Phylogeny of Hymenophyllum subg. Mecodium (Hymenophyllaceae), with special focus on the diversity of the Hymenophyllum polyanthos species complex

Vasques, Diego Tavares; Ebihara, Atsushi; Hirai, Regina Y.; Prado, Jefferson; Itô, Motomi

doi:10.1007/s00606-019-01609-y

Cited by 13 publications

(14 citation statements)

References 25 publications

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“…Moreover, to evaluate the status of Hymenophyllum wrightii f. serratum, we sampled 4 accessions from Jeju-do, Korea. In comparing the molecular analysis, we aligned with the related taxa, above mentioned H. wrightii, newly 1 accession of H. polyanthos, 4 accessions of H. barbatum from Korea, and 5 accessions gotten from DNA bank (Hasebe et al, 1994;Kim et al, 2013;Vasques et al, 2019). Total genomic DNA was extracted using the DNeasy plant mini kit (Qiagen Inc., Valencia, CA, USA).…”

Section: Methodsmentioning

confidence: 99%

“…In North America, however, the more widely distributed gametophytes of this taxon in the lowland coast of Northwest America were located far from sporophytes (Duffy et al, 2015). Park et al (2020) suggested that H. wrightii spreads from Japan to northeast Asia and North America, but environmental changes, such as aridity, temperature, or light conditions (Makgomol and Sheffield, 2001;Ebihara et al, 2019) suppress the growth of sporophytes. Although this explanation appears reasonable, a detailed study based on environmental factors or biogeographic level will be needed to confirm the rapid disappearance of sporophytes and only the presence of gametophytes.…”

Section: Morphology and Distribution Of Three Independent Gametophytesmentioning

confidence: 99%

“…2). Ebihara et al (2019) reported that the gametophytes of P. makinoi were found occasionally in Unazawa Valley, Okutama-machi, Tokyo, Japan without sporophytes. Sporophytes of P. makinoi form small populations on the Korean Peninsula, but they are widely spread (Fig.…”

Section: Morphology and Distribution Of Three Independent Gametophytesmentioning

confidence: 99%

“…2). In Japan, the sporophytes of P. makinoi are difficult to find (Ebihara et al, 2019). A more detailed examination of the distribution will be needed to explain the biogeographic evolution.…”

Section: Morphology and Distribution Of Three Independent Gametophytesmentioning

confidence: 99%

“…These independent gemmiferous fern gametophytes in filmy ferns (Hymenophyllaceae), vittarioid ferns (Pteridaceae), and grammatid ferns (Polypodiaceae) are usually found in temperate zones from the eastern United States, northeastern Canada, Europe, and Japan (Farrar, 1967(Farrar, , 1985(Farrar, , 1990(Farrar, , 1992Rumsey et al, 1998;Krukowski and Swierkoz, 2004;Ebihara et al, 2008;Duffy et al, 2015;Pinson et al, 2016;Ebihara et al, 2019). Such independent gametophytes are limited to temperate zones as a hypothesized stable vegetation that appeared to be less affected by climate change during 404…”

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confidence: 99%

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Identification of three independent fern gametophytes and Hymenophyllum wrightii f. serratum from Korea based on molecular data

Lee¹,

Lee²,

Hwang³

2020

Korean J. Pl. Taxon

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Colonies of three independent gametophytes (one that is filamentous and two that are ribbon-like) without sporophytes occur in Gyeonggi-do, Gangwon-do, Gyeongsang-do, and Jeju-do, Korea. They have a moss-like appearance at first sight, with tiny plantlets and gemmae, and grow in cool, shaded, relatively deep dint places of large rocks, such as the small caves in high mountains, close to valleys. The gametophytes were identified based on morphological and molecular data by chloroplast DNA (cpDNA) sequence data (rbcL, rps4 gene and rps4-trnS intergenic spacer). Here, rbcL, rps4 gene and rps4-trnS intergenic spacer data of one independent gametophyte distributed in Korea have the same morphology, DNA sequence and monophyletic group as Crepidomanes intricatum from the eastern United States. They also share the same cpDNA data with Crepidomanes schmidtianum recently reported from Korea. The other independent gametophyte should be Hymenophyllum wrightii based on cpDNA data. The last one was presumed to be Pleurosoriopsis makinoi based on molecular data. The taxonomic status was confirmed to be the forma of Hymenophyllum wrightii through a revision of Hymenophyllum wrightii f. serratum based on molecular data.

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Section: Methodsmentioning

confidence: 99%

Section: Morphology and Distribution Of Three Independent Gametophytesmentioning

confidence: 99%

Section: Morphology and Distribution Of Three Independent Gametophytesmentioning

confidence: 99%

Section: Morphology and Distribution Of Three Independent Gametophytesmentioning

confidence: 99%

mentioning

confidence: 99%

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Identification of three independent fern gametophytes and Hymenophyllum wrightii f. serratum from Korea based on molecular data

Lee¹,

Lee²,

Hwang³

2020

Korean J. Pl. Taxon

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Study of the independent gametophytes found on Jeju Island in South Korea and the first record of the obligate independent gametophyte of Antrophyum obovatum Baker

Park

Kim

2020

Ecology and Evolution

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Fern gametophytes have often been neglected in research; however, studies on gametophytes are crucial for a better understanding of the evolution of ferns. During their life cycle, some gametophytes produce large and long‐lived populations without producing sporophytes and reproduce independently through asexual means, such as through the formation of gemmae. In this study, we investigated independent gametophytes on the Jeju Island of Korea, which was located on the land bridge between East China and Japan during the glacial periods. Fourteen gametophyte populations were collected from seven sites, of which 13 populations were clearly identified as belonging to four fern species known to occur in Jeju Island with BLAST searches using rbcL and trnL‐F sequences. Surprisingly, the last remaining population constituted undescribed taxa in Korea. We presented the first report of the independent gametophytes of Antrophyum obovatum Baker which has not been previously recorded in Korea. It has been supposed that many ferns sought suitable habitat throughout the land bridge between China and Japan. However, Jeju Island might be unsuitable for vittarioid ferns that prefer a tropical or subtropical environment. Consequently, only two species of vittariod ferns ( A. obovatum and Haplopteris flexuosa (Fée) E.H. Crane) in the form of a gametophyte and sporophyte, respectively, exist on Jeju Island. Therefore, this gametophyte population must be protected and managed from a conservation perspective. In the case of the independent gametophyte of Hymenophyllum wrightii Bosch, haplotype analysis was conducted based on the rbcL sequences and the result supported that the North American populations were migrated from Japan through land bridge during the glacial periods and Jeju populations were recently established by long‐distance dispersal of the Japanese populations.

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The dynamic evolution of mobile open reading frames in plastomes of Hymenophyllum Sm. and new insight on Hymenophyllum coreanum Nakai

Kim

2020

Sci Rep

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In this study, four plastomes of Hymenophyllum, distributed in the Korean peninsula, were newly sequenced and phylogenomic analysis was conducted to reveal (1) the evolutionary history of plastomes of early-diverging fern species at the species level, (2) the importance of mobile open reading frames in the genus, and (3) plastome sequence divergence providing support for H. coreanum to be recognized as an independent species distinct from H. polyanthos. In addition, 1C-values of H. polyanthos and H. coreanum were measured to compare the genome size of both species and to confirm the diversification between them. The rrn16-trnV intergenic regions in the genus varied in length caused by Mobile Open Reading Frames in Fern Organelles (MORFFO). We investigated enlarged noncoding regions containing MORFFO throughout the fern plastomes and found that they were strongly associated with tRNA genes or palindromic elements. Sequence identity between plastomes of H. polyanthos and H. coreanum is quite low at 93.35% in the whole sequence and 98.13% even if the variation in trnV-rrn16 intergenic spacer was ignored. In addition, different genome sizes were found for these species based on the 1C-value. Consequently, there is no reason to consider them as a conspecies.

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Phylogeny of Hymenophyllum subg. Mecodium (Hymenophyllaceae), with special focus on the diversity of the Hymenophyllum polyanthos species complex

Cited by 13 publications

References 25 publications

Identification of three independent fern gametophytes and Hymenophyllum wrightii f. serratum from Korea based on molecular data

Identification of three independent fern gametophytes and Hymenophyllum wrightii f. serratum from Korea based on molecular data

Study of the independent gametophytes found on Jeju Island in South Korea and the first record of the obligate independent gametophyte of Antrophyum obovatum Baker

The dynamic evolution of mobile open reading frames in plastomes of Hymenophyllum Sm. and new insight on Hymenophyllum coreanum Nakai

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