Allopolyploid speciation in Persicaria (Polygonaceae): Insights from a low-copy nuclear region

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Allopolyploid speciation in Persicaria (Polygonaceae): insights from a low-copy nuclear region.

Using a low-copy nuclear gene region (LEAFY second intron) we show multiple instances of allopolyploid speciation in Persicaria (Polygonaceae), which includes many important weeds. Fifteen species seem to be allopolyploids, which is higher than the number found in previous comparisons of chloroplast DNA and nuclear ribosomal internal transcribed spacer (nrITS) phylogenies. This underestimation ...

متن کامل

Molecular phylogeny of Persicaria (Persicarieae, Polygonaceae)

Relationships within the Polygonaceae have been recently examined using rbcL sequences, with an emphasis on Polygonum and its segregates. Here we test these results with respect to Polygonum (sensu lato) with an expanded dataset, including additional species and gene regions. Specifically, we focus on inferring the relationships of Eupersicaria (Polygonum sect. Persicaria in many prior treatmen...

متن کامل

On the resurrection of Persicaria puritanorum (Polygonaceae)

Pond populations in Cape Cod described as Persicaria puritanorum (≡ Polygonum puritanorum) have been treated by recent authors as a synonym of P. maculosa (≡ Polygonum persicaria) based on gross morphology. However, consistent differences in leaf and inflorescence features raise the question as to whether this is an extreme phenotype of P. maculosa, an ecotype of that species, or a distinct tax...

متن کامل

Ancient allopolyploid speciation in Geinae (Rosaceae): evidence from nuclear granule-bound starch synthase (GBSSI) gene sequences.

A nuclear low-copy gene phylogeny provides strong evidence for the hybrid origin of seven polyploid species in Geinae (Rosaceae). In a gene tree, alleles at homologous loci in an allopolyploid species are expected to be sisters to orthologues in the ancestral taxa rather than to each other. Alleles at a duplicated locus in an autopolyploid, however, are expected to be more closely related to ea...

متن کامل

Bidirectional interlocus concerted evolution following allopolyploid speciation in cotton (Gossypium).

Polyploidy is a prominent process in plant evolution; yet few data address the question of whether homeologous sequences evolve independently subsequent to polyploidization. We report on ribosomal DNA (rDNA) evolution in five allopolyploid (AD genome) species of cotton (Gossypium) and species representing their diploid progenitors (A genome, D genome). Sequence data from the internal transcribe...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2008

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.0805141105