Differentiation of germination characteristics in Scutellaria rubropunctata (Lamiaceae) associated with adaptation to rheophytic habitats in the subtropical Ryukyu Islands of Japan

Yoshimura, Hikaru; Arakaki, Shogo; Hamagawa, Mikoto; Kitamura, Yoshihisa; Yokota, Masatsugu; Denda, Tetsuo

doi:10.1007/s10265-019-01103-z

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…The disjunct distribution in the mountainous landscape strongly limited genetic exchange via seed and pollen, resulting in genetic isolation between the KUZ and DAI populations. In addition, the low mobility of S. acerifolia , with its specialized habitat in limited climatic conditions, would likely restrict the expansion of its distribution (e.g., Yoshimura et al, 2019). The lack of suitable waterfall habitats and the discontinuity of the populations in the undulating topology likely encouraged the formation of the two small segregated regional populations, even though they are only 10 km apart.…”

Section: Discussionmentioning

confidence: 99%

Comparative analysis of spatial genetic structures in sympatric populations of two riparian plants, Saxifraga acerifolia and Saxifraga fortunei

Magota

Sakaguchi

Hirota

et al. 2021

American J of Botany

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Premise The genetic structure between plant populations is facilitated by the spatial population arrangement and limited dispersal of seed and pollen. Saxifraga acerifolia, a local endemic species in Japan, is a habitat specialist that is confined to waterfalls in riparian environments. Its sister species, Saxifraga fortunei, is a generalist that is widely distributed along riverbanks. Here, we examined sympatric populations of the two Saxifraga species to test whether the differences in habitat preference and colonization process influenced regional and local genetic structures. Methods To reveal genetic structures, we examined chloroplast microsatellite variations and genome‐wide nucleotide polymorphisms obtained by genotyping by sequencing. We also estimated the gene flow among and within populations and performed landscape genetic analyses to evaluate seed and pollen movement and the extent of genetic isolation related to geographic distance and/or habitat differences. Results We found strong genetic structure in the specialist S. acerifolia, even on a small spatial scale (<1 km part); each population on a different waterfall in one river system had a completely different predominant haplotype. By contrast, the generalist S. fortunei showed no clear genetic differentiation. Conclusions Our findings suggest that the level of genetic isolation was increased in S. acerifolia by the spatially fragmented habitat and limited seed and pollen dispersal over waterfalls. Habitat differentiation between the sister taxa could have contributed to the different patterns of gene flow and then shaped the contrasting genetic structures.

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Section: Discussionmentioning

confidence: 99%

Comparative analysis of spatial genetic structures in sympatric populations of two riparian plants, Saxifraga acerifolia and Saxifraga fortunei

Magota

Sakaguchi

Hirota

et al. 2021

American J of Botany

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And Growth on Form? How tissue expansion generates novel shapes, colours and enhance biological functions of Turing colour patterns of Eukaryotes

Galipot

2023

Preprint

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Evidenced in zebrafishes and Mimulus, Turing-like mechanisms are probably responsible for many periodic color patterns of Eukaryotes. Nevertheless, patterns such as leopard iconic rosettes required additional ingredients to explain their formation. Growth being the main candidate, we extensively explore its multiple facets, at the Eukaryotes scale. We show that putative-growth Turing color patterns are present in many diverse lineages. Using models, we show the many ways growth can induce new shapes and colors, and that putative-growth pattern locations correlates with tissue hot spots of growth, suggesting the latter as the underlying mechanism. By reverse reasoning, we show that growth effects could reveal crucial information about pattern formation. Finally, we show how putative growth patterns can contribute to influence organisms visibility, thereby improving camouflage or aposematism.

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Differentiation of germination characteristics in Scutellaria rubropunctata (Lamiaceae) associated with adaptation to rheophytic habitats in the subtropical Ryukyu Islands of Japan

Cited by 2 publications

References 26 publications

Comparative analysis of spatial genetic structures in sympatric populations of two riparian plants, Saxifraga acerifolia and Saxifraga fortunei

Comparative analysis of spatial genetic structures in sympatric populations of two riparian plants, Saxifraga acerifolia and Saxifraga fortunei

And Growth on Form? How tissue expansion generates novel shapes, colours and enhance biological functions of Turing colour patterns of Eukaryotes

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