共查询到20条相似文献,搜索用时 15 毫秒
1.
Françoise Botterel Karine Gross Oumaïma Ibrahim-Granet Khaled Khoufache Virginie Escabasse André Coste Catherine Cordonnier Estelle Escudier Stéphane Bretagne 《BMC microbiology》2008,8(1):97
Background
Invasive aspergillosis, which is mainly caused by the fungus Aspergillus fumigatus, is an increasing problem in immunocompromised patients. Infection occurs by inhalation of airborne conidia, which are first encountered by airway epithelial cells. Internalization of these conidia into the epithelial cells could serve as a portal of entry for this pathogenic fungus. 相似文献2.
Background
Gremmeniella abietina (Lagerb.) Morelet is an ascomycete fungus that causes stem canker and shoot dieback in many conifer species. The fungus is widespread and causes severe damage to forest plantations in Europe, North America and Asia. To facilitate early diagnosis and improve measures to control the spread of the disease, rapid, specific and sensitive detection methods for G. abietina in conifer hosts are needed. 相似文献3.
Volkan Yıldırım Servet Özcan Dörte Becher Knut Büttner Michael Hecker Gülay Özcengiz 《Proteome science》2011,9(1):12
Background
Total soluble proteome alterations of white rot fungus Phanerochaete chrysosporium in response to different doses (25, 50 and 100 μM) of Pb (II) were characterized by 2DE in combination with MALDI-TOF-MS. 相似文献4.
Background
A tannic acid-inducible and mycoviral-regulated laccase3 (lac 3) from the chestnut blight fungus Cryphonectria parasitica has recently been identified, but further characterization was hampered because of the precipitation of protein products by tannic acid supplementation. The present study investigated the heterologous expression of the functional laccase3 using a yeast Saccharomyces cerevisiae. 相似文献5.
Luis González-Candelas Santiago Alamar Paloma Sánchez-Torres Lorenzo Zacarías Jose F Marcos 《BMC plant biology》2010,10(1):194
Background
Postharvest losses of citrus fruit due to green mold decay, caused by the fungus Penicillium digitaum, have a considerable economic impact. However, little is known about the molecular processes underlying the response of citrus fruit to P. digitatum. 相似文献6.
Juliana A Parente Sílvia M Salem-Izacc Jaime M Santana Maristela Pereira Clayton L Borges Alexandre M Bailão Célia MA Soares 《BMC microbiology》2010,10(1):292
Background
Paracoccidioides brasiliensis is a thermodimorphic fungus, the causative agent of paracoccidioidomycosis (PCM). Serine proteases are widely distributed and this class of peptidase has been related to pathogenesis and nitrogen starvation in pathogenic fungi. 相似文献7.
Background
Sulphur compounds like cysteine, methionine and S-adenosylmethionine are essential for the viability of most cells. Thus many organisms have developed a complex regulatory circuit that governs the expression of enzymes involved in sulphur assimilation and metabolism. In the filamentous fungus Hypocrea jecorina (anamorph Trichoderma reesei) little is known about the participants in this circuit. 相似文献8.
Background
Rice blast disease is caused by the filamentous Ascomycetous fungus Magnaporthe oryzae and results in significant annual rice yield losses worldwide. Infection by this and many other fungal plant pathogens requires the development of a specialized infection cell called an appressorium. The molecular processes regulating appressorium formation are incompletely understood. 相似文献9.
10.
Mickael?Lafond Alexandra?Tauzin Véronique?Desseaux Estelle?Bonnin El-Hassan?Ajandouz Thierry?Giardina
Background
The filamentous fungus Penicillium funiculosum produces a range of glycoside hydrolases (GH). The XynD gene, encoding the sole P. funiculosum GH10 xylanase described so far, was cloned into the pPICZαA vector and expressed in methylotrophe yeast Pichia pastoris, in order to compare the results obtained with the P. funiculosum GH11 xylanases data. 相似文献11.
Background
Phosphoribosyl pyrophosphate (PRPP) is a central compound for cellular metabolism and may be considered as a link between carbon and nitrogen metabolism. PRPP is directly involved in the de novo and salvage biosynthesis of GTP, which is the immediate precursor of riboflavin. The industrial production of this vitamin using the fungus Ashbya gossypii is an important biotechnological process that is strongly influenced by substrate availability. 相似文献12.
Mari Aidemark Henrik Tjellström Anna Stina Sandelius Henrik Stålbrand Erik Andreasson Allan G Rasmusson Susanne Widell 《BMC plant biology》2010,10(1):274
Background
Alamethicin is a membrane-active peptide isolated from the beneficial root-colonising fungus Trichoderma viride. This peptide can insert into membranes to form voltage-dependent pores. We have previously shown that alamethicin efficiently permeabilises the plasma membrane, mitochondria and plastids of cultured plant cells. In the present investigation, tobacco cells (Nicotiana tabacum L. cv Bright Yellow-2) were pre-treated with elicitors of defence responses to study whether this would affect permeabilisation. 相似文献13.
Liz Valle-Aviles Shirley Valentin-Berrios Ricardo R Gonzalez-Mendez Nuri Rodriguez-del Valle 《BMC microbiology》2007,7(1):107
Background
Sporothrix schenckiiis a pathogenic, dimorphic fungus, the etiological agent of sporotrichosis, a subcutaneous lymphatic mycosis. Dimorphism inS. schenckiiresponds to second messengers such as cAMP and calcium, suggesting the possible involvement of a calcium/calmodulin kinase in its regulation. In this study we describe a novel calcium/calmodulin-dependent protein kinase gene inS. schenckii, sscmk1, and the effects of inhibitors of calmodulin and calcium/calmodulin kinases on the yeast to mycelium transition and the yeast cell cycle. 相似文献14.
Loknath Gidijala Roel AL Bovenberg Paul Klaassen Ida J van der Klei Marten Veenhuis Jan AKW Kiel 《BMC biotechnology》2008,8(1):29
Background
β-Lactams like penicillin and cephalosporin are among the oldest known antibiotics used against bacterial infections. Industrially, penicillin is produced by the filamentous fungus Penicillium chrysogenum. Our goal is to introduce the entire penicillin biosynthesis pathway into the methylotrophic yeast Hansenula polymorpha. Yeast species have the advantage of being versatile, easy to handle and cultivate, and possess superior fermentation properties relative to filamentous fungi. One of the fundamental challenges is to produce functionally active enzyme in H. polymorpha. 相似文献15.
16.
Lidia Irzykowska Zbigniew Weber Jan Bocianowski 《Central European Journal of Biology》2012,7(5):839-849
Background
The phytopathogenic ascomycete Claviceps purpurea causes the ergot — serious disease of rye and grasses. Its sclerotia containing toxic ergot alkaloids decrease a quality of cereal grain. The fungus infects young, unfertilized ovaries of the hosts. Due to the very short time in which infection can occur, growth rate of mycelium can play some role in the infection process. Resistance genes to C. purpurea have not been found so far. 相似文献17.
X.Q. Mao Z. Zhang H. Jiang R.Y. Chai H.P. Qiu J.Y. Wang X.F. Du B. Li G.C. Sun 《Journal of applied microbiology》2013,114(5):1480-1490
Aim
To examine the inhibition effects of rhizosphere fungal strain MF‐91 on the rice blast pathogen Magnaporthe grisea and sheath blight pathogen Rhizoctonia solani.Methods and Results
Rhizosphere fungal strain MF‐91 and its metabolites suppressed the in vitro mycelial growth of R. solani. The inhibitory effect of the metabolites was affected by incubation temperature, lighting time, initial pH and incubation time of rhizosphere fungal strain MF‐91. The in vitro mycelial growth of M. grisea was insignificantly inhibited by rhizosphere fungal strain MF‐91 and its metabolites. The metabolites of rhizosphere fungal strain MF‐91 significantly inhibited the conidial germination and appressorium formation of M. grisea. Moreover, the metabolites reduced the disease index of rice sheath blight by 35·02% in a greenhouse and 57·81% in a field as well as reduced the disease index of rice blast by 66·07% in a field. Rhizosphere fungal strain MF‐91 was identified as Chaetomium aureum based on the morphological observation, the analysis of 18S ribosomal DNA internal transcribed spacer sequence and its physiological characteristics, such as the optimal medium, temperature and initial pH for mycelial growth and sporulation production.Conclusions
Rhizosphere fungus C. aureum is effective in the biocontrolling of rice blast pathogen M. grisea and sheath blight pathogen R. solani both in in vitro and in vivo conditions.Significance and Impact of the Study
This study is the first to show that rhizosphere fungus C. aureum is a potential fungicide against rice blast and sheath blight pathogens. 相似文献18.
Background
The amino acid derivative 3,4-dihydroxy L-phenylalanine (L-dopa) is gaining interest as a drug of choice for Parkinson's disease. Aspergillus oryzae is commonly used for L-dopa production; however, a slower growth rate and relatively lower tyrosinase activity of mycelia have led to an increasing interest in exploiting alternative fungal cultures. In the present investigation, we report on the microbiological transformation of L-tyrosine to L-dopa accomplished by a newly isolated filamentous fungus Aspergillus niger. 相似文献19.
Kanokarn Kocharin Pranee Rachathewee Jean-Jacques Sanglier Wai Prathumpai 《BMC biotechnology》2010,10(1):51
Background
Biopolymers have various applications in medicine, food and petroleum industries. The ascomycetous fungus Ophiocordyceps dipterigena BCC 2073 produces an exobiopolymer, a (1→3)-β- D -glucan, in low quantity under screening conditions. Optimization of O. dipterigena BCC 2073 exobiopolymer production using experimental designs, a scale-up in 5 liter bioreactor, analysis of molecular weight at different cultivation times, and levels of induction of interleukin-8 synthesis are described in this study. 相似文献20.
Irina S Druzhinina Christian P Kubicek Monika Komoń-Zelazowska Temesgen Belayneh Mulaw John Bissett 《BMC evolutionary biology》2010,10(1):94