A deep dive into the ancestral chromosome number and genome size of flowering plants
نویسندگان
چکیده
منابع مشابه
Ancestral chromosomal blocks are triplicated in Brassiceae species with varying chromosome number and genome size.
The paleopolyploid character of genomes of the economically important genus Brassica and closely related species (tribe Brassiceae) is still fairly controversial. Here, we report on the comparative painting analysis of block F of the crucifer Ancestral Karyotype (AK; n = 8), consisting of 24 conserved genomic blocks, in 10 species traditionally treated as members of the tribe Brassiceae. Three ...
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B chromosomes are extra chromosomes found in some, but not all, individuals within a species, often maintained by giving themselves an advantage in transmission, i.e. they drive. Here we show that the presence of B chromosomes correlates to and varies strongly and positively with total genome size (excluding the Bs and corrected for ploidy) both at a global level and via a comparison of indepen...
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15 صفحه اولThe Amborella genome and the evolution of flowering plants.
Amborella trichopoda is strongly supported as the single living species of the sister lineage to all other extant flowering plants, providing a unique reference for inferring the genome content and structure of the most recent common ancestor (MRCA) of living angiosperms. Sequencing the Amborella genome, we identified an ancient genome duplication predating angiosperm diversification, without e...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2020
ISSN: 0028-646X,1469-8137
DOI: 10.1111/nph.16668