Widely distributed red alga from New Zealand receives a scientific name at last

March 28, 2013
This image shows Pyropia plicata on intertidal rocks. Credit: Dr. Wendy Nelson

The most commonly occurring red alga in the algal order Bangiales in New Zealand has at last received a formal scientific name. Pyropia plicata, is an intertidal red alga, found in abundance in the North, South and Chatham Islands. It has been confused for many years with a species first collected from the New Zealand subantarctic islands in 1840. Recent research had clarified the identity and distribution of the southern species, Porphyra columbina, and also transferred it to the genus Pyropia. The description of Py. plicata was published in the open access journal PhytoKeys.

The newly described Py. plicata has a distinctive growth form with pleated blades. It has beautiful purple to grey , bleaching to khaki-green on upper edges. It is found attached to high intertidal rocks by a central rhizoidal holdfast, which are hair-like extensions of the blade cells. Although the blades are only one cell layer thick they are remarkably resistant to the rigours of life on the intertidal shore and can withstand drying in the sun, and rehydrating when the tide returns.

This is an image of Pyropia plicata, herbarium (scale bar = 5 cm). Credit: Dr. Wendy Nelson

This is one of the species that is known in New Zealand as karengo, and is highly prized by as a taonga or treasure. Pyropia species are also eaten worldwide and known to be high in protein and trace elements. In Japan species of Pyropia are known as nori and are familiar to many people worldwide as the seaweed sheet that is wrapped around sushi.

This is an image of bleached Pyropia plicata on intertidal rocks in summer. Credit: Dr. Wendy Nelson

"When we began work on the Bangiales of New Zealand over 20 years ago, we thought there were only a few species in this order in the southern Pacific." comments Dr. Wendy Nelson from the National Institute of Water and Atmospheric Research, New Zealand. "We have come to realise the diversity in this region is very high, and there are still many species that are undescribed. Documenting and clarifying their relationships are important steps in understanding diversity and protecting our environment."

Explore further: Early land plants: Early adopters

More information: Nelson, W.A. (2013) Pyropia plicata sp. nov. (Bangiales, Rhodophyta): naming a common intertidal alga from New Zealand. PhytoKeys 21: 17-28., doi: 10.3897/phytokeys.21.4614

Sutherland, J.; Lindstrom, S.; Nelson, W.; Brodie, J.; Lynch, M.; Hwang, M.S.; Choi, H.G.; Miyata, M.; Kikuchi, N.; Oliveira, M. Farr, T.; Neefus, C; Mols-Mortensen, A.; Milstein, D.; Müller, K. (2011).. A new look at an ancient order: generic revision of the Bangiales. Journal of Phycology 47:1131-1151.

Related Stories

Early land plants: Early adopters

January 4, 2012

The open-access journal PhytoKeys – known for applying cutting edge technologies in publishing and dissemination to accelerate biodiversity research – is pioneering an electronic-only publishing workflow in a series ...

Recommended for you

Studies reveal details of error correction in cell division

July 29, 2015

Cell biologists led by Thomas Maresca at the University of Massachusetts Amherst, with collaborators elsewhere, report an advance in understanding the workings of an error correction mechanism that helps cells detect and ...

Researchers discover new type of mycovirus

July 29, 2015

Researchers, led by Dr Robert Coutts, Leverhulme Research Fellow from the School of Life and Medical Sciences at the University of Hertfordshire, and Dr Ioly Kotta-Loizou, Research Associate at Imperial College, have discovered ...

Stressed out plants send animal-like signals

July 29, 2015

University of Adelaide research has shown for the first time that, despite not having a nervous system, plants use signals normally associated with animals when they encounter stress.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.