Studies onLeucodon (Leucodontaceae, Musci) and related genera in East Asia

Akiyama, Hiroyuki

doi:10.1007/bf02492838

Cited by 7 publications

(26 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because plants ofLeucodon usually occur in small, dense clumps on tree trunks and each clump represents a single individual or genet (Akiyama, 1988), it is not difficult to distinguish individuals. But to ensure that the same genet Enzyme electrophoresis-All plants gathered from natural populations were refrigerated (4 C) in plastic bags for 1-2 weeks prior to electrophoresis.…”

Section: Methodsmentioning

confidence: 99%

“…Soltis et al (1983) with slight modification (Akiyama, 1991). To collect plants growing high on tree trunks, I used a small sickle attached to a fishing rod.…”

Section: Methodsmentioning

confidence: 99%

“…On the other hand, section Leucodon is defined by the lack of these two features (Akiyama, 1988). Of the five species, L. atrovirens, L. luteus, L. sapporensis, and L. nipponicus are representatives of section Macrosporiella of subgenus Leucodon, whereas Leucodon temperatus belongs to the other section Leucodon ofthe same subgenus.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Allozyme variability within and among populations of the epiphytic mossLeucodon (Leucodontaceae: Musci)

Akiyama

1994

American J of Botany

Self Cite

View full text Add to dashboard Cite

Enzyme electrophoresis was used to estimate genetic variability within and among populations of five species of the genus Leucodon (L. atrovirens, L. luteus, L. nipponicus, L. sapporensis, and L. temperatus). All of these perennial, dioecious plants are epiphytic on tree trunks and produce numerous spores that are released in winter. Gene diversity within populations (HS) was low (0.070) in L. nipponicus, which grows in disturbed habitats, and high (0.169–0.202) in the other four species, which inhabit stable environments. Gene diversity between populations relative to total diversity (GST) was low in L. temperatus (0.042) and L. luteus (0.043), suggesting that extensive gene flow occurs among populations. GST was moderate in L. sapporensis (0.104) and L. atrovirens (0.114); these values are still less than those previously reported for terrestrial mosses. Since epiphytes could disperse their spores effectively by the wind, low genetic divergence among populations may be related to the epiphytic habit of the species. On the other hand, high GST value (0.208) was found in L. nipponicus. It is probably explained by the genetic differentiation of populations by genetic drift, for the species forms geographically and ecologically isolated populations with small number of individuals. We also observed incongruity between morphological and genetic similarity among species.

show abstract

Section: Methodsmentioning

confidence: 99%

“…Soltis et al (1983) with slight modification (Akiyama, 1991). To collect plants growing high on tree trunks, I used a small sickle attached to a fishing rod.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Allozyme variability within and among populations of the epiphytic mossLeucodon (Leucodontaceae: Musci)

Akiyama

1994

American J of Botany

Self Cite

View full text Add to dashboard Cite

show abstract

“…The present study suggests that other taxa than those included by Manuel (1974) should be considered in this context (Figs 4-6, 7A, B). In addition, the suggestions for a reclassification of some genera treated by Manuel (1974) made by Buck (1980b) and Akiyama (1986Akiyama ( , 1987Akiyama ( , 1988a indicate that there are still many problems to be solved. Bryolawtonia, which was included in Manuel's (1974) Bestia, and Pterogonium often appear together in my analyses, but since Bestia longipes (Sull.…”

Section: Hypnineae (Hypnales)mentioning

confidence: 96%

Higher taxonomic level relationships among diplolepidous pleurocarpous mosses — a cladistic overview

Hedenäs¹

1995

Journal of Bryology

View full text Add to dashboard Cite

The relationships between ·66 representative pleurocarpous mosses were studied using cladistic analyses. Ten different analyses were perfoqned with different outgroups or single taxa deleted to check the stability of the analyses (all resulted in too manYl!ees for other tests· of stability to be applicable). Another three analyses were performed with different sets of characters excluded to see if some kinds of characters were more important than the others for the results of the analyses. The study suggests that the Fleischer-Brotherus system has support for large parts of the classification, although the order Isobryales (Leucodontales), in the sense of Brotherus, is a grade taxon. More recent ideas about the classification of the Isobryales, which are partly based on the differences between perfect and reduced peristomes, are not supported. Jmportant and relatively stable clades are formed by (1) the species of the Amblystegiaceae (s.l.) plu~Thaidium and some members of the Hypnaceae, (2) the members of the Plagiotheciaceae (in a relatively wide sense) and (3) the Hookeriales-Sematophyllaceae-Garovagliodeae.Two of the analyses indicate that the last clade may be related t?·the Ptychomniaceae. The families· Brachytheciaceae, Hypnaceae and Thuidiaceae, in their usual sense, appear to be polyphyletic. Characters of the sporophyte and perichaetia were in general more important for the results of the analyses than characters of the vegetative gametophyte, due to their more consistent patterns of variation among the taxa. However, in some cases, such as the definition of the Plagiotheciaceae clade, vegetative gametophytic features proved to be more important than other characters.

show abstract

“…However, it shows considerable variation in morphology among species; some are characterized by leaves with a single costa and deeply immersed capsules among the perichaetial leaves, while others have a very short, sometimes scarcely developed, double-forked costa and more or less exerted capsules. Species having the former features show a morphology characteristic of the Cryphaeaceae, while species with the latter features show a morphology characteristic of the Leucodontaceae, and this is the reason why the genus has been variously classified both in the Cryphaeaceae (Brotherus 1925, Manuel 1982 or Leucodontaceae (Vitt 1984, Akiyama 1988a, 1994. In addition, Buck (1980) proposed to classify Forsstroemia in the Leptodontaceae, and several authors have followed his treatment (Buck andVitt 1986, Stark 1987).…”

Section: Familial Affinity Of Forsstroemiamentioning

confidence: 99%

Molecular Phylogeny of the Suborder Leucodontineae (Musci; Leucodontales) Inferred from rbcL Sequence Data

et al. 2000

Self Cite

View full text Add to dashboard Cite

The phylogeny of the Leucodontaceae and its allies (pleurocarpous Diplolepidae) was inferred from chloroplastcoded rbcL sequence data (1324bp on average). Our analyses indicate (1) that Antitrichia is distantly related to the other members of Leucodontaceae and should be excluded from the family, (2) that Cryphaeaceae form a monophyletic clade, not with Anomodontaceae and Leptodontaceae, but with Leucodontaceae, refuting the placement of Leucodontaceae and Cryphaeaceae in different superfamilies, (3) that ForWmemiia, variously classified in Leucodontaceae, Cryphaeaceae or Leptodontaceae, forms a monophyletic clade with Neckera (Neckeraceae), and (4) that the presumed monophyly of Anornodon and that of Anomodontaceae are not supported.

show abstract

Studies onLeucodon (Leucodontaceae, Musci) and related genera in East Asia

Cited by 7 publications

References 1 publication

Allozyme variability within and among populations of the epiphytic mossLeucodon (Leucodontaceae: Musci)

Allozyme variability within and among populations of the epiphytic mossLeucodon (Leucodontaceae: Musci)

Higher taxonomic level relationships among diplolepidous pleurocarpous mosses — a cladistic overview

Molecular Phylogeny of the Suborder Leucodontineae (Musci; Leucodontales) Inferred from rbcL Sequence Data

Contact Info

Product

Resources

About