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Phaeoviruses discovered in kelp (Laminariales)

Phaeoviruses discovered in kelp (Laminariales)
Phaeoviruses discovered in kelp (Laminariales)
Phaeoviruses are latent double-stranded DNA viruses that insert their genomes into those of their brown algal (Phaeophyceae) hosts. So far these viruses are known only from members of the Ectocarpales, which are small and short-lived macroalgae. Here we report molecular and morphological evidence for a new Phaeovirus cluster, referred to as sub-group C, infecting kelps (Laminariales) of the genera Laminaria and Saccharina, which are ecologically and commercially important seaweeds. Epifluorescence and TEM observations indicate that the Laminaria digitata Virus (LdigV), the type species of sub-group C, targets the host nucleus for its genome replication, followed by gradual degradation of the chloroplast and assembly of virions in the cytoplasm of both vegetative and reproductive cells. This study is the first to describe phaeoviruses in kelp. In the field, these viruses infected two thirds of their host populations; however, their biological impact remains unknown.
1751-7362
2869-2873
Mckeown, Dean A
c4c534f3-c498-4b1f-a75a-59f3e902355c
Stevens, Kim
a23d5f7b-8fe0-4271-bdd0-6529b9bec970
Peters, Akira F
0991f2c5-e17f-421b-a63d-a36194bd31e8
Bond, Peter
dc1d2b3f-e992-4098-a991-2b76381b4c54
Harper, Glenn M
2eb36778-1781-4ddc-a0ed-cf5e032fadba
Brownlee, Colin
2af37c1c-b2bf-4832-8370-d9c35e7b3385
Brown, Murray T
afa88fc7-e18f-462f-83d3-17e1b86269d4
Schroeder, Declan C
3a84ae31-1772-4707-8246-c69abdcd3005
Mckeown, Dean A
c4c534f3-c498-4b1f-a75a-59f3e902355c
Stevens, Kim
a23d5f7b-8fe0-4271-bdd0-6529b9bec970
Peters, Akira F
0991f2c5-e17f-421b-a63d-a36194bd31e8
Bond, Peter
dc1d2b3f-e992-4098-a991-2b76381b4c54
Harper, Glenn M
2eb36778-1781-4ddc-a0ed-cf5e032fadba
Brownlee, Colin
2af37c1c-b2bf-4832-8370-d9c35e7b3385
Brown, Murray T
afa88fc7-e18f-462f-83d3-17e1b86269d4
Schroeder, Declan C
3a84ae31-1772-4707-8246-c69abdcd3005

Mckeown, Dean A, Stevens, Kim, Peters, Akira F, Bond, Peter, Harper, Glenn M, Brownlee, Colin, Brown, Murray T and Schroeder, Declan C (2017) Phaeoviruses discovered in kelp (Laminariales). The ISME Journal, 11 (12), 2869-2873. (doi:10.1038/ismej.2017.130).

Record type: Article

Abstract

Phaeoviruses are latent double-stranded DNA viruses that insert their genomes into those of their brown algal (Phaeophyceae) hosts. So far these viruses are known only from members of the Ectocarpales, which are small and short-lived macroalgae. Here we report molecular and morphological evidence for a new Phaeovirus cluster, referred to as sub-group C, infecting kelps (Laminariales) of the genera Laminaria and Saccharina, which are ecologically and commercially important seaweeds. Epifluorescence and TEM observations indicate that the Laminaria digitata Virus (LdigV), the type species of sub-group C, targets the host nucleus for its genome replication, followed by gradual degradation of the chloroplast and assembly of virions in the cytoplasm of both vegetative and reproductive cells. This study is the first to describe phaeoviruses in kelp. In the field, these viruses infected two thirds of their host populations; however, their biological impact remains unknown.

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More information

Accepted/In Press date: 12 May 2017
e-pub ahead of print date: 25 July 2017
Published date: 1 December 2017

Identifiers

Local EPrints ID: 418391
URI: http://eprints.soton.ac.uk/id/eprint/418391
ISSN: 1751-7362
PURE UUID: 2111979e-5850-4c78-80d0-0e7e75dece46

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Date deposited: 06 Mar 2018 17:30
Last modified: 08 Jan 2022 07:26

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Contributors

Author: Dean A Mckeown
Author: Kim Stevens
Author: Akira F Peters
Author: Peter Bond
Author: Glenn M Harper
Author: Colin Brownlee
Author: Murray T Brown
Author: Declan C Schroeder

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