https://www.fabinet.up.ac.za/publication/pdfs/1395-2012_crous_et_al_studies_in_mycology.pdf

Phylogenetic lineages in Pseudocercospora

Anamorph genera associated with Mycos- phaerella are separated on a combination of charac- ters such as conidiomatal structure, the nature and arrangement of conidiophores, conidiogenesis, de- hiscence scars and pigmentation. To date 27 genera have been reported as anamorphs of Mycosphaerella, 19 of which were included in this study. Based on the phylogeny of the ITS1, 5.8S, and ITS2 rDNA se- quence data, Mycosphaerella proved to be monophy- letic. The major group consisted of several small clus- ters correlating to specific anamorph genera, as well as other clusters containing an assemblage of ana- morph genera. Although Mycosphaerella is monophy- letic, it appears that many of the morphological char- acters defining different anamorph genera evolved more than once and for the most part do not rep- resent true groups within Mycosphaerella. Neverthe- less, the anamorph generic concepts contain valuable information of practical use to plant pathologists and mycologists working with these organisms. Based on these results, as well as a re-evaluation of the criteria upon which anamorph genera are distinguished in

https://www.jstor.org/stable/pdfplus/3761670.pdf

A phylogenetic redefinition of anamorph genera in Mycosphaerella based on ITS rDNA sequence and morphology

In this paper, we review historical and contemporary species concepts and species recognition criteria for plant pathogenic fungi. Previous incongruent and unstable classification based on subjective and changing criteria have led to some confusion, especially amongst plant pathologists. The goal of systematics is to provide an informative and robust framework that stands the test of time. The taxonomic histories of Cercospora, Colletotrichum, Fusarium, as well as the rust and smut fungi, are used as examples, to show how concepts and criteria used to delimit and recognize species have changed. Through these examples we compare the Genealogical Concordance Phylogenetic Species Recognition, an extension of the Phylogenetic Species Criterion, with other species recognition criteria and show that it provides a better discrimination for delimiting species. A rapidly increasing number of cryptic species are being discovered amongst plant pathogenic fungi using the Genealogical Concordance Phylogenetic Species Recognition, and it is important to determine their host range, the severity of diseases they cause and their biosecurity significance. With rapidly expanding global trade it has become imperative that we develop effective and reliable protocols to detect these previously unrecognized pathogens.

http://max2.ese.u-psud.fr/publications/Cai_2011.pdf

Hsieh WenHsui

Papers

The genus Pseudocercospora in China.