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Claudinéia A.S. Araújo Luciana P. Dias Paulo C. Ferreira Josane Mittmann Breno Pupin Guilherme.T.P. Brancini Gilberto Ú.L. Braga Drauzio E.N. Rangel 《Fungal biology》2018,122(6):621-628
Survival of entomopathogenic fungi under solar ultraviolet (UV) radiation is paramount to the success of biological control of insect pests and disease vectors. The mutagenic compound 4-nitroquinoline 1-oxide (4-NQO) is often used to mimic the biological effects of UV radiation on organisms. Therefore, we asked whether tolerance to 4-NQO could predict tolerance to UV radiation in thirty isolates of entomopathogenic fungi and one isolate of a xerophilic fungus. A dendrogram obtained from cluster analyses based on the 50 and 90 % inhibitory concentrations (IC50 and IC90, respectively) divided the fungal isolates into six clusters numbered consecutively based on their tolerance to 4-NQO. Cluster 6 contained species with highest tolerance to 4-NQO (IC50 > 4.7 μM), including Mariannaea pruinosa, Lecanicillium aphanocladii, and Torrubiella homopterorum. Cluster 1 contained species least tolerant to 4-NQO (IC50 < 0.2 μM), such as Metarhizium acridum (ARSEF 324), Tolypocladium geodes, and Metarhizium brunneum (ARSEF 7711). With few exceptions, the majority of Metarhizium species showed moderate to low tolerances (IC50 between 0.4 and 0.9 μM) and were placed in cluster 2. Cluster 3 included species with moderate tolerance (IC50 between 1.0 and 1.2 μM). In cluster 4 were species with moderate to high tolerance (IC50 between 1.3 and 1.6 μM). Cluster 5 contained the species with high tolerance (IC50 between 1.9 and 4.0 μM). The most UV tolerant isolate of M. acridum, ARSEF 324, was the least tolerant to 4-NQO. Also, L. aphanocladii, which is very susceptible to UV radiation, showed high tolerance to 4-NQO. Our results indicate that tolerance to 4-NQO does not correlate with tolerance to UV radiation. Therefore this chemical compound is not a predictor of UV tolerance in entomopathogenic fungi. 相似文献
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虫壳属一新种大别山虫壳(Torrubieladabieshanensis)及其同时在蛛体上并存的无性型大别山球束梗孢(Gibeluladabieshanensis)。子囊壳表生至浅埋生,孔口黄色,子囊孢子弹射后呈波浪形弯曲。次生子囊孢子长柱形,9.4~15.1×0.7~1.2μm。孢梗束单个或两个,白色,在其2/3处仍有分生孢子梗。分生孢子梗长27~44μm,光滑。分生孢子纺锤形,3.2~4.0×1.1~1.8μm。具糙梗孢式的共无性型方式,分生孢子线形,11.0~20.0×0.7~1.1μm。列出了该属已知种的检索表,并分别命以中名 相似文献
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在贵州樊静山和吉林长白山食线虫菌物调查中,发现2种相近的菌物,经比较研究后,将长白山菌株鉴定为球捕轮虫霉新种(ZoophagustylopagusLiu&Zhang),将樊静山菌株鉴定为胶孢轮虫霉(Zoophaguspectosporus(Drechsler)Dick)中国新记录种。标本保藏在中国科学院微生物研究所菌物标本室(HMAS)。 相似文献
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Sudarshan Maurya Ritesh Kumar Jaipal S. Choudhary C.S. Prabhakar Gopal Shukla Bikash Das 《Archives Of Phytopathology And Plant Protection》2013,46(19):2356-2359
Torrubeilla pruinosa, a teliomorph of an anamorphic entomopathogenic fungus Hirsutella versicolor on mango hopper (Idioscopus clypealis) was observed. On the infected mango hopper, tiny pin head signs of ascomata were observed. Ascomata of T. pruinosa is pale brown or tawny brown, crowded, immersed in stroma, wall dark golden brown, 260–320?×?230–260?μm, asci clavate, hyaline and thin walled. The ascospores of T. pruinosa are fusiform, distoseptate with a faint tint of pigmentation, 17.5–25.0?×?5.0–7.5?μm. The anamorph stage of H. versicolor fungal hyphae is hyaline, septate and profusely branched, and conidiogenous (phialides) cells are hyaline, pear-shaped and smooth-walled with single or double sterigmata and rarely, multiple sterigmata. Each sterigmata bears single conidia which are hyaline, oval to pear-shaped. 相似文献
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