Pleosporales - CBS - KNAW
Pleosporales - CBS - KNAW
Pleosporales - CBS - KNAW
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Fungal Diversity<br />
minute, unilocular, setose pseudothecia with 2–3 wall<br />
layers; brown, fusoid, 1-septate ascospores, and an anamorphic<br />
stage (Phoma muscivora M.L. Davey & Currah)<br />
(Davey and Currah 2009). Based on an ITS rDNA<br />
sequences analysis, Atradidymella nested within Didymellaceae<br />
(Davey and Currah 2009).<br />
Bertiella (Sacc.) Sacc. & P. Syd., in Saccardo, Syll. fung.<br />
(Abellini) 14: 19 (1899).<br />
≡ Bertia subgen. Bertiella Sacc., Syll. fung. (Abellini) 1:<br />
584 (1882).<br />
Type species: Bertiella macrospora (Sacc.) Sacc. &<br />
Traverso, Syll. fung. (Abellini) 19: 147 (1910).<br />
≡ Bertia macrospora Sacc., Michelia 1(no. 8): 452 (1882).<br />
Bertia subg. Bertiella was raised to generic rank by Saccardo<br />
(1899), and is typified by B. macrospora. After studying the<br />
type specimen of B. macrospora, Eriksson and Yue (1986)<br />
assigned it to Massarina (as M. macrospora (Sacc.) O.E. Erikss.<br />
& J.Z. Yue). Concurrently, Bertiella is treated as a synonym of<br />
Massarina. Hydeetal.(2002) assigned Bertia macrospora to<br />
Lophiostoma as (L. bertiellum Aptroot & K.D. Hyde).<br />
The superficial ascomata, cylindro-clavate asci and<br />
hyaline 1-septate ascospores which may become 3-septate<br />
and pale brown when senescent and, in particular, the<br />
woody habitat indicate that B. macrospora may be related<br />
to Lophiostoma sensu Holm and Holm (1988). A single<br />
isolate of Bertiella macrospora clusters with Byssosphaeria<br />
in the Melanommataceae in a recent DNA based phylogeny<br />
(Mugambi and Huhndorf 2009b). The relationship between<br />
Bertiella and Byssosphaeria needs further study.<br />
Byssothecium Fuckel, Bot. Ztg. 19: 251 (1861).<br />
Type species: Byssothecium circinans Fuckel, Bot. Ztg.<br />
19: 251 (1861).<br />
The isotype of Byssothecium circinans is in FH as<br />
exiccatae (Fungi rhenani 730c); it was described by Boise<br />
(1983) and could not be loaned. Byssothecium circinans is<br />
regarded as a saprobe or weak parasite of Medicago sativa<br />
(Semeniuk 1983), and a Pleospora-type centrum was<br />
observed (Boise 1983). A Chaetophoma-like anamorph<br />
was produced in culture, however, no culture or herbarium<br />
specimen is listed (Boise 1983). Boise (1983) regarded<br />
Byssothecium circinans as closely related to Teichospora,<br />
however, confirmation is required. An isolate of Byssothecium<br />
circinans was sequenced and a multigene phylogeny<br />
placed it in close proximity to members of Massarinaceae<br />
(Schoch et al. 2009; Zhang et al. 2009a; Plate 1).<br />
Caryospora De Not., Micr. Ital. Novi 9: 7 (1855).<br />
Type species: Caryospora putaminum (Schwein.) De Not.,<br />
Micr. Ital., Dec. 9: 7 (1855).<br />
After studying the Caryospora species in North America,<br />
Barr (1979b) indicated that species of Caryospora may<br />
closely relate to Trematosphaeria. Boise (1985) distinguished<br />
Caryospora from Trematosphaeria based on the<br />
structure of ascospores. Currently, 17 taxa, from freshwater,<br />
marine, or terrestrial habitats (Raja and Shearer 2008), are<br />
included within Caryospora and might be polyphyletic.<br />
Celtidia J.D. Janse, Ann. Jard. Bot. Buitenzorg 14: 202 (1897).<br />
Type species: Celtidia duplicispora J.D. Janse, Ann. Jard.<br />
Bot. Buitenzorg 14: 202 (1897).<br />
Celtidia is a monotypic genus, which is characterized by<br />
its echinulate ascospores (Hawksworth 1979). It is only<br />
known from an illustration accompanying the original<br />
description from root nodules of Celtis in Java. A new<br />
collection is needed for further study of this genus.<br />
Chaetopreussia Locq.-Lin., Revue Mycol., Paris 41: 185<br />
(1977).<br />
Type species: Chaetopreussia chadefaudii Locq.-Lin.,<br />
Revue Mycol., Paris 41: 187 (1977).<br />
Chaetopreussia is a monotypic genus characterized by<br />
cleistothecioid ascomata with seta, and 3-septate ascospores<br />
without germ slits. Recent molecular analysis has shown that<br />
cleistothecioid ascomata and the presence of germ slits lack<br />
significance at the generic rank (Kruys and Wedin 2009).<br />
Chaetopreussia is possibly another synonym of Preussia.<br />
Clathrospora Rabenh., Hedwigia 1(18): 116 (1857).<br />
Type species: Clathrospora elynae Rabenh., Hedwigia 1:<br />
116 (1857).<br />
The most striking character of Clathrospora is its<br />
ascomata opening with an intraepidermal discoid lid and<br />
muriform applanate ascospores with more than one row of<br />
longitudinal septa (Shoemaker and Babcock 1992). The<br />
form of opening and applanate ascospores, however, might<br />
have limited significance at generic rank and thus,<br />
Clathrospora may be closely related to Pleosporaceae.<br />
Phylogenetic analysis based on nLSU, nSSU and mtSSU<br />
indicate that C. diplospora (Ellis & Everh.) Sacc. &<br />
Traverso nests in Pleosporaceae (Kruys et al. 2006).<br />
Clathrospora elynae is saprobic on monocots (Shoemaker<br />
and Babcock 1992).<br />
Cochliobolus Drechsler, Phytopathology 24: 973 (1934).<br />
Type species: Cochliobolus heterostrophus (Drechsler)<br />
Drechsler, Phytopathology 24: 973 (1934).<br />
Cochliobolus and its asexual relatives are well studied<br />
taxa in <strong>Pleosporales</strong> because of their economic importance.<br />
Cochliobolus includes both saprobic and pathogenic species<br />
that are significant monocot pathogens worldwide, which<br />
attack corn, rice, barley, sugarcane, wheat, and oats, all<br />
major cereal crops. Cochliobolus is characterized by globose<br />
or subglobose ascomata with a well defined long ostiolar<br />
papilla or cylindrical neck, a peridium composed of