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detection and identification of the invasive sirex noctilio (hymenoptera: siricidae) fungal symbiont, amylostereum areolatum (russulales: amylostereacea), in china and the stimulating effect of insect venom on laccase production by a. areolatum yql03.the eurasian woodwasp sirex noctilio f. was first detected in daqing, heilongjiang province, in the northeast region of china in 2013. here, we investigated the s. noctilio's fungal symbiont, amylostereum areolatum, and insect venom produced in its acid (venom) gland. overall, seven out of 10 fungal isolates obtained from the mycangia of 10 adult s. noctilio females in this study were identified as a. areolatum. the remaining three isolates were identified as trichoderma viride, verticillium dah ...201526470239
identification and characterization of geo1, a new class ii hydrophobin from geosmithia spp.in the present paper we describe a new noncatalytic protein belonging to the hydrophobin family, designated geo1, purified from the culture filtrate of geosmithia pallida (ascomycota: hypocreales), and the corresponding gene sequence. in the fungal genome, geo1 was encoded by a single-copy gene with a 450 bp open reading frame interrupted by 2 small introns whose primary translation product was 109 amino acids long and included a 23 amino acids signal peptide. the mature protein had a molecular ...201222803587
assessing the pathogenic effect of fusarium, geosmithia and ophiostoma fungi from broad-leaved trees.phytopathogenic effect of geosmithia pallida, g. langdonii, ophiostoma grandicarpum, o. querci, two isolates of o. piceae, and two isolates of fusarium solani was compared using plant growth test (stem and root length of garden cress plants seeded on mycelium-covered potato carrot agar); ophiostoma spp. and f. solani were isolated from oak, geosmithia spp. from galleries of scolytus intricatus on beech. all fungi inhibited more the root elongation than that of stems. f. solani led to plant colla ...200515954534
morphological and molecular characterisation of geosmithia putterillii, g. pallida comb. nov. and g. flava sp. nov., associated with subcorticolous insects.geosmithia putterillii is an anamorphic fungus with connections to bark beetles. genetic variability of 89 isolates traditionally grouped in g. putterillii and g. lavendula isolated from different geographical regions from subcorticolous insects and from other unspecific substrata was assessed using rapd, sequencing of the its region (its1-5.8srdna-its2) and morphological characters. rapd analysis revealed eight distinct groups. one group was represented by g. lavendula type strain and showed no ...200415506017
morphological and molecular characterisation of geosmithia species on european elms.species of the genus geosmithia are associated with insect species, mainly bark beetles. on ulmus spp., the same beetles are also vectors of ophiostoma ulmi s.l., the agent of dutch elm disease (ded), a worldwide elm disease. aim of this paper is to characterise geosmithia species associated with elms and/or elm beetles in europe. seventy-two strains representative of all morphological taxonomic units were used to build a phylogenetic tree based on its, β-tubulin and elongation factor 1-α gene r ...201526466880
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