منابع مشابه
Do asexual polyploid lineages lead short evolutionary lives? A case study from the fern genus Astrolepis.
A life-history transition to asexuality is typically viewed as leading to a heightened extinction risk, and a number of studies have evaluated this claim by examining the relative ages of asexual versus closely related sexual lineages. Surprisingly, a rigorous assessment of the age of an asexual plant lineage has never been published, although asexuality is extraordinarily common among plants. ...
متن کاملCryptic lineages of the genus Escherichia.
Extended multilocus sequence typing (MLST) analysis of atypical Escherichia isolates was used to identify five novel phylogenetic clades (CI to CV) among isolates from environmental, human, and animal sources. Analysis of individual housekeeping loci showed that E. coli and its sister clade, CI, remain largely indistinguishable and represent nascent evolutionary lineages. Conversely, clades of ...
متن کاملEmersion Induces Nitrogen Release and Alteration of Nitrogen Metabolism in the Intertidal Genus Porphyra
We investigated emersion-induced nitrogen (N) release from Porphyra umbilicalis Kütz. Thallus N concentration decreased during 4 h of emersion. Tissue N and soluble protein contents of P. umbilicalis were positively correlated and decreased during emersion. Growth of P. umbilicalis did not simply dilute the pre-emersion tissue N concentration. Rather, N was lost from tissues during emersion. We...
متن کاملSupplementary material for A RESPONSE TO MAYROSE ET AL. (2014) AND THE FATE OF POLYPLOID LINEAGES
Min. Mean Std. dev. Median Max. posterior mean of λD 0.0698 0.2016 0.0447 0.2009 0.3468 MLE of λD 0 0.214 0.103 0.1893 0.8542 posterior mean of λP 0.0526 0.1899 0.0638 0.1892 0.4135 MLE of λP 0 0.1876 0.1427 0.1579 0.7812 posterior mean of μD 0.032 0.0968 0.0397 0.0905 0.251 MLE of μD 0 0.1182 0.1469 0.072 0.8741 posterior mean of μP 0.0277 0.1779 0.0936 0.1601 0.5755 MLE of μP 0 0.2108 0.3619 ...
متن کاملEvolution of hypervariable microsatellites in apomictic polyploid lineages of Ranunculus carpaticola: directional bias at dinucleotide loci.
Microsatellites are widely used in genetic and evolutionary analyses, but their own evolution is far from simple. The mechanisms maintaining the mutational patterns of simple repeats and the typical stable allele-frequency distributions are still poorly understood. Asexual lineages may provide particularly informative models for the indirect study of microsatellite evolution, because their geno...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2018
ISSN: 2045-2322
DOI: 10.1038/s41598-018-26796-5