Notes on leaf micromorphology of the rare herbaceous bamboo Buergersiochloa bambusoides Pilg. (Olyreae, Poaceae) from New Guinea and its taxonomic implications

Lima, Jamile Fernandes; Leite, Kelly Regina Batista; Clark, Lynn G.; Oliveira, Reyjane Patrícia de

doi:10.3897/phytokeys.172.59506

Cited by 5 publications

(4 citation statements)

References 33 publications

(55 reference statements)

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“…Sister to Parianinae, the Olyrinae have a crown date of 33.97 Ma. With the transfer of the three endemic Cuban genera to Buergersiochloinae (Lima et al, 2020, 2021), the subtribe is well‐supported as monophyletic in molecular analyses (Ferreira, 2019; de Carvalho, 2021; Oliveira et al, 2020a). The subtribe is Neotropical except for one species of Olyra L. (25 spp.…”

Section: Discussionmentioning

confidence: 99%

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Grasses through space and time: An overview of the biogeographical and macroevolutionary history of Poaceae

Gallaher

Peterson

Soreng

et al. 2022

J of Sytematics Evolution

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Grasses are widespread on every continent and are found in all terrestrial biomes. The dominance and spread of grasses and grassland ecosystems have led to significant changes in Earth′s climate, geochemistry, and biodiversity. The abundance of DNA sequence data, particularly chloroplast sequences, and advances in placing grass fossils within the family allows for a reappraisal of the family′s origins, timing, and geographic spread and the factors that have promoted diversification. We reconstructed a time‐calibrated grass phylogeny and inferred ancestral areas using chloroplast DNA sequences from nearly 90% of extant grass genera. With a few notable exceptions, the phylogeny is well resolved to the subtribal level. The family began to diversify in the Early–Late Cretaceous (crown age of 98.54 Ma) on West Gondwana before the complete split between Africa and South America. Vicariance from the splitting of Gondwana may be responsible for the initial divergence in the family. However, Africa clearly served as the center of origin for much of the early diversification of the family. With this phylogenetic, temporal, and spatial framework, we review the evolution and biogeography of the family with the aim to facilitate the testing of biogeographical hypotheses about its origins, evolutionary tempo, and diversification. The current classification of the family is discussed with an extensive review of the extant diversity and distribution of species, molecular and morphological evidence supporting the current classification scheme, and the evidence informing our understanding of the biogeographical history of the family.

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Section: Discussionmentioning

confidence: 99%

“…The Parianinae + Olyrinae clade (stem age 42.61 Ma, crown age 40.27 Ma) is sister to the Buergersiochloinae and is supported by the shared presence of crenate (olyroid) and cruciform silica bodies (Lima et al, 2020(Lima et al, , 2021. The less diverse Parianinae has a crown date of 11.37 Ma.…”

Section: Anomochlooideae Pharoideae and Puelioideae (Cdt)mentioning

confidence: 99%

Grasses through space and time: An overview of the biogeographical and macroevolutionary history of Poaceae

Gallaher

Peterson

Soreng

et al. 2022

J of Sytematics Evolution

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“…[27] showed the presence of silica bodies on both adaxial and abaxial surfaces of leaf epidermis of Koeleria macrantha. Phytoliths give significant taxonomic information due to their consistent shape within species [46,48,71,[89][90][91][92][93]. [71] distinguished Arundo donax and Phragmites karka based on epidermal patterning of leaves [48].…”

Section: Plos Onementioning

confidence: 99%

Phytolith profile of Acrachne racemosa (B. Heyne ex Roem. & Schult.) Ohwi (Cynodonteae, Chloridoideae, Poaceae)

et al. 2022

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Acrachne racemosa (B. Heyne. ex Roem. & Schult.) Ohwi of the subfamily Chloridoideae of the family Poaceae is an economically important grass species. Grasses are characterized by deposits of silica in the cells or tissues in the form of phytoliths which protect them from various types of biotic and abiotic stresses. Owing to variable shape and specificity of morphotypes, phytolith helps in taxonomical studies, reconstruction of paleoenvironments and prediction of climate changes. The present study focussed on developing a phytolith profile of the selected species. For isolation of phytolith, Dry Ashing Method was employed, and by epidermal peeling, in-situ location of phytoliths was deciphered. In the present study, silica percentage was studied from different parts of the plant and the maximum amount was found in the leaf. Frequency and morphometric data of phytolith morphotypes from different parts of the plants were also collected and analyzed. The strongest correlation was found between phytolith types of root and culm by Pearson’s correlation coefficient supported by cluster analysis. The saddle type of phytoliths had the highest frequency in the leaf; other types of phytoliths in different parts of the plant were bilobate, blocky types, elongate types, trapezoids, triangular, cross, sinuate elongate, tabular types, globular types. Functional groups and amorphous polymorphic phases of silica were also analyzed by FTIR and XRD. It was concluded that phytolith types are controlled by parts of plant body and by anatomical and environmental factors.

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“…The SEM images of dried leaves were taken from abaxial and adaxial surfaces as well as for transverse sections. Before examining under SEM, dry leaf samples were treated with xylene for 10 min to remove epicuticular structures forming a barrier to the observation of microcharacters such as stomata, hairs, and epidermal ornaments on the leaf surfaces could be seen more clearly (Lima et al, 2021). Air-dried plant parts (root, stem, leaf, and flower) were mounted on SEM stubs using double-sided adhesive tape.…”

Section: Sem and Lm Observationsmentioning

confidence: 99%

Notes on the Newly Identified Asperula cankiriense B. Şahin & Sağıroğlu (Rubiaceae) from Turkey Based on a Light and Scanning Electron Microscopic Study

Kayabaş

Mutlu

2022

Microsc Microanal

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Micromorphological features of vegetative and reproductive organs in plants are considered important because they can be used as taxonomic characters. Asperula cankiriense B. Şahin & Sağıroğlu, commonly known as “Çankırı belumu”, belongs to the family Rubiaceae and generally occurs in gypsum steppes. This research reports for the first time the micromorphological characteristics of the vegetative and reproductive organs of A. cankiriense using light and scanning electron microscopy. Taxonomically critical diagnostic features, such as raphide crystals, presence and shape of trichomes, leaf cross-section shape, flower structure, and epidermal ornamentation, were described in detail. This study provided up-to-date information on the micromorphology of this newly described species and provided additional systematic information on A. cankiriense. New data about the species are reported here and will contribute to the knowledge about the family Rubiaceae.

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Notes on leaf micromorphology of the rare herbaceous bamboo Buergersiochloa bambusoides Pilg. (Olyreae, Poaceae) from New Guinea and its taxonomic implications

Cited by 5 publications

References 33 publications

Grasses through space and time: An overview of the biogeographical and macroevolutionary history of Poaceae

Grasses through space and time: An overview of the biogeographical and macroevolutionary history of Poaceae

Phytolith profile of Acrachne racemosa (B. Heyne ex Roem. & Schult.) Ohwi (Cynodonteae, Chloridoideae, Poaceae)

Notes on the Newly Identified Asperula cankiriense B. Şahin & Sağıroğlu (Rubiaceae) from Turkey Based on a Light and Scanning Electron Microscopic Study

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