JMB-HEADER RAS-JOURNALS EIMB Pleiades Publishing

RUS

             

ENG

YearIMPACT-FACTOR
2021  1,540
2020  1,374
2019  1,023
2018  0,932
2017  0,977
2016  0,799
2015  0,662
2014  0,740
2013  0,739
2012  0,637
2011  0,658
2010  0,654
2009  0,570
2008  0,849
2007  0,805
2006  0,330
2005  0,435
2004  0,623
2003  0,567
2002  0,641
2001  0,490
2000  0,477
1999  0,762
1998  0,785
1997  0,507
1996  0,518
1995  0,502
Vol 44(2010) N 6 p. 883-897;
I.A. Milyutina1*, D.V. Goryunov2, M.S. Ignatov3, E.A. Ignatova3, A.V. Troitsky1

The Phylogeny of Schistidium (Bryophyta, Grimmiaceae) Based on the Primary and Secondary Structure of Nuclear rDNA Internal Transcribed Spacers

1Belozersky Institute of Physical and Chemical Biology, Moscow State University, Moscow, 119899 Russia
2Tsytsin Main Botanical Garden, Russian Academy of Sciences, Moscow, 127276 Russia
3Biological Faculty, Moscow State University, Moscow, 119992 Russia

*iramilyutina@yandex.ru
Received - 2010-05-11; Accepted - 2010-06-23

Phylogeny of Schistidium (Bryophyta, Grimmiaceae) was studied by comparing the nucleotide sequences of internal transcribed spacers ITS1-2 of nuclear rDNA and the trnT-trnD region of chloroplast DNA. Phylogenetic trees constructed based on nuclear and chloroplast sequences were consistent, comprising a basal grade and two large clades. Morphological characteristics specific for these clades were described. Secondary structures of ITS1 and ITS2 Schistidium species were modeled using thermodynamic criteria. Four different structures of the longest ITS1 hairpin were identified. These results were used to analyze possible paths of Schistidium evolution. Characteristics of the ITS2 secondary structure support the two major clades recognized in the phylogenetic trees.

Schistidium, ITS, trnT-D, secondary structure, inverted repeat, phylogeny



JMB-FOOTER RAS-JOURNALS