Abstract
Podosphaera thermopsidicola, a new sexual morph form of powdery mildew was discovered on living leaves of Thermopsis barbata Benth. (Fabaceae). It is described, illustrated and compared with other Podosphaera species reported on Fabaceae. The phylogeny of this species has been inferred from partial nuclear ribosomal 28S large subunit (LSU) and internal transcribed spacer (ITS) rDNA sequence data. On the basis of LSU, P. thermopsidicola represents characteristic feature of Podosphaera s. str. Phylogenetically, P. thermopsidicola is closer to P. erigerontis-canadensis but differs in having larger chasmothecia, longer appendages, thick-walled asci, smaller oculi and smaller ascospores.
References
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<a href="https://doi.org/10.5962/bhl.title.53755">https://doi.org/10.5962/bhl.title.53755</a>
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<a href="https://doi.org/10.1007/BF02463987">https://doi.org/10.1007/BF02463987</a>
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<a href="https://doi.org/10.1007/S10267-010-0092-1">https://doi.org/10.1007/S10267-010-0092-1</a>
Braun, U. (2017) Nomenclature of the fungal family name Erysiphaceae revisited. Schlechtendalia 32: 75–77.
Braun, U. & Cook, R.T.A. (2012) Taxonomic manual of the Erysiphales (Powdery Mildews). Fungal Biodiversity Centre (CBS Biodiversity Series No. 11), Utrecht, 707 pp.
Braun, U. & Takamatsu, S. (2000) Phylogeny of Erysiphe, Microsphaera, Uncinula (Erysipheae) and Cystotheca, Podosphaera, Sphaerotheca (Cystotheceae) inferred from rDNA ITS sequences – some taxonomic consequences. Schlechtendalia 4: 1–33.
Braun, U., Shishkoff, N. & Takamatsu, S. (2001) Phylogeny of Podosphaera sect. Sphaerotheca subsect. Magnicellulatae (Sphaerotheca fuliginea s.lat.) inferred from rDNA ITS sequences–a taxonomic interpretation. Schlechtendalia 7: 45–52.
Braun, U., Takamatsu, S., Heluta, V., Limkaisang, S., Divarangkoon, R., Cook, R.T.A. & Boyle, H. (2006) Phylogeny and taxonomy of powdery mildew fungi of Erysiphe sect. Uncinula on Carpinus species. Mycological Progress 5 (3): 139–153.
<a href="https://doi.org/10.1007/s11557-006-0509-6">https://doi.org/10.1007/s11557-006-0509-6</a>
Cunnington, J.H., Takamatsu, S., Lawrie, A.C. & Pascoe, I.G. (2003) Molecular identification of anamorphic powdery mildews (Erysiphales). Australasian Plant Pathology 32: 421–428.
<a href="https://doi.org/10.1071/AP03045">https://doi.org/10.1071/AP03045</a>
Hawksworth, D.L. (1974) Mycologist’s handbook. Commonwealth Mycological Institute, Kew, 231 pp.
<a href="https://doi.org/10.1016/S0007-1528(74)80047-7">https://doi.org/10.1016/S0007-1528(74)80047-7</a>
Heluta, V.P. (1981) Mestoroda Podosphaera Kunze v sheme vozmozhnyh filogeneticheskih vzaimosvyazey rodov muchnistorosyanyh gribov. Novosti Sistematiki Vysshikh i Nizshikh Rastenii 1979: 200–209.
Hirata, T., Cunnington, J.H., Paksiri, K., Limkaisang, S., Shishkoff, N., Grigaliunaite, B., Sato, Y. & Takamatsu, S. (2000) Evolutionary analysis of subsection Magnicellulatae of Podosphaera section Sphaerotheca (Erysiphales) based on the rDNA internal transcribed spacer sequences with special reference to host plants. Canadian Journal of Botany 78: 1521–1530.
<a href="https://doi.org/10.1139/b00-124">https://doi.org/10.1139/b00-124</a>
Inuma, T., Khodaparast, S.A. & Takamatsu, S. (2007) Multilocus phylogenetic analyses within Blumeria graminis, a powdery mildew fungus of cereals. Molecular Phylogenetics and Evolution 44: 741–751.
<a href="https://doi.org/10.1016/j.ympev.2007.01.007">https://doi.org/10.1016/j.ympev.2007.01.007</a>
Ito, M. & Takamatsu, S. (2010) Molecular phylogeny and evolution of subsection Magnicellulatae (Erysiphaceae: Podosphaera) with special reference to host plants. Mycoscience 51: 34–43.
<a href="https://doi.org/10.1007/S10267-009-0005-3">https://doi.org/10.1007/S10267-009-0005-3</a>
Jaczewski, A.A. (1927) Karmanny opredelitel’ gribov. Vyp. 2. Muchnisto-rosyanye griby. Mikologicheskaya Laboratoriya Imeni Professora A.A. Jaczewskogo, Gosudarstvennogo Instituta Opytnoy Agronomii, Leningrad.
Jankovics, T., Bai, Y., Kovács, G.M., Bardin, M., Nicot, P.C., Toyoda, H., Matsuda, Y., Niks, R.E. & Kiss, L. (2008) Oidium neolycopersici: Intraspecific variability inferred from amplified fragment length polymorphism analysis and relationship with closely related powdery mildew fungi infecting various plant species. Phytopathology 98: 529–540.
<a href="https://doi.org/10.1094/PHYTO-98-5-0529">https://doi.org/10.1094/PHYTO-98-5-0529</a>
Khodaparast, S.A., Takamatsu, S. & Hedjaroude, G.A. (2001) Phylogenetic structure of the genus Leveillula (Erysiphales: Erysiphaceae) inferred from the nucleotide sequences of the rDNA ITS region with special references to the Leveillula taurica species complex. Mycological Research 105: 909–918.
<a href="https://doi.org/10.1016/S0953-7562(08)61946-2">https://doi.org/10.1016/S0953-7562(08)61946-2</a>
Kimura, M. (1980) A simple method for estimating evolutionary rate of base substitutions through comparative studies of nucleotide sequences. Journal of Molecular Evolution 16: 111–120.
<a href="https://doi.org/10.1007/BF01731581">https://doi.org/10.1007/BF01731581</a>
Kiss, L., Cook, R.T.A., Saenz, G.S., Cunnington, J.H., Takamatsu, S., Pascoe, I., Bardin, M., Nicot, P.C., Sato, Y. & Rossman, A.Z. (2001) Identification of two powdery mildew fungi, Oidium neolycopersici sp. nov. and O. lycopersici, infecting tomato in different parts of the world. Mycological Research 105: 684–697.
<a href="https://doi.org/10.1017/S0953756201004105">https://doi.org/10.1017/S0953756201004105</a>
Kumar, S., Stecher, G., Li, M., Knyaz, C. & Tamura, K. (2018) MEGA X: Molecular Evolutionary Genetics Analysis across computing platforms. Molecular Biology and Evolution 35: 1547–1549.
<a href="https://doi.org/10.1093/molbev/msy096">https://doi.org/10.1093/molbev/msy096</a>
Kushwaha, P., Singh, R., Chaurasia, B. & Kumar, S. (2017) Phyllactinia braunii sp. nov. (Erysiphales) on Cordia myxa from Central India. Phytotaxa 205 (3): 140–148.
<a href="https://doi.org/10.11646/phytotaxa.305.3.2">https://doi.org/10.11646/phytotaxa.305.3.2</a>
Lebeda, A., Mieslerova´, B., Petrz?elova´, I. & Korbelova´, P. (2013) Host specificity and virulence variation in populations of lettuce powdery mildew pathogen (Golovinomyces cichoracearum s. str.) from prickly lettuce (Lactuca serriola). Mycological Progress 12: 533–545.
<a href="https://doi.org/10.1007/s11557-012-0860-8">https://doi.org/10.1007/s11557-012-0860-8</a>
Matsuda, S. & Takamatsu, S. (2003) Evolution of host–parasite relationships of Golovinomyces (Ascomycete: Erysiphaceae) inferred from nuclear rDNA sequences. Molecular Phylogenetics Evolution 27: 314–327.
<a href="https://doi.org/10.1016/S1055-7903(02)00401-3">https://doi.org/10.1016/S1055-7903(02)00401-3</a>
Mori, Y., Sato, Y. & Takamatsu, S. (2000a) Evolutionary analysis of the powdery mildew fungi (Erysiphales) using nucleotide sequences of the nuclear ribosomal DNA. Mycologia 92: 74–93.
<a href="https://doi.org/10.1080/00275514.2000.12061132">https://doi.org/10.1080/00275514.2000.12061132</a>
Mori, Y., Sato, Y. & Takamatsu, S. (2000b) Molecular phylogeny and radiation time of Erysiphales inferred from the nuclear ribosomal DNA sequences. Mycoscience 41: 437–447.
<a href="https://doi.org/10.1007/BF02461662">https://doi.org/10.1007/BF02461662</a>
Neger, F.W. (1901) BeiträgezurBiologie der Erysipheen. Flora 88: 333–370.
Nei, M. & Kumar, S. (2000) Molecular Evolution and Phylogenetics. Oxford University Press, New York, 352 pp.
Pastir?áková, K., Jankovics, T., Komáromi, J., Pintye, A. & Pastir?ák, M. (2016) Genetic diversity and host range of powdery mildews on Papaveraceae. Mycological Progress 15: 36.
<a href="https://doi.org/10.1007/s11557-016-1178-8">https://doi.org/10.1007/s11557-016-1178-8</a>
Ronquist, F., Teslenko, M., van der Mark, P., Ayres, D., Darling, A., Ohna, S.H., Larget, B., Liu, L., Suchard, M.A. & Huelsenbeck, J.P. (2012) MrBayes 3.2: Effcient Bayesian phylogenetic inference and model choice across a large model space. Systematic Biology 61: 539–542.
<a href="https://doi.org/10.1093/sysbio/sys029">https://doi.org/10.1093/sysbio/sys029</a>
Saenz, G.S. & Taylor, J.W. (1999) Phylogeny of the Erysiphales (powdery mildews) inferred from internal transcribed spacer ribosomal DNA sequences. Canadian Journal of Botany 77: 150–168.
<a href="https://doi.org/10.1139/b98-235">https://doi.org/10.1139/b98-235</a>
Savile, D.B.O. (1962) Collection and care of botanical specimens. Canadian Department of Agriculture, Publication, Research Branch 1113, pp. 1–124.
<a href="https://doi.org/10.5962/bhl.title.53755">https://doi.org/10.5962/bhl.title.53755</a>
Takamatsu, S. (2004) Phylogeny and evolution of the powdery mildew fungi (Erysiphales, Ascomycota) inferred from nuclear ribosomal DNA sequences. Mycoscience 45: 147–157.
<a href="https://doi.org/10.1007/S10267-003-0159-3">https://doi.org/10.1007/S10267-003-0159-3</a>
Takamatsu, S. (2013) Origin and evolution of the powdery mildews (Ascomycota, Erysiphales). Mycoscience 54: 75–86.
<a href="https://doi.org/10.1016/j.myc.2012.08.004">https://doi.org/10.1016/j.myc.2012.08.004</a>
Takamatsu, S. & Kano, Y. (2001) PCR primers useful for nucleotide sequencing of rDNA of the powdery mildew fungi. Mycoscience 42: 135–139.
<a href="https://doi.org/10.1007/BF02463987">https://doi.org/10.1007/BF02463987</a>
Takamatsu, S., Hirata, T. & Sato, Y. (2000) A parasitic transition from trees to herbs occurred at least twice in tribe Cystotheceae (Erysiphaceae): evidence from nuclear ribosomal DNA. Mycological Research 104 (11): 1304–1311.
<a href="https://doi.org/10.1017/S0953756200003014">https://doi.org/10.1017/S0953756200003014</a>
Takamatsu, S., Braun, U., Limkaisang, S., Kom-Un, S., Sato, S. & Cunnington, J.H. (2007) Phylogeny and taxonomy of the oak powdery mildew Erysiphe alphitoides sensu lato. Mycological Research 111: 809–826.
<a href="https://doi.org/10.1016/j.mycres.2007.05.013">https://doi.org/10.1016/j.mycres.2007.05.013</a>
Takamatsu, S., Inagaki, M., Niinomi, S., Khodaparast, S.A., Shin, H.D., Grigaliunaite, B. & Havrylenko, M. (2008) Comprehensive molecular phylogenetic analysis and evolution of the genus Phyllactinia (Ascomycota: Erysiphales) and its alien genera. Mycological Research 112: 229–315.
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