary Biology
سال: 2012
ISSN: 1471-2148
DOI: 10.1186/1471-2148-12-104