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dc.contributor.authorLacap-Bugler, Donnabella C.en_NZ
dc.contributor.authorLee, Kevin K.en_NZ
dc.contributor.authorArcher, Stephenen_NZ
dc.contributor.authorGillman, Len N.en_NZ
dc.contributor.authorLau, Maggie C.Y.en_NZ
dc.contributor.authorLeuzinger, Sebastianen_NZ
dc.contributor.authorLee, Charles Kai-Wuen_NZ
dc.contributor.authorMaki, Teruyaen_NZ
dc.contributor.authorMcKay, Christopher P.en_NZ
dc.contributor.authorPerrott, John K.en_NZ
dc.contributor.authorde los Rios-Murillo, , Asunciónen_NZ
dc.contributor.authorWarren-Rhodes, Kimberley A.en_NZ
dc.contributor.authorHopkins, David W.en_NZ
dc.contributor.authorPointing, Stephen B.en_NZ
dc.date.accessioned2017-07-10T21:46:44Z
dc.date.available2017en_NZ
dc.date.available2017-07-10T21:46:44Z
dc.date.issued2017en_NZ
dc.identifier.citationLacap-Bugler, D. C., Lee, K. K., Archer, S., Gillman, L. N., Lau, M. C. Y., Leuzinger, S., … Pointing, S. B. (2017). Global Diversity of Desert Hypolithic Cyanobacteria. Frontiers in Microbiology, 8. https://doi.org/10.3389/fmicb.2017.00867en
dc.identifier.issn1664-302Xen_NZ
dc.identifier.urihttps://hdl.handle.net/10289/11164
dc.description.abstractGlobal patterns in diversity were estimated for cyanobacteria-dominated hypolithic communities that colonize ventral surfaces of quartz stones and are common in desert environments. A total of 64 hypolithic communities were recovered from deserts on every continent plus a tropical moisture sufficient location. Community diversity was estimated using a combined t-RFLP fingerprinting and high throughput sequencing approach. The t-RFLP analysis revealed desert communities were different from the single non-desert location. A striking pattern also emerged where Antarctic desert communities were clearly distinct from all other deserts. Some overlap in community similarity occurred for hot, cold and tundra deserts. A further observation was that the producer-consumer ratio displayed a significant negative correlation with growing season, such that shorter growing seasons supported communities with greater abundance of producers, and this pattern was independent of macroclimate. High-throughput sequencing of 16S rRNA and nifH genes from four representative samples validated the t-RFLP study and revealed patterns of taxonomic and putative diazotrophic diversity for desert communities from the Taklimakan Desert, Tibetan Plateau, Canadian Arctic and Antarctic. All communities were dominated by cyanobacteria and among these 21 taxa were potentially endemic to any given desert location. Some others occurred in all but the most extreme hot and polar deserts suggesting they were relatively less well adapted to environmental stress. The t-RFLP and sequencing data revealed the two most abundant cyanobacterial taxa were Phormidium in Antarctic and Tibetan deserts and Chroococcidiopsis in hot and cold deserts. The Arctic tundra displayed a more heterogenous cyanobacterial assemblage and this was attributed to the maritime-influenced sampling location. The most abundant heterotrophic taxa were ubiquitous among samples and belonged to the Acidobacteria, Actinobacteria, Bacteroidetes, and Proteobacteria. Sequencing using nitrogenase gene-specific primers revealed all putative diazotrophs were Proteobacteria of the orders Burkholderiales, Rhizobiales, and Rhodospirillales. We envisage cyanobacterial carbon input to the system is accompanied by nitrogen fixation largely from non-cyanobacterial taxa. Overall the results indicate desert hypoliths worldwide are dominated by cyanobacteria and that growing season is a useful predictor of their abundance. Differences in cyanobacterial taxa encountered may reflect their adaptation to different moisture availability regimes in polar and non-polar deserts.
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherFrontiers Media SA.en_NZ
dc.rights© 2017 copyright with the authors.
dc.subjectScience & Technologyen_NZ
dc.subjectLife Sciences & Biomedicineen_NZ
dc.subjectMicrobiologyen_NZ
dc.subjectbiogeographyen_NZ
dc.subjectcyanobacteriaen_NZ
dc.subjectdeserten_NZ
dc.subjectdrylanden_NZ
dc.subjecthypolithen_NZ
dc.subject16S RIBOSOMAL-RNAen_NZ
dc.subjectMICROBIAL COMMUNITIESen_NZ
dc.subjectDRY VALLEYen_NZ
dc.subjectENVIRONMENTAL GRADIENTSen_NZ
dc.subjectCOLD DESERTSen_NZ
dc.subjectCHINA HOTen_NZ
dc.subjectECOLOGYen_NZ
dc.subjectPHOTOAUTOTROPHSen_NZ
dc.subjectPHOTOSYNTHESISen_NZ
dc.subjectCLASSIFICATIONen_NZ
dc.titleGlobal Diversity of Desert Hypolithic Cyanobacteriaen_NZ
dc.typeJournal Article
dc.identifier.doi10.3389/fmicb.2017.00867en_NZ
dc.relation.isPartOfFrontiers in Microbiologyen_NZ
pubs.elements-id194626
pubs.organisational-group/Waikato
pubs.organisational-group/Waikato/2018 PBRF
pubs.organisational-group/Waikato/FSEN
pubs.organisational-group/Waikato/FSEN/2018 PBRF - FSEN
pubs.organisational-group/Waikato/FSEN/School of Science
pubs.organisational-group/Waikato/FSEN/School of Science/2018 PBRF - School of Science
pubs.publication-statusPublisheden_NZ
pubs.volume8en_NZ
uow.identifier.article-noARTN 867


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