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Hybridization of an ITS-based macroarray with ITS community probes for characterization of complex communities of fungi and fungal-like protists 基于ITS的宏阵列与ITS群落探针的杂交用于真菌和真菌样原生生物复杂群落的表征
Mycological research Pub Date : 2009-06-01 DOI: 10.1016/j.mycres.2008.11.020
Antonio D. Izzo , Mark Mazzola
{"title":"Hybridization of an ITS-based macroarray with ITS community probes for characterization of complex communities of fungi and fungal-like protists","authors":"Antonio D. Izzo ,&nbsp;Mark Mazzola","doi":"10.1016/j.mycres.2008.11.020","DOIUrl":"10.1016/j.mycres.2008.11.020","url":null,"abstract":"<div><p>The ability to characterize fungal community structure and dynamics in the environment is constantly challenged by the high levels of diversity that must be confronted. Large-scale oligonucleotide arrays for use in such analytical studies are currently under development; however, the implementation of this approach generally requires substantial time and financial resources. To address the need for a more accessible tool for fungal community profiling and broad diagnostics, we evaluated the potential utility of a reverse dot blot approach utilizing macroarray targets and probes that each consisted of a PCR product of the entire fungal ITS1–5.8S–ITS2 gene region. Samples used to generate the array targets included both culturable and non-culturable fungi and fungal-like protists representing a range of ecological functions. Tests performed using single-species probes within the genus <em>Pythium</em> demonstrated that taxonomic lineages could generally be distinguished when ITS DNA sequence similarity differed by greater than 5–10<!--> <!-->%. An artificially constructed community probe of known composition successfully detected eight of the 10 lineages contained on the array with only one clear false positive in 95 targets. The approach was also successfully applied to environmental samples. Taxa resident in the soil of a local orchard were identified using the array and matched those documented in previous studies. Closely related taxa from a previously uncharacterized and geographically distant orchard soil were also identified by the array and had affinities to <em>Leptodontium</em>, <em>Cadophora</em>, <em>Zalerion</em>, and <em>Geomyces</em>. These taxa were further confirmed to be present in the sample by cloning and DNA sequencing. A minority of lineages had DNA targets with low melting temperatures which were not detected on the arrays except under conditions that compromised specificity. Membrane-based ITS macroarrays coupled with community ITS probes possessed sufficient power to detect multiple genus-level lineages of fungi in complex samples and should have broad applications in the study of fungal communities.</p></div>","PeriodicalId":19045,"journal":{"name":"Mycological research","volume":"113 6","pages":"Pages 802-812"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mycres.2008.11.020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28044513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Ferulic acid, an efficient inhibitor of type B trichothecene biosynthesis and Tri gene expression in Fusarium liquid cultures 阿魏酸:一种有效抑制镰刀菌液体培养物中B型霉烯生物合成和Tri基因表达的抑制剂
Mycological research Pub Date : 2009-06-01 DOI: 10.1016/j.mycres.2009.02.010
Anne-Laure Boutigny , Christian Barreau , Vessela Atanasova-Penichon , Marie-Noëlle Verdal-Bonnin , Laëtitia Pinson-Gadais , Florence Richard-Forget
{"title":"Ferulic acid, an efficient inhibitor of type B trichothecene biosynthesis and Tri gene expression in Fusarium liquid cultures","authors":"Anne-Laure Boutigny ,&nbsp;Christian Barreau ,&nbsp;Vessela Atanasova-Penichon ,&nbsp;Marie-Noëlle Verdal-Bonnin ,&nbsp;Laëtitia Pinson-Gadais ,&nbsp;Florence Richard-Forget","doi":"10.1016/j.mycres.2009.02.010","DOIUrl":"10.1016/j.mycres.2009.02.010","url":null,"abstract":"<div><p>The effect of ferulic acid, the most abundant phenolic acid in wheat bran, was studied <em>in vitro</em> on type B trichothecene biosynthesis by <em>Fusarium</em>. It was demonstrated that ferulic acid is an efficient inhibitor of mycotoxin production by all strains of <em>Fusarium</em> tested, including different chemotypes and species. To analyse the mechanism of toxin biosynthesis inhibition by ferulic acid, expression of representative <em>Tri</em> genes, involved in the trichothecene biosynthesis pathway, was monitored by real-time RT-PCR. A decrease in the level of <em>Tri</em> gene expression was measured, suggesting that inhibition of toxin synthesis by ferulic acid could be regulated at the transcriptional level. Moreover, toxin production was shown to be reduced proportionally to the initial amount of ferulic acid added in the culture medium. Addition of ferulic acid either at the spore germination step or to a mycelial culture resulted in the same final inhibitory effect on mycotoxin accumulation. A cumulative inhibitory effect on trichothecene biosynthesis was even observed with successive supplementation of ferulic acid. Ferulic acid, which content varies among wheat varieties, could then play an important role in modulating trichothecene biosynthesis by <em>Fusarium</em> in some wheat varieties.</p></div>","PeriodicalId":19045,"journal":{"name":"Mycological research","volume":"113 6","pages":"Pages 746-753"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mycres.2009.02.010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28012307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 146
Endophytic hyphal compartmentalization is required for successful symbiotic Ascomycota association with root cells 内生菌丝区隔化是子囊菌与根细胞成功共生的必要条件
Mycological research Pub Date : 2009-06-01 DOI: 10.1016/j.mycres.2009.02.013
Lobna Abdellatif , Sadok Bouzid , Susan Kaminskyj , Vladimir Vujanovic
{"title":"Endophytic hyphal compartmentalization is required for successful symbiotic Ascomycota association with root cells","authors":"Lobna Abdellatif ,&nbsp;Sadok Bouzid ,&nbsp;Susan Kaminskyj ,&nbsp;Vladimir Vujanovic","doi":"10.1016/j.mycres.2009.02.013","DOIUrl":"10.1016/j.mycres.2009.02.013","url":null,"abstract":"<div><p>Root endophytic fungi are seen as promising alternatives to replace chemical fertilizers and pesticides in sustainable and organic agriculture systems. Fungal endophytes structure formations play key roles in symbiotic intracellular association with plant-roots. To compare the morphologies of Ascomycete endophytic fungi in wheat, we analyzed growth morphologies during endophytic development of hyphae within the cortex of living <em>vs</em>. dead root cells. Confocal laser scanning microscopy (CLSM) was used to characterize fungal cell morphology within lactofuchsin-stained roots. Cell form regularity <em>Ireg</em> and cell growth direction <em>Idir</em>, indexes were used to quantify changes in fungal morphology. Endophyte fungi in living roots had a variable <em>Ireg</em> and <em>Idir</em> values, low colonization abundance and patchy colonization patterns, whereas the same endophyte species in dead (γ-irradiated) roots had consistent form of cells and mostly grew parallel to the root axis. Knot, coil and vesicle structures dominated in living roots, as putative symbiotic functional organs. Finally, an increased hypha septation in living roots might indicate local specialization within endophytic Ascomycota. Our results suggested that the applied method could be expanded to other septate fungal symbionts (e.g. Basidiomycota). The latter is discussed in light of our results and other recent discoveries.</p></div>","PeriodicalId":19045,"journal":{"name":"Mycological research","volume":"113 6","pages":"Pages 782-791"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mycres.2009.02.013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28029659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 23
Phylogenetic analysis of heavy-metal ATPases in fungi and characterization of the copper-transporting ATPase of Cochliobolus heterostrophus 真菌中重金属三磷酸腺苷酶的系统发育分析及异养蜗铜转运三磷酸腺苷酶的鉴定
Mycological research Pub Date : 2009-06-01 DOI: 10.1016/j.mycres.2009.02.009
Yoshimoto Saitoh, Kosuke Izumitsu, Chihiro Tanaka
{"title":"Phylogenetic analysis of heavy-metal ATPases in fungi and characterization of the copper-transporting ATPase of Cochliobolus heterostrophus","authors":"Yoshimoto Saitoh,&nbsp;Kosuke Izumitsu,&nbsp;Chihiro Tanaka","doi":"10.1016/j.mycres.2009.02.009","DOIUrl":"10.1016/j.mycres.2009.02.009","url":null,"abstract":"<div><p>We performed a phylogenetic analysis of heavy-metal ATPases (HMAs) in fungi and found that HMAs can be divided into three groups, A, B, and C. Group A is predicted to deliver copper ions to copper-containing proteins, while Groups B and C are thought to function as cell-membrane copper-efflux pumps. Furthermore, Groups B and C consist of fungal-specific HMAs, while Group A consists of fungal orthologues that have been well conserved in eukaryotes. We also cloned and characterized a Group A-type HMA gene (<em>i.e.</em>, <em>ChCcc2</em>) of the filamentous plant pathogen, <em>Cochliobolus heterostrophus</em>. Mutation of <em>ChCcc2</em> severely affected growth, pigmentation, conidiation, and colonial morphology. Activity of the copper-containing protein, laccase, was also lost in <em>ChCcc2</em> mutants, suggesting that ChCCC2 plays an important role in growth and morphology by activating various copper-containing proteins in <em>C. heterostrophus</em>.</p></div>","PeriodicalId":19045,"journal":{"name":"Mycological research","volume":"113 6","pages":"Pages 737-745"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mycres.2009.02.009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28012308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Evidence for the importance of enzymatic digestion of epidermal walls during subepidermal sporulation and pustule opening in white blister rusts (Albuginaceae) 在白色水疱锈病(白蛋白科)中表皮壁酶解在表皮下孢子形成和脓疱打开过程中的重要性的证据
Mycological research Pub Date : 2009-06-01 DOI: 10.1016/j.mycres.2009.01.009
Annerose Heller, Marco Thines
{"title":"Evidence for the importance of enzymatic digestion of epidermal walls during subepidermal sporulation and pustule opening in white blister rusts (Albuginaceae)","authors":"Annerose Heller,&nbsp;Marco Thines","doi":"10.1016/j.mycres.2009.01.009","DOIUrl":"10.1016/j.mycres.2009.01.009","url":null,"abstract":"<div><p><em>Albugo candida, A. ipomoeae-panduratae, Pustula tragopogonis, Wilsoniana bliti</em> and <em>W. portulacae</em> are widespread obligate biotrophic plant pathogens causing white blister diseases on a variety of flowering plants. Their subepidermal mode of sporulation is unique amongst Oomycetes and leads to blister-like structures on their hosts similar to those produced by true rusts (<em>Uredinales</em>). Unlike in true rusts, sporangia are colourless and produced in chains; the first formed, primary sporangium, differing in size and morphology from subsequent secondary sporangia. According to current interpretations of pustule development the rising pressure of the growing chains of sporangia tear off the epidermal layer from the mesophyll and, in the end, ruptures the epidermis to release the sporangia. This is not convincing considering the rigidity of the epidermal layer and the fact that thin-walled mesophyll cells show no signs of pressure endurance. Our detailed light-, scanning electron-, and transmission electron microscopic observations provide evidence that pustule development and opening are regulated and delicate processes that involve directed enzymatic dissection of host tissue cell walls. The process starts when intercellular hyphae separate the epidermal layer from the parenchyma, forming a cavity in which sporulation takes place. Then thick-walled sporogenous hyphae with club-shaped but thin-walled tips develop and produce sporangia in basipetal succession from the apices of the sporogenous hyphae. The short-living primary sporangia attach tightly to the inner cell walls of the epidermal layer and undergo dramatic cytological changes during pustule maturation, including vacuolisation and development of numerous electron-dense vesicles that might deliver cell wall degrading enzymes. In ripe pustules, the disintegration of areas of epidermal cells leads to the opening of the pustules and to the release of the secondary sporangia. Also the comparison of samples prepared for scanning electron microscopy with fresh pustules, as well as the comparison of the inner epidermal layers detached by the pathogens and detached by force supports our conclusion that delicate enzymatic activity and not force are involved in pustule development and opening by these highly sophisticated pathogens.</p></div>","PeriodicalId":19045,"journal":{"name":"Mycological research","volume":"113 6","pages":"Pages 657-667"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mycres.2009.01.009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28285478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 21
Mycological Research News1 真菌学研究新闻1
Mycological research Pub Date : 2009-06-01 DOI: 10.1016/j.mycres.2009.04.002
{"title":"Mycological Research News1","authors":"","doi":"10.1016/j.mycres.2009.04.002","DOIUrl":"https://doi.org/10.1016/j.mycres.2009.04.002","url":null,"abstract":"","PeriodicalId":19045,"journal":{"name":"Mycological research","volume":"113 6","pages":"Pages 655-656"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mycres.2009.04.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72026234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fungal pathogen (mis-) identifications: A case study with DNA barcodes on Melampsora rusts of aspen and white poplar 真菌病原体(错误)鉴定:以白杨和白杨黑腐菌的DNA条形码为例
Mycological research Pub Date : 2009-06-01 DOI: 10.1016/j.mycres.2009.02.007
Nicolas Feau , Agathe Vialle , Mathieu Allaire , Philippe Tanguay , David L. Joly , Pascal Frey , Brenda E. Callan , Richard C. Hamelin
{"title":"Fungal pathogen (mis-) identifications: A case study with DNA barcodes on Melampsora rusts of aspen and white poplar","authors":"Nicolas Feau ,&nbsp;Agathe Vialle ,&nbsp;Mathieu Allaire ,&nbsp;Philippe Tanguay ,&nbsp;David L. Joly ,&nbsp;Pascal Frey ,&nbsp;Brenda E. Callan ,&nbsp;Richard C. Hamelin","doi":"10.1016/j.mycres.2009.02.007","DOIUrl":"10.1016/j.mycres.2009.02.007","url":null,"abstract":"<div><p>Wide variation and overlap in morphological characters have led to confusion in species identification within the fungal rust genus <em>Melampsora</em>. The <em>Melampsora</em> species with uredinial–telial stages on white poplar and aspens are especially prone to misidentification. This group includes the <em>Melampsora populnea</em> species complex and the highly destructive pine twisting rust, <em>Melampsora pinitorqua</em>, which alternates between hosts in <em>Populus</em> section <em>Populus</em> and <em>Pinus</em>. Our objective was to compare morphologically based identification to genetic material extracted from <em>Melampsora</em> species pathogenic to aspen and white poplar. We compared morphometric traits and DNA barcodes obtained from internal transcribed spacer (<em>ITS</em>), large ribosomal RNA subunit (<em>28S</em>), and mitochondrial cytochrome oxidase 1 (<em>CO1</em>) sequences to delimit within this taxonomically difficult group. Eight different <em>Melampsora</em> species were initially defined based on host specificity and morphometric data. DNA barcodes were then overlaid on these initial species definitions. The DNA barcodes, specifically those defined on <em>ITS</em> and <em>28S</em> sequences, provided a highly accurate means of identifying and resolving <em>Melampsora</em> taxa. We highlighted species misidentification in specimens from Canadian herbaria related to either <em>Melampsora medusae</em> f. sp. <em>tremuloidae</em> or <em>Melampsora aecidioides</em>. Finally, we evidenced that the north-American species found on <em>Populus alba</em>, <em>M. aecidioides</em> is closely related but distinct from the four species of the <em>M. populnea</em> complex (<em>Melampsora larici-tremulae</em>, <em>Melampsora magnusiana</em>, <em>Melampsora pinitorqua</em>, and <em>Melampsora rostrupii</em>) found in Eurasia.</p></div>","PeriodicalId":19045,"journal":{"name":"Mycological research","volume":"113 6","pages":"Pages 713-724"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mycres.2009.02.007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28012311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 46
Diversity and habitat relationships of hypogeous fungi. III. Factors influencing the occurrence of fire-adapted species 下栖真菌的多样性及生境关系。3影响火适应物种发生的因素
Mycological research Pub Date : 2009-06-01 DOI: 10.1016/j.mycres.2009.02.014
Andrew W. Claridge , James M. Trappe , Douglas J. Mills , Debbie L. Claridge
{"title":"Diversity and habitat relationships of hypogeous fungi. III. Factors influencing the occurrence of fire-adapted species","authors":"Andrew W. Claridge ,&nbsp;James M. Trappe ,&nbsp;Douglas J. Mills ,&nbsp;Debbie L. Claridge","doi":"10.1016/j.mycres.2009.02.014","DOIUrl":"10.1016/j.mycres.2009.02.014","url":null,"abstract":"<div><p>Among the huge array of hypogeous ectomycorrhizal fungi so far documented from Australia, six genera and more than 30 species occur within the family Mesophelliaceae, all of which show various adaptations for surviving in fire-prone landscapes. These mostly endemic fungi are critical to postfire reestablishment of regenerating vegetation, and their fruit-bodies provide essential food resources for diverse ground-dwelling fauna. We developed habitat models for five common representatives of the Mesophelliaceae based on repeat collections of their fruit-bodies from 136 study plots situated along a series of environmental gradients across the south-eastern mainland of Australia. At a meso- or landscape scale, temperature influenced the occurrence of <em>Castoreum radicatum</em>, <em>Mesophellia clelandii</em> and <em>Nothocastoreum cretaceum</em>, with the type of response varying. Below a threshold, <em>C. radicatum</em> preferred sites with cooler mean annual temperatures. In contrast, <em>M. clelandii</em> and <em>N. cretaceum</em> had optimal ranges of temperature, above and below which the probability of detecting them dropped. Also at a landscape scale, <em>C. radicatum</em> was more likely to be detected at sites with lower levels of precipitation during the driest quarter of the year. At a micro-site scale, <em>M. clelandii</em> and <em>N. cretaceum</em> were more likely to occur in stands with an intermediate number of host eucalypt stems, likely relating to successional age of the stand. Sites with a higher number of large fallen trees were more likely to have <em>N. cretaceum</em>, while sites with intermediate litter depths were more likely to have <em>C. radicatum</em> and <em>M. clelandii</em>. <em>Mesophellia glauca</em> and <em>M. trabalis</em> showed no consistent patterns. They are apparently the most broadly adaptable in terms of the independent variables tested. Although fire has been previously suggested to be heavily implicated in the life cycle of several members of the Mesophelliaceae, we found no relationship between time since disturbance by fire and other factors and likelihood of occurrence. Instead, other habitat attributes appeared to be more important in explaining their distribution. The complex and differing responses of the species of Mesophelliaceae studied here, to features of their environment, reinforce the need to manage multiple-use forest landscapes across the region for a diversity of attributes.</p></div>","PeriodicalId":19045,"journal":{"name":"Mycological research","volume":"113 6","pages":"Pages 792-801"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mycres.2009.02.014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28029708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 33
Putative natural hybrid between Puccinia lagenophorae and an unknown rust fungus on Senecio madagascariensis in KwaZulu-Natal, South Africa 南非夸祖鲁-纳塔尔省Senecio madagascar上一种未知锈菌与lagenophorae锈菌的天然杂交
Mycological research Pub Date : 2009-06-01 DOI: 10.1016/j.mycres.2009.02.008
Louise Morin , Marlien van der Merwe , Diana Hartley , Petra Müller
{"title":"Putative natural hybrid between Puccinia lagenophorae and an unknown rust fungus on Senecio madagascariensis in KwaZulu-Natal, South Africa","authors":"Louise Morin ,&nbsp;Marlien van der Merwe ,&nbsp;Diana Hartley ,&nbsp;Petra Müller","doi":"10.1016/j.mycres.2009.02.008","DOIUrl":"10.1016/j.mycres.2009.02.008","url":null,"abstract":"<div><p>Several specimens of an aecial rust fungus were collected on <em>Senecio madagascariensis</em> during a field survey carried out in KwaZulu-Natal, South Africa. As telia were not present in the specimens collected, DNA sequence analyses were undertaken to determine the identity of the rust species. ITS and β-tub1 sequencing confirmed that one of the isolates recovered is <em>Puccinia lagenophorae sensu lato</em>. On the other hand, sequencing and RFLP analysis revealed the presence of two divergent copies of ITS and β-tub1 in all the other six isolates investigated. In both phylogenetic trees, one copy of the gene region grouped within a well supported clade with sequences of <em>P. lagenophorae</em> accessions from different geographical origins and hosts, and the Australian rusts <em>Puccinia saccardoi</em> and <em>Puccinia stylidii</em>. The other copy of these gene regions grouped within a separate clade comprising European accessions of <em>Puccinia dioicae</em> (ITS) and <em>Uromyces sommerfeltii</em> (β-tub1) that occur on <em>Asteraceae</em> hosts. Multiple copies of these gene regions were not observed in Australian isolates of <em>P. lagenophorae</em>. Our study provides some evidence that an interspecific hybrid rust fungus, with <em>P. lagenophorae</em> as one of its parents, may occur on <em>S. madagascariensis</em> in South Africa. The identity of the other parent remains unknown.</p></div>","PeriodicalId":19045,"journal":{"name":"Mycological research","volume":"113 6","pages":"Pages 725-736"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mycres.2009.02.008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28012306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 26
Distribution of the antifungal agents sordarins across filamentous fungi 抗真菌剂紫丹素在丝状真菌中的分布
Mycological research Pub Date : 2009-06-01 DOI: 10.1016/j.mycres.2009.02.011
Francisca Vicente , Angela Basilio , Gonzalo Platas , Javier Collado , Gerald F. Bills , Antonio González Del Val , Jesús Martín , José R. Tormo , Guy H. Harris , Deborah L. Zink , Michael Justice , Jennifer Nielsen Kahn , Fernando Peláez
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引用次数: 51
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