The identity of Porphyra columbina (Bangiales, Rhodophyta) originally described from the New Zealand subantarctic islands

2010 ◽  
Vol 23 (1) ◽  
pp. 16 ◽  
Author(s):  
W. A. Nelson ◽  
J. E. S. Broom
Keyword(s):  
New Zealand ◽  
Growth Form ◽  
Sequence Data ◽  
Falkland Islands ◽  
Common Haplotype ◽  
Marginal Areas ◽  
Subantarctic Islands ◽  
Wide Range ◽  
Anatomical Characters ◽  
Subantarctic Region

Porphyra columbina Mont. (Bangiales, Rhodophyta) was collected in 1840 from the Auckland Islands in the New Zealand subantarctic region. This name has been applied to bladed Bangiales exhibiting a wide range of morphological forms, and found throughout the New Zealand region and in much of the southern hemisphere, particularly in Australia and Chile. By using morphological and anatomical characters as well as nSSU and rbcL sequence data, Montagne’s description of P. columbina is re-examined in the light of recent collections from the New Zealand region and the Southern Ocean. We conclude that P. columbina is primarily distributed in cold temperate conditions, including the Auckland, Campbell, Antipodes, Chatham and Falkland Islands, and is only rarely present on mainland New Zealand. Specimens from the type locality and other subantarctic locations have a rosette to ovate growth form and are typically less than 5 cm in height/width, with specimens from more northern locations including some ribbon-like growth forms. Thalli are purple to grey, bleaching golden green. Mature specimens have a distinctly spotted appearance, with conspicuous large, purple–red clusters of phyllospores and golden marginal areas of spermatangia. Five unique rbcL haplotypes, differing by 1–6 substitutions, were obtained from 26 specimens, with the most common haplotype found in specimens from the Auckland, Campbell and the Falkland Islands.

A new genus and species in the Sporolithales (Corallinophycidae, Rhodophyta) from northern New Zealand: Roseapetra farriae sp. nov. 

Phytotaxa ◽  
2021 ◽  
Vol 490 (1) ◽  
pp. 35-46
Author(s):  
WENDY A. NELSON ◽  
KATE F. NEILL ◽  
BRENTON A. TWIST ◽  
JUDY E. SUTHERLAND
Keyword(s):  
New Zealand ◽  
Intertidal Zone ◽  
New Genus ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
New Genus And Species ◽  
Diagnostic Features ◽  
Rocky Reefs ◽  
Anatomical Characters

A new genus in the order Sporolithales (Corallinophycidae, Rhodophyta), Roseapetra farriae gen. et sp. nov. is described, based on material from northern New Zealand. Previously placed in the genus Heydrichia on the basis of morpho-anatomical characters, phylogenetic analyses have shown that this northern New Zealand taxon is not resolved with either Heydrichia or Sporolithon, the two genera currently recognized in this order. Roseapetra displays the key diagnostic features of the order, namely the production of cruciately divided tetrasporangia singly within calcified sporangial compartments. In Roseapetra the tetrasporangia are surrounded by an involucre, and mature tetrasporangia are subtended by up to three stalk cells. The tetrasporangial compartments are shed once spores have been released. Gametangial conceptacles are not shed but become buried, with secondary meristem producing lens-like areas of regrowth. While there are several morpho-anatomical characters that separate Roseapetra and Sporolithon, there are none that can be used to distinguish Roseapetra from Heydrichia: recognition of Roseapetra requires sequence data. Roseapetra farriae is found growing in the low intertidal zone on rocky reefs in shaded, understorey habitats.

Relationships of the Porphyra (Bangiales, Rhodophyta) flora of the Falkland Islands: a molecular survey using rbcL and nSSU sequence data

2010 ◽  
Vol 23 (1) ◽  
pp. 27 ◽  
Author(s):  
Judy E. S. Broom ◽  
Wendy A. Nelson ◽  
Tracy J. Farr ◽  
Louise E. Phillips ◽  
Margaret Clayton
Keyword(s):  
South Africa ◽  
New Zealand ◽  
Southern Ocean ◽  
North Atlantic ◽  
Phylogenetic Relationships ◽  
Sequence Data ◽  
Molecular Data ◽  
Falkland Islands ◽  
Rbcl Gene ◽  
Molecular Survey

The phylogenetic relationships of Porphyra collected from the Falkland Islands have been examined using molecular data from two loci, the plastid rbcL gene and the nuclear nSSU gene, in conjunction with morphological observations. Nine species have been distinguished, belonging to four distinct lineages within the Bangiales, differing from one another by 16–137 substitutions in the rbcL gene. One species is closely related to P. amplissima, a north Atlantic taxon, three are resolved in a clade that includes several species from New Zealand, Australia and South Africa, as well as P. umbilicalis, whereas four others are more closely related to Southern Ocean species, including P. cinnamomea, P. virididentata and several as yet unnamed taxa from New Zealand, Australia and South Africa. Three species, one of which we identify as P. columbina, appear to be widely distributed in the Southern Ocean, with representatives on the Falkland Islands and on islands of the Australian and New Zealand subantarctic.

Natural enemies of bridal creeper Asparagus asparagoides in New Zealand

2008 ◽  
Vol 61 ◽  
pp. 362-367
Author(s):  
H.M. Harman ◽  
N.W. Waipara ◽  
C.J. Winks ◽  
L.A. Smith ◽  
P.G. Peterson ◽  
...  
Keyword(s):  
New Zealand ◽  
Natural Enemies ◽  
Invertebrate Fauna ◽  
Classical Biocontrol ◽  
Wide Range

Bridal creeper is a weed of natural and productive areas in the northern North Island of New Zealand A classical biocontrol programme was initiated in 20052007 with a survey of invertebrate fauna and pathogens associated with the weed in New Zealand Although bridal creeper was attacked by a wide range of generalist invertebrates their overall damage affected

scholarly journals mtDNAcombine: tools to combine sequences from multiple studies

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Eleanor F. Miller ◽  
Andrea Manica
Keyword(s):  
Sequence Data ◽  
Data Extraction ◽  
Bayesian Skyline Plot ◽  
Model Organisms ◽  
Data Sets ◽  
Data Handling ◽  
Online Database ◽  
Genetic Studies ◽  
Wide Range ◽  
Existing Data

Abstract Background Today an unprecedented amount of genetic sequence data is stored in publicly available repositories. For decades now, mitochondrial DNA (mtDNA) has been the workhorse of genetic studies, and as a result, there is a large volume of mtDNA data available in these repositories for a wide range of species. Indeed, whilst whole genome sequencing is an exciting prospect for the future, for most non-model organisms’ classical markers such as mtDNA remain widely used. By compiling existing data from multiple original studies, it is possible to build powerful new datasets capable of exploring many questions in ecology, evolution and conservation biology. One key question that these data can help inform is what happened in a species’ demographic past. However, compiling data in this manner is not trivial, there are many complexities associated with data extraction, data quality and data handling. Results Here we present the mtDNAcombine package, a collection of tools developed to manage some of the major decisions associated with handling multi-study sequence data with a particular focus on preparing sequence data for Bayesian skyline plot demographic reconstructions. Conclusions There is now more genetic information available than ever before and large meta-data sets offer great opportunities to explore new and exciting avenues of research. However, compiling multi-study datasets still remains a technically challenging prospect. The mtDNAcombine package provides a pipeline to streamline the process of downloading, curating, and analysing sequence data, guiding the process of compiling data sets from the online database GenBank.

scholarly journals Sequence data from isolated lichen-associated melanized fungi enhance delimitation of two new lineages within Chaetothyriomycetidae

2021 ◽  
Vol 20 (7) ◽  
pp. 911-927
Author(s):  
Lucia Muggia ◽  
Yu Quan ◽  
Cécile Gueidan ◽  
Abdullah M. S. Al-Hatmi ◽  
Martin Grube ◽  
...  
Keyword(s):  
Sequence Data ◽  
Single Species ◽  
Sister Group ◽  
Asexual Propagation ◽  
Dna Sequence Data ◽  
Wide Range ◽  
The Family ◽  
Rock Inhabiting Fungi ◽  
Stable Habitat

AbstractLichen thalli provide a long-lived and stable habitat for colonization by a wide range of microorganisms. Increased interest in these lichen-associated microbial communities has revealed an impressive diversity of fungi, including several novel lineages which still await formal taxonomic recognition. Among these, members of the Eurotiomycetes and Dothideomycetes usually occur asymptomatically in the lichen thalli, even if they share ancestry with fungi that may be parasitic on their host. Mycelia of the isolates are characterized by melanized cell walls and the fungi display exclusively asexual propagation. Their taxonomic placement requires, therefore, the use of DNA sequence data. Here, we consider recently published sequence data from lichen-associated fungi and characterize and formally describe two new, individually monophyletic lineages at family, genus, and species levels. The Pleostigmataceae fam. nov. and Melanina gen. nov. both comprise rock-inhabiting fungi that associate with epilithic, crust-forming lichens in subalpine habitats. The phylogenetic placement and the monophyly of Pleostigmataceae lack statistical support, but the family was resolved as sister to the order Verrucariales. This family comprises the species Pleostigma alpinum sp. nov., P. frigidum sp. nov., P. jungermannicola, and P. lichenophilum sp. nov. The placement of the genus Melanina is supported as a lineage within the Chaetothyriales. To date, this genus comprises the single species M. gunde-cimermaniae sp. nov. and forms a sister group to a large lineage including Herpotrichiellaceae, Chaetothyriaceae, Cyphellophoraceae, and Trichomeriaceae. The new phylogenetic analysis of the subclass Chaetothyiomycetidae provides new insight into genus and family level delimitation and classification of this ecologically diverse group of fungi.

Congenital adrenal hyperplasia: molecular mechanisms resulting in 21-hydroxylase deficiency

1986 ◽  
Vol 113 (4_Suppl) ◽  
pp. S315-S320 ◽  
Author(s):  
Patricia A. Donohoue ◽  
Cornelis Van Dop ◽  
Nicholas Jospe ◽  
Claude J. Migeon
Keyword(s):  
Congenital Adrenal Hyperplasia ◽  
Molecular Mechanisms ◽  
Sequence Data ◽  
Phenotypic Expression ◽  
Restriction Pattern ◽  
Class Iii ◽  
Adrenal Hyperplasia ◽  
Hydroxylase Deficiency ◽  
Wide Range ◽  
21 Hydroxylase Deficiency

Abstract 21-Hydroxylase deficiency resulting in congenital adrenal hyperplasia (CAH) is a HLA-linked autosomal recessive disorder that has a wide range of phenotypic expression. Two homologous 21-hydroxylase genes (21-OHA and 21-OHB) occur within the Class III region of the major histocompatibility complex, but only one (21-OHB) appears to function in adrenal steroidogenesis. Our restriction maps, and initial sequence data from White et al. (Pediatr Res 20:274A (1986)) for the two human 21-OH genes reveal a high degree of homology between these genes and a reading frame shift mutation in the 21-OHA gene respectively. Among fourteen control subjects, the intragenic restriction patterns of the 21-OHA and 21-OHB genes are invariant. The few restriction fragment length polymorphisms (RFLPs) found in some controls result from polymorphic restriction sites outside the 21-OH genes. In patients with CAH, several different mechanisms for mutation of the 21-OHB gene have been described: 1) deletion of the unique sequences of the 21-OHB gene, 2) conversion of the unique sequences of the 21-OHB gene to those of 21-OHA, and 3) mutations of 21-OHB which do not result in a detectable alteration of restriction pattern (e.g., point mutations). Duplication of the 21-OHA gene has been found in some patients with attenuated CAH; however, the significance of this finding remains unclear.

Sign in / Sign up

Export Citation Format

Share Document