Sexual resting cyst production by the dinoflagellate Akashiwo sanguinea : a potential mechanism contributing to the ubiquitous distribution of a harmful alga

© 2015 Phycological Society of America.

Bibliographische Detailangaben
Veröffentlicht in:Journal of phycology. - 1966. - 51(2015), 2 vom: 17. Apr., Seite 298-309
1. Verfasser: Tang, Ying Zhong (VerfasserIn)
Weitere Verfasser: Gobler, Christopher J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Journal of phycology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Akashiwo sanguinea geographic distribution germination harmful algal bloom life cycle resting cyst
Beschreibung
Zusammenfassung:© 2015 Phycological Society of America.
The dinoflagellate Akashiwo sanguinea is a well known, cosmopolitan harmful microalga that frequently forms harmful algal blooms (HABs) in marine estuaries from temperate to tropical waters, and has posed a severe threat to fish, shellfish, and sea birds. Therefore, it is important to understand the ecology of this species, particularly the mechanisms regulating its ubiquitous geographic distribution and frequent recurrence of. To date, the mechanisms regulating distribution and recurrence of HABs by this species have been poorly understood. While resting cyst production can play a central role in the geographic expansion and initiation of HABs, studies of the life cycle of this alga, including cyst production, have been lacking. Here, we demonstrate that A. sanguinea produces sexual resting cysts homothallically. We present evidence for cell pairs in sexual mating, biflagellated planozygote formation, and cysts of different morphologies, and we describe time series for germination of cysts to germlings with two longitudinal flagella, along with studies of possible factors affecting cyst production. Phylogenetic analysis of large sub-unit rDNA sequences revealed a monophyly of this species and thus possibly a recent common ancestor for all global populations. The discovery of resting cyst production by A. sanguinea suggests its frequent recurrence of blooms and global distribution may have been facilitated by the natural and anthropogenic transport of resting cysts
Beschreibung:Date Completed 26.07.2016
Date Revised 18.03.2016
published: Print-Electronic
GENBANK: DQ156229, EF613355, KF533111, KF533112, KF533113, KF533114
Citation Status PubMed-not-MEDLINE
ISSN:1529-8817
DOI:10.1111/jpy.12274