Unique parallel radiations of high-mountainous species of the genus Sedum (Crassulaceae) on the continental island of Taiwan

Ito, Takuro; Yu, Chih Chieh; Nakamura, Kaoru; Chung, Kuo-Fang; Yang, Qin er; Fu, Cheng; Qi, Zhe Chen; Kokubugata, Goro

doi:10.1016/j.ympev.2017.03.028

Cited by 20 publications

(27 citation statements)

References 51 publications

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“…The temporal patterns of these colonization events based on the meta-analysis were strikingly consistent with those resulting from the DEC models (compare Figure 3a to b), indicating that the major colonization wave into Taiwan may have occurred c. 5-6 Ma. Further evidence supporting this important timing of colonization events can be found in other lineages, such as invertebrates (Shih, Hung, Schubart, Chen, & Chang, 2006;Su et al, 2016), freshwater fish (Chiang, Lin, Shao, & Hsu, 2010) and plants (Chou et al, 2011;Ito et al, 2017;Matuszak et al, 2016). Collectively, the highly supported congruency provided robust biogeographical evidence that extant Taiwanese species have colonized from neighbouring land masses since the early Pliocene (c. 5 Ma), which is highly coincident with the estimated geological age of Taiwan (Sibuet & Hsu, 2004;Teng, 1990).…”

Section: Temporal Origin Of Taiwanese Faunamentioning

confidence: 55%

“…5–6 Ma. Further evidence supporting this important timing of colonization events can be found in other lineages, such as invertebrates (Shih, Hung, Schubart, Chen, & Chang, ; Su et al., ), freshwater fish (Chiang, Lin, Shao, & Hsu, ) and plants (Chou et al., ; Ito et al., ; Matuszak et al., ). Collectively, the highly supported congruency provided robust biogeographical evidence that extant Taiwanese species have colonized from neighbouring land masses since the early Pliocene ( c .…”

Section: Discussionmentioning

confidence: 80%

“…Accordingly, like newly formed oceanic islands, the present-day biota of Taiwan is expected to have originated from the Asian continent or surrounding islands (Ali, 2017). Taiwan provides varied habitats for species from diverse biomes (Chou, Thomas, Ge, LePage, & Wang, 2011) as it is geographically located at the interface of the Palaearctic and Oriental faunal zones (Päckert, Martens, & Severinghaus, 2009) and exhibits large elevational heterogeneity (Figure 1b; Ito et al, 2017). Furthermore, the periodic emergence of a land bridge that connected Taiwan to the Asian mainland during Quaternary glacial cycling contributed to intermittent biotic interchanges or geographical isolations (Qu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Geographical and temporal origins of terrestrial vertebrates endemic to Taiwan

Gao

et al. 2018

Journal of Biogeography

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Aim Phylogeographical studies of Taiwan have advanced our knowledge of the origins of its fauna, but the discrepancies raise issues related to the interpretation of single‐taxon studies. Here, we provide a synthesis of the biogeographical histories of multiple terrestrial vertebrates endemic to Taiwan and infer the colonization processes within the context of geological and climatic events. Location Taiwan and neighbouring land masses. Taxon Terrestrial vertebrates. Methods We conducted a meta‐analysis of 28 phylogenetic studies of 33 endemic Taiwanese terrestrial vertebrates to summarize the insights into their source regions and divergence times. We used dispersal–extinction–cladogenesis models to reconstruct the ancestral ranges of 54 endemic species based on a recently published time‐calibrated phylogenetic tree. By constructing a frequency histogram that quantified the number and timing of divergence events within 1 Myr bins, we inferred the spatiotemporal colonization patterns of endemic Taiwanese species. Results The results from 28 phylogenetic studies revealed that South China is the main source region of endemic Taiwanese species. However, based on a more comprehensive time tree, the ancestral area reconstruction analyses indicated that endemic species are predominately of Eastern Himalayan origin. Both datasets highlighted a temporal pattern that the majority of colonization events of terrestrial vertebrates endemic to Taiwan occurred from the early Pliocene (c. 5 Ma) onwards, and these events were temporally congruent with the geological estimates of the emergence of Taiwan Island. Main conclusions Terrestrial vertebrates endemic to Taiwan reached the island over the last 5 Myr from a variety of zoogeographical regions. In contrast to the traditional notion, the Eastern Himalayas is the most important source region of endemic Taiwanese species, followed by South China and Indochina. In addition to the land bridge, transoceanic dispersal provided another potential mode for species to colonize Taiwan.

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Section: Temporal Origin Of Taiwanese Faunamentioning

confidence: 55%

Section: Discussionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

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Geographical and temporal origins of terrestrial vertebrates endemic to Taiwan

Gao

et al. 2018

Journal of Biogeography

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“…through S. tosaense Makino and S. erythrospermum Hayata through S. obtrullatum K.T.Fu) are distributed in Asia and had previously been retrieved as clades by Ito & al. (2017). In their phylogenetic study of Taiwanese Sedum , Ito & al.…”

Section: Resultsmentioning

confidence: 99%

Linnaeus's folly – phylogeny, evolution and classification of Sedum (Crassulaceae) and Crassulaceae subfamily Sempervivoideae

Messerschmid

Klein²,

Kadereit

et al. 2020

TAXON

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Sedum, containing approximately 470 species, is by far the largest genus of Crassulaceae. Three decades of molecular phylogenetic work have provided evidence for the non‐monophyly of Sedum and many more of the 30 genera of Crassulaceae subfam. Sempervivoideae. In this study, we present a broadly sampled and dated molecular phylogeny of Sempervivoideae including 80% of all infrageneric taxa described in Sedum as well as most other genera of the subfamily. We used sequences of one nuclear (ITS) and three plastid markers (matK, rps16, trnL‐trnF). The five major lineages of Sempervivoideae (i.e., Telephium clade, Petrosedum clade, Sempervivum/Jovibarba, Aeonium clade, Leucosedum plus Acre clades) were resolved as successive sister to each other in the phylogenetic analysis of the plastid markers, while in the ITS phylogeny the Petrosedum clade is the closest relative of the Aeonium clade. Our dating analysis of ITS suggests that Sempervivoideae diversified rapidly throughout the Paleocene and Eocene, possibly in the area of the former Tethys and Paratethys archipelago. A biogeographic pattern emerges in which migration out of this ancestral area is linked to pronounced morphological evolution resulting in several distinct lineages recognized as segregate genera thought to be derived from Sedum. These segregate genera, however, have been defined on the basis of strongly homoplasious characters such as degree of petal fusion, petal colouration or flower merism. Moreover, all character states currently used for the delimitation of segregate genera seem to be homoplasious, and each of them can be found in at least one species of Sedum. Extensive literature work led to the conclusion that only few of the monophyletic clades found by us can be defined unambiguously by morphological characters. Mainly for these two reasons, we believe that combination of all 14 genera currently recognized in tribe Sedeae (= clades Leucosedum plus Acre) into Sedum might be the most stable solution of the “Sedum problem”. This new Sedum s.l. would then comprise approximately 755 species.

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“…Sedum, including 13 S. formosanum accessions and 2 species of sect. Oreades from Eastern Asia in the samples, which were reported in previous molecular studies by Mayuzumi & Ohba (2004) and Ito et al (2014Ito et al ( , 2017 and stored in GenBank (Table 2). Following previous phylogenetic study of Crassulaceae (Mayuzumi & Ohba 2004), Aeonium castello-paivae Bolle (1859: 240), A. gomerense Praeger (1929: 473), A. lancerottense Praeger (1932: 190), A. viscatum Bolle (1859: 241), and Greenovia aizoon Bolle (1859: 242), which were collected by Mort et al (2002) and stored in GenBank (Table 1) were selected as outgroup.…”

Section: Sample Collectionmentioning

confidence: 84%

Sedum danjoense (Crassulaceae), a new species of succulent plants from the Danjo Islands in Japan

Ito

Nakanishi²,

Chichibu³

et al. 2017

Phytotaxa

Self Cite

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We compared Sedum formosanum with related species using morphological traits and molecular phylogenetic analysis of nrITS sequences. Morphological comparisons revealed that the plants historically treated as S. formosanum in the Danjo Islands of Japan had 4-merous flower; 8 stamens; narrow triangular sepals of equal size; horizontal carpels when matured; and an irregular branching form. These traits differed from those of S. formosanum in other regions, which has 5-merous flowers; 10 stamens, thick spatulate sepals of unequal size; erect carpels when matured; and a trichotomous branching form. Phylogenetic analysis indicated that plants known as S. formosanum in the Danjo Islands were sister group to S. tetractinum, which are endemic to China and belong to a different clade than S. formosanum, which are found in other regions. Based on the present morphological comparisons and phylogenetical analyses, we describe plants from the Danjo Islands as a new species, S. danjoense, which is distinct from S. formosanum.

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Unique parallel radiations of high-mountainous species of the genus Sedum (Crassulaceae) on the continental island of Taiwan

Cited by 20 publications

References 51 publications

Geographical and temporal origins of terrestrial vertebrates endemic to Taiwan

Geographical and temporal origins of terrestrial vertebrates endemic to Taiwan

Linnaeus's folly – phylogeny, evolution and classification of Sedum (Crassulaceae) and Crassulaceae subfamily Sempervivoideae

Sedum danjoense (Crassulaceae), a new species of succulent plants from the Danjo Islands in Japan

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