Maullinia braseltonii sp. nov. (Rhizaria, Phytomyxea, Phagomyxida): A Cyst-forming Parasite of the Bull Kelp Durvillaea spp. (Stramenopila, Phaeophyceae, Fucales)

Pedro Murua, Franz Goecke , Renato Westermeier, Pieter Van West, Frithjof C Kuepper, Sigrid Neuhauser (Corresponding Author)

Research output: Contribution to journalArticle

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Abstract

Phytomyxea are obligate endoparasites of angiosperm plants and
Stramenopiles characterised by a complex life cycle. Here Maullinia
braseltonii sp. nov., an obligate parasite infecting the bull kelp
Durvillaea (Phaeophyceae, Fucales) from the South-Eastern Pacific
(Central Chile and Chiloe Island) and South-Western Atlantic (Falkland
Islands, UK) is described. M. braseltonii causes distinct hypertrophies
(galls) on the host thalli making it easily identifiable in the field.
Sequence comparisons based on the partial 18S and the partial 18S-5.8S-
28S regions confirmed its placement within the order Phagomyxida
(Phytomyxea, Rhizaria), as a sister species of the marine parasite
Maullinia ectocarpii, which is also a parasite of brown algae. The
development of resting spores in M. braseltonii is described by light and
electron microscopy and confirmed by FISH experiments, which visually
showed the differential expression of the 28S non-coding gene, strongly
in early plasmodia and weakly in late cysts. M. braseltonii is, so far,
the only phytomyxean parasite of brown algae for which the formation of
resting spores has been reported, and which is widely distributed in
Durvillaea stocks from the Southeastern Pacific and Southwestern
Atlantic.
Original languageEnglish
Pages (from-to)468-480
Number of pages13
JournalProtist
Volume168
Issue number4
Early online date13 Jul 2017
DOIs
Publication statusPublished - Aug 2017

Fingerprint

Rhizaria
Kelp
Phaeophyta
Cysts
Parasites
Spores
Angiosperms
Plasmodium
Chile
Life Cycle Stages
Islands
Hypertrophy
Microscopy
Light
Genes

Keywords

  • plasmodiophorids
  • brown algae
  • galls
  • rDNA
  • resting spores

Cite this

Maullinia braseltonii sp. nov. (Rhizaria, Phytomyxea, Phagomyxida) : A Cyst-forming Parasite of the Bull Kelp Durvillaea spp. (Stramenopila, Phaeophyceae, Fucales). / Murua, Pedro; Goecke , Franz; Westermeier, Renato; Van West, Pieter; Kuepper, Frithjof C; Neuhauser , Sigrid (Corresponding Author).

In: Protist, Vol. 168, No. 4, 08.2017, p. 468-480.

Research output: Contribution to journalArticle

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title = "Maullinia braseltonii sp. nov. (Rhizaria, Phytomyxea, Phagomyxida): A Cyst-forming Parasite of the Bull Kelp Durvillaea spp. (Stramenopila, Phaeophyceae, Fucales)",
abstract = "Phytomyxea are obligate endoparasites of angiosperm plants andStramenopiles characterised by a complex life cycle. Here Maulliniabraseltonii sp. nov., an obligate parasite infecting the bull kelpDurvillaea (Phaeophyceae, Fucales) from the South-Eastern Pacific(Central Chile and Chiloe Island) and South-Western Atlantic (FalklandIslands, UK) is described. M. braseltonii causes distinct hypertrophies(galls) on the host thalli making it easily identifiable in the field.Sequence comparisons based on the partial 18S and the partial 18S-5.8S-28S regions confirmed its placement within the order Phagomyxida(Phytomyxea, Rhizaria), as a sister species of the marine parasiteMaullinia ectocarpii, which is also a parasite of brown algae. Thedevelopment of resting spores in M. braseltonii is described by light andelectron microscopy and confirmed by FISH experiments, which visuallyshowed the differential expression of the 28S non-coding gene, stronglyin early plasmodia and weakly in late cysts. M. braseltonii is, so far,the only phytomyxean parasite of brown algae for which the formation ofresting spores has been reported, and which is widely distributed inDurvillaea stocks from the Southeastern Pacific and SouthwesternAtlantic.",
keywords = "plasmodiophorids, brown algae, galls, rDNA, resting spores",
author = "Pedro Murua and Franz Goecke and Renato Westermeier and {Van West}, Pieter and Kuepper, {Frithjof C} and Sigrid Neuhauser",
note = "Help in biomass collection by David J. Pati{\~n}o (UACh), Liliana A. Mu{\~n}oz (University of Aberdeen (UoA)) and Alexandra Mystikou (South Atlantic Environmental Research Institute & UoA), and in conducting electron microscopy by Gillian Milne (Aberdeen Microscopy Facility) is acknowledged. Thanks are due to the three anonymous reviewers, whose comments helped to improve the earlier version of this manuscript. PM was funded by Conicyt (BecasChile N° 72130422) for PhD studies at the University of Aberdeen, and by the NERC IOF Pump-priming (scheme NE/L013223/1) for activities at the Scottish Association for Marine Sciences. RW thanks financial support from Gobierno Regional de Los Lagos (projects FIC 2012 E7259-2 and FIC 2013 BIP30234872-0) and Fondef, Conicyt (HUAM AQ12I0010), which allows the sampling expeditions at Chiloe Island by David J. Pati{\~n}o, Liliana Mu{\~n}oz and PM. SN was funded by the Austrian Science Fund (FWF): grant J3175-B20 (Erwin Schr{\"o}dinger Fellowship) and grant Y801-B16 (START-grant). PvW is supported by the UoA, BBSRC and NERC. Also, the MASTS pooling initiative (Marine Alliance for Science and Technology for Scotland, funded by the Scottish Funding Council and contributing institutions; grant reference HR09011) is gratefully acknowledged for its support to FCK. Finally, we would like to thank the UoA, Shackleton Fund (FCK) and the John Cheek Fund (FCK) for supporting the expeditions of Alexandra Mystikou, PvW and FCK to the Falkland Islands.",
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T1 - Maullinia braseltonii sp. nov. (Rhizaria, Phytomyxea, Phagomyxida)

T2 - A Cyst-forming Parasite of the Bull Kelp Durvillaea spp. (Stramenopila, Phaeophyceae, Fucales)

AU - Murua, Pedro

AU - Goecke , Franz

AU - Westermeier, Renato

AU - Van West, Pieter

AU - Kuepper, Frithjof C

AU - Neuhauser , Sigrid

N1 - Help in biomass collection by David J. Patiño (UACh), Liliana A. Muñoz (University of Aberdeen (UoA)) and Alexandra Mystikou (South Atlantic Environmental Research Institute & UoA), and in conducting electron microscopy by Gillian Milne (Aberdeen Microscopy Facility) is acknowledged. Thanks are due to the three anonymous reviewers, whose comments helped to improve the earlier version of this manuscript. PM was funded by Conicyt (BecasChile N° 72130422) for PhD studies at the University of Aberdeen, and by the NERC IOF Pump-priming (scheme NE/L013223/1) for activities at the Scottish Association for Marine Sciences. RW thanks financial support from Gobierno Regional de Los Lagos (projects FIC 2012 E7259-2 and FIC 2013 BIP30234872-0) and Fondef, Conicyt (HUAM AQ12I0010), which allows the sampling expeditions at Chiloe Island by David J. Patiño, Liliana Muñoz and PM. SN was funded by the Austrian Science Fund (FWF): grant J3175-B20 (Erwin Schrödinger Fellowship) and grant Y801-B16 (START-grant). PvW is supported by the UoA, BBSRC and NERC. Also, the MASTS pooling initiative (Marine Alliance for Science and Technology for Scotland, funded by the Scottish Funding Council and contributing institutions; grant reference HR09011) is gratefully acknowledged for its support to FCK. Finally, we would like to thank the UoA, Shackleton Fund (FCK) and the John Cheek Fund (FCK) for supporting the expeditions of Alexandra Mystikou, PvW and FCK to the Falkland Islands.

PY - 2017/8

Y1 - 2017/8

N2 - Phytomyxea are obligate endoparasites of angiosperm plants andStramenopiles characterised by a complex life cycle. Here Maulliniabraseltonii sp. nov., an obligate parasite infecting the bull kelpDurvillaea (Phaeophyceae, Fucales) from the South-Eastern Pacific(Central Chile and Chiloe Island) and South-Western Atlantic (FalklandIslands, UK) is described. M. braseltonii causes distinct hypertrophies(galls) on the host thalli making it easily identifiable in the field.Sequence comparisons based on the partial 18S and the partial 18S-5.8S-28S regions confirmed its placement within the order Phagomyxida(Phytomyxea, Rhizaria), as a sister species of the marine parasiteMaullinia ectocarpii, which is also a parasite of brown algae. Thedevelopment of resting spores in M. braseltonii is described by light andelectron microscopy and confirmed by FISH experiments, which visuallyshowed the differential expression of the 28S non-coding gene, stronglyin early plasmodia and weakly in late cysts. M. braseltonii is, so far,the only phytomyxean parasite of brown algae for which the formation ofresting spores has been reported, and which is widely distributed inDurvillaea stocks from the Southeastern Pacific and SouthwesternAtlantic.

AB - Phytomyxea are obligate endoparasites of angiosperm plants andStramenopiles characterised by a complex life cycle. Here Maulliniabraseltonii sp. nov., an obligate parasite infecting the bull kelpDurvillaea (Phaeophyceae, Fucales) from the South-Eastern Pacific(Central Chile and Chiloe Island) and South-Western Atlantic (FalklandIslands, UK) is described. M. braseltonii causes distinct hypertrophies(galls) on the host thalli making it easily identifiable in the field.Sequence comparisons based on the partial 18S and the partial 18S-5.8S-28S regions confirmed its placement within the order Phagomyxida(Phytomyxea, Rhizaria), as a sister species of the marine parasiteMaullinia ectocarpii, which is also a parasite of brown algae. Thedevelopment of resting spores in M. braseltonii is described by light andelectron microscopy and confirmed by FISH experiments, which visuallyshowed the differential expression of the 28S non-coding gene, stronglyin early plasmodia and weakly in late cysts. M. braseltonii is, so far,the only phytomyxean parasite of brown algae for which the formation ofresting spores has been reported, and which is widely distributed inDurvillaea stocks from the Southeastern Pacific and SouthwesternAtlantic.

KW - plasmodiophorids

KW - brown algae

KW - galls

KW - rDNA

KW - resting spores

U2 - 10.1016/j.protis.2017.07.001

DO - 10.1016/j.protis.2017.07.001

M3 - Article

C2 - 28822911

VL - 168

SP - 468

EP - 480

JO - Protist

JF - Protist

SN - 1434-4610

IS - 4

ER -