Show simple item record

dc.contributor.advisorOrlovich, David
dc.contributor.advisorBell, Ann
dc.contributor.authorAtkinson, Toni Juneen_NZ
dc.date.available2009-11-15T19:48:27Z
dc.date.copyright2007
dc.identifierhttp://adt.otago.ac.nz/public/adt-NZDU20080207.093747en_NZ
dc.identifier.citationAtkinson, T. J. (2007). Unexpected microfungal diversity : woody decay Lasiosphaeriaceae, Chaetosphaeriaceae and Helminthosphaeriaceae of New Zealand (Thesis, Doctor of Philosophy). University of Otago. Retrieved from http://hdl.handle.net/10523/166en
dc.identifier.urihttp://hdl.handle.net/10523/166
dc.description.abstractNew Zealand's lignicolous pyrenomycete flora has been little studied. The cosmopolitan Lasiosphaeriaceae, largest and least studied family in the Sordariales, has long been noted for its morphological diversity and the artificiality of its grouping. This first systematic study of lignicolous Lasiosphaeriaceae in New Zealand uses morphology and phylogenetics to elucidate relationships within the New Zealand mycota and facilitate comparisons with relatives worldwide. Collection areas spanned New Zealand's 13 degrees of latitude and included a range of native forest types. The novel application of recently-available molecular biology techniques allowed sequencing from single pyrenomycete fruitbodies. Two new genera and 15 new species or species complexes are proposed in total. A new genus is proposed within the Lasiosphaeriaceae to accommodate an interesting new collection. Seven new species are described in the known genera Lasiosphacria and Lasiosphaeris and the polyphyly of certain Lasiosphacria taxa is discussed. Five new taxa are described within the Chaetosphaeriaceae, including a pair with surprisingly unique morphology. All are currently placed within Chaetosphaeria, but comprise part of a recently recognised long-spored clade that is sister to that which includes the type genus. Within the Helminthosphaeriaceae one new genus is proposed to accommodate an unusual new collection; and a new species described within Hilberina, but its transference to a new genus predicted as knowledge of this recent family grows. Phylogenetic results support the separation of the Chaetosphaeriaceae and Helminthosphaeriaceae from the Lasiosphaeriaceae where many of these taxa were previously. The traditional morphological character of ascospore shape is shown to have little use in the delimitation of genera. More recently emphasised characters such as peridial wall structure may have more value, however the fruitbody wall of some New Zealand taxa could not be more different from their phylogenetic relatives. New Zealand taxa are noted for their frequently unprecedented morphology and/or unique genetics in comparison with other known taxa, which are predominantly from the northern hemisphere. The high levels of morphological and genetic divergence among New Zealand taxa appear to reflect extensive microfungal endemism on these relatively isolated islands; but surveys of diversity in other parts of Gondwana are desperately needed. A Key to New Zealand taxa within the Lasiosphaeriaceae, Helminthosphaeriaceae and long-spored Chaetosphaeriaceae is provided.en_NZ
dc.languageenen_NZ
dc.publisherUniversity of Otagoen_NZ
dc.rightshttp://www.otago.ac.nz/administration/policies/otago003228.htmlen_NZ
dc.rightsAll items in OUR Archive are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
dc.rights.urihttp://www.otago.ac.nz/administration/policies/otago003228.html
dc.subjectNew Zealanden_NZ
dc.subjectwood-decayingen_NZ
dc.subjectfungien_NZ
dc.subjectmicrofungien_NZ
dc.subjectlasiosphaeriaceaeen_NZ
dc.subjecthelminthosphaeriaceaeen_NZ
dc.subjectchaetosphaeriaceaeen_NZ
dc.titleUnexpected microfungal diversity : woody decay Lasiosphaeriaceae, Chaetosphaeriaceae and Helminthosphaeriaceae of New Zealanden_NZ
dc.typeThesisen_NZ
thesis.degree.disciplineDepartment of Botanyen_NZ
thesis.degree.nameDoctor of Philosophyen_NZ
thesis.degree.grantorUniversity of Otagoen_NZ
thesis.degree.levelDoctoral Thesesen_NZ
otago.interloanyes
otago.openaccessAbstract Only
 Find in your library

Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item is not available in full-text via OUR Archive.

If you would like to read this item, please apply for an inter-library loan from the University of Otago via your local library.

If you are the author of this item, please contact us if you wish to discuss making the full text publicly available.

This item appears in the following Collection(s)

Show simple item record