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首页> 外文学位 >Phylogenetic study of Botryosphaeria species and associated anamorphic fungi and their evolutionary relationships with other ascomycetes.
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Phylogenetic study of Botryosphaeria species and associated anamorphic fungi and their evolutionary relationships with other ascomycetes.

机译：葡萄孢菌属物种和相关的变形真菌及其与其他子囊藻的进化关系的系统发育研究。

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摘要

The genus Botryosphaeria and many of the species comprising it are not well-defined. The goals of this research were to improve the understanding of species definition within Botryosphaeria, to resolve the relationships among different Botryosphaeria species, and to clarify their relationships with other filamentous ascomycetes. The specific objectives were to: (i) determine whether Botryosphaeria species and associated anamorphic fungi belong to a monophyletic group; (ii) determine whether form-genera of anamorphic fungi associated with Botryosphaeria species indicate close relationships among their members; (iii) infer phylogenetic relationships among Botryosphaeria species and associated anamorphic fungi; (iv) determine whether the specialization either on angiosperms or on gymnosperms contributed to the speciation of Botryosphaeriaspecies; (v) determine whether two types of Sphaeropsis sapinea and S. sapinea f. sp. cupressi are conspecific; (vi) determine whether B. dothidea and B. ribis are conspecific; and (vii) infer phylogenetic relationships of Botryosphaeria species with Guignardia species and other ascomycetes.;Phylogenetic analyses (including distance, parsimony, and maximum likelihood methods) of the ITS and 5.8s rDNA, mt SSU rDNA, and 18s rDNA sequences, cluster and principal coordinate analyses of the ISSR fingerprints, and cluster analysis of isozyme data from Botryosphaeria species and associated anamorphic fungi were performed in order to approach these objectives. Results indicate that the genus Botryosphaeria is not monophyletic, with B. vaccinii and Phyllosticta vaccinii not closely related to other fungi comprising this genus; within the main group of Botryosphaeria species and related anamorphic fungi, there is a division between the light-colored and narrow conidial subgroup and the dark-colored and broader conidial subgroup; B. ribis and B. dothidea are distinct; S. sapinea f. sp. cupressi is distinct from A and B RAPD marker groups of Sphaeropsis sapinea; form genera Sphaeropsis and Diplodia are not indicative of close relationships among different species within each genus; the specialization either on gymnosperms or on angiosperms is not indicative of close relationships among these fungi; Botryosphaeria and Guignardia are closely related; and the current placement of Botryosphaeria in Pleosporales of Loculoascomycetes was not supported. This study has established a foundation for future taxonomic and pathological research of Botryosphaeria species and related fungi.
机译：葡萄球菌属和包括它的许多物种没有明确的定义。这项研究的目的是增进对灰霉菌内物种定义的理解，解决不同灰霉菌种之间的关系，并阐明它们与其他丝状子囊菌的关系。具体目标是：（i）确定葡萄球菌物种和相关的变形真菌是否属于单系统物种； （ii）确定与灰霉菌属物种有关的变形真菌的属型是否表明其成员之间的密切关系； （iii）推断葡萄球菌物种和相关的变形真菌之间的系统发育关系； （iv）确定在被子植物或裸子植物上的专业化是否有助于葡萄孢属物种的形成； （v）确定是否有两种类型的Sphaeropsis sapinea和S. sapinea f。 sp。 cupressi是特定的； （vi）确定B. dothidea和B. ribis是否是同种的； （vii）推断出葡萄球菌属物种与圭亚那属物种和其他子囊菌的系统发育关系。ITS和5.8s rDNA，mt SSU rDNA和18s rDNA序列，簇和序列的系统发育分析（包括距离，简约和最大似然方法）。为了达到这些目的，进行了ISSR指纹的主坐标分析，以及来自灰球菌属物种和相关变形真菌的同工酶数据的聚类分析。结果表明，葡萄球菌属不是单系的，牛痘杆菌和牛疫杆菌与构成该属的其他真菌没有密切关系。在主要的灰霉菌属物种和相关的变形真菌内，浅色和分生孢子亚群与深色和宽分生孢子亚群之间存在划分。肋骨双歧杆菌和双歧双歧杆菌是截然不同的。南美番荔枝sp。 cupressi不同于Sapinea sapinea的A和B RAPD标记物组；球孢属和双翅目属的形式并不表示每个属内不同物种之间的密切关系；裸子植物或被子植物的专长并不表示这些真菌之间的密切关系；葡萄孢菌和吉氏菌属密切相关。目前尚不支持将灰霉菌放入当地的鼠李子菌中。这项研究为以后的葡萄球菌属物种和相关真菌的分类学和病理学研究奠定了基础。

著录项

  • 作者

    Zhou, Shiguo.;

  • 作者单位

    The University of Wisconsin - Madison.;

  • 授予单位 The University of Wisconsin - Madison.;
  • 学科 Biology Botany.;Agriculture Plant Pathology.;Biology Microbiology.
  • 学位 Ph.D.
  • 年度 2000
  • 页码 189 p.
  • 总页数 189
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 植物学;微生物学;植物病理学;
  • 关键词

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