J 2014

The X Chromosome Is Necessary for Somatic Development in the Dioecious Silene latifolia: Cytogenetic and Molecular Evidence and Sequencing of a Haploid Genome

SOUKUPOVÁ, Magda, Eva NEVRTALOVÁ, Jana ČÍŽKOVÁ, Ivan VOGEL, Radim CEGAN et. al.

Basic information

Original name

The X Chromosome Is Necessary for Somatic Development in the Dioecious Silene latifolia: Cytogenetic and Molecular Evidence and Sequencing of a Haploid Genome

Authors

SOUKUPOVÁ, Magda (203 Czech Republic), Eva NEVRTALOVÁ (203 Czech Republic), Jana ČÍŽKOVÁ (203 Czech Republic), Ivan VOGEL (703 Slovakia, guarantor, belonging to the institution), Radim CEGAN (203 Czech Republic), Roman HOBZA (203 Czech Republic) and Boris VYSKOT (203 Czech Republic)

Edition

Cytogenetic and Genome research, Basel, Karger, 2014, 1424-8581

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

Genetics and molecular biology

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 1.561

RIV identification code

RIV/00216224:14740/14:00074437

Organization unit

Central European Institute of Technology

UT WoS

000342614100010

Keywords in English

Anther culture; Cytometry; Dihaploids; Genome sequencing; Haploid female plants; Sex chromosomes; Silene latifolia

Tags

International impact, Reviewed
Změněno: 4/3/2015 16:28, Martina Prášilová

Abstract

V originále

Silene latifolia (or white campion) possesses a well-established sex determination system with a dominant Y chromosome in males (the mammalian type). The heteromorphic sex chromosomes X and Y in S. latifolia largely stopped recombination; thus, we can expect a gradual genetic degeneration of the Y chromosome. It is well proven that neither diploid nor polyploid S. latifolia sporophytes can survive without at least one X, so the only life stage possessing the Y as the sole sex chromosome is the male gametophyte (pollen tube), while the female gametophyte seems to be X-dependent. Previous studies on anther-derived plants of this species showed that the obtained plants (largely haploid or dihaploid) were phenotypically and cytologically female. In this paper, we provide molecular evidence for the inviability of plants lacking the X chromosome. Using sex-specific PCR primers, we show that all plantlets and plants derived from anther cultures are female. In studying anther-derived diploid females by sequencing of X-linked markers, we demonstrate that these plants are really homozygous dihaploids. A haploid regenerant plant was sequenced (8x genome coverage) using Illumina technology. Genome data are disposable in the EMBL database as a standard for full genome and X chromosome assembly in this model species. Homozygous dihaploids were back-crossed with males to yield a progeny useful for the study of the evolution of the Y chromosome. (C) 2014 S. Karger AG, Basel

Links

GBP501/12/G090, research and development project
Name: Evoluce a funkce komplexních genomů rostlin