Heterokont predator Develorapax marinus gen. et sp. nov. - a model of the ochrophyte ancestor

Aleoshin, V.V.; Mylnikov, A.P.; Mirzaeva, G.S.; Mikhailov, K.V.; Karpov, S.A.

Авторы: Aleoshin V.V., Mylnikov A.P., Mirzaeva G.S., Mikhailov K.V., Karpov S.A.
Журнал: Frontiers in microbiology
Том: 7
Номер: 1194
Год издания: 2016
Издательство: Frontiers Research Foundation
Местоположение издательства: Switzerland
DOI: 10.3389/fmicb.2016.01194
Аннотация: Heterotrophic lineages of Heterokonta (or stramenopiles), in contrast to a single monophyletic group of autotrophs, Ochrophyta, form several clades that independently branch off the heterokont stem lineage. The nearest neighbors of Ochrophyta in the phylogenetic tree appear to be almost exclusively bacterivorous, whereas the hypothesis of plastid acquisition by the ancestors of the ochrophyte lineage suggests an ability to engulf eukaryotic alga. In line with this hypothesis, the heterotrophic predator at the base of the ochrophyte lineage may be regarded as a model for the ochrophyte ancestor. Here, we present a new genus and species of marine free-living heterotrophic heterokont Develorapax marinus, which falls into an isolated heterokont cluster, along with the marine flagellate Developayella elegans, and is able to engulf eukaryotic cells. Together with environmental sequences D. marinus and D. elegans form a class-level clade Developea nom. nov. represented by species adapted to different environmental conditions and with a wide geographical distribution. The position of Developea among Heterokonta in large-scale phylogenetic tree is discussed. We propose that members of the Developea clade represent a model for transition from bacterivory to a predatory feeding mode by selection for larger prey. Presumably, such transition in the grazing strategy is possible in the presence of bacterial biofilms or aggregates expected in eutrophic environment, and has likely occurred in the ochrophyte ancestor.
Добавил в систему: Алёшин Владимир Вениаминович

	ИСТИНА	Войти в систему Регистрация
	Интеллектуальная Система Тематического Исследования НАукометрических данных
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

Интеллектуальная Система Тематического Исследования НАукометрических данных

Heterokont predator Develorapax marinus gen. et sp. nov. - a model of the ochrophyte ancestorстатья

Прикрепленные файлы