11,850 results match your criteria morphological characters


Interspecific hybridization between Ganoderma lingzhi and G. applanatum through protoplast fusion.

World J Microbiol Biotechnol 2021 Jun 11;37(7):114. Epub 2021 Jun 11.

Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA, Chungbuk, Eumseong, 27709, South Korea.

Interspecific hybridization between Ganoderma lingzhi and G. applanatum was attempted through polyethylene glycol (PEG) induced fusion technique. The protoplast isolation procedure was simplified, and we obtained a significant number of protoplasts from both Ganoderma species. Read More

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Taxonomic description and phylogenetic placement of two new species of (Hymenoptera: Pteromalidae: Ceinae) from Eocene Baltic amber.

PeerJ 2021 25;9:e10939. Epub 2021 May 25.

Department of Entomology, State Museum of Natural History Stuttgart, Stuttgart, Germany.

is a small genus of chalcid wasps that has received little attention despite the widespread distribution of its extant species. The fossil record of the genus is restricted to a single species from Miocene Dominican amber. We describe two new fossil species, sp. Read More

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[Experimental study on the structure and immune cell phenotypes of the lymphoid tissues in oral lichenoid lesions].

Shanghai Kou Qiang Yi Xue 2021 Apr;30(2):113-119

College of Stomatology, Weifang Medical University. Weifang 261021, Shandong Province, China.

Purpose: To evaluate the existence of tertiary lymphoid structures(TLS) in oral lichenoid lesions and its compositional characteristics of immune cells.

Methods: Tissue samples of normal oral mucosa, oral lichen planus (OLP) and oral lichenoid tissue reaction(OLTR) were collected, thirty cases in each group. Hematoxylin-eosin(H-E) staining was performed to identify the TLS-like structures, and immunohistochemistry (IHC) staining was applied to assess the structure and amount of infiltrating CD3+ T cells, CD19+, CD20+ B cells, CD21+ follicular dendritic cells (FDC), Bcl-6+ germinal centers, CD34+ PNAd+ venules and CD34+ Gp36+ micro lymphatic vessels in TLS of OLL. Read More

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Cyperus prophyllatus: An endangered aquatic new species of Cyperus L. (Cyperaceae) with a exceptional spikelet disarticulation pattern among about 950 species, including molecular phylogenetic, anatomical and (micro)morphological data.

PLoS One 2021 9;16(6):e0249737. Epub 2021 Jun 9.

Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.

Cyperus prophyllatus, an endangered new species of Cyperus (Cyperaceae) from an aquatic ecosystem of the Atlantic Forest, Espírito Santo State, southeastern Brazil, is described and illustrated. The spikelet morphology of Cyperus prophyllatus is unique among the c. 950 species of Cyperus in having both a conspicuous spikelet prophyll and a corky rachilla articulation, which remain persistent at the base of the spikelet after disarticulation. Read More

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First report of pearl millet bacterial leaf blight caused by Pantoea stewartii subspecies indologenes in India.

Plant Dis 2021 Jun 9. Epub 2021 Jun 9.

University of Mysore, 29243, Applied Botany and Biotechnology, Mysore, Karnataka, India;

Pearl millet (Cenchrus americanus L.) field-grown plants of cv. 7042S shown unusual water-soaked lesions on leaf tips spreading towards the leaf base from Manasagangothri region (12. Read More

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Resolving species boundaries in a recent radiation with the Angiosperms353 probe set: the Lomatium packardiae/L. anomalum clade of the L. triternatum (Apiaceae) complex.

Am J Bot 2021 Jun 8. Epub 2021 Jun 8.

Department of Biological Sciences, Boise State University, Boise, ID, 83725, USA.

Premise: Speciation not associated with morphological shifts is challenging to detect unless molecular data are employed. Using Sanger-sequencing approaches, the Lomatium packardiae/L. anomalum subcomplex within the larger Lomatium triternatum complex could not be resolved. Read More

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The effects of increased exposure time to UV-B radiation on germination and seedling development of Anatolian black pine seeds.

Environ Monit Assess 2021 Jun 7;193(7):388. Epub 2021 Jun 7.

Department of Forest Engineering, Institute of Graduate School, Bartin University, Bartin, Turkey.

Exhaustion of stratospheric ozone found at a height of 10-30 km around the world causes the solar UV-B (280-320 nm) radiation to penetrate through the atmosphere more, and thus to reach the Earth's surface quicker. The protective ozone layer gets damaged by human activities constantly, and the increasing levels of UV radiation present threats to all life forms, plants, animals, and even microorganisms. However, the studies conducted on the effects of UV radiation on plants, and especially forest trees, are rather limited. Read More

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Morpho-anatomical variability, principal component analysis and Euclidean clustering of tossa jute ( L.).

Heliyon 2021 May 25;7(5):e07042. Epub 2021 May 25.

Breeding Division, Bangladesh Jute Research Institute, Ministry of Agriculture, Manik Mia Avenue, Dhaka-1207, Bangladesh.

Jute, the second most important natural fibre crop after cotton in the world. Bangladesh occupied the first position for jute fibre production and exportation after India among south-east Asian countries. Tossa jute is cultivated more (80-85%) here among the commercial cultivation of jute and allied fibre crops. Read More

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Divergence time and species delimitation of microbivalves in the Southern Ocean: the case of species.

Polar Biol 2021 Jun 1:1-13. Epub 2021 Jun 1.

Centro FONDAP- IDEAL, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile.

The systematics of Subantarctic and Antarctic near-shore marine benthic invertebrates requires major revision and highlights the necessity to incorporate additional sources of information in the specimen identification chart in the Southern Ocean (SO). In this study, we aim to improve our understanding of the biodiversity of (Dall 1876) through molecular and morphological comparisons of Antarctic and Subantarctic taxa. The microbivalves of the genus are small brooding organisms that inhabit intertidal and shallow subtidal rocky ecosystems. Read More

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Morphology and molecular phylogeny of a new brackish pleurostomatid ciliate, Loxophyllum paludosum sp. n. (Ciliophora, Litostomatea, Haptoria), from a mangrove wetland in China.

Eur J Protistol 2021 May 8;80:125802. Epub 2021 May 8.

Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Healthy and Safe Aquaculture, School of Life Sciences, South China Normal University, Guangzhou 510631, Guangdong, China. Electronic address:

A new ciliate species of the genus Loxophyllum Dujardin, 1841, Loxophyllum paludosum sp. n., is described from a mangrove wetland near Daya Bay in Guangdong Province, southern China, based on morphological and molecular analyses. Read More

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The role of metalinguistic awareness and character properties in early Chinese reading.

J Exp Child Psychol 2021 Jun 1;210:105185. Epub 2021 Jun 1.

Department of Psychology, The Education University of Hong Kong, Tai Po, New Territories, Hong Kong. Electronic address:

In this study, we examined the effects of phonological awareness (PA), morphological awareness (MA), two character properties (family size [i.e., the number of words that contain the character] and frequency), and the interactions between the metalinguistic awareness (i. Read More

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DESCRIPTION AND PHYLOGENETIC POSITION OF A NEW SPECIES OF HERPETODIPLOSTOMUM FROM PHRYNOPS GEOFFROANUS IN BRAZIL AND A REEVALUATION OF CHELONIODIPLOSTOMUM.

J Parasitol 2021 May;107(3):455-462

Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202.

As presently recognized, Herpetodiplostomum is a small genus of proterodiplostomid digeneans parasitic in crocodilians. Most members of Cheloniodiplostomum, a genus of proterodiplostomids that parasitize chelonians, were originally placed within Herpetodiplostomum. The 2 genera were distinguished based on the presence/absence of papillae on the holdfast organ and anterior extent of vitellarium. Read More

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n. sp. (Tylenchomorpha: Aphelenchoididae) from South Africa, a morphological and molecular phylogenetic study, with an update to the diagnostics of the genus.

J Nematol 2021 21;53. Epub 2021 May 21.

Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.

A newly recovered population of the genus from a dead maritime pine wood sample in Potchefstroom, South Africa, representing a new species, named n. sp., is herein described and illustrated based on morphological and molecular data. Read More

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First Report of Neofusicoccum parvum Associated with Chestnut Nut Rot in Italy.

Plant Dis 2021 Jun 2. Epub 2021 Jun 2.

Università di Padova, Dipartimento Territorio e Sistemi Agro-Forestali TESAF, Viale dell'Università, 16, Legnaro (PD), Italy, 35020;

In autumn 2018, during a study on the pathogens involved in the etiology of chestnut nut rot symptoms observed in three of the main sweet chestnut (Castanea sativa) growing areas in Sardinia (Site 1: 39°56'55"N/09°11'45"E; site 2: 39°58'20"N/09°09'41"E; site 3: 40°52'50"N/09°08'45"E), Gnomoniopsis smithogilvyi was found to be the main causal agent. In addition to G. smithogilvyi, 15 out of 450 nuts processed, yielded on potato dextrose agar (PDA, 39 g/L) at 22°C white colonies with dense aerial mycelium becoming dark grey after 4 to 7 days. Read More

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Occurrence of the louse fly Ornithoctona erythrocephala Leach (1817) (Diptera: Hippoboscidae) on a free-living red-legged seriema (Cariama cristata).

Rev Bras Parasitol Vet 2021 28;30(2):e025520. Epub 2021 May 28.

Laboratório de Imunoparasitologia, Departamento de Patologia, Reprodução e Saúde Única, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista - UNESP, Jaboticabal, SP, Brasil.

The aim of this study was to report, for the first time, the occurrence of the hippoboscid fly Ornithoctona erythrocephala on a red-legged seriema (Cariama cristata). A Diptera specimen was found among the feathers of a free-living red-legged seriema, which was referred to necropsy at the Wild Animal Pathology Service, UNESP Jaboticabal. The fly was collected, stored in absolute alcohol, and shipped to the Institute of Biosciences of the Federal University of Mato Grosso do Sul for proper identification. Read More

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On the Affinities and Systematic Position of Schoenherr and Germar in the Tribe Lixini (Coleoptera: Curculionidae: Lixinae) Based on the Morphological Characters of the Immature Stages.

Insects 2021 May 24;12(6). Epub 2021 May 24.

Administration of Podyji National Park, Na Vyhlídce 5, CZ-669 02 Znojmo, Czech Republic.

Mature larvae and pupae of Schoenherr, 1826 and Gültekin, Diotti and Caldara, 2019 and pupae of (Frölich, 1792), belonging to the Lixini (Curculionidae: Lixinae), are morphologically described for the first time. They possess all the characters considered distinctive in the immature stages of this tribe and are distinguishable from all the related genera by a combination of some characters (e.g. Read More

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Mitochondrial Phylogenomics of Tenthredinidae (Hymenoptera: Tenthredinoidea) Supports the Monophyly of Megabelesesinae as a Subfamily.

Insects 2021 May 26;12(6). Epub 2021 May 26.

College of Life Sciences, Jiangxi Normal University, Nanchang 330022, China.

Tenthredinidae represents one of the external feeders of the most diverse superfamily, Tenthredinoidea, with diverse host plant utilization. In this study, four complete mitochondrial genomes (mitogenomes), those of , , , and , are newly sequenced and comparatively analyzed with previously reported tenthredinid mitogenomes. The close investigation of mitogenomes and the phylogeny of Tenthredinidae leads us to the following conclusions: The subfamilial relationships and phylogenetic placements within Tenthredinidae are mostly found to be similar to the previously suggested phylogenies. Read More

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Entangling the Enemy: Ecological, Systematic, and Medical Implications of Dermestid Beetle Hastisetae.

Insects 2021 May 12;12(5). Epub 2021 May 12.

Department of Agronomy, Food, Natural Resources, Animals and the Environment (DAFNAE), University of Padova, Viale dell'Università 16, Legnaro, I-35020 Padova, Italy.

Hastisetae are modified setae typical of Dermestidae Megatominae and are a primary defensive tool of both larvae and pupae against invertebrates and possibly vertebrates. Given their unique morphological features, hastisetae have recently been suggested as an additional character useful for larvae identification and possible source of information to clarify the systematics of Megatominae. Hastisetae are also recognized as important contaminants of stored products, work and living environment; in particular, the exposure to hastisetae seems to cause allergic reactions and the insurgence of skin rashes, asthma, conjunctivitis, and digestive system inflammation in humans. Read More

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First report of leaf spot caused by on in China.

Plant Dis 2021 May 31. Epub 2021 May 31.

Nanjing Forestry University, 74584, College of Forestry, No. 159 Longpan Road, Nanjing, Jiangsu, China, 210037;

Salix matsudana Koidz. (Chinese willow) is an important landscaping tree species widely grown in China (Zhang et al. 2017). Read More

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Osteology, relationships and functional morphology of (Diapsida, Weigeltisauridae) based on a complete skeleton from the Upper Permian Kupferschiefer of Germany.

PeerJ 2021 20;9:e11413. Epub 2021 May 20.

Department of Biology, University of Toronto Mississauga, Mississauga, Ontario, Canada.

Background: Weigeltisauridae is a clade of small-bodied diapsids characterized by a horned cranial frill, slender trunk and limbs, and a patagium supported by elongated bony rods. Partial skeletons and fragments are definitively known only from upper Permian (Lopingian) rocks in England, Germany, Madagascar and Russia. Despite these discoveries, there have been few detailed descriptions of weigeltisaurid skeletons, and the homologies of many skeletal elements-especially the rods supporting the patagium-remain the subject of controversy. Read More

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Homology of process: developmental dynamics in comparative biology.

Interface Focus 2021 Jun 16;11(3):20210007. Epub 2021 Apr 16.

Complexity Science Hub (CSH) Vienna, Josefstädter Strasse 39, 1080 Vienna, Austria.

Comparative biology builds up systematic knowledge of the diversity of life, across evolutionary lineages and levels of organization, starting with evidence from a sparse sample of model organisms. In developmental biology, a key obstacle to the growth of comparative approaches is that the concept of homology is not very well defined for levels of organization that are intermediate between individual genes and morphological characters. In this paper, we investigate what it means for ontogenetic processes to be homologous, focusing specifically on the examples of insect segmentation and vertebrate somitogenesis. Read More

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Three new species of the primitively segmented spider genus (Araneae, Mesothelae) from Guizhou Province, China.

Zookeys 2021 13;1037:57-71. Epub 2021 May 13.

College of Life Sciences, Hunan Normal University, Changsha 410081, Hunan Province, China Hunan Normal Unviersity Changsha China.

We diagnose and describe three new species of the primitively segmented spider genus from Guizhou Province, China, based on morphological characters and molecular data: (♂♀), (♂♀), and (♂♀). We provide the genetic distances within and among the three new species based on the DNA barcode gene, cytochrome c oxidase subunit I (COI) to support our descriptions. We also provide the COI GenBank accession codes for the three new species for future identification. Read More

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Integrative taxonomy resolves species identities within the Macrobiotus pallarii complex (Eutardigrada: Macrobiotidae).

Zoological Lett 2021 May 27;7(1). Epub 2021 May 27.

Department of Invertebrate Evolution, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, 30-387, Kraków, Poland.

The taxonomy of many groups of meiofauna is challenging due to their low number of diagnostic morphological characters and their small body size. Therefore, with the advent of molecular techniques that provide a new source of traits, many cryptic species have started to be discovered. Tardigrades are not an exception, and many once thought to be cosmopolitan taxa are being found to be complexes of phenotypically similar species. Read More

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DNA barcoding of Austrian snow scorpionflies (Mecoptera, Boreidae) reveals potential cryptic diversity in .

PeerJ 2021 14;9:e11424. Epub 2021 May 14.

Institute of Biology, University of Graz, Graz, Styria, Austria.

Background: Snow scorpionflies (genus ) belong to a family of Mecoptera, Boreidae, that has been vastly neglected by entomological researchers due to their shift in seasonality to the winter months. Their activity during this time is regarded as a strategy for predator avoidance and regular sightings on snow fields suggest that this also facilitates dispersal. However, many aspects about snow scorpionflies, especially systematics, taxonomy, distribution of species, phylogenetics and phylogeography have remained fairly unexplored until today. Read More

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Taxonomic revision of Baill. (Bignonieae, Bignoniaceae).

PhytoKeys 2021 13;177:77-116. Epub 2021 May 13.

Laboratório de Sistemática Vegetal, Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, 05508-090, São Paulo, SP, Brazil Universidade de São Paulo São Paulo Brazil.

Baill. is a genus of Neotropical lianas in tribe Bignonieae (Bignoniaceae). The genus is monophyletic and well supported by morphological and molecular characters. Read More

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First record of Eaton, 1881 (Ephemeroptera, Heptageniidae) from Thailand with description of a new species.

Zookeys 2021 10;1036:153-170. Epub 2021 May 10.

Animal Systematics and Ecology Speciality Research Unit (ASESRU), Department of Zoology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand Kasetsart University Bangkok Thailand.

A new species of Heptageniidae, , is described based on larvae, subimagos, eggs, and COI data. The mayfly genus Eaton, 1881 is reported for the first time from Thailand. The larva of the new species can be distinguished from other known species by i) lamellae of gill I ca 1/4 of fibrilliform portion and ii) mandibles and basal segment of maxillary palp without dense setae on margin. Read More

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Two new Nothophytophthora species from streams in Ireland and Northern Ireland: Nothophytophthora irlandica and N. lirii sp. nov.

PLoS One 2021 26;16(5):e0250527. Epub 2021 May 26.

Faculty of Forestry and Wood Technology, Mendel University in Brno, Phytophthora Research Centre, Brno, Czech Republic.

Slow growing oomycete isolates with morphological resemblance to Phytophthora were obtained from forest streams during routine monitoring for the EU quarantine forest pathogen Phytophthora ramorum in Ireland and Northern Ireland. Internal Transcribed Spacer (ITS) sequence analysis indicated that they belonged to two previously unknown species of Nothophytophthora, a recently erected sister genus of Phytophthora. Morphological and temperature-growth studies were carried out to characterise both new species. Read More

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A historical and ethnobotanical study on local botanical knowledge recorded in the book "Mongolia and Amdo and the Dead City of Khara-Khoto".

J Ethnobiol Ethnomed 2021 May 25;17(1):36. Epub 2021 May 25.

Institute for the History of Science and Technology, Inner Mongolia Normal University, Hohhot, 010022, China.

Background: There is a plentiful amount of local knowledge on plants hidden in the literature of foreign exploration to China in modern history. Mongolia and Amdo and the Dead City of Khara-Khoto (MAKK) is an expedition record on the sixth scientific expedition to northwestern China (1907-1909) initiated by P. K. Read More

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Taxon sampling and alternative hypotheses of relationships in the euphyllophyte plexus that gave rise to seed plants: insights from an Early Devonian radiatopsid.

New Phytol 2021 May 25. Epub 2021 May 25.

Department of Biological Sciences, Humboldt State University, Arcata, California, 95521, USA.

An abrupt transition in the fossil record separates Early Devonian euphyllophytes with simple structure from a broad diversity of structurally-complex Middle-Late Devonian plants. Morphological evolution and phylogeny across this transition are poorly understood due to incomplete sampling of the fossil record. We document a new Early Devonian radiatopsid and integrate it in analyses addressing euphyllophyte relationships. Read More

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Dated phylogeny and ancestral range estimation of sand scorpions (Buthidae: Buthacus) reveal Early Miocene divergence across land bridges connecting Africa and Asia.

Mol Phylogenet Evol 2021 May 21:107212. Epub 2021 May 21.

Department of Biology and Environment, Faculty of Natural Sciences, University of Haifa - Oranim, Israel. Electronic address:

Sand scorpions of the genus Buthacus Birula, 1908 (Buthidae C.L. Koch, 1837) are widespread in the sandy deserts of the Palearctic region, occurring from the Atlantic coast of West Africa across the Sahara, and throughout the Middle East to Central Asia. Read More

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