scholarly journals Short Communication: Genetic diversity among Fusarium isolates from cereals in Iran assessed using RAPD marker

2018 ◽  
Vol 20 (1) ◽  
pp. 292-296
Author(s):  
SARA SIAHPOUSH ◽  
MOSTAFA DARVISHNIA
Keyword(s):  
Genetic Diversity ◽  
Short Communication ◽  
Random Amplified Polymorphic Dna ◽  
Fusarium Species ◽  
Rapd Marker ◽  
Elongation Factor ◽  
Economic Losses ◽  
Accurate Identification ◽  
Translation Elongation ◽  
Elongation Factor 1 Alpha

Siahpoush S, Darvishnia M. 2019. Short Communication: Genetic diversity among Fusarium isolates from cereals in Iran assessed using RAPD marker. Biodiversitas 20: 292-296. Fusarium species cause important disease on many crops including cereals, and accurate identification and then proper management of this disease will be helpful to reduce economic losses. In this paper, 13 Fusarium isolates from root and crown of cereals in western Iran were identified by morphological and molecular methods. Sequencing of translation elongation factor 1-alpha revealed 8 species as follows: Fusarium acuminatum, F. avenaceum, F. culmorum, F. equiseti, F. proliferatum, F. reticulatum, F. solani, and F. tricinctum. Species diversity was analyzed by random amplified polymorphic DNA (RAPD). Four primers were used as Rfu9, Rfu10, Rfu23, and Rfu25 which all of them produced distinct and reproducible bands. A dendrogram was developed by UPGMA. Generated polymorphic bands were observed in all 13 different species by 4 primers. Rfu9 by 13 bands and Rfu23 by 10 ones, produced the most and the least bands respectively. Genetic similarity coefficient was between 0.00-0.9. RAPD analysis showed that these isolates were genetically varied and two clusters were formed with Fusarium isolates.

scholarly journals Genetic Diversity of Toxigenic Fusarium Verticillioidesassociated with Maize Grains in India

2021 ◽  
Author(s):  
Vishwambar Navale ◽  
KoteswaraRao Vankudoth
Keyword(s):  
Genetic Diversity ◽  
Fusarium Verticillioides ◽  
Elongation Factor ◽  
Translation Elongation ◽  
H Index ◽  
Inter Simple Sequence Repeats ◽  
Wide Range ◽  
Elongation Factor 1 Alpha ◽  
Simple Sequence

Abstract Genetic diversity of Fusarium species associated with maize grains were analyzed from ten states of India. Fusarium verticillioides (88.52%), F. coffeatum (6.55%), F. foetens (3.27%) and F. euwallaceae (1.63%) were recovered from the maize samples. A phylogenetic analysis was performed based on the translation elongation factor 1 alpha (TEF1-α) gene sequence formed five evolutionary lineages (EL) that showed both inter- and intra-species variability. A In-vitro pathogenicity study confirms that among the 61 strains, 51% exhibited high to moderate virulence to the maize, and produced one or more mycotoxins. The genetic diversity of F. verticillioides were evaluated using Inter simple sequence repeats (ISSR) fingerprints. The ISSR fingerprints (AG)8C and (AG)8G shown 252 and 368 microsatellites sites, respectively, in the genome of F. verticillioides. The (AG)8C fingerprints differentiated the pathogenic and non-pathogenic clustering of F. verticillioides. However, Simpson’s (SID), and Shannon’s (H) index showed a wide range of diversity within the F. verticillioides. The pleomorphic nature of these strains role in host pathogen interactions and adoptive potential to develop disease to crop plants. Toxigenic potential of F. verticillioides was evaluated for the presence of FUM1and FUM13 genes involved in fumonisins B1 (FB1) biosynthesis, and further confirmed by liquid chromatography with tandem mass spectrometry (LC-MS/MS) showed 91% strains were FB1 producers. The current finding demonstrated that most F. vertcillioides strains showed a wide range of genetic diversity with varied toxigenic and pathogenic potentials. Thus, there is an urgent need to develop an effective resistant breeding program in maize, and further monitoring is necessary for the post-harvest losses of grains.

scholarly journals Original Article. Geographic distribution of Fusarium culmorum chemotypes associated with wheat crown rot in Iraq

2016 ◽  
Vol 57 (1) ◽  
pp. 43-49 ◽  
Author(s):  
Oadi N. Matny ◽  
Scott T Bates ◽  
Zewei Song
Keyword(s):  
Crop Production ◽  
Fusarium Species ◽  
Marker Gene ◽  
Fusarium Culmorum ◽  
Elongation Factor ◽  
Crown Rot ◽  
Translation Elongation ◽  
Fusarium Crown Rot ◽  
Elongation Factor 1 Alpha ◽  
Important Disease

Abstract Fusarium crown rot (FCR) is an important disease of wheat and other grains that has had a significant impact on cereal crop production worldwide. Fusarium species associated with FCR can also produce powerful trichothecenes mycotoxins that pose a considerable health risk to humans and animals that consume infected grains. In this study we examined Fusarium species of wheat from different regions of Iraq that showed FCR symptoms. Twenty-nine isolates were collected overall, and the marker gene translation elongation factor 1 alpha (TEF-1α) was sequenced in order to determine their taxonomic identities. All isolates were determined to be F. culmorum, and primers targeting tri-cluster genes were used in order to further characterize isolates into specific trichothecene chemotype strains. Five of the 29 isolates were determined to be the nivalenol (NIV) chemotype, while the rest of the isolates recovered were the deoxynivalenol (DON) chemotype. All DON-type isolates produced 3Ac-DON, while the 15Ac-DON-type was not detected. The majority of the NIV-type isolates originated from wheat growing regions in the mid-latitudes of Iraq, while the DON-type isolates were recovered from areas distributed broadly across the country. To the best of our knowledge, this study is the first to report on the distribution of specific F. culmorum chemotypes from FCR diseased wheat in Iraq.

FUSARIUM-ID v.3.0: An updated, downloadable resource for Fusarium species identification

Plant Disease ◽  
2021 ◽  
Author(s):  
Terry Torres-Cruz ◽  
Briana Whitaker ◽  
Robert Proctor ◽  
Kirk Broders ◽  
Imane Laraba ◽  
...  
Keyword(s):  
Sequence Data ◽  
Safety Concern ◽  
Fusarium Species ◽  
Elongation Factor ◽  
Sequence Database ◽  
Accurate Identification ◽  
Dna Sequence Data ◽  
Species Complexes ◽  
Marker Loci ◽  
Feed Safety

Species within Fusarium are of global agricultural, medical, and food/feed safety concern and have been extensively characterized. However, accurate identification of species is challenging and usually requires DNA sequence data. FUSARIUM-ID (http://isolate.fusariumdb.org/) is a publicly available database designed to support the identification of Fusarium species using sequences of multiple phylogenetically informative loci, especially the highly informative ~680 bp 5' portion of the translation elongation factor 1-alpha (TEF1) gene that has been adopted as the primary barcoding locus in the genus. However, FUSARIUM-ID v.1.0 and 2.0 had several limitations, including inconsistent metadata annotation for the archived sequences and poor representation of some species complexes and marker loci. Here, we present FUSARIUM-ID v.3.0, which provides the following improvements: (i) additional and updated annotation of metadata for isolates associated with each sequence, (ii) expanded taxon representation in the TEF1 sequence database, (iii) availability of the sequence database as a downloadable file to enable local BLAST queries, and (iv) a tutorial file for users to perform local BLAST searches using either freely-available software, such as SequenceServer, BLAST+ executable in the command line, and Galaxy, or the proprietary Geneious software. FUSARIUM-ID will be updated on a regular basis by archiving sequences of TEF1 and other loci from newly identified species and greater in-depth sampling of currently recognized species.

Amanita griseofusca: A new species of Amanita in section Vaginatae from Malam Jabba, Swat, Pakistan

Phytotaxa ◽  
2018 ◽  
Vol 364 (2) ◽  
pp. 181 ◽  
Author(s):  
MUNAZZA KIRAN ◽  
JUNAID KHAN ◽  
HASSAN SHER ◽  
DONALD H. PFISTER ◽  
ABDUL NASIR KHALID
Keyword(s):  
New Species ◽  
Elongation Factor ◽  
Molecular Data ◽  
Internal Transcribed Spacer Region ◽  
Translation Elongation ◽  
Elongation Factor 1 Alpha ◽  
Pileus Surface ◽  
Elongation Factor 1 ◽  
A New Species ◽  
Partial Translation

A new species, Amanita griseofusca in section Vaginatae is described and illustrated here from Pakistan. Distinguishing characters of the new species include medium-sized basidiomata, greyish brown pileus surface with white to beige, membranous volval remnants present as one (large) to a few (small) warts, close lamellae which are cream colored with a pink tone, striations one third of the total pileus radius, broadly ellipsoidal to ellipsoidal basidiospores and white loose saccate volva turning beige at maturity. Molecular data inferred from partial nuc rDNA internal transcribed spacer region (ITS), partial nuc rDNA larger subunit region (LSU) and partial translation elongation factor 1-alpha (tef1) confirms the novelty of the present taxon.

scholarly journals First report of Gibellulopsis nigrescens on peppermint in Germany

2021 ◽  
Author(s):  
Elias Alisaac ◽  
Monika Götz
Keyword(s):  
Verticillium Wilt ◽  
Elongation Factor ◽  
Economic Losses ◽  
Fungal Culture ◽  
Translation Elongation ◽  
First Report ◽  
Regular Control ◽  
Fungal Dna ◽  
Elongation Factor 1 ◽  
Important Medicinal Plant

AbstractPeppermint is an important medicinal plant, and it is known for its essential oils and phenolic acids. Verticillium wilt is a vascular disease resulted from several Verticillium spp. causing significant economic losses in peppermint cultivation. In this study, the fungus Gibellulopsis nigrescens (syn. Verticillium nigrescens) was isolated from symptomless peppermint plants during the regular control of Verticillium wilt on peppermint in Germany. A pure fungal culture was prepared, and fungal DNA was extracted. Ribosomal internal transcribed spacer (ITS), beta-tubulin (TUB), and translation elongation factor 1-α (TEF1-α) were amplified, sequenced, and deposited in the GenBank. These sequences are located within the Gibellulopsis nigrescens cluster. Koch’s postulate was fulfilled, and the fungus was re-isolated from the inoculated plants. Up to our knowledge, this is the first report of Gibellulopsis nigrescens on peppermint in Germany.

Spegazzinia camelliae sp. nov. (Didymosphaeriaceae, Pleosprales), a new endophytic fungus from northern Thailand

Phytotaxa ◽  
2021 ◽  
Vol 483 (2) ◽  
pp. 117-128
Author(s):  
NAKARIN SUWANNARACH ◽  
JATURONG KUMLA ◽  
SAISAMORN LUMYONG
Keyword(s):  
Phylogenetic Analyses ◽  
Large Subunit ◽  
Elongation Factor ◽  
Small Subunit ◽  
Internal Transcribed Spacers ◽  
Nuclear Ribosomal Dna ◽  
Full Description ◽  
Translation Elongation ◽  
Spine Length ◽  
Elongation Factor 1 Alpha

A new endophytic ascomycete, described herein as Spegazzinia camelliae, was isolated from leaves of Camellia sinensis var. assamica collected from Nan Province, Thailand. This species is characterized by basauxic conidiophores and dark brown to blackish brown α and β conidia. It can be distinguished from previously described Spegazzinia species by the spine length of the α conidia and the size of the β conidia. Multi-gene phylogenetic analyses of the small subunit (SSU), large subunit (LSU) and internal transcribed spacers (ITS) of the nuclear ribosomal DNA (rDNA) and the translation elongation factor 1-alpha (tef1) genes also support S. camelliae is a distinct new species within Spegazzinia. A full description, color photographs, illustrations and a phylogenetic tree showing the position of S. camelliae are provided.

Alternaria telliensis sp. nov., a new species isolated from Solanaceae in Algeria

Phytotaxa ◽  
2020 ◽  
Vol 440 (2) ◽  
pp. 89-100
Author(s):  
NABAHAT BESSADAT ◽  
BRUNO HAMON ◽  
NELLY BATAILLE-SIMONEAU ◽  
KIHAL MABROUK ◽  
PHILIPPE SIMONEAU
Keyword(s):  
New Species ◽  
Elongation Factor ◽  
Translation Elongation ◽  
Biodiversity Survey ◽  
Growing Seasons ◽  
Elongation Factor 1 Alpha ◽  
Alternaria Species ◽  
Pathogenicity Tests ◽  
North Western ◽  
A New Species

During a biodiversity survey of Alternaria associated with leaf spot and blight of Solanaceae, a large collection of strains was obtained from samples collected in north-western regions of Algeria in 2013–2018 growing seasons. Amongst these strains, three isolates recovered from tomato and potato had morphological traits different from that usually observed for Alternaria species previously reported on Solanaceae. Based on analysis of a sequence dataset corresponding to portions of the glyceraldehyde-3-phosphate dehydrogenase (gpd), translation elongation factor 1-alpha (tef1) and RNA polymerase second largest subunit (rpb2) genes along with morphological observations, isolates were identified as a new species in the section Japonicae. This novel species, described here as Alternaria telliensis, is phylogenetically and morphologically distinct from A. japonica and A. nepalensis in this section. Pathogenicity tests were performed and isolates were found to be weakly pathogenic to tomato and potato (Solanaceae) while highly aggressive on radish, cabbage and turnip (Brassicaceae) plants.

A new species of Scleroramularia associated with sooty blotch and flyspeck in Southern China

Phytotaxa ◽  
2015 ◽  
Vol 226 (3) ◽  
pp. 261 ◽  
Author(s):  
Liu Gao ◽  
Zhuoya Wei ◽  
Bo Wang ◽  
Mark L. Gleason ◽  
Rong Zhang ◽  
...  
Keyword(s):  
New Species ◽  
Southern China ◽  
Elongation Factor ◽  
Space Region ◽  
Translation Elongation ◽  
Sooty Blotch ◽  
Elongation Factor 1 Alpha ◽  
Sooty Blotch And Flyspeck ◽  
Elongation Factor 1 ◽  
A New Species

Scleroramularia is a genus that includes species of the sooty blotch and flyspeck (SBFS) fungal complex that blemishes the surface of apple, pawpaw, and other fruit. In a survey of SBFS on banana (Musa basjoo), an isolate associated with the flyspeck mycelial type of SBFS was obtained from Zhanjiang, Guangdong, China. Based on analysis of morphology and phylogeny (the nuclear ribosomal internal transcribed space region and translation elongation factor 1-alpha), it was delimited as a new species of Scleroramularia, described here as S. musae. Conidia of S. musae have more septa than other species presently known in the genus.

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