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Truffle group

Samad Ashrafi, Dániel G Knapp, Damien Blaudez, Michel Chalot, Jose G Maciá-Vicente, Imre Zagyva, Abdelfattah A Dababat, Wolfgang Maier, Gábor M Kovács
Fungal root endophytes, including the common group of dark septate endophytes (DSEs), represent different taxonomic groups and potentially diverse life strategies. In this study, we investigated two unidentified helotialean lineages found previously in a study of DSE fungi of semiarid grasslands, from several other sites, and collected recently from a pezizalean truffle ascoma and eggs of the cereal cyst nematode Heterodera filipjevi. The taxonomic positions and phylogenetic relationships of 21 isolates with different hosts and geographic origins were studied in detail...
March 26, 2018: Mycologia
Tiziana Frusca, Tullia Todros, Christoph Lees, Caterina M Bilardo
BACKGROUND: Early-onset fetal growth restriction represents a particular dilemma in clinical management balancing the risk of iatrogenic prematurity with waiting for the fetus to gain more maturity, while being exposed to the risk of intrauterine death or the sequelae of acidosis. OBJECTIVE: The Trial of Umbilical and Fetal Flow in Europe was a European, multicenter, randomized trial aimed to determine according to which criteria delivery should be triggered in early fetal growth restriction...
February 2018: American Journal of Obstetrics and Gynecology
Elena Sorrentino, Mariantonietta Succi, Luca Tipaldi, Gianfranco Pannella, Lucia Maiuro, Marina Sturchio, Raffaele Coppola, Patrizio Tremonte
Refrigeration alone or in combination with other technologies represents the main tool used in the last decades to preserve the freshness of black truffles. This is principally due to the delicateness and vulnerability of this edible hypogeous fungus, so that other invasive preservation practices cannot be adopted. However, the proliferation of some microbial species during the cold storage still represents an unsolved problem. Pseudomonads are among the main spoiler bacteria responsible for the deterioration of refrigerated black truffles...
February 2, 2018: International Journal of Food Microbiology
C M Bilardo, K Hecher, G H A Visser, A T Papageorghiou, N Marlow, B Thilaganathan, A Van Wassenaer-Leemhuis, T Todros, K Marsal, T Frusca, B Arabin, C Brezinka, J B Derks, A Diemert, J J Duvekot, E Ferrazzi, W Ganzevoort, P Martinelli, E Ostermayer, D Schlembach, H Valensise, J Thornton, H Wolf, C Lees
No abstract text is available yet for this article.
September 2017: Ultrasound in Obstetrics & Gynecology
S Janet Kuramoto-Crawford, Sasha McGee, Keith Li, Andrew K Hennenfent, Kossia Dassie, Jhetari T Carney, Arian Gibson, Ivory Cooper, Morris Blaylock, Reginald Blackwell, Angela Fields, John Davies-Cole
On September 8, 2015, the District of Columbia Department of Health (DCDOH) received a call from a person who reported experiencing gastrointestinal illness after eating at a District of Columbia (DC) restaurant with multiple locations throughout the United States (restaurant A). Later the same day, a local emergency department notified DCDOH to report four persons with gastrointestinal illness, all of whom had eaten at restaurant A during August 30-September 5. Two patients had laboratory-confirmed Salmonella group D by stool culture...
March 17, 2017: MMWR. Morbidity and Mortality Weekly Report
W Ganzevoort, N Mensing Van Charante, B Thilaganathan, F Prefumo, B Arabin, C M Bilardo, C Brezinka, J B Derks, A Diemert, J J Duvekot, E Ferrazzi, T Frusca, K Hecher, N Marlow, P Martinelli, E Ostermayer, A T Papageorghiou, D Schlembach, K T M Schneider, T Todros, A Valcamonico, G H A Visser, A Van Wassenaer-Leemhuis, C C Lees, H Wolf
OBJECTIVES: In the recent TRUFFLE study, it appeared that, in pregnancies complicated by fetal growth restriction (FGR) between 26 and 32 weeks' gestation, monitoring of the fetal ductus venosus (DV) waveform combined with computed cardiotocography (CTG) to determine timing of delivery increased the chance of infant survival without neurological impairment. However, concerns with the interpretation were raised, as DV monitoring appeared to be associated with a non-significant increase in fetal death, and some infants were delivered after 32 weeks, at which time the study protocol no longer applied...
June 2017: Ultrasound in Obstetrics & Gynecology
Stefania Pinto, Fabio Gatti, Luis G García-Montero, Cristina Menta
There are numerous aspects related to Tuber species, which have not been explored to date. Tuber aestivum Vitt. is an ectomycorrhizal fungus, that produces an area (called brûlé) around the host plant trunk, where the germination of other plants is inhibited. What happens inside this particular environment is still not sufficiently understood, especially in terms of soil fauna. A previous work showed that there were higher microarthropod abundances outside during the period of maximum activity of the mycelium...
April 15, 2017: Science of the Total Environment
A G Van Wassenaer-Leemhuis, N Marlow, C Lees, H Wolf
OBJECTIVE: To study the relationship between neonatal morbidity (NNM) and two-year neurodevelopmental impairment (NDI) in surviving children after early fetal growth restriction (FGR). DESIGN: Secondary analysis of a European randomised trial (TRUFFLE) of delivery for very preterm fetuses dependent on venous Doppler or cardiotocographic criteria. SETTING: Tertiary perinatal centres, participants in TRUFFLE. POPULATION: 402 surviving children after early FGR...
June 2017: BJOG: An International Journal of Obstetrics and Gynaecology
G H A Visser, C M Bilardo, J B Derks, E Ferrazzi, N Fratelli, T Frusca, W Ganzevoort, C C Lees, R Napolitano, T Todros, H Wolf, K Hecher
OBJECTIVE: In the TRUFFLE (Trial of Randomized Umbilical and Fetal Flow in Europe) study on the outcome of early fetal growth restriction, women were allocated to one of three groups of indication for delivery according to the following monitoring strategies: (1) reduced fetal heart rate (FHR) short-term variation (STV) on cardiotocography (CTG); (2) early changes in fetal ductus venosus (DV) waveform (DV-p95); and (3) late changes in fetal DV waveform (DV-no-A). However, many infants per monitoring protocol were delivered because of safety-net criteria, for maternal or other fetal indications, or after 32 weeks of gestation when the protocol was no longer applied...
September 2017: Ultrasound in Obstetrics & Gynecology
Yu Fu, Xiaolin Li, Qiang Li, Haowei Wu, Chuan Xiong, Qi Geng, Honghu Sun, Qun Sun
Tuber pseudoexcavatum, Tuber sinoaestivum, and Tuber indicum are the 3 most important truffles growing in southeast China; however, their cultivation is still inefficient owing to the lack of understanding regarding the composition and function of the bacterial and fungal communities from the soils around the fruit bodies and the ectomycorrhiza of these truffles. The aim of this study was to disclose the microbial communities in truffle-producing soils in Huidong County, Sichuan, China, by using barcoded pyrosequencing...
June 27, 2016: Canadian Journal of Microbiology
H Wolf, B Arabin, C C Lees, D Oepkes, F Prefumo, B Thilaganathan, T Todros, G H A Visser, C M Bilardo, J B Derks, A Diemert, J J Duvekot, E Ferrazzi, T Frusca, K Hecher, N Marlow, P Martinelli, E Ostermayer, A T Papageorghiou, H C J Scheepers, D Schlembach, K T M Schneider, A Valcamonico, A van Wassenaer-Leemhuis, W Ganzevoort
OBJECTIVES: To explore whether, in early fetal growth restriction (FGR), the longitudinal pattern of fetal heart rate (FHR) short-term variation (STV) can be used to identify imminent fetal distress and whether abnormalities of FHR recordings are associated with 2-year infant outcome. METHODS: The original TRUFFLE study assessed whether, in early FGR, delivery based on ductus venosus (DV) Doppler pulsatility index (PI), in combination with safety-net criteria of very low STV on cardiotocography (CTG) and/or recurrent FHR decelerations, could improve 2-year infant survival without neurological impairment in comparison with delivery based on CTG monitoring only...
July 2017: Ultrasound in Obstetrics & Gynecology
Virginie Molinier, Claude Murat, Andri Baltensweiler, Ulf Büntgen, Francis Martin, Barbara Meier, Barbara Moser, Ludger Sproll, Ulrich Stobbe, Willy Tegel, Simon Egli, Martina Peter
Although the Burgundy truffle (Tuber aestivum) is an ectomycorrhizal fungus of important economic value, its subterranean life cycle and population biology are still poorly understood. Here, we determine mating type and simple sequence repeat (SSR) maternal genotypes of mapped fruiting bodies to assess their genetic structure within two naturally colonized forest sites in southern Germany. Forty-one genotypes were identified from 112 fruiting bodies. According to their mating types, the maternal genotypes were aggregated only in one population...
November 2016: Mycorrhiza
Li Fan, Peng-rui Zhang, Xiang-yuan Yan, Yu Li
In phylogenetic analyses based on the internal transcribed spacers and 28S nuc rDNA and translation elongation factor 1-α to compare Chinese white truffle specimens that have ascomata resembling the European Tuber borchii, the sequences of Chinese species resembling T. borchii in morphology grouped into seven distinct clusters among three clades: Puberulum, Maculatum and Latisporum No sequences from these Chinese species matched those of the European T. borchii and the occurrence of the European T. borchii in China could not be supported by our study...
March 2016: Mycologia
Shan-Ping Wan, Fu-Qiang Yu, Li Tang, Ran Wang, Yun Wang, Pei-Gui Liu, Xiang-Hua Wang, Yi Zheng
Tuber huidongense and T. liyuanum are common commercial white truffles in China that belong to the Rufum and Puberulum groups of the genus Tuber, respectively. Their mycorrhizae were successfully synthesized with two native trees--Castanea mollissima and Pinus armandii--under greenhouse conditions. The identities of the mycorrhizae were confirmed through internal transcribed spacer (ITS) sequence analyses, and their morphological characteristics were described. All of the obtained mycorrhizae have an interlocking pseudoparenchymatous mantle, which is a typical feature of truffle mycorrhizae...
April 2016: Mycorrhiza
C Alisha Quandt, Kathryn E Bushley, Joseph W Spatafora
BACKGROUND: Two major mycoparasitic lineages, the family Hypocreaceae and the genus Tolypocladium, exist within the fungal order, Hypocreales. Peptaibiotics are a group of secondary metabolites almost exclusively described from Trichoderma species of Hypocreaceae. Peptaibiotics are produced by nonribosomal peptide synthetases (NRPSs) and have antibiotic and antifungal activities. Tolypocladium species are mainly truffle parasites, but a few species are insect pathogens. RESULTS: The draft genome sequence of the truffle parasite Tolypocladium ophioglossoides was generated and numerous secondary metabolite clusters were discovered, many of which have no known putative product...
2015: BMC Genomics
Maryam Vahdatzadeh, Aurélie Deveau, Richard Splivallo
Truffles (Tuber spp.) are ascomycete subterraneous fungi that form ectomycorrhizas in a symbiotic relationship with plant roots. Their fruiting bodies are appreciated for their distinctive aroma, which might be partially derived from microbes. Indeed, truffle fruiting bodies are colonized by a diverse microbial community made up of bacteria, yeasts, guest filamentous fungi, and viruses. The aim of this minireview is two-fold. First, the current knowledge on the microbial community composition of truffles has been synthesized to highlight similarities and differences among four truffle (Tuber) species (T...
October 2015: Applied and Environmental Microbiology
Virginie Molinier, Claude Murat, Martina Peter, Armelle Gollotte, Herminia De la Varga, Barbara Meier, Simon Egli, Beatrice Belfiori, Francesco Paolocci, Daniel Wipf
Tuber species are ectomycorrhizal ascomycetes establishing relationships with different host trees and forming hypogeous fruiting bodies known as truffles. Among Tuber species, Tuber aestivum Vittad. has a wide distributional range being found naturally all over Europe. Here, we performed large-scale population genetic analyses in T. aestivum to (i) investigate its genetic diversity at the European scale, (ii) characterize its genetic structure and test for the presence of ecotypes and (iii) shed light into its demographic history...
February 2016: Mycorrhiza
Christoph C Lees, Neil Marlow, Aleid van Wassenaer-Leemhuis, Birgit Arabin, Caterina M Bilardo, Christoph Brezinka, Sandra Calvert, Jan B Derks, Anke Diemert, Johannes J Duvekot, Enrico Ferrazzi, Tiziana Frusca, Wessel Ganzevoort, Kurt Hecher, Pasquale Martinelli, Eva Ostermayer, Aris T Papageorghiou, Dietmar Schlembach, K T M Schneider, Baskaran Thilaganathan, Tullia Todros, Adriana Valcamonico, Gerard H A Visser, Hans Wolf
BACKGROUND: No consensus exists for the best way to monitor and when to trigger delivery in mothers of babies with fetal growth restriction. We aimed to assess whether changes in the fetal ductus venosus Doppler waveform (DV) could be used as indications for delivery instead of cardiotocography short-term variation (STV). METHODS: In this prospective, European multicentre, unblinded, randomised study, we included women with singleton fetuses at 26-32 weeks of gestation who had very preterm fetal growth restriction (ie, low abdominal circumference [<10th percentile] and a high umbilical artery Doppler pulsatility index [>95th percentile])...
May 30, 2015: Lancet
Ya-Jie Tang, Rui-Sang Liu, Hong-Mei Li
Truffle (Tuber spp.), also known as "underground gold," is popular in various cuisines because of its unique and characteristic aroma. Currently, truffle fruiting bodies are mostly obtained from nature and semi-artificial cultivation. However, the former source is scarce, and the latter is time-consuming, usually taking 4 to 12 years before harvest of the fruiting body. The truffle submerged fermentation process was first developed in Tang's lab as an alternative to its fruiting bodies. To the best of our knowledge, most reports of truffle submerged fermentation come from Tang's group...
March 2015: Applied Microbiology and Biotechnology
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