Should ecomorphs be conserved? The case of Nostoc flagelliforme, an endangered extremophile cyanobacteria

Aboal, Marina, Werner, Olaf, Eugenia Garcia-Fernandez, Maria, Antonio Palazon, Jose, Carlos Cristobal, Jose and Williams, Wendy (2016) Should ecomorphs be conserved? The case of Nostoc flagelliforme, an endangered extremophile cyanobacteria. Journal for Nature Conservation, 30 52-64. doi:10.1016/j.jnc.2016.01.001


Author Aboal, Marina
Werner, Olaf
Eugenia Garcia-Fernandez, Maria
Antonio Palazon, Jose
Carlos Cristobal, Jose
Williams, Wendy
Title Should ecomorphs be conserved? The case of Nostoc flagelliforme, an endangered extremophile cyanobacteria
Formatted title
Should ecomorphs be conserved? The case of Nostoc flagelliforme, an endangered extremophile cyanobacteria
Journal name Journal for Nature Conservation   Check publisher's open access policy
ISSN 1617-1381
1618-1093
Publication date 2016-05-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.jnc.2016.01.001
Open Access Status Not Open Access
Volume 30
Start page 52
End page 64
Total pages 13
Place of publication Muenchen, Germany
Publisher Elsevier
Language eng
Formatted abstract
Nostoc flagelliforme has been reported from deserts of all continents and more recently from semiarid environments in south-east Spain and Australia. Its cylindrical thalli are very conspicuous on soils after rains and can be easily differentiated from other taxa and it is considered endangered in some countries, e. g. China. It was firstly described as variety flagelliforme of Nostoc commune but later was considered a separate species. The morphology, fine structure and ecology of populations of both taxa from Australia and different regions of Spain were studied and 16S rRNA and trnLLeu (UAA) genes were sequenced to identify their intraspecific genetic variation. The morphological study revealed the presence of several intermediate morphs, from spheres and sheets to ribbons followed by the cylindrical thalli and the overlapping of cell dimensions, permitting the differentiation of cylindrical morphs from the others. The molecular data did not allow for a distinction between N. commune and N. flagelliforme which is clearly polyphyletic and both show a high genetic diversity. The presence of cylindrical thalli seems to be related to extreme conditions of aridity, usually on soils but occasionally on rock walls. The ecotype that N. flagelliforme represents deserves to be protected for itself and for the evolutionary process it represents opening up the possibility of implementation of recovery measures and even opportunities to explore its biotechnological production from a different point of view.
Keyword Conservation
Cyanobacteria
Ecology
Morphology
Semi-arid regions
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Agriculture and Food Sciences
 
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