scholarly journals Genetic Background of Variable Fumonisin Production in the Fusarium Fujikuroi Species Complex

2021 ◽  
Vol 9 (0) ◽  
pp. 43-55
Author(s):  
Sharmin Sultana ◽  
Haruhisa Suga
Keyword(s):  
Genetic Background ◽  
Species Complex ◽  
Fusarium Fujikuroi

scholarly journals Fusarium musae from Diseased Bananas and Human Patients: Susceptibility to Fungicides Used in Clinical and Agricultural Settings

2021 ◽  
Vol 7 (9) ◽  
pp. 784
Author(s):  
Valeria Tava ◽  
Anna Prigitano ◽  
Paolo Cortesi ◽  
Maria Carmela Esposto ◽  
Matias Pasquali
Keyword(s):  
Species Complex ◽  
Crown Rot ◽  
Fusarium Fujikuroi ◽  
Clinical Settings ◽  
Skin Infections ◽  
Minimal Inhibitory Concentrations ◽  
Worldwide Population ◽  
Fusarium Fujikuroi Species Complex ◽  
Rot Disease ◽  
Systemic Infections

Fusarium musae belongs to the Fusarium fujikuroi species complex. It causes crown rot disease in banana but also keratitis and skin infections as well as systemic infections in immunocompromised patients. Antifungal treatments in clinical and agricultural settings rely mostly on molecules belonging to the azole class. Given the potential risk of pathogen spread from food to clinical settings, the goal of the work was to define the level of susceptibility to different azoles of a worldwide population of F. musae. Eight fungicides used in agriculture and five antifungals used in clinical settings (4 azoles and amphotericin B) were tested using the CLSI (Clinical and Laboratory Standards Institute) protocol methodology on 19 F. musae strains collected from both infected patients and bananas. The level of susceptibility to the different active molecules was not dependent on the source of isolation with the exception of fenbuconazole and difenoconazole which had a higher efficiency on banana-isolated strains. Minimal inhibitory concentrations (MICs) of the different molecules ranged from 0.12–0.25 mg/L for prochloraz to more than 16 mg/L for tetraconazole and fenbuconazole. Compared to the F. verticillioides, F. musae MICs were higher suggesting the importance of monitoring the potential future spread of this species also in clinical settings.

scholarly journals Fusarium fujikuroi species complex in Brazilian rice: unveiling increased phylogenetic diversity and toxigenic potential

2020 ◽  
Author(s):  
Camila Primieri Nicolli ◽  
Miriam Haidukowskic ◽  
Antonia Susca ◽  
Larissa Bitencourt Gomes ◽  
Antonio Logrieco ◽  
...  
Keyword(s):  
Geographical Distribution ◽  
Species Complex ◽  
Phylogenetic Diversity ◽  
The Other ◽  
Fusarium Fujikuroi ◽  
Phylogenetic Species ◽  
Frequent Species ◽  
New Knowledge ◽  
Fusarium Sp ◽  
Fusarium Fujikuroi Species Complex

Fusarium fujikuroi species complex (FFSC) species are commonly encountered infecting rice, but knowledge of the diversity and toxigenic potential of the species is lacking in Brazil, the largest rice-producing country outside Asia. One hundred FFSC isolates obtained from national rice were identified using morphology and phylogeny of TEF, CAL and TUB genes. Eight previously known and one new phylogenetic species were identified. Three species accounted for around 60% of the strains: F. fujikuroi (n = 23), F. proliferatum (n = 22) and F. verticillioides (n = 16). The less frequent species were F. volatile (n = 8), F. anthophilum (n = 6), F. pseudocircinatum (n = 4), F. sterilihyphosum (n = 2) and F. begoniae (n = 1). The new Fusarium sp. was represented by 18 isolates. All species produced at least one of the analyzed mycotoxins [beauvericin (BEA), fumonisins (FBs), moniliformin (MON) and enniatins (ENNs)]. BEA was produced by all species but F. verticillioides. The FBs (mainly FB1) were produced mostly by F. fujikuroi, F. proliferatum and F. verticillioides. F. begoniae and F. verticillioides did not produce ENNs and F. sterilihyphosum and F. begoniae did no produce MON, while the other species produced MON and ENNs. Our results contribute new knowledge of the diversity, geographical distribution and hosts of FFSC species.

scholarly journals Keragaman Cendawan Pascapanen pada Umbi Bawang Merah Varietas Bima Brebes

2019 ◽  
Vol 14 (5) ◽  
pp. 175
Author(s):  
Okky Setyawati Dharmaputra ◽  
Sri Listiyowati ◽  
Ira Zahara Nurwulansari
Keyword(s):  
Species Complex ◽  
Pathogenic Fungi ◽  
Colony Growth ◽  
Fusarium Fujikuroi ◽  
Molecular Characteristics ◽  
Hot Pepper ◽  
Pathogenicity Test ◽  
Fungal Isolation ◽  
Fungi Infection ◽  
Colletotrichum Gloeosporioides Species Complex

Diversity of Postharvest Fungi on Shallot Bulbs Variety Bima BrebesIn Indonesia, shallot (Allium ascalonicum) is horticultural main commodity after hot pepper. Significant yield losses can be caused by postharvest fungi infection. Research on the diversity of postharvest fungi on shallot bulbs has been conducted in some countries, unfortunately little is done in Indonesia. The study was aimed to obtain information on the diversity of postharvest fungi infecting shallot bulbs variety Bima Brebes from several traditional markets in Bogor City. Shallot bulbs were collected in January and February 2016. The study consisted of fungal isolation from shallot bulbs, fungal pathogenicity test, and identification of pathogenic fungi based on morphological and molecular characteristics. Morphology identification was based on the color of fungal colony, growth pattern, as well as somatic and reproduction structures. Several species of pathogenic fungi were successfully identified from shallot bulbs i.e. Alternaria alternata, Aspergillus niger, Colletotrichum gloeosporioides species complex, Fusarium fujikuroi species complex, F. oxysporum, F. solani, Penicillium citrinum and P. pinophilum.  Among these fungi, the highest pathogenicity was shown by C.  gloeosporioides species complex.

Design and validation of a robust multiplex polymerase chain reaction assay for MAT idiomorph within the Fusarium fujikuroi species complex

Mycologia ◽  
2019 ◽  
Vol 111 (5) ◽  
pp. 772-781 ◽  
Author(s):  
Amelia C. Montoya-Martínez ◽  
Gerardo Rodríguez-Alvarado ◽  
Sylvia P. Fernández-Pavía ◽  
Robert H. Proctor ◽  
Hye-Seon Kim ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Polymerase Chain Reaction Assay ◽  
Multiplex Polymerase Chain Reaction ◽  
Species Complex ◽  
Fusarium Fujikuroi ◽  
Chain Reaction ◽  
Fusarium Fujikuroi Species Complex ◽  
Polymerase Chain

scholarly journals Fusarium udum revisited: a common, but poorly understood member of the Fusarium fujikuroi species complex

2018 ◽  
Vol 18 (1-2) ◽  
pp. 107-117 ◽  
Author(s):  
Ludwig H. Pfenning ◽  
Maruzanete Pereira de Melo ◽  
Marileide Moreira Costa ◽  
Ailton Reis ◽  
Cleia Santos Cabral ◽  
...  
Keyword(s):  
Species Complex ◽  
Fusarium Fujikuroi ◽  
Fusarium Udum ◽  
Fusarium Fujikuroi Species Complex

Species composition of and fumonisin production by the Fusarium fujikuroi species complex isolated from Korean cereals

2018 ◽  
Vol 267 ◽  
pp. 62-69 ◽  
Author(s):  
Jung-Hye Choi ◽  
Seolhee Lee ◽  
Ju-Young Nah ◽  
Hee-Kyoung Kim ◽  
Ji-Seon Paek ◽  
...  
Keyword(s):  
Species Composition ◽  
Species Complex ◽  
Fusarium Fujikuroi ◽  
Fusarium Fujikuroi Species Complex

scholarly journals Fusarium fujikuroi Species Complex Associated With Rice, Maize, and Soybean From Jiangsu Province, China: Phylogenetic, Pathogenic, and Toxigenic Analysis

Plant Disease ◽  
2020 ◽  
Vol 104 (8) ◽  
pp. 2193-2201 ◽  
Author(s):  
Jianbo Qiu ◽  
Yunan Lu ◽  
Dan He ◽  
Yin-Won Lee ◽  
Fang Ji ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Species Complex ◽  
Fusarium Species ◽  
Phylogenetic Analyses ◽  
Germination Rate ◽  
Population Level ◽  
Jiangsu Province ◽  
Fusarium Fujikuroi ◽  
Rice Seed ◽  
Fusarium Fujikuroi Species Complex

Species belonging to the Fusarium fujikuroi species complex (FFSC) are of vital importance and are a major concern for food quantity and quality worldwide, as they not only cause serious diseases in crops but also produce various mycotoxins. To characterize the population structure and evaluate the risk of poisonous secondary metabolites, a total of 237 candidate strains were isolated from rice, maize, and soybean samples in Jiangsu Province, China. Species identification of the individual strain was accomplished by sequencing the translation elongation factor 1α gene (TEF-1α) and the fumonisin (FB) synthetic gene (FUM1). The distribution of Fusarium species among the different crops was observed. The maize seeds were dominated by F. proliferatum (teleomorph, Gibberella intermedia) and F. verticillioides (teleomorph, G. moniliformis), whereas F. fujikuroi (teleomorph, G. fujikuroi) was the most frequently isolated species from rice and soybean samples. In addition, phylogenetic analyses of these strains were performed, and the results suggested clear groups showing no obvious relationship with the origin source. FFSC species pathogenicity and toxigenicity were studied. All of the species reduced the rice seed germination rate, with no significant differences. F. fujikuroi showed two distinct patterns of influencing the length of rice seedlings, which were correlated with FBs and gibberellic acid synthesis. FBs were mainly produced by F. verticillioides and F. proliferatum. F. proliferatum and F. fujikuroi also produced moniliformin and beauvericin. The toxigenicity of F. andiyazi (teleomorph, G. andiyazi) was extremely low. Further analysis indicated that the sequence variations in TEF-1α and the differences in the expression levels of the toxin synthesis genes were associated with the diversity of secondary metabolites in F. fujikuroi strains. These findings provide insight into the population-level characterization of the FFSC and might be helpful in the development of strategies for the management of diseases and mycotoxins.

scholarly journals Wild rice (O. latifolia) from natural ecosystems in the Pantanal region of Brazil: host to Fusarium incarnatum-equiseti species complex and highly contaminated by zearalenone

2020 ◽  
Author(s):  
Sabina Moser Tralamazza ◽  
Karim Cristina Piacentini ◽  
Geovana Dagostim Savi ◽  
Lorena Carnielli-Queiroz ◽  
Lívia de Carvalho Fontes ◽  
...  
Keyword(s):  
Wild Rice ◽  
Species Complex ◽  
Strong Support ◽  
Fungal Species ◽  
Fusarium Fujikuroi ◽  
Natural Ecosystem ◽  
Natural Ecosystems ◽  
Edible Plant ◽  
Oryza Latifolia ◽  
Rice Samples

AbstractWe assessed the mycobiota diversity and mycotoxin levels present in wild rice (Oryza latifolia) from the Pantanal region of Brazil; fundamental aspects of which are severely understudied as an edible plant from a natural ecosystem. We found a variety of fungal species contaminating the rice samples; the most frequent genera being Fusarium, Nigrospora and Cladosporium (35.9%, 26.1% and 15%, respectively). Within the Fusarium genus, the wild rice samples were mostly contaminated by the Fusarium incarnatum-equiseti species complex (FIESC) (80%) along with Fusarium fujikuroi species complex (20%). Phylogenetic analysis supported multiple FIESC species and gave strong support to the presence of two previously uncharacterized lineages within the complex (LN1 and LN2). Deoxynivalenol (DON) and zearalenone (ZEA) chemical analysis showed that most of the isolates were DON/ZEA producers and some were defined as high ZEA producers, displaying abundant ZEA levels over DON (over 19 times more). Suggesting that ZEA likely has a key adaptive role for FIESC in wild rice (O. latifolia). Mycotoxin determination in the rice samples revealed high frequency of ZEA, and 85% of rice samples had levels >100 μg/kg; the recommended limit set by regulatory agencies. DON was only detected in 5.2% of the samples. Our data shows that FIESC species are the main source of ZEA contamination in wild rice and the excessive levels of ZEA found in the rice samples raises considerable safety concerns regarding wild rice consumption by humans and animals.

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