A global plastid phylogeny of the fern genus <i>Asplenium</i> (Aspleniaceae)

Xu, Ke‐Wang; Zhang, Liang; Rothfels, Carl J.; Smith, Alan Р.; Viane, Ronnie; Lorence, David H.; Wood, Kenneth R.; Chen, Cheng‐Wei; Knapp, R.; Zhou, Lin; Lu, Ngan Thi; Zhou, Xin‐Mao; Wei, Hong‐Jin; Fan, Qingxia; Chen, Sufang; Cicuzza, Daniele; Gao, Xin‐Fen; Liao, Wenbo; Zhang, Libing

doi:10.1111/cla.12384

Cited by 40 publications

(45 citation statements)

References 123 publications

(141 reference statements)

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“…PPG I, ). Based on the phylogenetic framework and exploration of morphological characters herein, and to maintain the monophyly of lineages that share diagnostic synapomorphies instead of producing homoplasy, Neolepisorus , Lemmaphyllum , Tricholepidium , Neocheiropteris , Lepidomicrosorium and Paragramma are treated as synonyms of Lepisorus ; a similar taxonomic strategy also is found in other large derived fern genera, such as Asplenium , Pteris , Diplazium and Dryopteris , that comprise lineages formerly treated as independent segregates (Zhang et al., , ; Wei et al., ; Xu et al., ).…”

Section: Discussionmentioning

confidence: 99%

Backbone phylogeny of Lepisorus (Polypodiaceae) and a novel infrageneric classification based on the total evidence from plastid and morphological data

et al. 2019

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The fern genus Lepisorus represents one of the most complicated and controversial lineages in Polypodiaceae, with about 80 species which have been classified into several separate genera, and is notorious for its taxonomic difficulty. Despite progress in recent phylogenetic studies of the family Polypodiaceae involving Lepisorus and its allies, the deep phylogenetic relationship within this group of ferns is still unresolved, and no formal infrageneric classification has been proposed. This contribution presents the most comprehensive phylogenetic analysis of the genus, with 72% species sampled, using a total-evidence approach based on eight plastid markers and ≤25 morphological characters for each species. The analyses resolve the backbone relationship and yield the most robust phylogenetic framework to date. Congruent with previous studies but with new findings, the results herein show that Lepisorus is monophyletic when Neolepisorus, Lemmaphyllum, Tricholepidium, Neocheiropteris and Lepidomicrosorium are included, as well as Lepisorus jakonensis and Paragramma. Furthermore, 17 well-resolved clades are found in the phylogenetic topology, which can be characterized by morphological synapomorphies from traits of rhizome scales, laminae, sori and paraphyses. Based on molecular and morphological evidence, a new infrageneric classification system of Lepisorus is proposed which subdivided Lepisorus into 17 sections.

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Section: Discussionmentioning

confidence: 99%

Backbone phylogeny of Lepisorus (Polypodiaceae) and a novel infrageneric classification based on the total evidence from plastid and morphological data

et al. 2019

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“… wrightii could be easily identified and are distinguishable from one another, based on morphological characteristics and geographical distribution. Our recent global phylogeny of Asplenium ( Xu et al 2020 ) supports both A. alatulum and A.…”

Section: Introductionmentioning

confidence: 63%

“… matsumurae were found not to be closely related to the A. wrightii complex in a phylogenetic study ( Xu et al 2020 ). The A.…”

Section: Introductionmentioning

confidence: 99%

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Taxonomic revision of the Asplenium wrightii complex (Aspleniaceae) with reinstatement of A. alatulum and A. subcrenatum

Xu¹,

Wang²,

Zhang³

2021

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The Asplenium wrightii complex is morphologically variable and difficult in species delimitation. Owing to lack of comprehensive sampling in phylogenetic studies, the taxonomy of this complex remains unresolved. Based on extensive field observations, specimen examination and our recent molecular data, the present study aims to clarify the identities of three species of Asplenium in this complex from Asia. Our study revealed that A. alatulum and A. subcrenatum, previously treated as synonyms of A. wrightii, should be reinstated. A taxonomic revision of the three species, including their type information, detailed descriptions, voucher specimens, distribution, ecology, as well as taxonomic notes, is carried out.

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“…A. nidus is a well-known C3 epiphytic fern, and phylogenetic analyses have revealed that it belongs to the Neottopteris clade, which is the sister of the Phyllitis clade containing the terrestrial species A. komarovii ( A. scolopendrium L. subsp. Japonicum ) [9–11]. These two species have considerable similarities in morphology, including the presence of lanceolate simple leaves spirally tightly clustered into a bird's nest fern.…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Evidence of Adaptive Evolution of the Epiphytic Fern Asplenium nidus

Zhang

Liu

Shu

et al. 2019

International Journal of Genomics

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Epiphytic ferns have been found to flourish after angiosperms dominated forest communities, and they play important roles in rainforest canopies. How do epiphytic ferns adapt to tropical rainforest canopy habitats? At present, we know little about the molecular mechanism underlying this adaptation. Asplenium nidus is a well-known epiphytic fern that is closely related to the terrestrial species Asplenium komarovii. Here, RNA-seq and comparative transcriptomic analyses were performed to explore the underlying basis of the adaptation of A. nidus to extreme environments. A total of 44.04 and 44.57 Mb clean reads were obtained from A. nidus and A. komarovii, respectively, and they were assembled into 89,741 and 77,912 unigenes. Functional annotation showed that 52,305 (58.28% of the total genes for A. nidus) and 45,938 (58.96% of the total genes for A. komarovii) unigenes were annotated in public databases. Genes involved in stress responses and photosynthesis were found to have undergone positive selection in A. nidus. Compared to A. komarovii, transcription factors related to stress response, leaf development, and root development were found to be considerably expanded in A. nidus, especially in the ANR1 subclade of MADS-box family genes which played roles in lateral root development. This study improves our understanding of the adaptation of A. nidus to epiphytic habitats by forming unique strategies.

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A global plastid phylogeny of the fern genus Asplenium (Aspleniaceae)

Cited by 40 publications

References 123 publications

Backbone phylogeny of Lepisorus (Polypodiaceae) and a novel infrageneric classification based on the total evidence from plastid and morphological data

Backbone phylogeny of Lepisorus (Polypodiaceae) and a novel infrageneric classification based on the total evidence from plastid and morphological data

Taxonomic revision of the Asplenium wrightii complex (Aspleniaceae) with reinstatement of A. alatulum and A. subcrenatum

Transcriptomic Evidence of Adaptive Evolution of the Epiphytic Fern Asplenium nidus

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