Systematics and evolution of lycophytes and ferns

Schneider, Harald; Schuettpelz, Eric

doi:10.1111/jse.12231

Cited by 4 publications

(4 citation statements)

References 19 publications

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“…Selaginellaceae, Lycopodiaceae, and Isoetaceae form lycophytes and share many features (vascular tissue and absence of seeds) with ferns. For these reasons, they have long been collectively treated as “pteridophytes” (Christenhusz & Chase ; Schneider & Schuettpelz, ). However, ferns and lycophytes do not have flowers and fruit structures compared with angiosperms (Kramer, ).…”

Section: Introductionmentioning

confidence: 99%

Studies on the complementary relationship of surface ornamentations between megaspores and microspores of Selaginella P. Beauv. (Selaginellaceae)

Wang

Zhang

Liu

2018

Microscopy Res & Technique

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In the present study, the surface ornamentations of both megaspores and microspores of 20 species of Selaginella were studied using scanning electron microscopy. The results of the present study showed that the megaspore surface ornamentations are complementary to the corresponding microspore surface ornamentations. In detail, reticulate surface ornamentation of megaspores is complementary to granulate and baculate ornamentations of microspores; verrucate ornamentation of megaspores is complementary to scabrate ornamentation of microspores; granulate ornamentation of megaspores is complementary to verrucate-rugulate or verrucate ornamentations of microspores; verrucate-rugulate ornamentation of megaspores is complementary to spinulate, verrucate, or verrucate-rugulate ornamentations of microspores; tuberculate ornamentation of megaspores is complementary to lamellate, tuberculate or verrucate ornamentations of microspores. Complementary ornamentation between megaspores and microspores allows microspores to adhere to megaspores. Our observations support the "synaptospory" hypothesis, that is, spore surface ornamentation plays a part in keeping or bringing spores together during their dispersal in the pteridophytes. K E Y W O R D SSelaginella, spore, spore dispersal, synaptospory

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Section: Introductionmentioning

confidence: 99%

Studies on the complementary relationship of surface ornamentations between megaspores and microspores of Selaginella P. Beauv. (Selaginellaceae)

Wang

Zhang

Liu

2018

Microscopy Res & Technique

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“…Lycophyte represents a sister lineage to the euphyllophytes (ferns and seed plants) (Banks et al 2011;Bateman, 1996;Gao et al 2010;Schneider et al 2009), which is the most ancient and ecologically prominent vascular lineages of the Earth's terrestrial ora (Schuettpelz et al 2016;Sessa & Der, 2016), dating back to 392-451 million years ago (Mya) (Barba-Montoya et al 2018). This systematically distinguished plant group comprises heterospory Isoetales and Selaginellales, and homospory Lycopodiales.…”

Section: Introductionmentioning

confidence: 99%

The first homosporous lycophyte genome revealed the association between the recent dynamic accumulation of LTR-RTs and genome size variation

Tang

Wei

et al. 2023

Plant Mol Biol

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Lycophytes and euphyllophytes (ferns and seed plants) are the two surviving lineages of vascular plants.The modern lycophytes (clubmosses) are herbaceous found either heterosporous (Isoetales and Selaginellales) or homosporous (Lycopodiales). The contrasting genome size between homosporous and heterosporous plants has long been an attractive topic. Most clubmosses are the resource plants of Huperzine A (HupA) which is invaluable for treating Alzheimer's disease, but the evolutionary trajectory of whichin land plants is unexplored. To better understand these fundamental questions, the genome data of a homosporous lycophyte is urgently required. We generated the Lycopodium clavatum L. genome by applying a reformed pipeline for ltering out non-plant sequences. The obtained genome size is 2.30 Gb, distinguished in more than 85% repetitive elements of which 62% is LTR. Two whole genome duplications (WGDs) are rigorously detected. The content of LTR-RTs was more than ten times higher in homosporous lycophytes than heterosporous ones, although most appeared within one Mya. Then, we nd that the LTR-RTs' birth-death mode (a much greater birth and extremely slower death) contributes the accumulation of LTR-RTs resulting homosporous lycophyte genome expansion, while in heterosporous lycophytes, the mode is exactly the opposite. Furthermore, the ve necessary enzymes of the HupA biosynthetic pathway were identi ed in the L. clavatum genome, but absent in the other land plants. This decoded genome data will be a key cornerstone to elucidating the fundamental aspects of lycophyte biology and land plant evolution.

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“…According to Konrat et al (2011), pteridophytes refer to vascular cryptogamic plants due to the presence of vascular bundle and spore. This group consists of Lycophytes and Monilophytes (Schneider and Eric 2016). The stem stele of Lycophytes have no leaf gap, while Monilophytes are characterized by the presence of leaf gap (Mir et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Diversity, structure and composition of pteridophyte in varying habitats in Karimun Besar Island, Riau Islands Province, Indonesia

et al. 2021

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Abstract. Sofiyanti N, Iriani D, Taufik I, Sari M, Irawan A, Syauqi FM. 2021. Diversity, structure and composition of pteridophyte in varying habitats in Karimun Besar Island, Riau Islands Province, Indonesia. Biodiversitas 22: 4847-4856. Biodiversity of small islands, particularly in tropical region, always encourages scientific curiosity. Such curiosity is much greater when the small island of interest has been through various land use changes, such as in Karimun Besar Island. This island is one of thousand islands in Riau Islands Province, Indonesia and poses different land uses. However, studies on the biodiversity of flora in this island have not been recorded, including for pteridophyte or fern members. This study aimed to examine the diversity, floristic structure and composition of pteridophyte at six different study sites in Karimun Besar Island representing varying habitat conditions (i.e., primary forest, secondary forest, rubber plantation, road side, coastal area and mined land. The sampling was collected by using transect method to measure density, dominance and frequency. A total of 32 species of pteridophytes were recorded from the six study sites that belong to two divisions, Polypodiophyta (31 species) and Lycophyta (1 species). The number of species of pteridophyte varied across the six habitats. The highest number of species (21) was found in primary forest, while the lowest (9 species) was found in rubber plantation. The dominant species for each study site were Taenitis blechnoides (Pteridaceae) (rubber plantation), Dicranopteris linearis (Gleicheniaceae) (secondary forest), Sticherus truncates (Gleicheniaceae) (primary forest), Pteridium caudatum (Dennstaedtiaceae) (road side), Achrosticum aureum (Pteridaceae) (coastal area) and Nephrolepis hirsutula (Nephrolepidaceae) (mined land). The result of this study provides the first data of fern in Karimun Besar Island that support pivotal information on the biodiversity of small islands in tropical region.

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Systematics and evolution of lycophytes and ferns

Cited by 4 publications

References 19 publications

Studies on the complementary relationship of surface ornamentations between megaspores and microspores of Selaginella P. Beauv. (Selaginellaceae)

Studies on the complementary relationship of surface ornamentations between megaspores and microspores of Selaginella P. Beauv. (Selaginellaceae)

The first homosporous lycophyte genome revealed the association between the recent dynamic accumulation of LTR-RTs and genome size variation

Diversity, structure and composition of pteridophyte in varying habitats in Karimun Besar Island, Riau Islands Province, Indonesia

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