Studies in <i>Pseudocyphellaria</i> (lichens) II. Ecuadorean species

Galloway, D. J.; Arvidsson, Lars

doi:10.1017/s0024282990000081

Cited by 56 publications

(92 citation statements)

References 13 publications

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“…Our experience with P. crocata in the Neotropics suggests that at least two distinct taxa are present: one with mostly marginal soralia (resembling P. perpetua but with a white medulla) and the other with predominantly laminal soralia. We have not revised any voucher material of the P. crocata sequences in Genbank, and therefore cannot state at present whether and which of these correspond to the different morphodemes, but it appears that concepts of the name P. crocata representing several species (Magnusson 1940;Galloway , 1992Galloway , 1994Galloway & Arvidsson 1990;Miądlikowska et al 2002) are correct.…”

Section: The Lichenologist 216mentioning

confidence: 97%

Phylogeny of the Lobariaceae (lichenized Ascomycota: Peltigerales), with a reappraisal of the genus Lobariella

2013

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The generic classification of Lobariaceae based on a three-gene phylogeny of mtSSU, nuLSU and ITS data, with special reference to the genus Lobariella, is reassessed. Twelve wellsupported clades are recognized within Lobariaceae, which correlate with morpho-chemical and ecological features and are suggested to represent distinct generic lineages within the family. Lobaria s. lat. forms at least six lineages: Lobaria s. str. (type L. pulmonaria), the Pseudocyphellaria anomala group, for which the genus Anomalobaria is introduced (type A. anomala), Lobarina (type L. scrobiculata), Ricasolia (type R. amplissima; syn.: Dendriscocaulon), the Sticta wrightii group, for which the genus Dendriscosticta is introduced (type D. wrightii), the Lobaria peltigera group, for which the genus Yoshimuriella is introduced (type Y. fendleri), and Lobariella (type L. crenulata; syn: Durietzia nom. illeg.). Pseudocyphellaria s. lat. comprises four lineages, each of which having genus-level names available: Crocodia (type C. aurata), Parmostictina (type P. hirsuta), Podostictina (type P. endochrysoides), and Pseudocyphellaria (type P. crocata). The Pseudocyphellaria anomala group (Anomalobaria) comes out sister to Lobaria s. str., whereas Sticta s. lat. forms two unrelated lineages, Sticta s. str. (type S. sylvatica) and the S. wrightii group (Dendriscosticta), which is closely related to Lobariella and the Lobaria peltigera group (Yoshimuriella). Although these twelve clades can be organized into three larger clades that largely correspond to the traditional genera Lobaria, Pseudocyphellaria, and Sticta, the clade support for Pseudocyphellaria s. lat., as well as the distribution of morpho-chemical characters over the topology, does not favour such a conclusion. In particular, the most relevant characters traditionally used to separate these genera, pseudocyphellae and/or cyphellae, are found in at least two of the three larger clades (some species of Sticta having pseudocyphellae rather than cyphellae). The strongly supported Lobaria s. lat. clade includes species with and without cyphellae and pseudocyphellae (both on the lower side), which defies the traditional classification using these characters.

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Section: The Lichenologist 216mentioning

confidence: 97%

Phylogeny of the Lobariaceae (lichenized Ascomycota: Peltigerales), with a reappraisal of the genus Lobariella

2013

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“…Character scores in the morphological data matrix (table 4) are derived from specimen-based studies conducted by J. Miadlikowska and descriptions from the following publications: Bitter (1909), Vainio (1915), Santesson (1944), Thomson (1955Thomson ( , 1979, Hale (1957), Wetmore (1960), Lindhal (1962), Henssen (1963), Yoshimura (1971), James and Henssen (1976), Vitikainen (1985Vitikainen ( , 1987Vitikainen ( , 1994aVitikainen ( , 1994b, James and White (1987), White and James (1987b), Galloway (1988), Swinscow and Krog (1988), Holtan-Hartwig (1988, Ott (1988), Hastings (1994, 1995), Goward et al (1994Goward et al ( , 1995, Stenroos et al (1994), Kondratyuk and Galloway (1995), Miadlikowska (1998), Martínez (1999). Most of the characters included in this matrix are routinely used for the determination and description of Peltigera species.…”

Section: Morphological Charactersmentioning

confidence: 99%

“…Data for the outgroups and Peltigera taxa that are rare or insufficiently known (i.e., rarely collected) were taken from the following literature and unpublished sources: Wetmore (1960), Kurokawa et al (1966), Yoshimura (1971), Ohlsson (1973), Maass (1975aMaass ( , 1975b, Tønsberg and Holtan-Hartwig (1983), Vitikainen (1985Vitikainen ( , 1994aVitikainen ( , 1994b, James and White (1987), James (1987a, 1987b), Galloway (1988), HoltanHartwig (1988HoltanHartwig ( , 1993, Feige et al (1989), Purvis and James 0000000000 0000000000 0000000000 0000000000 0000000120 A1A2212EG0 B10A10A0AA 001 P. monticola 2 0000000000 0000000000 0000000000 0000000000 0000000120 A1A2212EG0 B10A10A0AA 001 P. monticola 3 0000000000 0000000000 0000000000 0000000000 0000000120 A1A2212EG0 B10A10A0AA 001 P. ponojensis 2 0000000000 0000000000 0000000000 0000000000 0000000110 H1122121G0 B10M1000AH 111 P. ponojensis 3 0000000000 0000000000 0000000000 0000000000 0000000110 H1122121G0 B10M1000AH 111 P. ponojensis 1 0000000000 0000000000 0000000000 0000000000 0000000110 H1122121G0 B10M1000AH 111 P. scotteri 1 0000000000 0000000000 0000000000 0000000000 0000000110 111221Y1G0 0003100011 001 P. retifoveata 2 0000000011 0010000000 0100000000 0000000000 00000001A0 11111111E0 000E10011H 000 P. retifoveata 1 0000000011 0010000000 0100000000 0000000000 00000001A0 11111111E0 000E10011H 000 P. continentalis 0000000000 0000000000 0000000000 0000000000 0000000110 B112212130 000E101012 01? P. kristinssonii 2 0000000000 0000000000 0000000000 0000000000 0000000110 21A211E120 210120001H 01?…”

Section: Chemical Characters (Terpenoids)mentioning

confidence: 99%

Phylogenetic Revision of the GenusPeltigera(Lichen‐Forming Ascomycota) Based on Morphological, Chemical, and Large Subunit Nuclear Ribosomal DNA Data

Miądlikowska

Lutzoni

2000

International Journal of Plant Sciences

150

166

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Peltigera (Peltigerineae, lichenized Ascomycota) is one of the most widespread lichen genera incorporating bi-and trimembered associations involving fungi, green algae (cf. Coccomyxa), and cyanobacteria (cf. Nostoc). A wide range of morphological and chemical (secondary compounds) variation at both the intra-and interspecific levels is present in this genus. Compared to many other genera of macrolichens, its taxonomy, including chemotaxonomy, still remains poorly understood. Existing infrageneric classifications of Peltigera are almost exclusively based on photobiont composition of the thallus. These classifications assumed that bi-and trimembered taxa were distinct monophyletic entities. The genus Peltigera has never been the focus of a comprehensive phylogenetic study. The most recent and widely accepted subdivision of the genus into seven groups is based mainly on morphological and chemical characters. Relationships among species of Peltigera are investigated here using chemical, morphological, and large subunit nuclear ribosomal DNA (LSU nrDNA) data. We test the monophyly of these seven morpho-chemical Peltigera groups and propose a classification based on a phylogenetic approach. Data sets of 42 chemical characters (terpenoids), 31 morphological characters, and 1135 LSU nrDNA characters for 96 samples representing 38 Peltigera species, eight undescribed putative Peltigera species, and nine species from seven potentially closely related genera from Peltigerineae were subjected to maximum parsimony analyses. Morphological, chemical, and molecular analyses were carried out independently and on a combined data set. Monophyly of Peltigera, including Hydrothyria, was confirmed. The genus Hydrothyria is transferred to Peltigera and a new combination Peltigera hydrothyria Miadlikowska & Lutzoni is proposed. Eight monophyletic sections within the genus Peltigera, with high bootstrap support, are circumscribed: sections Peltigera, Polydactylon Miadlikowska & Lutzoni, Chloropeltigera Gyeln., Peltidea (Ach.) Vain., Horizontales Miadlikowska & Lutzoni, Retifoveatae Miadlikowska & Lutzoni, Phlebia Wallr., and Hydrothyriae Miadlikowska & Lutzoni. Unequivocal morphological and chemical synapomorphies for all sections except section Peltidea are recognized and presented. A key for identification of the sections is provided. In addition, a key based on four main terpenoids for determination of the chemotypes and species within section Polydactylon is included. Five terpenoids (50-54) identified on thin-layer chromatography plates for P. elisabethae and P. horizontalis chemotype I are added to the list of substances found in Peltigera. Five chemotypes, mainly from Poland and Norway, are reported from Peltigera thalli for the first time: P. malacea chemotype V, P. leucophlebia chemotype II, P. hymenina chemotypes II and III, and P. collina chemotype IV. Three main types of vein structure in Peltigera were recognized based on SEM studies.

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“…Furthermore, joined green and blue-green lobes (hereafter called chloromorph and cyanomorph, respectively, or photomorph-term introduced by Laundon, 1995-when the nature of the photobiont is not specified) or independent thalli that are chemically and/or morphologically similar except for the nature of the photobiont, have been reported for all these genera (see Henssen, 1976, andJahns, 1988, for a review). Alternative photomorphs can differ in their growth form (e.g., Lobaria, Jordan, 1972, andSticta, Galloway, 1994); their morphology (e.g., Peltigera aphthosa-group; HoltanHartwig, 1993;Vitikainen, 1994;Goward et al, 1995;and Pseudocyphellaria, Renner and Galloway, 1982;Galloway, 1988), their anatomy (e.g., P. venosa ;Ott, 1988), their chemistry (e.g., Nephroma arcticum; Tønsberg and HoltanHartwig, 1983; see also Renner, 1982), their habitat preferences (White and James, 1987) and the cytology of the actual interactions between symbionts (Honegger, 1982(Honegger, , 1985. Whether all these differences are induced by the alternative photobiont or whether some of these reflect the presence of two genetically distinct mycobionts is not clear.…”

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confidence: 99%

Characterization of Mycobionts of Photomorph Pairs in the Peltigerineae (Lichenized Ascomycetes) Based on Internal Transcribed Spacer Sequences of the Nuclear Ribosomal DNA

Goffinet

Bayer

1997

Fungal Genetics and Biology

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Goffinet, B., and Bayer, R. J. 1997. Characterization of mycobionts of photomorph pairs in the Peltigerineae (lichenized ascomycetes) based on internal transcribed spacer sequences of the nuclear ribosomal DNA. Fungal Genetics and Biology 21, 228-237. The The ''one fungus-two photomorphs'' hypothesis suggests that certain lichenized fungi can establish a symbiotic relationship with either a eukaryotic or a prokaryotic photobiont. Such pairs of photomorphs are well know from cephalodiate Peltigerineae. Using an ascomycete-specific primer we amplified the internal transcribed spacer region of the nrDNA repeat of the mycobiont from total ''lichen DNA'' extracts of Peltigera malacea, photomorphs of P. aphthosa, P. britannica, and P. leucophlebia, Nephroma expallidum, and photomorphs of N. arcticum. Comparisons of 5.8S sequences suggest that the sequences obtained belong to the mycobiont and thus, that the ascomycetespecific primer is adequate for amplifying fungal DNA from total lichen-DNA extracts. The strict identity of nucleotide sequences of the internal transcribed spacer region of the nrDNA repeat between joined-photomorphs supports the one fungus-two photomorphs hypothesis. Photomorphs may thus primarily reflect phenotypic plasticity of photomorphic fungi in response to changing environmental conditions. The cyanomorph recently reported for P. leucophlebia is shown to be based on a misidentified specimen of P. aphthosa. Comparisons of the ITS sequences further supports recognizing P. aphthosa, P. britannica, and P. leucophlebia at the species rather than the infraspecific level. r 1997 Academic Press

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Studies in Pseudocyphellaria (lichens) II. Ecuadorean species

Cited by 56 publications

References 13 publications

Phylogeny of the Lobariaceae (lichenized Ascomycota: Peltigerales), with a reappraisal of the genus Lobariella

Phylogeny of the Lobariaceae (lichenized Ascomycota: Peltigerales), with a reappraisal of the genus Lobariella

Phylogenetic Revision of the GenusPeltigera(Lichen‐Forming Ascomycota) Based on Morphological, Chemical, and Large Subunit Nuclear Ribosomal DNA Data

Characterization of Mycobionts of Photomorph Pairs in the Peltigerineae (Lichenized Ascomycetes) Based on Internal Transcribed Spacer Sequences of the Nuclear Ribosomal DNA

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