Evidence by flavonoid markers of four natural hybrids among Asplenium normale and related species (Aspleniaceae) in Japan

Matsumoto, Sadamu; Iwashina, Tsukasa; Kitajima, Junichi; Mitsuta, S.

doi:10.1016/s0305-1978(02)00062-5

Cited by 12 publications

(22 citation statements)

References 10 publications

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“…4, 5). The results are consistent with studies on Japanese members of this complex (Matsumoto, 1975;Nakaike, 1992;Matsumoto & al., 2003;Ebihara & al., 2010) which indicated the presence of four independent taxonomic units in Japan: A. normale (= A. normale var. normale), A. boreale (= A. normale var.…”

Section: Discussionsupporting

confidence: 92%

“…4, 6, 7). This finding is consistent with studies of Japanese members of the A. normale complex that suggested the existence of natural hybrids (Matsumoto, 1975;Nakaike, 1992;Matsumoto & al., 2003). In addition to hybridization, conflicting gene trees can be the result of other biological events such as lineage sorting or paralogy.…”

Section: Discussionsupporting

confidence: 91%

“…Overall, our results suggest that the A. normale complex consists of six distinct chloroplast lineages of which two are significantly supported by the species delimitation analyses using Rodrigo's P(RD) and Rosenberg's P(AB) I I II I I II II I I I I I III III I 4x (6) 2x (5) 4x (6) 4x (6) 2x (2) 4x (6) 4x (6) 4x (4) 2x (3) 4x (8) 4x (10) 4x (10) 4x (8) 4x (6) 4x (6) 2x (9) 4x (6) 4x (6) 4x (10) 2x (3) 2x (6) 4x ( in this complex supports the hypothesis that the A. normale complex comprises several distinct species (Nakaike, 1992;Iwatsuki, 1995;Iwashina, 2000;Matsumoto & al., 2003).…”

Section: Discussionsupporting

confidence: 52%

“…These four taxa-A. oligophlebium and the three taxa treated previously under A. normale-show distinct patterns in flavonoid composition (Iwashina & Matsumoto, 1994;Iwashina, 2000;Matsumoto & al., 2003). Further evidence for the separation of these four taxa was recovered by sequencing the chloroplast gene rbcL (Murakami & al., 1999;Ebihara & al., 2010).…”

Section: Introductionmentioning

confidence: 89%

“…Subsequent studies of Japanese A. normale recovered strong evidence for four species in the A. normale complex, i.e., A. boreale (Ohwi ex Sa. Kurata) Nakaike, A. normale, A. shimurae (H. Ito) Nakaike, and A. oligophlebium Baker (Matsumoto, 1975;Matsumoto & al., 2003). Asplenium oligophlebium is distinct in the dissection of its pinnae but otherwise very similar to other Japanese members of the complex.…”

Section: Introductionmentioning

confidence: 99%

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Species diversity and reticulate evolution in the Asplenium normale complex (Aspleniaceae) in China and adjacent areas

Chang

et al. 2013

TAXON

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The Asplenium normale complex contains the widespread A. normale and several geographically restricted species: A. boreale, A. hobdyi, A. kiangsuense, A. oligophlebium and A. shimurae. The taxonomy of this group is unclear with some entities treated infraspecifically or as synonyms. Furthermore, the existence of diploids and tetraploids in this species complex is suggestive of reticulate evolution. In order to formulate a natural classification and to investigate the relationships in this complex, phylogenetic analyses of plastid and nuclear sequence data and inference of ploidy level were used to assess the distinctiveness of putative taxonomic units and their relationships. The Asplenium normale complex was recovered as a monophyletic group comprising six principal chloroplast lineages. The results support the hypothesis that A. normale s.l. contains several species. Based on our inferences, we outline an improved species classification recognizing three diploid and four tetraploid entities. Incongruence of chloroplast and nuclear phylogenies was interpreted to be a result of recurrent reticulation events in the A. normale complex.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Species diversity and reticulate evolution in the Asplenium normale complex (Aspleniaceae) in China and adjacent areas

Chang

et al. 2013

TAXON

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2013

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Integrated taxonomy of the Asplenium normale complex (Aspleniaceae) in China and adjacent areas

Chang

Ebihara

et al. 2018

J Plant Res

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The Asplenium normale D. Don complex comprises several taxa that are either diploid or tetraploid. The tetraploids are assumed to have originated from diploid ancestors by relatively recent autopolyploidization or allopolyploidization. Some of the diploids are readily recognized morphologically but most of the taxa have until now been placed into a single species. However, phylogenetic studies have challenged this treatment and emphasized the notion that the taxonomic treatment of this complex needs to be revised. An integrative taxonomic approach was employed to delimit species in the complex using cytological, morphological, and DNA sequence data. Initially, we employed a diploid first approach to establish a robust taxonomic framework. Special efforts were made to collect and identify the diploid progenitors of each polyploid lineage identified in the plastid DNA based phylogenetic hypothesis. A total of six distinct diploid species were identified. The distinctive nature of the six diploids is strongly supported by sequence differences in plastid DNA and nuclear loci, as well as by the results of morphometric analysis. Diagnostic morphological characters were identified to distinguish the six diploid species, resulting in their revised taxonomy, which includes two novel species, namely, Asplenium normaloides and A. guangdongense. Further studies to strengthen the taxonomic classification of all of the tetraploid taxa are warranted.

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Evidence by flavonoid markers of four natural hybrids among Asplenium normale and related species (Aspleniaceae) in Japan

Cited by 12 publications

References 10 publications

Species diversity and reticulate evolution in the Asplenium normale complex (Aspleniaceae) in China and adjacent areas

Species diversity and reticulate evolution in the Asplenium normale complex (Aspleniaceae) in China and adjacent areas

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Integrated taxonomy of the Asplenium normale complex (Aspleniaceae) in China and adjacent areas

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