2017
Icelandic accession of Arabidopsis thaliana confirmed with cytogenetic markers and its origin inferred from whole-genome sequencing
MANDÁKOVÁ, Terezie; Hjortur THORBJORNSSON; Rahul PISUPATI; Ilka REICHARDT; Martin LYSÁK et al.Základní údaje
Originální název
Icelandic accession of Arabidopsis thaliana confirmed with cytogenetic markers and its origin inferred from whole-genome sequencing
Autoři
MANDÁKOVÁ, Terezie; Hjortur THORBJORNSSON; Rahul PISUPATI; Ilka REICHARDT; Martin LYSÁK a Kesara ANAMTHAWAT-JONSSON
Vydání
ICELANDIC AGRICULTURAL SCIENCES, REYKJAVIK, RANNSOKNASTOFNUN LANDBUNADARINS, 2017, 1670-567X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10611 Plant sciences, botany
Stát vydavatele
Island
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 0.364
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14740/17:00098205
Organizační jednotka
Středoevropský technologický institut
UT WoS
EID Scopus
Klíčová slova anglicky
Brassicaceae; chromosome painting; comparative cytogenomics; geothermal soil; meiosis; ribosomal FISH; paracentric inversion; SNPmatch
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 1. 3. 2018 14:29, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
In this paper, we report the first discovery of Arabidopsis thaliana in Iceland. In May 2015, the plants were located growing on warm geothermal soil around the hot spring Deildartunguhver in Reykholt, West Iceland. Flower buds and leaves were collected and used for subsequent cytogenetic analyses and DNA sequencing. Whole plant specimens were deposited at the Icelandic AMNH herbarium and were assigned accession number VA21379. The accession was found to be diploid with 2n=2x=10, as expected for this species. At meiosis I (diakinesis) it formed five normal bivalents. Ribosomal FISH mapping revealed two pairs of 5S rDNA loci and two pairs of NORs. Fine-scale chromosome painting using BAC clones specific for chromosomes At1 and At4 confirmed the standard structure of these chromosomes. Furthermore, the painting revealed an absence of the 1.17-Mb paracentric inversion on the At4 short arm in the Icelandic accession, in contrast to the inversion-bearing A. thaliana accessions more prevalent in North America. The sequencing of multiplexed whole-genome libraries identified the Swedish accession Ham-1 as the closest relative of the Icelandic accession, with, however, a markedly low SNPmatch score. We conclude that although the Icelandic accession appears to be more genetically related to populations from Scandinavia than to other European accessions, it did not originate from any of the populations represented in the global collection of the 1001 Genomes accessions of A. thaliana.