scholarly journals First molecular identification of wheat seed gall nematode Anguina tritici races parasitized on wheat in Iraq

2019 ◽  
Vol 11 (1) ◽  
pp. 5-15
Author(s):  
Sulaiman Naif Ami ◽  
Ibrahim Esa Taher ◽  
Fenik Sherzad Hussen ◽  
Ayoub Ibrahim Ahmed
Keyword(s):  
Molecular Identification ◽  
Internal Transcribed Spacer ◽  
Its Region ◽  
Nematode Species ◽  
Agarose Gel ◽  
Wheat Cultivars ◽  
Wheat Seed ◽  
Kurdistan Region ◽  
Two Cities ◽  
Template Dna

Abstract This study was conducted to identify races of wheat seed gall nematode Anguina tritici by using molecular identification for this nematode species parasitized on durum and bread wheat cultivars. Wheat seed galls of both cultivars were collected from two cities, Erbil and Duhok, from the Kurdistan Region and Iraq respectively. DNA was extracted from both nematode isolates (populations), and then PCR reactions were performed with Internal Transcribed Spacer (ITS) region using primers TW81/AB28 with 2 µl of template DNA of A. tritici for both nematode isolates on both wheat cultivars. The bands of both amplification products of PCR reactions were visualized in position about 800 bp on agarose gel, which indicates that both isolates of A. tritici belong to the same race. On the other hand, no nucleotide differences were observed between the two nematode isolations, as revealed by the sequence alignment of DNA of the internal transcribed spacer (ITS) region and phylogenetic tree, which emphasizes at the same time that both nematode isolates are of the same genetic structure or have the same identity and confirms their belonging to the same nematode race.

scholarly journals WildTermitomycesSpecies Collected from Ondo and Ekiti States Are More Related to African Species as Revealed by ITS Region of rDNA

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Victor Olusegun Oyetayo
Keyword(s):  
Sequence Analysis ◽  
Phylogenetic Tree ◽  
Molecular Identification ◽  
Internal Transcribed Spacer ◽  
Its Region ◽  
Its Sequence ◽  
African Countries ◽  
African Species ◽  
Its Sequence Analysis ◽  
Degree Of Similarity

Molecular identification of eighteenTermitomycesspecies collected from two states, Ondo and Ekiti in Nigeria was carried out using the internal transcribed spacer (ITS) region. The amplicons obtained from rDNA ofTermitomycesspecies were compared with existing sequences in the NCBI GenBank. The results of the ITS sequence analysis discriminated between all theTermitomycesspecies (obtained from Ondo and Ekiti States) andTermitomycessp. sequences obtained from NCBI GenBank. The degree of similarity of T1 to T18 to gene ofTermitomycessp. obtained from NCBI ranges between 82 and 99 percent.Termitomycesspecies from Garbon with ascension number AF321374 was the closest relative of T1 to T18 except T12 that has T. eurhizus and T. striatus as the closet relative. Phylogenetic tree generated with ITS sequences obtained from NCBI GenBank data revealed that T1 to T18 are more related toTermitomycesspecies indigenous to African countries such as Senegal, Congo, and Gabon.

Molecular identification of mycorrhizal fungi in Dactylorhiza sambucina (Orchidaceae)

Biologia ◽  
2009 ◽  
Vol 64 (5) ◽  
Author(s):  
Giuseppe Pellegrino ◽  
Francesca Bellusci
Keyword(s):  
Molecular Identification ◽  
Mycorrhizal Fungi ◽  
Internal Transcribed Spacer ◽  
Its Region ◽  
Colour Polymorphism ◽  
Dactylorhiza Sambucina ◽  
Ribosomal Repeat ◽  
First Time ◽  
Sequence Types

AbstractWe amplified and sequenced internal transcribed spacer (ITS) region of the nuclear ribosomal repeat from fungi in roots of Dactylorhiza sambucina (Orchidaceae) and used the extended database to identify the mycorrhizal fungi. We molecularly identified three ITS recovered from D. sambucina roots, one belonging to Rhizoctonia group, and two to ascomycetes, for the first time in Orchidoidae. In many cases, two sequence types were found from the same orchid root, providing that two taxa may be involved in mycorrhizal formation (multiple mycobiont colonization). Moreover, we demonstrated that D. sambucina plants, irrespective of their colour polymorphism, possess roots containing several fungi belonging to both asco- and basidiomycetes.

scholarly journals Molecular Identification of Fusarium Spp. Isolated From Wheat Based on Sequencing of Internal Transcribed Spacer (ITS) Region

2020 ◽  
Author(s):  
Deyana Gencheva ◽  
Georgi Beev
Keyword(s):  
Molecular Identification ◽  
Internal Transcribed Spacer ◽  
Its Region ◽  
Genetic Distances ◽  
Accurate Information ◽  
Its Sequencing ◽  
Fusarium Spp ◽  
Internal Transcribed Spacer Region ◽  
Genome Region ◽  
Rdna Its

Molecular identification via Internal Transcribed Spacer region (nrDNA-ITS) sequencing of Fusarium spp. isolates from wheat originated from Stara Zagora region, were performed for the first time in Bulgaria. А total of 60 wheat samples (Triticum aestivum) were morphologically identified at the genus level as Fusarium spp. in advance. The rDNA-ITS region of all isolates was successfully amplified and the PCR products obtained were directly sequenced. After a comparison of detected sequences with NCBI database, members of three different fungal genera (Fusarium, Chaetomium, and Alternaria) were identified. Among Fusarium isolates, the F. tricinctum was prevailing, followed by F. poae. A total of three isolate F. proliferatum, F. graminearum and F. equiseti were presented with a single probe. The lowest genetic distance (0.004) was detected between F. tricinctum isolates. On the base of genetic distances, fungal isolates were grouped in two main clusters – one comprising F. tricinctum isolates and F. proliferatum, and second including F. equiseti, F. graminearum and F. poae. It could be concluded that the rDNA-ITS genome region of the genus Fusarium may be used as a suitable marker of early detection, accurate and reliable identification of Fusarium spp. contamination of wheat. The timely and accurate information would assist in the selection of appropriate approaches for control of fusarium infections and possible mycotoxins contamination of agricultural production.

scholarly journals Morphological and molecular identification of four new resupinate species of Lyomyces (Hymenochaetales) from southern China

MycoKeys ◽  
2020 ◽  
Vol 65 ◽  
pp. 101-118
Author(s):  
Jun-Zhu Chen ◽  
Chang-Lin Zhao
Keyword(s):  
New Species ◽  
Molecular Identification ◽  
Internal Transcribed Spacer ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Its Region ◽  
Molecular Data ◽  
Fungal Species ◽  
Molecular Evidence ◽  
Thin Walled

Four new wood-inhabiting fungal species, Lyomyces bambusinus, L. cremeus, L. macrosporus and L. wuliangshanensis, are proposed based on a combination of morphological and molecular evidence. Lyomyces bambusinus is characterized by resupinate basidiomata with colliculose to tuberculate hymenial surface and broadly ellipsoid, hyaline, slightly thick-walled, smooth basidiospores. Lyomyces cremeus is characterised by resupinate basidiomata with smooth, cream hymenial surface and ellipsoid, hyaline, thin-walled to slightly thick-walled basidiospores. Lyomyces macrosporus is characterized by pruinose basidiomata with reticulate hymenial surface, presence of three kinds of cystidia and larger basidiospores (6.7–8.9 × 4.4–5.4 µm). Lyomyces wuliangshanensis is characterized by coriaceous basidiomata and ellipsoid, hyaline, slightly thick-walled, smooth basidiospores. The phylogenetic analyses based on molecular data of the internal transcribed spacer (ITS) region sequences revealed that the four new species belonged to Lyomyces. Lyomyces bambusinus grouped with L. sambuci. Lyomyces cremeus clade was sister to a clade comprised of L. microfasciculatus. Lyomyces macrosporus was sister to L. allantosporus. Lyomyces wuliangshanensis was closely related to L. mascarensis.

Molecular detection of Murshidia linstowi in a free-ranging dead elephant calf

2020 ◽  
Vol 12 (3) ◽  
pp. 15359-15363
Author(s):  
Sourabh Ranjan Hota ◽  
Sonali Sahoo ◽  
Manojita Dash ◽  
Avishek Pahari ◽  
Bijayendranath Mohanty ◽  
...  
Keyword(s):  
Average Length ◽  
Its Region ◽  
Buccal Capsule ◽  
Nematode Species ◽  
Phylogenetic Study ◽  
Gastrointestinal Helminths ◽  
Pcr Product ◽  
Maximum Similarity ◽  
Host Parasite ◽  
Free Ranging

Gastrointestinal helminths are ubiquitous in both domestic and wild animals. Infections are often sub-clinical except in circumstances of destabilization of host-parasite equilibrium by innate or environmental factors. The present case deals with microscopic and molecular diagnosis of Murshidia linstowi recovered from an elephant. A post-mortem examination of a free-ranging juvenile male elephant calf that had died of electrocution in Athagarh Wildlife Division revealed the presence of slender, whitish nematodes in the stomach. No gross lesions were noticed either in the site of predilection or any other internal organs. The average length of the parasites was 3.8cm.  These parasites were collected for further gross as well as microscopic examination following routine parasitological techniques. Temporary mounts prepared after cleaning the nematodes in lactophenol were observed under a microscope. Morphological features such as a well-developed mouth collar, large and globular buccal capsule with fine tubercles, cone shaped oesophageal funnel, short bursa having indistinctly divided lobes and closely apposed ventral rays and stout spicules with club shaped tips bent dorsally corroborated with that of M.linstowi (male). Amplification of the rDNA from the internal transcribed spacer (ITS) region using universal nematode primers NC2 and NC5 revealed a product size of 870bp. The PCR product was subjected to sequencing followed by NCBI-BLAST which revealed 98% homology with M. linstowi. A phylogenetic study showed a maximum similarity with M.linstowi recovered from elephants in Kenya. This particular nematode species belonging to the family Strongylidae and sub-family Cyathostominae appears to be the first documented report in India.

Chestnuts in Charters

2018 ◽  
Author(s):  
Ross Balzaretti
Keyword(s):  
Comparative Method ◽  
Its Region ◽  
Medieval Period ◽  
Social Differences ◽  
Early Medieval Period ◽  
Specialized Production ◽  
System P ◽  
Macro Scale ◽  
Two Cities ◽  
Economic Specialization

This chapter responds to a point which Chris Wickham raised in his recent review of my book on Dark Age Liguria: did chestnut cultivation show any economic specialization in this region in the early medieval period? Chestnuts figured a great deal in that book, which drew briefly on the surviving charter documentation for the region. In this chapter a more detailed analysis of charters from the tenth and eleventh centuries develops an answer to the question of specialized production with a comparative study in which the Genoese evidence is set alongside similar charter evidence from Milan and its region, where chestnuts were also cultivated for food. The Genoa–Milan comparison puts into practice Wickham’s advocacy of comparative method at the micro as well as at the macro scale, for regions where comparison has not historically been the norm. The comparison suggests that chestnuts were more important to the Genoese than the Milanese economy, in part for local climatic reasons but also, perhaps, because of fundamental political and social differences between these two cities. It will be shown that some charters show that the production of chestnuts was to some degree specialized, how it was specialized and what the consequences of that specialization were for each economic system.

Infundibulicybe rufa sp. nov. (Tricholomataceae), a reddish brown species from southwestern China

Phytotaxa ◽  
2016 ◽  
Vol 266 (2) ◽  
pp. 134 ◽  
Author(s):  
QI ZHAO ◽  
YAN-JIA HAO ◽  
JIAN-KUI LIU ◽  
KEVIN D. HYDE ◽  
YANG-YANG CUI ◽  
...  
Keyword(s):  
Internal Transcribed Spacer ◽  
Phylogenetic Analyses ◽  
Biosphere Reserve ◽  
Its Region ◽  
Southwestern China ◽  
New Taxon ◽  
Line Drawings ◽  
Phylogenetic Placement ◽  
Molecular Phylogenetic ◽  
Pileus Surface

Infundibulicybe rufa sp. nov., is described from Jiuzhaigou Biosphere Reserve, southwestern China. It is characterized by the combination of the following characters: umbilicate to slightly infundibuliform, reddish brown pileus; decurrent, cream lamellae; cylindrical stipe concolorous with the pileus surface. Molecular phylogenetic analyses using the nuclear ribosomal internal transcribed spacer (ITS) region indicates that I. rufa is closely related to I. mediterranea and I. bresadolana. A description, line drawings, phylogenetic placement and comparison with allied taxa for the new taxon are presented.

scholarly journals Molecular identification of poisonous mushrooms using nuclear ITS region and peptide toxins: a retrospective study on fatal cases in Thailand

2016 ◽  
Vol 41 (1) ◽  
pp. 65-76 ◽  
Author(s):  
Sittiporn Parnmen ◽  
Sujitra Sikaphan ◽  
Siriwan Leudang ◽  
Thitiya Boonpratuang ◽  
Achariya Rangsiruji ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Molecular Identification ◽  
Its Region ◽  
Nuclear Its ◽  
Peptide Toxins ◽  
Poisonous Mushrooms

Higher-level relationships among the eucalypts are resolved by ITS-sequence data

2002 ◽  
Vol 15 (1) ◽  
pp. 49 ◽  
Author(s):  
Dorothy A. Steane ◽  
Dean Nicolle ◽  
Gay E. McKinnon ◽  
René E. Vaillancourt ◽  
Brad M. Potts
Keyword(s):  
Internal Transcribed Spacer ◽  
Sequence Data ◽  
Its Region ◽  
Molecular Data ◽  
Nuclear Ribosomal Dna ◽  
Its Sequence ◽  
Phylogenetic Groups ◽  
Single Section ◽  
Western Australian ◽  
Genus Eucalyptus

This expanded survey of ITS sequences represents the largest analysis of molecular data ever attempted on Eucalyptus. Sequences of the internal transcribed spacer (ITS) region of the nuclear ribosomal DNA were included in an analysis of 90 species of Eucalyptus s.s. and 28 species representing eight other genera (Allosyncarpia, Angophora, Arillastrum, Corymbia, Eucalyptopsis, Stockwellia, Lophostemon and Metrosideros). The results of the study indicate that Angophora and Corymbia form a well-supported clade that is highly differentiated from Eucalyptus s.s. Corymbia species are divided between two clades, one of which may be the sister to Angophora. Allosyncarpia, Arillastrum, Eucalyptopsis and ‘Stockwellia’ are also highly differentiated from Eucalyptus s.s. If the genus Eucalyptus is to be expanded to include Angophora and Corymbia(sensu Brooker 2000), ITS data suggest that Allosyncarpia, Eucalyptopsis, ‘Stockwellia’ and potentially Arillastrum should also be included in Eucalyptus s.l. The ITS data suggest that subg. Symphyomyrtus is paraphyletic and that subg. Minutifructus should be included within it. Within subg.Symphyomyrtus, only sect. Maidenaria appears to be monophyletic. Sections Adnataria and Dumaria are probably monophyletic; sections Exsertaria and Latoangulatae are very close and probably should be combined in a single section. Section Bisectae is polyphyletic and is divided into two distinct lineages. The phylogenetic groups depicted by ITS data are consistent with the frequency of natural inter-specific hybridisations as well as data from controlled crosses within subgenus Symphyomyrtus. The ITS data illustrate that subg. Idiogenes and western Australian monocalypts are early evolutionary lines relative to E. diversifolia, E. rubiginosa (monotypic subg. Primitiva) and the eastern monocalypts and that subg. Primitiva should be sunk into subg. Eucalyptus. Subgenus Eudesmia may be monophyletic, grouping with subgenera Idiogenes and Eucalyptus. Further work is required to confirm the phylogenetic positions of the monotypic subgenera Alveolata, Cruciformes, Acerosae and Cuboidea.

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