scholarly journals Colletotrichum Species Causing Anthracnose of Citrus in Australia

2021 ◽  
Vol 7 (1) ◽  
pp. 47
Author(s):  
Weixia Wang ◽  
Dilani D. de Silva ◽  
Azin Moslemi ◽  
Jacqueline Edwards ◽  
Peter K. Ades ◽  
...  

Colletotrichum spp. are important pathogens of citrus that cause dieback of branches and postharvest disease. Globally, several species of Colletotrichum have been identified as causing anthracnose of citrus. One hundred and sixty-eight Colletotrichum isolates were collected from anthracnose symptoms on citrus stems, leaves, and fruit from Victoria, New South Wales, and Queensland, and from State herbaria in Australia. Colletotrichum australianum sp. nov., C. fructicola, C. gloeosporioides, C. karstii, C. siamense, and C. theobromicola were identified using multi-gene phylogenetic analyses based on seven genomic loci (ITS, gapdh, act, tub2, ApMat, gs, and chs-1) in the gloeosporioides complex and five genomic loci (ITS, tub2, act, chs-1, and his3) in the boninense complex, as well as morphological characters. Several isolates pathogenic to chili (Capsicum annuum), previously identified as C. queenslandicum, formed a clade with the citrus isolates described here as C. australianum sp. nov. The spore shape and culture characteristics of the chili and citrus isolates of C. australianum were similar and differed from those of C. queenslandicum. This is the first report of C. theobromicola isolated from citrus and the first detection of C. karstii and C. siamense associated with citrus anthracnose in Australia.

2021 ◽  
Author(s):  
Ryan P. O'Donnell ◽  
Jeremy J. Bruhl ◽  
Ian R.H. Telford ◽  
Trevor C. Wilson ◽  
Heidi C. Zimmer ◽  
...  

Research into the systematics of Prostanthera has recently revealed a close evolutionary relationship among P. phylicifolia s. str., the critically endangered P. gilesii, and a population of uncertain identity from the Central Tablelands of New South Wales, Australia. Previous analyses were unable to establish whether genetic boundaries separated these taxa. This study aimed to assess the species boundaries among these three taxa using a combination of single-nucleotide polymorphisms (SNP) sampled at the population-scale and multivariate analysis of morphological characters. Non-parametric and parametric statistics, neighbour-network analysis, phylogenetic analysis, and ancestry coefficient estimates all provided support for discrete genetic differences between the three taxa. Morphological phenetic analysis identified a suite of characters that distinguished each of these taxa. This corroboration of evidence supports the presence of three independently evolving lineages. Prostanthera gilesii and P. phylicifolia s. str. are distinct species independent from the third taxon which is described here as P. volucris R.P.O'Donnell. A detailed description, diagnostic line drawings and photographs are provided. We evaluate P. volucris as satisfying criteria to be considered Critically Endangered.


Zootaxa ◽  
2020 ◽  
Vol 4832 (1) ◽  
pp. 1-75
Author(s):  
SVATOPLUK BÍLÝ ◽  
MARK HANLON

Taxonomic revision of the genus Bubastes Laporte & Gory, 1836. Thirteen new species are described: Bubastes barkeri sp. nov. (New South Wales, Queensland, Victoria), B. deserta sp. nov. (South Australia), B. dichroa sp. nov. (Western Australia), B. flavocaerulea sp. nov. (New South Wales, Queensland), B. hasenpuschi sp. nov. (Queensland), B. iridiventris sp. nov. (Western Australia), B. iris sp. nov. (Western Australia), B. macmillani sp. nov. (Western Australia), B. magnifica sp. nov. (Queensland, New South Wales), B. michaelpowelli sp. nov. (Western Australia), B. pilbarensis sp. nov. (Western Australia), B. remota sp. nov. (Northern Territory) and B. viridiaurea sp. nov. (Western Australia). The following seventeen new synonyms are proposed: Bubastes thomsoni Obenberger, 1928, syn. nov. = B. australasiae Obenberger, 1922, B. olivina Obenberger, 1920, syn. nov. = Neraldus bostrychoides Théry 1910, B. boisduvali Obenberger, 1941, syn. nov. = B. erbeni Obenberger, 1941, B. borealis Obenberger, 1941, syn. nov. = B. globicollis Thomson, 1879, B. laticollis Blackburn, 1888, syn. nov. = B. globicollis Thomson, 1879, B. simillima Obenberger, 1922, syn. nov. = B. globicollis Thomson, 1879, B. obscura Obenberger, 1922, syn. nov. = B. inconsistans Thomson, 1879, B. septentrionalis Obenberger, 1941, syn. nov. = B. inconsistans Thomson, 1879, B. viridicupraea Obenberger, 1922, syn. nov. = B. inconsistans Thomson, 1879, B. blackburni Obenberger, 1941, syn. nov. = B. kirbyi Obenberger, 1928, B. chapmani Obenberger, 1941, syn. nov. = B. kirbyi Obenberger, 1928, B. aenea Obenberger, 1922, syn. nov. = B. niveiventris Obenberger, 1922, B. saundersi Obenberger, 1928, syn. nov. = B. odewahni Obenberger, 1928, B. occidentalis Blackburn, 1891, syn. nov. = B. sphaenoida Laporte & Gory, 1836, B. persplendens Obenberger, 1920, syn. nov. = B. sphaenoida Laporte & Gory, 1836, B. splendens Blackburn, 1891, syn. nov. = B. sphaenoida Laporte & Gory, 1836 and B. strandi Obenberger, 1920, syn. nov. = B. suturalis Carter, 1915. Neotype is designated and redescribed for Bubastes cylindrica W. J. Macleay, 1888 and lectotypes are designated for Bubastes thomsoni Obenberger, 1928 and B. leai Carter, 1924. Morphological characters of the genus are presented and all species are illustrated (incl. historical types) and a key is provided for all species of the genus. 


1994 ◽  
Vol 7 (2) ◽  
pp. 171 ◽  
Author(s):  
BJ Conn ◽  
PG Richards

The Australasian species informally known as 'Oxalis sp. A' in New South Wales is here formally named Oxalis thompsoniae Conn & Richards (Oxalis section Corniculatae). A full description and illustrations of it, together with relevant notes on the morphological characters which are taxonomically useful in Oxalis section Corniculatae are provided.


2009 ◽  
Vol 57 (2) ◽  
pp. 77 ◽  
Author(s):  
Gopal Murugan ◽  
Hortencia Obregón-Barboza ◽  
Alejandro M. Maeda-Martínez ◽  
Brian V. Timms

The only species of the genus Triops in Australia, T. australiensis, is found to reproduce by gonochorism. Morphological and reproductive data and molecular analyses of fragments of mitochondrial genes 12S rRNA (12S) and cytochrome oxidase I (COI) indicate that a Triops population from the middle Paroo in north-western New South Wales is composed of two different entities, Triops cf. australiensis lineage A, and T. cf. australiensis lineage B. Gonad histology in individuals with ovisacs of lineage A revealed no evidence of testicular tissue; however, large testicular lobes were found in individuals with ovisacs of lineage B, indicating that they were anatomically hermaphrodites. This is the first record of Australian hermaphroditic Triops. For each lineage, a single haplotype of each gene was obtained. Molecular genetic distance and phylogenetic analyses confirmed the closer relationship and monophyly of the two lineages with T. australiensis (GenBank) when compared with Triops species from other continents. COI haplotypes of lineage A and lineage B differed by 7.7% from each other and differed by 10.2% and 9.6% from a published T. australiensis sequence, respectively. The 12S haplotypes of lineage A and lineage B differed by 3.3% from each other and differed by 2% and 2.5% from a published T. australiensis sequence, respectively. Our results suggest that the two co-occurring Triops lineages probably represent two species that are distinct from T. australiensis.


2008 ◽  
Vol 59 (4) ◽  
pp. 351 ◽  
Author(s):  
Dean R. Jerry

The geologically complex eastern Australian coastal margin supports the highest taxonomic diversity of freshwater fishes on the continent. However, mechanisms leading to coastal biogeographic patterns are poorly understood. A 399-bp fragment of the hypervariable mtDNA control region was sequenced from populations of eel-tailed catfish (Tandanus tandanus) to determine their phylogeographic structure and to relate this to proposed biogeographic mechanisms and landform evolution. Genetic structure in Tandanus is complex, with haplotypes clustering into three lineages: a phylogenetically distant, northern Queensland clade that is probably a new species; a mid-northern New South Wales clade corresponding to the recently discovered ‘Bellinger’ Tandanus cryptic species; and a third ‘derived’ clade T. tandanus. Phylogenetic analyses suggest that eastern Australian Tandanus originally invaded freshwaters from the coast where volcanic activity in the north and increasing aridity from the Paleocene reduced inter-fluvial connections, causing genetic divergence of northern Queensland and mid-northern New South Wales populations. The haplotypes represented by Murray–Darling drainage T. tandanus were the most derived, indicating that this species originally evolved on the coast and subsequently colonised the Murray–Darling basin. Tandanus in eastern Australia is phylogenetically structured and possibly comprises three species in this region; a pattern potentially shared by other eastern Australian freshwater fishes.


2003 ◽  
Vol 25 (1) ◽  
pp. 70 ◽  
Author(s):  
C. Waters ◽  
G. Melville ◽  
A. Grice

Eleven species of native grass were collected from 51 sites throughout western New South Wales and south-west Queensland. Approximately 10 whole plants of each species were collected from a site but not all species were collected from each site. Plants were grown in a common environment at Trangie in central western New South Wales and plant morphological and floristic characteristics measured. Data reported here are for observations made in the third year, by which time differences between populations were likely to be more genetic than environmental. Principal component and discriminant analyses revealed a strong relationship between site of origin and plant morphological characteristics, which explained between 61% and 93% of the variation within species. For all but one species, site was significantly correlated with these morphological characteristics. Site could be predicted from morphological characters with a success rate usually greater than 80%. These morphological characteristics must reflect genotypic differences among the collection from the different sites. We were unable to relate this variation to any of a range of site characteristics. Distance between sites could not be used as an indicator of morphological differences between populations. The implications of these findings are discussed in terms of providing strong evidence for the existence of ecotypes and for obtaining appropriate seed sources for revegetation/restoration programs.


1994 ◽  
Vol 7 (4) ◽  
pp. 393 ◽  
Author(s):  
K Thiele ◽  
PY Ladiges

The Banksia integrifolia (Proteaceae : Grevilleoideae) species complex currently comprises three varieties: var. aquilonia from northern Queensland; var. integrifolia from coastal Victoria and New South Wales; and var. compar, which is polymorphic and comprises two forms, a coastal form from southern Queensland and a montane form from north-eastern New South Wales and south-eastern Queensland. Ordination analysis of morphological characters of adults and seedlings indicates that the montane populations of var. compar comprise a separate taxon, which is phenetically closer to var. integrifolia than it is to typical var. compar. Banksia integrifolia var. aquilonia is phenetically quite distinct from the remaining taxa. The new names and combinations Banksia integrifolia subsp. monticola K.R. Thiele, B. integrifolia subsp. aquilonia (A.S. George) K.R. Thiele and B. integrifolia subsp. compar (R.Br.) K.R. Thiele are published.


2014 ◽  
Vol 27 (4) ◽  
pp. 257
Author(s):  
Phillip F. Rose ◽  
Karen L. Wilson ◽  
Ian R. H. Telford ◽  
Robert W. Lamont ◽  
Jeremy J. Bruhl

Uncertainty in identifying Allocasuarina shrubs of the North Coast botanical region of New South Wales and south-eastern Queensland prompted investigation of species limits using morphological and cytological data. PATN analysis using 36 morphometric characters, seedling morphology and cytogenetic analysis supported the existing circumscription of A. defungens and A. simulans. Trees of A. littoralis were observed throughout the study area and the distinct morphology of the diploid and polyploid forms is noted. Further work is required to establish whether these differences are consistent over the full range of the species. Shrubby plants of A. sect. Cylindropitys, other than the above species, growing along the NSW North Coast are currently known by several names, including A. defungens×A. littoralis. These plants were found to be morphologically most similar to A. emuina and A. thalassoscopica from south-eastern Queensland and to have similar phenotypes. Allocasuarina thalassoscopica is recircumscribed on morphological characters to encompass these shrubby plants in New South Wales and A. emuina and A. thalassoscopica from south-eastern Queensland. A key is provided for identification of plants of A. sect. Cylindropitys. Counts of chromosomes found that recircumscribed A. thalassoscopica is tetraploid and A. defungens is triploid at Nabiac but tetraploid at Khappinghat Nature Reserve. The results of the present study are consistent with a hypothesis of parallel evolution, which is possibly due to edaphic factors and requires further study.


Zootaxa ◽  
2021 ◽  
Vol 5032 (2) ◽  
pp. 283-289
Author(s):  
M. B. MALIPATIL ◽  
H. M. YESHWANTH ◽  
ELŐD KONDOROSY

The New Guinean genus Heissothignus Slater & Brailovsky, 2006 (Hemiptera: Heteroptera: Meschiidae) possesses several morphological characters unique to family Meschiidae but not occurring in Heterogastridae, confirming its placement within the family Meschiidae. A key to the genera of the family Meschiidae is presented. The two species of the genus Meschia Distant, 1910 recorded from the Indian subcontinent are reviewed, and the following new synonymy is proposed: M. pugnax Distant, 1910 = M. quadrimaculata Distant, 1910, syn. nov. A revised key to the species of Meschia is provided. New country and state records are provided for M. pugnax (India: Andhra Pradesh, Karnataka, Meghalaya, Rajasthan, Tamil Nadu and Uttarakhand), Meschia barrowensis Malipatil, 2014 (Australia: New South Wales) and Meschia zoui Gao & Malipatil, 2019 (Thailand).  


Zootaxa ◽  
2005 ◽  
Vol 961 (1) ◽  
pp. 1 ◽  
Author(s):  
GREGORY D. EDGECOMBE ◽  
LAUREN M. HOLLINGTON

The henicopid centipede Henicops Newport, 1845, is common and widespread in wet forests in Australia and New Zealand. A new species of Henicops, H. washpoolensis, is widely distributed in northern New South Wales and southern Queensland, ranging into the wet tropics of north Queensland. Parsimony analysis of morphological characters identifies the monophyly of an Australasian group within Henicops relative to more distantly allied species from Lord Howe Island and New Caledonia. The most parsimonious cladograms unite the three species from southeastern Australia and New Zealand to the exclusion of congeners from Western Australia and north Queensland or unite all Australasian species to the exclusion of H. washpoolensis.


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