Spore morphology and ultrastructure of Dennstaedtiaceae from Paranaense Phytogeographic Province I.: genus Dennstaedtia

Yañez, Agustina; Márquez, Gonzalo Javier; Morbelli, Marta A.

doi:10.1016/j.revpalbo.2015.06.012

Cited by 7 publications

(5 citation statements)

References 25 publications

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“…Spore morphology by light microscope (LM), scanning electron microscope (SEM), and TEM has proven to be helpful in taxonomy and classification of many fern species (Dettmann & Clifford, 1991; Giacosa, 2019; Giacosa, Morbelli, & Giudice, 2012; Gureyeva & Kuznetsov, 2015; Lee & Park, 2014; Marquez, Morbelli, & Giudice, 2009; Yañez, Marquez, & Morbelli, 2016; Zaman et al, 2019). Several studies deal with the spores of Asplenium .…”

Section: Introductionmentioning

confidence: 99%

Spore morphology and leaf epidermal anatomy as a taxonomic source in the identification of Asplenium species from Malakand division Pakistan

Shah

Ahmad

Zafar

et al. 2020

Microscopy Res & Technique

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Several studies have demonstrated the usefulness of leaf epidermal, and spore morphological characters in the taxonomy of genus Asplenium. However, works on the Pakistani species of Asplenium are not existent. With the objective to verify the efficacy of leaf epidermal and spore morphological traits, the leaf epidermis and spore morphology in nine Asplenium species occurring in Malakand division was studied. The spores were studied under light microscope (LM) and scanning electron microscope (SEM), whereas for leaf epidermal anatomy, the LM was used. The spores are monolete, ellipsoidal in shape, the equatorial and polar diameter ranges between 28.3 and 50.2 × 27.6 and 45.8 μm. The exospore thickness varied from 0.5 to 3.8 μm. The perispore is 0.8-3.5 μm thick, ornamented, and morphologically variable. The spores characters specifically the perispore ornamentation are useful in distinguishing species within the genus. The irregular spore shape and unusual development of perispore wall surface characterize aborted spores in the species of Asplenium × alternifolium. The most informative quantitative characters appeared to be length and width of epidermal cells, and length and width of stomata were useful to distinguish species. The most significant qualitative characters to distinguish species were the anticlinal wall pattern. Our study has shown that considerable variations exist in the leaf epidermis of Asplenium species, at least some of which has taxonomic significance. We confirmed the prevalent taxonomic value of stomatal and epidermal cells traits. The leaf epidermal anatomy and spore morphological features showed to be a good source of information for taxonomy of the genus Asplenium.

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Section: Introductionmentioning

confidence: 99%

Spore morphology and leaf epidermal anatomy as a taxonomic source in the identification of Asplenium species from Malakand division Pakistan

Shah

Ahmad

Zafar

et al. 2020

Microscopy Res & Technique

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“…Secondly, their base chromosome numbers are very different, with Dennstaedtia (group Patania) having 46 and 47, and Hypolepis 52 (Schwartsburd et al 2020). Finally, the sporangia and spores of D. aculeata are perfectly well-developed, with similar morphology to those of D. cicutaria (Yañez et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Beware my spines: a new spiny fern (Dennstaedtia, Dennstaedtiaceae) from central and western Amazonia

2022

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A new spiny fern belonging to the genus Dennstaedtia is described from Brazilian and Peruvian Amazonia. Dennstaedtia aculeata (sp. nov.) is the third spiny species known for the genus, and the first in South America. It is compared with another Neotropical spiny Dennstaedtia, D. spinosa. We also present images, illustrations and a distribution map of the specimens, and discuss the habitat preference of the species towards nutrient-richer soils and spinescence in the family.

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“…Mett., and Pteridium arachnoideum (Kaulf.) Maxon (Lugardon 1974, Giudice et al 2006, Yañez et al 2016a. This resembles structures found on the pollen grains of angiosperms known as Ubisch bodies (Morbelli 1977, Lugardon 1981.…”

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confidence: 80%

“…Recent studies carried out in spores of Dennstaedtia, Pteridium, Microlepia and Hypolepis Bernh. (Giudice et al 2006, Yañez et al 2016a from South America have the same exospore type.…”

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confidence: 90%

Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeografic Province that produce monolete spores and its systematic implications (I): Blotiella lindeniana , Histiopteris incisa and Paesia glandulosa

Yañez

Márquez

Morbelli

2017

An. Acad. Bras. Ciênc.

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The genera of Dennstaedtiaceae have sporophytes with very different morphological characteristics between each other, and this feature has made difficult the systematic circumscription of the family. This reason makes necessary the study of new characters that allow a better understanding of the relations within the group. The spore morphology and wall structure of Blotiella lindeniana, Histiopteris incisa and Paesia glandulosa from the Paranaense Phytogeographic Province were studied using light microscope, and scanning and transmission electron microscope. The exospore has two layers and, according to the species, the exospore surface bears pila, echinae, verrucae, bacula and tubercles. The perispore has two or three layers and its surface is psilate, baculate or rugulate. The variability found in the sculpture of the spores and their stratification and ultrastructure of perispore reflects the morphological differences observed in the sporophyte of the species studied. Additionally, while the stratification and ultrastructure of the exospore is shared by the Dennstaedtiaceae species, their ornamentation could be a character to distinguish species into the clade "hypolepidoide". The finding of spores with similar characteristics in phylogenetically unrelated families allows us to suggest that palynological features do not have an evolutionary value to establish relationships between groups above the genus level.

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Spore morphology and ultrastructure of Dennstaedtiaceae from Paranaense Phytogeographic Province I.: genus Dennstaedtia

Cited by 7 publications

References 25 publications

Spore morphology and leaf epidermal anatomy as a taxonomic source in the identification of Asplenium species from Malakand division Pakistan

Spore morphology and leaf epidermal anatomy as a taxonomic source in the identification of Asplenium species from Malakand division Pakistan

Beware my spines: a new spiny fern (Dennstaedtia, Dennstaedtiaceae) from central and western Amazonia

Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeografic Province that produce monolete spores and its systematic implications (I): Blotiella lindeniana , Histiopteris incisa and Paesia glandulosa

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