Small-scale genetic structure of Gracilaria salicornia and its red algal parasite, G. babae (Gracilariaceae, Rhodophyta), in Malaysia

Ng, Poh-Kheng; Lim, Phaik-Eem; Phang, Siew‐Moi

doi:10.1515/bot-2014-0071

Cited by 10 publications

(6 citation statements)

References 37 publications

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“…Both size and pigmentation are not definitive because small epiphytes do exist, and reproductive structures in some red algae can have lighter pigmentation. The criteria that we feel are the most useful are the cell-cell secondary pit connections between the parasites and the host cells, and finding all life-history stages of parasites on the same host plant, Gracilaria salicornia Ng et al 2013, Ng et al 2014, Ng et al 2015Hydropuntia sp. Ng et al 2014…”

Section: Discussionmentioning

confidence: 99%

Red algal parasites: a synopsis of described species, their hosts, distinguishing characters and areas for continued research

2017

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Red algal parasites are diverse organisms that are unusual due to the fact that many are closely related to their hosts. Parasitism has developed many times within different red algal groups, but the full extent of parasite biodiversity is unknown, as parasites are easily overlooked due to their small size and often low abundance. Additionally, the literature on red algal parasites is dispersed and has not been compiled in over 30 years. Although criteria have been proposed to define what constitutes a red algal parasite, many parasites are poorly described, and the cellular interactions with their host are poorly known. A few studies have demonstrated that parasites transfer organelles to host cells, which can alter the physiology of the host to the benefit of the parasite. Here, we apply a set of defining criteria for parasites to a compiled list of all described red algal parasites. Our results highlight the lack of knowledge of many key parasitic processes including early parasite development, host cell “control”, and parasite origin. Until the biology of more parasites is studied, generalisations on the processes of parasitism in red algae may be premature. We hope this synopsis will stimulate research into this fascinating group.

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Section: Discussionmentioning

confidence: 99%

Red algal parasites: a synopsis of described species, their hosts, distinguishing characters and areas for continued research

2017

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“…Gracilaria salicornia Ng et al 2013, Ng et al 2014, Ng et al 2015Hydropuntia sp. Ng et al 2014 Gracilariopsis lemaneiformis Zuccarello 1994, Goff et al 1996, Hancock et which reduces the chance of mistaking host outgrowths as parasites.…”

Section: Gracilaria Babae Amentioning

confidence: 99%

Red algal parasites: A synopsis of described species, their hosts, distinguishing characters and areas for continued research

Preuss¹,

Nelson²,

Zuccarello³

2020

Preprint

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© 2017 Walter de Gruyter GmbH, Berlin/Boston. Red algal parasites are diverse organisms that are unusual due to the fact that many are closely related to their hosts. Parasitism has developed many times within different red algal groups, but the full extent of parasite biodiversity is unknown, as parasites are easily overlooked due to their small size and often low abundance. Additionally, the literature on red algal parasites is dispersed and has not been compiled in over 30 years. Although criteria have been proposed to define what constitutes a red algal parasite, many parasites are poorly described, and the cellular interactions with their host are poorly known. A few studies have demonstrated that parasites transfer organelles to host cells, which can alter the physiology of the host to the benefit of the parasite. Here, we apply a set of defining criteria for parasites to a compiled list of all described red algal parasites. Our results highlight the lack of knowledge of many key parasitic processes including early parasite development, host cell "control", and parasite origin. Until the biology of more parasites is studied, generalisations on the processes of parasitism in red algae may be premature. We hope this synopsis will stimulate research into this fascinating group.

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“…GRACILARIOIDEAE: REMARKS: On the basis of phylogenetic results only, Congracilaria and Gracilariophila should be subsumed into one of three of the genera in the subfam. Gracilarioideae (Ng et al 2014(Ng et al , 2015(Ng et al , 2016. The generitype Congracilaria babae H. Yamamoto (1986: 287) -van Bosse (1928) to be congeneric with Gracilaria.…”

Section: Gracilariales Fredericq Etmentioning

confidence: 99%

Systematics of the Gracilariales (Rhodophyta) including new subfamilies, tribes, subgenera, and two new genera, Agarophyton gen. nov. and Crassa gen. nov.

et al. 2018

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The Gracilariales is a red macroalgal order and the main global source of the economically important agar, a marine phycocolloid. Independent comparative morphological and molecular phylogenetic studies over the last 20 years have revealed the existence of seven major clades recognizable as distinct genera. Of these major clades only four free-living genera have been widely accepted taxonomically: Curdiea, Melanthalia, Gracilariopsis, and Gracilaria. Three other clades comprise the reinstatement of the genus Hydropuntia and the proposal of two new genera, Agarophyton and Crassa, described herein. Based on new rbcL DNA sequences, and along with a reassessment of published comparative morphological and molecular phylogenetic studies, we argue that the latter three genera represent distinct evolutionary lineages in the Gracilariaceae, and propose a new classification for the order Gracilariales. Our new proposal incorporates the most current understanding of the evolutionary history of the order, establishes a natural and stable classification system, and provides the basis for the recognization of intra-family ranks. Our classification scheme reconciles all molecular phylogenetic studies published to date.

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Small-scale genetic structure of Gracilaria salicornia and its red algal parasite, G. babae (Gracilariaceae, Rhodophyta), in Malaysia

Cited by 10 publications

References 37 publications

Red algal parasites: a synopsis of described species, their hosts, distinguishing characters and areas for continued research

Red algal parasites: a synopsis of described species, their hosts, distinguishing characters and areas for continued research

Red algal parasites: A synopsis of described species, their hosts, distinguishing characters and areas for continued research

Systematics of the Gracilariales (Rhodophyta) including new subfamilies, tribes, subgenera, and two new genera, Agarophyton gen. nov. and Crassa gen. nov.

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