Asymmetric Fitness of Second-Generation Interspecific Hybrids Between Ciona robusta and Ciona intestinalis.

G3 : Genes - Genomes - Genetics
Naoyuki OhtaLionel Christiaen

Abstract

Reproductive isolation is central to speciation, but interspecific crosses between two closely related species can produce viable and fertile hybrids. Two different species of tunicates in the same ascidian genus, Ciona robusta and Ciona intestinalis, can produce hybrids. However, wild sympatric populations display limited gene flow, suggesting the existence of obstacles to interspecific reproduction that remain unknown. Here, we took advantage of a closed culture system to cross C. robusta with C. intestinalis and established F1 and F2 hybrids. We monitored post-embryonic development, survival, and sexual maturation to characterize the genetic basis of simple traits, and further probe the physiological mechanisms underlying reproductive isolation. Partial viability of first and second generation hybrids suggested that both pre- and postzygotic mechanisms contributed to genomic incompatibilities in hybrids. We observed asymmetric fitness, whereby the C. intestinalis maternal lines fared more poorly in our system, pointing to maternal origins of species-specific sensitivity. We discuss the possibility that asymmetrical second generation inviability and infertility emerge from interspecific incompatibilities between the nuclear a...Continue Reading

References

Nov 21, 2000·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·H A Orr, D C Presgraves
Oct 6, 2005·Journal of Molecular Evolution·Miho M SuzukiAdrian Bird
Mar 21, 2006·Zoological Science·Shungo KanoPaolo Sordino
Mar 31, 2007·Developmental Dynamics : an Official Publication of the American Association of Anatomists·Jean-Stéphane JolyYasunori Sasakura
Apr 17, 2007·Genetics·Michael Turelli, Leonie C Moyle
May 23, 2007·Proceedings of the National Academy of Sciences of the United States of America·Luigi CaputiPaolo Sordino
Nov 21, 2007·Systematic Biology·Kevin De Queiroz
Mar 22, 2008·Science·Yoshito HaradaHitoshi Sawada
May 23, 2009·Journal of Plankton Research·Jean-Marie BouquetEric M Thompson
Jan 7, 2010·Nature Reviews. Genetics·Daven C Presgraves
Feb 13, 2010·Cold Spring Harbor Protocols·Lionel ChristiaenMichael Levine
Apr 21, 2010·Molecular Phylogenetics and Evolution·Marie L Nydam, Richard G Harrison
Nov 4, 2010·Evolution; International Journal of Organic Evolution·Marie L Nydam, Richard G Harrison
Dec 14, 2011·Trends in Ecology & Evolution·Asher D Cutter
Sep 22, 2012·Molecular Ecology·Ronald S Burton, Felipe S Barreto
Feb 19, 2014·Nature Reviews. Genetics·Ole SeehausenAlex Widmer
Jul 22, 2014·Genesis : the Journal of Genetics and Development·Josep Martí-SolansCristian Cañestro
Dec 21, 2016·Molecular Ecology·Daniel B SloanJoel Sharbrough
Nov 5, 2019·Developmental Biology·Yukako TajimaYasunori Sasakura
Feb 15, 2020·Scientific Reports·Hitoshi SawadaMaki Shirae-Kurabayashi

❮ Previous
Next ❯

Citations

Apr 7, 2021·Genome Biology and Evolution·Yutaka SatouNoriyuki Satoh

❮ Previous
Next ❯

Methods Mentioned

BETA
PCR
electrophoresis
genotyping

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.