Palynology of selected species of Fissidens (Hedw.)

Caldeira, Isabela Crespo; Luizi-Ponzo, Andréa Pereira; Esteves, Vania Goncalves

doi:10.1007/s00606-012-0714-5

Cited by 9 publications

(7 citation statements)

References 9 publications

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“…Present study agrees with Sorsa and Koponen (1973), Vitt and Hamilton (1974), Boros and Járai-Komlódi (1975), Olesen and Mogensen (1978), Brown and Lemmon (1988), Blackmore and Barnes (1991), Estebanez et al (1997), Barth (1998, 1999), Khoshravesh and Kazempour (2007), Potoglu and Savaroglu (2007), Savaroglu et al (2007), Savaroglu and Potoglu (2008), Medina et al (2009), Aşçı et al (2010), and Caldeira et al (2013) that spore morphology in the Orthotrichaceae family and its relatives show distinctive properties that are important for taxonomic studies.…”

Section: Measurementssupporting

confidence: 90%

“…It is also a potential source of information regarding the evolutionary processes, which may lead to the definition of biological or taxonomic boundaries (Carrion et al 1995). In some recent papers (Sorsa and Koponen 1973, Vitt and Hamilton 1974, Boros and Járai-Komlódi 1975, Olesen and Mogensen 1978, Brown and Lemmon 1988, Blackmore and Barnes 1991, Gambardella et al 1994, Carrion et al 1995, Estebanez et al 1997, Luizi-Ponzo and Barth 1998, 1999, Khoshravesh and Kazempour Osaloo 2007, Savaroglu and Potoglu Erkara 2008, Medina et al 2009, Aşçı et al 2010, Caldeira et al 2013, the intine structure and the spore external morphology have proven useful in characterizing moss taxa at the generic and specific levels. There is, however, still required research in this area.…”

Section: Introductionmentioning

confidence: 99%

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Spore morphology of some Orthotrichaceae Arn. species (Bryophyta) from Turkey

Savaroğlu

2018

Bangladesh J. Bot.

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The spores of Orthotrichum lyellii Hook & Taylor, O. speciosum Nees, O. affine Schrad. ex Brid., O. rupestre Schleich. ex Schwagr., O. anomalum Hedw. and O. cupulatum Hoffm. ex Brid. showed the apertural region consists of a leptoma in their spores. Two spore types are characterized by their surface ornamentation, reflecting the species’ taxonomic relationships. The spore shape of all the species is spheroid. The spore size ranged from 7 to 23 μm in the genus Orthotrichum. While the surface ornamentation is verrucate in O. speciosum and O. affine, it is gemmate in O. lyellii, O. rupestre, O. anomalum and O. cupulatum. The spore walls of the family Orthotrichaceae include sclerine (the distinction between exine and perine might be difficult to define) and intine. The examined moss species belong to two habitat types: corticolous and saxicolous. The taxonomic and ecological implications of the genus Orthotrichum were discussed on the basis of its spore morphology.

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Section: Measurementssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Spore morphology of some Orthotrichaceae Arn. species (Bryophyta) from Turkey

Savaroğlu

2018

Bangladesh J. Bot.

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“…These features are similar to those found for the species of the present study. However, it is worth noting that, according to Erdtman (1965), the exine is the stratum responsible for spore ornamentation, while the present study found the perine to be responsible, which is consistent with the observations of McClymont & Larson (1964), Olesen & Mogensen (1978), Neidhart (1979) and Brown & Lemmon (1980;1984a;1988), and more recent papers on moss spores (Caldeira et al 2013;Rodrigues & Luizi-Ponzo 2015;Savaroglu 2015;Savaroglu et al 2017).…”

Section: Discussionsupporting

confidence: 93%

Complex sporoderm structure in bryophyte spores: a palynological study of Erpodiaceae Broth.

Luizi-Ponzo

Silva-e-Costa

2019

Acta Bot. Bras.

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Palynological studies of bryophytes are critical for evaluating the taxonomic relevance of their spores. They also provide important support to paleoecological investigations that, usually, treat bryophytes as a whole, which does not permit the evaluation of specific functional traits of a special taxonomic unit. The present study investigated the morphology and ultrastructure of spores of five species of Erpodiaceae (Bryophyta), and assessed the implications for taxonomy and the recognition of spores of past records. Erpodiaceae includes corticolous and saxicolous plants that are widely distributed throughout tropical and temperate regions. The spores were found to be isomorphic and apolar with a subcircular amb, granulate, inaperturate. The sporoderm possesses a perine, an exine and a stratified intine. The perine is largely responsible for spore surface ornamentation. The occurrence of exine projections, in isolation or sustaining the elements of the perine, characterizes sporoderm structure with features similar to that of a semitectum, a distinctive characteristic that has not been reported previously for bryophyte spores.

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“…Analyses made under TEM revealed that the exine is divided into the nexine, an inner layer, and the sexine, an outer layer. Similar exine configurations have been observed for spores of both mosses and liverworts (Heckman 1970;Steinkamp & Doyle 1979;Brown & Lemmon 1988;Estébanez et al 1997;Yano & Luizi-Ponzo 2006;Rocha et al 2008;Caldeira et al 2013;Brown et al 2015;Silva-e-Costa 2015;Rodrigues & Luizi-Ponzo 2015).…”

Section: Sporoderm Structure and Surface Ornamentationsupporting

confidence: 70%

Spores of Plagiochila (Dumort.) Dumort.: the taxonomic relevance of morphology and ultrastructure

Silva-e-Costa

Luizi-Ponzo

2019

Acta Bot. Bras.

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Plagiochilaceae is a family of leafy liverworts that are distributed worldwide. It is of great importance due to its taxonomic and ecological implications among bryophytes. Most species of the family belong to the genus Plagiochila, but there is no consensus regarding its infrageneric circumscription. There have been few palynological studies involving Plagiochilaceae and Plagiochila. Here, we describe the spore morphology of seventeen species of Plagiochila and discuss the taxonomic value of palynological characters for these taxa. The spores were processed by standard palynological techniques and analyzed using light and electron microscopy. The spores were found to be apolar, spheroidal, released monads that vary in size from 13µm to 58µm (small to large size). The sporoderm comprises an intine (stratified), a nexine, and a sexine. The spore surface is ornamented with granules that vary in shape and morphology, thus allowing the studied species to be grouped into four spore types: regular and delicate granulate, irregular and coarse granulate, long granules with flattened apices, and long and straight granules. Hierarchical cluster analysis revealed five different groups of species, evidencing the importance of spore information for taxonomic and phylogenetic studies.

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Palynology of selected species of Fissidens (Hedw.)

Cited by 9 publications

References 9 publications

Spore morphology of some Orthotrichaceae Arn. species (Bryophyta) from Turkey

Spore morphology of some Orthotrichaceae Arn. species (Bryophyta) from Turkey

Complex sporoderm structure in bryophyte spores: a palynological study of Erpodiaceae Broth.

Spores of Plagiochila (Dumort.) Dumort.: the taxonomic relevance of morphology and ultrastructure

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