Pseudoheterocaryum, a new genus segregated from Heterocaryum (Boraginaceae) on the basis of molecular data

2017 ◽  
Vol 30 (1) ◽  
pp. 105 ◽  
Author(s):  
Nasim Saadati ◽  
Maryam Khoshsokhan Mozaffar ◽  
Mahboubeh Sherafati ◽  
Shahrokh Kazempour Osaloo
Keyword(s):  
New Genus ◽  
Sequence Data ◽  
Intergenic Spacer ◽  
Molecular Data ◽  
Trnl Intron ◽  
Internal Transcribed Spacer Region ◽  
Rdna Its ◽  
Taxonomic Descriptions ◽  
Diagnostic Key ◽  
Distinct Branch

The phylogeny of Heterocaryum and Suchtelenia was examined using sequence data from the internal transcribed spacer region of the nuclear rDNA (ITS) and plastid trnL intron and trnL–trnF intergenic spacer (trnL–F) regions. Results indicated that Heterocaryum is non-monophyletic because of the inclusion of Suchtelenia calycina (C.A.Mey.) A.DC. Heterocaryum laevigatum (Kar. & Kir.) A.DC. formed a distinct branch sister to S. calycina and remaining Heterocaryum species. Hence, all species of Heterocaryum except H. laevigatum (type species of the genus) are transferred to a new genus, Pseudoheterocaryum. Taxonomic descriptions are presented for Pseudoheterocaryum and Heterocaryum, as well as a diagnostic key to the three genera included in the present study.

scholarly journals Introducing Chaetothyriothecium, a new genus of Microthyriales

Phytotaxa ◽  
2014 ◽  
Vol 161 (2) ◽  
pp. 157 ◽  
Author(s):  
Sinang Hongsanan ◽  
Putarak Chomnunti ◽  
Pedro W. Crous ◽  
Ekachai Chukeatirote ◽  
Kevin D. Hyde
Keyword(s):  
New Genus ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
Plant Host ◽  
Dna Sequence Data ◽  
Limited Sampling ◽  
Black Spots ◽  
Gene Data ◽  
Central Thailand

The order Microthyriales comprises foliar biotrophs, epiphytes, pathogens or saprobes that occur on plant leaves and stems. The order is relatively poorly known due to limited sampling and few in-depth studies. There is also a lack of phylogenetic data for these fungi, which form small black spots on plant host surfaces, but rarely cause any damage to the host. A "Microthyriaceae"-like fungus collected in central Thailand is described as a new genus, Chaetothyriothecium (type species Chaetothyriothecium elegans sp. nov.). Phylogenetic analyses of LSU gene data showed this species to cluster with other members of Microthyriales, where it is related to Microthyrium microscopicum the type of the order. The description of the new species is supplemented by DNA sequence data, which resolves its placement in the order. Little molecular data is available for this order, stressing the need for further collections and molecular data.

scholarly journals When forms meet genes: revision of the scleractinian genera Micromussa and Homophyllia (Lobophylliidae) with a description of two new species and one new genus

2016 ◽  
Vol 85 (4) ◽  
pp. 387-422 ◽  
Author(s):  
Roberto Arrigoni ◽  
Francesca Benzoni ◽  
Danwei Huang ◽  
Hironobu Fukami ◽  
Chaolun Allen Chen ◽  
...  
Keyword(s):  
New Genus ◽  
Nuclear Dna ◽  
New Caledonia ◽  
Sequence Data ◽  
Intergenic Spacer ◽  
Taxonomic Revision ◽  
Its Region ◽  
Distinct Species ◽  
Morphological Data ◽  
Eastern Australia

The scleractinian family Lobophylliidae is undergoing a major taxonomic revision thanks to the combination of molecular and morphological data. In this study, we investigate the evolutionary relationships and the macro- and micromorphology of six nominal coral species belonging to two of the nine molecular clades of the Lobophylliidae, clades A and B, and of Symphyllia wilsoni, a lobophylliid species analyzed from a molecular point of view for the first time. Sequence data from mitochondrial DNA (COI and the intergenic spacer between COI and l-rRNA), and nuclear DNA (histone H3 and ITS region) are used to generate robust molecular phylogenies and a median-joining haplotype network. Molecular results are strongly in agreement with detailed observations of gross- and fine-scale morphology of skeletons, leading to the formal revision of the genera Micromussa and Homophyllia and the description of two newly discovered zooxanthellate shallow-water species, Micromussa pacifica sp. nov. Benzoni & Arrigoni and Micromussa indiana sp. nov. Benzoni & Arrigoni, and a new genus, Australophyllia gen. nov. Benzoni & Arrigoni. In particular, Acanthastrea lordhowensis and Montastraea multipunctata are moved into Micromussa, A. hillae is synonymized with A. bowerbanki and is transferred to Homophyllia, and a revised diagnosis for both genera is provided. Micromussa pacifica sp. nov. is described from the Gambier Islands with its distribution spanning New Caledonia and eastern Australia. Despite a superficial resemblance with Homophyllia australis, it has distinctive macroand micromorphological septal features. Micromussa indiana sp. nov., previously identified as M. amakusensis, is here described from the Gulf of Aden and the southern Red Sea as a distinct species that is genetically separated from M. amakusensis and is morphologically distinct from the latter due to its smaller corallite size and lower number of septa. Finally, molecular trees show that S. wilsoni is closely related, but molecularly separated from clades A and B, and, also based on a unique combination of corallite and sub-corallite characters, the species is moved into Australophyllia gen. nov. These findings confirm the need for using both genetic and morphological datasets for the ongoing taxonomic revision of scleractinian corals.

New taxa in Drosanthemum and a new genus in Drosanthemeae (Ruschioideae, Aizoaceae)

Phytotaxa ◽  
2020 ◽  
Vol 459 (2) ◽  
pp. 139-154
Author(s):  
CORNELIA KLAK ◽  
PAVEL HANÁČEK ◽  
ODETTE CURTIS-SCOTT ◽  
ANSO LE ROUX ◽  
PETER V. BRUYNS
Keyword(s):  
South Africa ◽  
New Species ◽  
New Genus ◽  
Sequence Data ◽  
Morphological Characteristics ◽  
Molecular Data ◽  
Western Cape ◽  
Monotypic Genus ◽  
Nomenclatural Change ◽  
A New Species

A phylogeny of all nine subgenera of Drosanthemum, based on chloroplast sequence-data, is presented. The results confirm some previously published facts, e.g. that D. zygophylloides is sister to Drosanthemum. We propose to treat this species as a new monotypic genus, Lemonanthemum, which differs from Drosanthemum in features of the leaves and fruit-stalks. In Drosanthemum s.s., the small subg. Quadrata, characterized by 4-locular fruits, is highly supported as sister to the remainder of Drosanthemum (where fruits are 5-locular). Further, our data support the transfer of Delosperma pubipetalum to Drosanthemum (where a nomenclatural change is also made). The pubescent petals, 5-locular fruits with narrow covering membranes and downward-pointing hair-like papillae on the branches suggest that D. pubipetalum is close to D. papillatum and belongs to subg. Quastea. Another species, D. badspoortense, which had been placed in D. subg. Quastea on account of its narrow covering membranes, is shown to belong to Delosperma and also lacks the unique structure of the fruit-stalk of Drosanthemum. In addition, a new species, D. overbergense, is described from disjunct patches of remnant renosterveld within the Overberg and near Albertinia, in the Western Cape of South Africa. Morphological characteristics suggest that this species belongs to subg. Xamera, but this was not corroborated by our molecular data. Finally, a new name—Drosanthemum calcareum—is proposed for the illegitimate D. intermedium and a lectotype (at BOL) is designated for D. pubipetalum. The lectotypification of D. badspoortense is also proposed.

Deniquelata barringtoniae gen. et sp. nov., associated with leaf spots of Barringtonia asiatica

Phytotaxa ◽  
2013 ◽  
Vol 105 (1) ◽  
pp. 11 ◽  
Author(s):  
HIRAN A. ARIYAWANSA ◽  
SAJEEWA S.N. MAHARACHCHIKUMBURA ◽  
SAMANTHA C.KARUNARATHNE ◽  
EKACHAI CHUKEATIROTE ◽  
ALI H. BAHKALI ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Genus ◽  
Sequence Data ◽  
Molecular Data ◽  
The Other ◽  
New Genus And Species ◽  
Leaf Spots ◽  
The Family ◽  
Pathogenicity Testing

Deniquelata barringtoniae gen. et sp. nov. (Montagnulaceae) forms numerous ascomata on distinct zonate leaf spots of Barringtonia asiatica (Lecythidaceae). We isolated this taxon and sequenced the 18S and 28S nrDNA. The result of phylogenetic analysis based on 18S and 28S nrDNA sequence data indicate that the genus belongs in the family Montagnulaceae, Dothideomycetes, Ascomycota. The ascomata are immersed, dark brown to black, with bitunicate asci and brown, muriform ascospores. Deniquelata is distinguished from the other genera in Montagnulaceae based on its short, broad, furcate and pedicellate asci, verruculose ascospores with short narrow pseudoparaphyses with parasitic naturee and this is also supported by molecular data. A new genus and species is therefore introduced to accommodate this taxon. We used isolates of this species to show via pathogenicity testing that the taxon is able to cause leaf spots when leaves are pin pricked.

Cucurbitinus gen. nov. (Halosphaeriaceae, Microascales), a new genus to accommodate Cucurbitinus constrictus comb. nov. and Cucurbitinus ibericus comb. nov.

Phytotaxa ◽  
2020 ◽  
Vol 455 (2) ◽  
pp. 119-136
Author(s):  
LING-LING LIU ◽  
NINGGUO LIU ◽  
JING YANG ◽  
YAYA CHEN ◽  
ZUOYI LIU
Keyword(s):  
New Taxa ◽  
New Genus ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Molecular Data ◽  
Freshwater Lake ◽  
Guizhou Province

Two strains, representing trichocladium-like species, were collected from a freshwater lake in Guizhou Province, China. Based on the morphological characters, they were well identified as Trichocladium constrictum who lacked molecular data. In the phylogenetic analyses of combined LSU, ITS and SSU sequence data, the collections cluster together with Cirrenalia iberica within Halosphaeriaceae but formed a distinct clade to the type of Cirrenalia (Halosphaeriaceae) and Trichocladium (Chaetomiaceae). The significant long conidiophores of Trichocladium constrictum differ from those of other Trichocladium species. The straight conidia of Cirrenalia iberica is distinguished from curved conidia of other Cirrenalia species. In line with the morphological characters and phylogenetic analyses, Cucurbitinus gen. nov. is proposed to accommodate Trichocladium constrictum and Cirrenalia iberica as Cucurbitinus constrictus comb. nov. and Cucurbitinus ibericus comb. nov. Descriptions and illustrations of the new taxa are provided with discussion of the reclassification.

Xanthagaricus siamensis sp. nov. (Agaricaceae), a new species with dull green lamellae from northern Thailand

Phytotaxa ◽  
2020 ◽  
Vol 437 (1) ◽  
pp. 14-22
Author(s):  
YUAN S. LIU ◽  
JIAN-KUI (JACK) LIU ◽  
PHONGEUN SYSOUPHANTHONG ◽  
KEVIN D. HYDE ◽  
SAISAMORN LUMYONG
Keyword(s):  
New Species ◽  
Sequence Data ◽  
Large Subunit ◽  
Morphological Characteristics ◽  
Molecular Data ◽  
Nuclear Ribosomal Dna ◽  
Molecular Evidence ◽  
Internal Transcribed Spacer Region ◽  
Northern Thailand ◽  
A New Species

Xanthagaricus siamensis, a new species in the family Agaricaceae, was discovered in northern Thailand and is here introduced based on its morphological features and molecular data. It is characterized by small to medium-sized basidiomata, a convex to plano-convex with depressed center pileus when mature, the presence of greyish orange to violet-brown fibrillose squamules on the pileus, lamellae that start out white, change to pinkish white when damaged, then change to dull green with age. Additionally, the annulus is fugacious, and the pileipellis is recognized as a cutis which morphologically distinguishes it from all other known Xanthagaricus. Phylogenetic analysis of the internal transcribed spacer region (ITS) and the large subunit of the nuclear ribosomal DNA (nrLSU) sequence data indicated that the three specimens of X. siamensis form a distinct lineage within Xanthagaricus, and they formed a well-supported clade representing the genus Xanthagaricus. Detailed illustrations of macro- and micro-morphological characteristics and descriptions are provided, as well as other relevant molecular evidence.

Kamalia indica, a new genus and species belonging to Diaporthales (Ascomycota, Fungi) described based on morphology and molecular phylogeny

Phytotaxa ◽  
2019 ◽  
Vol 425 (4) ◽  
pp. 233-243
Author(s):  
SHIWALI RANA ◽  
SANJAY KUMAR SINGH
Keyword(s):  
Dna Sequences ◽  
Internal Transcribed Spacer ◽  
New Genus ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Large Subunit ◽  
Type Specimen ◽  
Morphological Description ◽  
Fungal Culture ◽  
Internal Transcribed Spacer Region

A fungal taxa isolated from leaf spots of Mallotus philippensis from Kangra district of North-Western Himalayan region of India is established as a new genus based on morphological characters of asexual-morphs, cultural characteristics and phylogenetic analyses of the partial nuclear ribosomal 28S large subunit (LSU) and internal transcribed spacer (ITS) rDNA sequence data. The generic placement of the genus has been determined based on DNA sequences from authenticated isolates. The present taxon has turned out to be distinct, showing nearly 90% identity with other known genera in Diaporthales based on nrDNA internal transcribed spacer region. The morphological description is provided for the new taxa and compared with the similar taxa belonging to the order Diaporthales. The culture was found to show heavy sporulation in all kind of media. The type specimen and ex type culture have been deposited in the Ajrekar Mycological Herbarium (AMH) and National Fungal Culture Collection of India (NFCCI-WDCM 932), respectively.

An expanded phylogenetic analysis of Austrostipa (Poaceae: Stipeae) to test infrageneric relationships

2012 ◽  
Vol 25 (1) ◽  
pp. 1 ◽  
Author(s):  
Anna E. Syme ◽  
Daniel J. Murphy ◽  
Gareth D. Holmes ◽  
Stuart Gardner ◽  
Rachael Fowler ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Sequence Data ◽  
Strong Support ◽  
Molecular Data ◽  
Species Level ◽  
Internal Transcribed Spacer Region ◽  
Deep Coalescence ◽  
History Of ◽  
Levels Of Support

Although the Australasian grass genus Austrostipa is species rich, abundant and ecologically significant, the subgeneric classification of its 62 species has not been comprehensively tested with molecular data. We used three molecular markers from 51 species to determine a phylogeny of the genus and found strong support for the following seven of the existing subgenera: Falcatae, Austrostipa, Aulax, Lobatae, Bambusina, Lancea and Longiaristatae. The molecular data do not support Tuberculatae and Eremophilae, which could be combined with subgenus Austrostipa. The data are equivocal or insufficient regarding monophyly of Ceres, Arbuscula, Petaurista and Lanterna. Data from the nuclear internal transcribed spacer region appear to be suitable for phylogenetic analysis of this group, and the degree of sequence variability resolves species-level relationships with good levels of support. In contrast, chloroplast sequence data from the matK and rbcL genes do not resolve most relationships at the species level, and the inferred phylogeny hints at gene duplication, chloroplast capture, or deep coalescence in the evolutionary history of Austrostipa.

Taxonomic novelties from Irano-Turanian region and NE Iran: Oreosalsola, a new segregate from Salsola s.l., two new species in Anabasis and Salvia, and two new combinations in Caroxylon and Seseli

Phytotaxa ◽  
2016 ◽  
Vol 249 (1) ◽  
pp. 159 ◽  
Author(s):  
HOSSEIN AKHANI ◽  
ROXANA KHOSHRAVESH ◽  
MARYAM MALEKMOHAMMADI
Keyword(s):  
New Species ◽  
New Genus ◽  
Sequence Data ◽  
Isotope Composition ◽  
Molecular Data ◽  
Phylogenetic Position ◽  
Kranz Anatomy ◽  
Kopet Dagh ◽  
Associated Species ◽  
Ne Iran

Oreosalsola, a non-C4 lineage is described as a new genus segregated from Salsola s.l. (Chenopodiaceae). The phylogenetic position and anatomical structure of the new genus in relation to photosynthetic types are discussed. Anabasis firouzii (Chenopodiaceae) and Salvia shahkuhmahalei (Lamiaceae) are described from Golestan National Park (GNP) and Ghorkhod Protected Area (GPA), NE Iran. The new Anabasis is a C4 plant according to its Salsoloid Kranz anatomy and carbon isotope composition. Anabasis firouzii grows on species-poor marl outcrops of Kopet Dagh Mountains in GNP and GPA. The phylogenetic relationship of the new species is discussed using ITS sequence data. The position of Anabasis setifera within the genus Anabasis (not Salsola) is confirmed by updated molecular data. Salvia shahkuhmahalei is closely related to S. rhytidea that is native of Afghanistan and S Iran. Salsola iljinii is transferred to Caroxylon following a new phylogenetic concept of Salsoleae. Seseli tortusosum subsp. kiabii (Apiaceae) is elevated to the species level, which is justified by the recent knowledge. The new species are illustrated; their habitat, plant communities, associated species, threat categories and phytogeographic importance are discussed.

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