Evolutionary analysis of the powdery mildew fungi using nucleotide sequences of the nuclear ribosomal DNA
Evolutionary analysis of the powdery mildew fungi using nucleotide sequences of the nuclear ribosomal DNA
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DOI：
10.1080/00275514.2000.12061132
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发表时间：
2000-01
期刊：
影响因子：
2.8
通讯作者：
Y. Mori;Yukio Sato;S. Takamatsu
中科院分区：
文献类型：
--
作者：
Y. Mori;Yukio Sato;S. Takamatsu
摘要测定了15个属33种白粉病菌的18S、5.8S和28S rDNA及内转录间隔区的核苷酸序列，以推断这些真菌的系统发育关系。系统发育分析表明，钩丝壳septata被放置在原始基地的大分支组成的所有其他白粉病类群。白粉病，不包括Unc。septata被分成五个主要的谱系。Pseudoidium谱系由六个属组成，即，白粉菌属（Erysiphe）、微球菌属（Microsphaera）、钩丝壳属（Uncinula）、钩丝壳属（Uncinuliella）、巴西酵母属（Brasiliomyces）和盲囊壳属（Typhulochaeta），它们都具有多囊闭囊壳菌和假囊壳型无性型的特征。Eudoidium谱系由3个白粉菌属（E. cichoracearum、E. orontii和E. galeopsidis）和Arthrocladiellamougeotii，其特征为多囊闭囊藻和Euoidium型无性型。内生谱系由两个Phyllactinia物种（Phy. moricola和Phy. Kakicola）、鞑靼内丝孢（Leveillula taurica）和白刺丛毛孢（Pleochaeta shiraiana），其特征在于存在内生或部分内生菌丝体。纤维素谱系由Sawadaea、Cystotheca、Podosphaera和Sphaerotheca属组成，所有这些属的特征都是分生孢子和分生孢子梗中存在发育良好的纤维素体。单子叶植物谱系由一个物种组成，即禾本科布氏菌（Blumeria graminis），其特征在于寄生于单子叶植物，特别是谷类植物。讨论了几个主要特征的特征极化。菌丝状附属物长期以来一直被认为是一个祖先的字符可能是一个衍生的字符作为一个事件的结果，可能已经发生了多次独立的收敛。真孢子型无性型和棒状附着胞芽管被认为是假孢子型无性型和裂芽芽管的祖先特征。外生性和多囊闭囊藻也被认为是内生性和单囊闭囊藻的祖先特征。
Abstract The nucleotide sequences of the nuclear ribosomal DNA including 18S, 5.8S, and 28S rDNA and the internal transcribed spacer regions were determined for 33 powdery mildew taxa spanning 15 genera to infer the phylogenetic relationships for these fungi. Phylogenetic analyses revealed that Uncinula septata was placed in the primitive base to the large clade composed of all other powdery mildew taxa. Powdery mildews excluding Unc. septata were split into five major lineages. The Pseudoidium lineage consisted of six genera, i.e., Erysiphe, Microsphaera, Uncinula, Uncinuliella, Brasiliomyces, and Typhulochaeta, all of which are characterized by polyascal cleistothecia and Pseudoidium-type anamorph. The Eudoidium lineage consisted of three Erysiphe species (E. cichoracearum, E. orontii and E. galeopsidis) and Arthrocladiella mougeotii, which are characterized by polyascal cleistothecia and Euoidium-type anamorph. The endophytic lineage consisted of two Phyllactinia species (Phy. moricola and Phy. Kakicola), Leveillula taurica and Pleochaeta shiraiana, which are characterized by the presence of endophytic or partly endophytic mycelia. The fibrosin lineage consisted of the genera Sawadaea, Cystotheca, Podosphaera, and Sphaerotheca, all of which are characterized by the presence of well-developed fibrosin bodies in the conidia and conidiophores. The monocot lineage consisted of a single species, Blumeria graminis, which is well characterized by being parasitic to monocots, especially to cereal plants. Character polarization was discussed on several major characteristics. The mycelioid appendage which has long been regarded as an ancestral character may be a derived character as a result of an event that may have occurred multiple times independently due to convergence. Euoidium-type anamorph and clavate appressorial germ tube are considered to be ancestral characters to Pseudoidium-type anamorph and lobed germ tube. Ectophytic nature and polyascal cleistothecia are also regarded as ancestral features to endophytic nature and monoascal cleistothecia.