Spore morphology of some Bruchiaceae species (Bryophyta) from Brazil

Luizi‐Ponzo, Andréa Pereira; Barth, Ortrud Monika

doi:10.1080/00173139809362670

Cited by 18 publications

(13 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Estes recobriram densamente a superfície do esporo não permitindo a observação da exina. Resultado semelhante a este foi encontrado por Luizi-Ponzo & Barth (1998) quando as autoras analisaram a morfologia dos esporos de diferentes famílias de musgos da subclasse Bryidae coletados na Estação Científica Ferreira Penna, em Caxiuanã (PA). Dentre as espécies estudadas, as autoras analisaram os esporos de Sematophyllum subsimplex e descreveram a superfície como granulóide.…”

Section: Discussionunclassified

Morfologia dos esporos de Sematophyllaceae Broth. ocorrentes em três fragmentos de Mata Atlântica, no Rio de Janeiro, Brasil

Caldeira

Esteves

Luizi-Ponzo³

2009

Rev. bras. Bot.

View full text Add to dashboard Cite

-(Spores morphology from Sematophyllaceae Broth. from three fragments of Mata Atlântica, in Rio de Janeiro, Brazil). In the present work the spores of seven species of the family Sematophyllaceae Broth. (Bryophyta) from three areas of Mata Atlântica were analyzed. For the spores' external morphology analysis, the direct method in glycerined gelatin was used and for the measurements the method of acetolysis was used. The largest and smaller diameters (in polar view) and the thickness of the wall were measured. The analysis was carried under optical microscope and scanning electronic microscope. The spores are isomorphic, from small to medium size, heteropolars, of subcircular amb, with proximal apertural region and granulated surface. The apertural region is irregular. The variations found between the spores of the different species are related to the size of the spores and the distribution of the trimming elements.Key words -Bryophyta, Mata Atlântica, Sematophyllaceae, spores RESUMO -(Morfologia dos esporos de Sematophyllaceae Broth. ocorrentes em três fragmentos de Mata Atlântica, no Rio de Janeiro, Brasil). No presente trabalho foram analisados os esporos de sete espécies da família Sematophyllaceae Broth. (Bryophyta) ocorrentes em três áreas de Mata Atlântica. Para análise da morfologia externa dos esporos, utilizou-se o método direto em gelatina glicerinada e para as medidas foi utilizado o método de acetólise. Foram medidos os diâmetros maior e menor (em vista polar) e a espessura da parede. As análises foram realizadas sob microscópio de luz e microscópio eletrônico de varredura. Após a realização das medidas, realizou-se a análise estatística e estas foram apresentadas em tabelas. Os esporos são isomórficos, de tamanho pequeno a médio, heteropolares, de amb subcircular, com região apertural proximal e superfície granulada. A região apertural é irregular. As variações encontradas entre os esporos das diferentes espécies estão relacionadas ao tamanho dos esporos e à distribuição dos elementos de ornamentação.Palavras-chave -Bryophyta, esporos, Mata Atlântica, Sematophyllaceae

show abstract

Section: Discussionunclassified

Morfologia dos esporos de Sematophyllaceae Broth. ocorrentes em três fragmentos de Mata Atlântica, no Rio de Janeiro, Brasil

Caldeira

Esteves

Luizi-Ponzo³

2009

Rev. bras. Bot.

View full text Add to dashboard Cite

show abstract

“…In some recent papers (Estébanez, Alfayate & Ron, 1997;Luizi-Ponzo & Barth, 1998, 1999Du, Wang & Zhang, 2000;Estébanez, Yamaguchi & Deguchi, 2006;Savaroglu et al, 2007;Savaroglu & Potoglu Erkara, 2008), the intine structure and the spore external morphology have proved to be useful to characterize moss taxa at the generic and specific levels.…”

mentioning

confidence: 99%

“…Some examples include the characterization of species belonging to the genera Encalypta (Vitt & Hamilton, 1974), Plagiothecium (Ireland, 1987), Pterygoneuron (Carrió n, Cano & Guerra, 1995) or Bryum , and even genera within families: Bartramiaceae (Hirohama, 1977), Bruchiaceae (Luizi-Ponzo & Barth, 1998) or Brachytheciaceae (Potoglu .…”

mentioning

confidence: 99%

On the presence of dimorphic spores inOrthotrichum affine(Bryopsida, Orthotrichaceae)

Medina

2009

Journal of Bryology

View full text Add to dashboard Cite

“…Sim-Sim et al (2017) reconstructed the phylogeny of this genus using morphological and anatomical characters, and indicated six species for the genus: Amphidium lapponicum, A. mougeotii, A. tortuosum, A. californicum, A. curvipes, and A. asiaticum. Palynological studies dealing with bryophyte species have made important advances since the 1980s regarding the taxonomy, ecology, and phylogeny of the group (Mogensen 1981;Luizi-Ponzo & Barth 1998;1999;Luizi-Ponzo & Melhem 2006a;b;Caldeira et al 2006;2009;Rocha et al 2008;Savaroglu & Erkara 2008;Alfayate et al 2013;Rodrigues & Luizi-Ponzo 2015;Silva-e-Costa et al 2017). However, studies on Amphidium have focused mostly on morphological and molecular characters (Rooy 1992;Goffinet et al 1998;Stech 1999;Farge et al 2000;2002;Frahm et al 2000;Tsubota et al 2003;Hedderson et al 2004;Stech 2004;Stech & Frey 2008;Stech et al 2012;Sim-Sim et al 2017), with palynological information on its species remaining rare (Hirohama 1977) or only briefly summarized in some taxonomic studies (Rooy 1992;Gradstein et al 2001;Allen 2002), in which they were described as "subrounded", "small", "apparently ornamented", "slightly papillose" or "having a smooth sporoderm".…”

Section: Introductionmentioning

confidence: 99%

Palynology of Amphidium Schimp. (Amphidiaceae M. Stech): can spore morphology circumscribe the genus?

Passarella

Luizi-Ponzo

2019

Acta Bot. Bras.

View full text Add to dashboard Cite

Amphidium Schimp. is characterized by cushion-forming erect primary stems, linear-lanceolate leaves, and gymnostome capsules. The phylogenetic position of Amphidium is uncertain, with the genus having been variously included in Zygodontaceae Schimp., Rhabdoweisiaceae Limpr., Orthotrichaceae Arn. and Amphidiaceae M. Stech. A palynological investigation was performed of the three species of the genus that occur in the Americas: Amphidium lapponicum (Hedw.) Schimp., Amphidium mougeotii (Bruch & Schimp.) Schimp., and Amphidium tortuosum (Hornsch.) Cufod. Spores were observed and measured for greatest diameter under light microscopy both before and after acetolysis. Non-acetolyzed spores were observed under scanning electron microscopy to assess surface ornamentation of the sporoderm. All spores observed were smaller than 20 µm and heteropolar, with surface ornamentation reflecting a combination of different elements, such as gemmae, rugulae and perforations. The palynological characteristics observed here suggest that the genus Amphidium, and thus its contained species, be placed in their own family.

show abstract

Spore morphology of some Bruchiaceae species (Bryophyta) from Brazil

Cited by 18 publications

References 13 publications

Morfologia dos esporos de Sematophyllaceae Broth. ocorrentes em três fragmentos de Mata Atlântica, no Rio de Janeiro, Brasil

Morfologia dos esporos de Sematophyllaceae Broth. ocorrentes em três fragmentos de Mata Atlântica, no Rio de Janeiro, Brasil

On the presence of dimorphic spores inOrthotrichum affine(Bryopsida, Orthotrichaceae)

Palynology of Amphidium Schimp. (Amphidiaceae M. Stech): can spore morphology circumscribe the genus?

Contact Info

Product

Resources

About