From terrestrial to aquatic habitats and back again: molecular insights into the evolution and phylogeny of Callitriche (Plantaginaceae)

Yu, I.; Tanaka, Norio; Barfod, Anders S.; Kaul, Robert B.; Muasya, A. Muthama; García‐Murillo, Pablo; Duyfjes, B.E.E.; Albach, Dirk C.

doi:10.1093/botlinnean/box012

Cited by 20 publications

(24 citation statements)

References 37 publications

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“…In addition, we included eight samples of European species that were collected in other continents, i.e., C. stagnalis from Australia and the U.S.A. (introduced), C. hamulata from the U.S.A. (introduced), C. palustris L. from the U.S.A. (native to both Eurasia and North America), four samples of C. heterophylla Pursh from the U.S.A. (considered to be closely related to C. palustris ; Philbrick & Les, 2000; Ito & al., 2017), and C. muelleri Sond. from Australia (regarded as a sister to the remaining Callitriche taxa, being possibly the most ancestral water‐starwort species; Ito & al., 2017). The initial determination of the samples followed the taxonomic treatments of Lansdown (Lansdown, 2008; Lansdown & al., 2017; with the exception of C. hamulata , see below) and Bean (2007).…”

Section: Methodsmentioning

confidence: 99%

“…With ca 75 recognized species (Hassemer & Lansdown, 2018), it is one of the most diversified genera of aquatic plants. Water‐starworts are considered taxonomically extremely challenging, which is mainly due to their reduced morphology (Schotsman, 1967; Lansdown, 2008), an extensive phenotypic plasticity (Schotsman, 1954; Jones, 1955; Martinsson, 1996) and the complex evolutionary history of particular taxa (e.g., Philbrick & Les, 2000; Demars & Gornall, 2003; Lansdown, 2006a; Ito & al., 2017). In total, 11 different chromosome numbers ranging from 2 n = 6 to 2 n = 40 are currently reported in the genus, including five ploidy levels (summarized in Prančl & al., 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Two larger phylogenetic studies of the genus are available: Philbrick & Les (2000) and Ito & al. (2017). The former included 20 taxa from Europe and North America, using the rbcL plastid gene marker; however, the relationships among some taxa included in the study remained largely unresolved.…”

Section: Introductionmentioning

confidence: 99%

“…We investigated the genetic variation among and within particular species, specifically focusing on hybridization processes and phylogenetic relationships among neglected and morphologically poorly characterized taxa. We compared our ITS data with the results of a recent worldwide phylogenetic study on Callitriche (Ito & al., 2017). In addition, we discuss the evolutionary origins of polyploids in Callitriche and newly describe two previously undetected hybrids.…”

Section: Introductionmentioning

confidence: 99%

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Intricate evolutionary history of Callitriche (Plantaginaceae) taxa elucidated by a combination of DNA sequencing and genome size

Prančl

Fehrer

Caklová

et al. 2020

TAXON

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The widespread aquatic plant genus Callitriche is taxonomically very challenging, but noteworthy in many evolutionary aspects including a high overall diversity, extensive phenotypic plasticity, remarkable reproductive systems and a large variation in ploidy levels and chromosome numbers. We conducted a multi‐level systematic study on 346 individuals of 25 taxa from 21 mostly European countries. Flow cytometric estimation of genome size, chromosome counting and direct sequencing of ITS and trnT‐trnL DNA markers combined with RFLPs of the ITS region were applied in order to unravel the phylogenetic relationships among Callitriche taxa and to clarify the origin of polyploid species and hybrids. Additionally, ITS sequences from a recent worldwide phylogenetic study of the genus were included for comparison. We demonstrate that most of the traditionally recognized European Callitriche taxa are well defined by a combination of genome size and molecular markers. Several species showed remarkable intraspecific genetic variation; previously unknown cryptic taxa were revealed within C. stagnalis, C. truncata and North American C. heterophylla. The origin of selected polyploid taxa was investigated in detail. Diploid C. cophocarpa was confirmed to be the parental species of tetraploid C. platycarpa, but we did not find direct evidence for the putative allopolyploid origin of this species. The complex of C. brutia included three taxa; of these, C. hamulata is probably an allooctoploid derivative of C. brutia var. brutia and C. cophocarpa/C. platycarpa. The third member, C. brutia var. naftolskyi, was newly reclassified at the subspecies level; for the first time, chromosome numbers are provided for this poorly known taxon. For a single triploid sample, our results suggested an autopolyploid origin from C. stagnalis. Four Callitriche hybrids were revealed, two of which are newly described and validated here as C. ×nyrensis and C. brutia nothosubsp. neglecta. A tentative intrageneric concept of two sections (Callitriche, Pseudocallitriche) is adopted, with the need for a more detailed evaluation in the future.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Intricate evolutionary history of Callitriche (Plantaginaceae) taxa elucidated by a combination of DNA sequencing and genome size

Prančl

Fehrer

Caklová

et al. 2020

TAXON

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“…In this study, we focused on Callitriche palustris L., which is closely related to C. heterophylla (Philbrick and Les, 2000;Ito et al, 2017). Although C. palustris exhibits extensive heterophylly associated with submergence (Schenck, 1886;Arber, 1920), heterophyllous leaf development has not yet been described in this species.…”

Section: Introductionmentioning

confidence: 99%

Dimorphic Leaf Development of the Aquatic Plant Callitriche palustris L. Through Differential Cell Division and Expansion

et al. 2020

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Heterophylly, or phenotypic plasticity in leaf form, is a remarkable feature of amphibious plants. When the shoots of these plants grow underwater, they often develop surprisingly different leaves from those that emerge in air. Among aquatic plants, it is typical for two or more distinct leaf development processes to be observed in the same individual exposed to different environments. Here, we analyze the developmental processes of heterophylly in the amphibious plant Callitriche palustris L. (Plantaginaceae). First, we reliably cultured this species under laboratory conditions and established a laboratory strain. We also established a framework for molecularbased developmental analyses, such as whole-mount in situ hybridization. We observed several developmental features of aerial and submerged leaves, including changes in form, stomata and vein formation, and transition of the meristematic zone. Then we defined developmental stages for C. palustris leaves. We found that in early stages, aerial and submerged leaf primordia had similar forms, but became discriminable through cell divisions with differential direction, and later became highly distinct via extensive cell elongation in submerged leaf primordia.

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An update on the indigenous vascular flora of sub-Antarctic Marion Island: taxonomic changes, sequences for DNA barcode loci, and genome size data

et al. 2020

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From terrestrial to aquatic habitats and back again: molecular insights into the evolution and phylogeny of Callitriche (Plantaginaceae)

Cited by 20 publications

References 37 publications

Intricate evolutionary history of Callitriche (Plantaginaceae) taxa elucidated by a combination of DNA sequencing and genome size

Intricate evolutionary history of Callitriche (Plantaginaceae) taxa elucidated by a combination of DNA sequencing and genome size

Dimorphic Leaf Development of the Aquatic Plant Callitriche palustris L. Through Differential Cell Division and Expansion

An update on the indigenous vascular flora of sub-Antarctic Marion Island: taxonomic changes, sequences for DNA barcode loci, and genome size data

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