Zdenek Kaplan - Academia.edu (original) (raw)
Botanist. Research interests: Plant taxonomy, biosystematics, microevolution, breeding behaviour, hybridization, phytogeography, nomenclature, floristics. Focused on taxonomy of aquatic plants (particularly Potamogeton, Batrachium, Sparganium, Lemna, Utricularia, Najas and Zannichellia) and some groups of terrestrial plants (Luzula, Valerianella, Knautia, Carlina, Tragopogon, Galium, Crepis). See http://www.ibot.cas.cz/personal/kaplan/ and https://www.researchgate.net/profile/Zdenek\_Kaplan for details. Editor of journal Preslia (www.preslia.cz).
less
Uploads
Papers by Zdenek Kaplan
Biodiversity Data Journal, Apr 1, 2022
Revize herbařových dokladů rodu Erichloa, ktere byly sebrany v letech 1960 a 196 v Brně a ktere j... more Revize herbařových dokladů rodu Erichloa, ktere byly sebrany v letech 1960 a 196 v Brně a ktere jsou uloženy v herbařich BRNU a BRA ukazala, že vsechny naležeji druhu Erichloa procera. Udaje o výskytu druhu E. punctata jsou tedy mylne.
Redakční rada: RNDr. Denisa Blaková, CSc. Ing. Petr Moucha, CSc. RNDr. Frantiek Pojer RNDr. Iva... more Redakční rada: RNDr. Denisa Blaková, CSc. Ing. Petr Moucha, CSc. RNDr. Frantiek Pojer RNDr. Ivana Jongepierová Ing. Jiří Danihelka Ing. M. tech, PhD Mgr. Eva Suchomelová Mgr. Jiří Kumpot RNDr. Ludmila Kirschnerová RNDr. Alexandra Klaudisová
Botanical Journal of the Linnean Society, Dec 6, 2021
Ranunculus section Batrachium (water crowfoot) ranks among the most taxonomically challenging aqu... more Ranunculus section Batrachium (water crowfoot) ranks among the most taxonomically challenging aquatic plant groups due to morphological reduction, phenotypic plasticity, polyploidy and reticulate evolution. This study, for the first time in this group, linked morphology, genome size and genetic data (two non-coding regions of plastid DNA and the ITS region of nuclear ribosomal DNA). This extensive data set, including 258 central European populations, enables us to recognize widespread lineages from hybrids and to trace the evolutionary processes underlying the observed diversity. Most of the traditionally recognized species are supported. However, the presence of two morphologically cryptic but genetically well-differentiated lineages was detected within Ranunculus trichophyllus, and three separate lineages of different parentage were confirmed in the Ranunculus penicillatus complex. An allopolyploid origin was revealed in Ranunculus aquatilis, Ranunculus baudotii and in both lineages of R. trichophyllus, for which the parentage has not yet been studied, and allopolyploidy is suspected in all other polyploid taxa except for the triploid cytotype of Ranunculus fluitans, which is most likely autopolyploid. We detected putative F1 hybrids of seven different parentage combinations, including two involving Ranunculus rionii, representing the first known hybrids of this species. An additional 13 hybrid cytotypes (backcrosses or entailing additional polyploidization) were revealed; c. 20% of Ranunculus peltatus accessions seem to be influenced by introgression detectable only using sequence data. The Batrachium group is remarkable due to the coexistence of well-defined lineages with recently evolved biotypes arising due to hybridization and polyploidization.
TAXON
The widespread aquatic plant genus Callitriche is taxonomically very challenging, but noteworthy ... more 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 rem...
1 1 e a~t icle contains supplements to the floristic data in the "Flora of tlie Zabajkal'... more 1 1 e a~t icle contains supplements to the floristic data in the "Flora of tlie Zabajkal'skij Natio~lal Park". Repl~blic of Buryatia. East Siberia (Bojkov et al. 1991). New localities are listed of vascular plants fiom the moi~i~tainous part of Svjatoj Nos peninsula. fiom the Svjatoj Nos isthmus and and fro111 tlie area of tlie Bargl~zin river ~noutli near the SE edge of tlie Svjatoj Nos isth~nus. The list consists of 3 species. 29 species are recorded as new for the Zabajkal'skij Natio~ial Park. 17 as new for the mountainous part of Svjatoj Nos pe~iinsula and I for tlie Svjatoj Nos isthmus. ('h~.~iol~ot/iz~ni r pt~l~/i)lir~m Sclirad. is reported fro111 eastern Siberia for the first time. Key-words: Floristics, vascular plants. I.ake Baikal. East Siberia.
Nove, zcela přepracovane vydani Klice ke květeně Ceske republiky zahrnuje nejnovějsich poznatky z... more Nove, zcela přepracovane vydani Klice ke květeně Ceske republiky zahrnuje nejnovějsich poznatky ze systematiky i terenni botaniky. Obsahuje zpracovani vice než 3700 druhů a poddruhů rostlin, perokresby a strucný text s popisy rostlin a udaji o jejich rozsiřeni, nejcastějsich stanovistich a době květu. Klic je urcen vsem zajemcům o urcovani rostlin, zejmena botanikům, studentům, ucitelům a ochranařům.
Biodiversity Data Journal, Apr 1, 2022
Revize herbařových dokladů rodu Erichloa, ktere byly sebrany v letech 1960 a 196 v Brně a ktere j... more Revize herbařových dokladů rodu Erichloa, ktere byly sebrany v letech 1960 a 196 v Brně a ktere jsou uloženy v herbařich BRNU a BRA ukazala, že vsechny naležeji druhu Erichloa procera. Udaje o výskytu druhu E. punctata jsou tedy mylne.
Redakční rada: RNDr. Denisa Blaková, CSc. Ing. Petr Moucha, CSc. RNDr. Frantiek Pojer RNDr. Iva... more Redakční rada: RNDr. Denisa Blaková, CSc. Ing. Petr Moucha, CSc. RNDr. Frantiek Pojer RNDr. Ivana Jongepierová Ing. Jiří Danihelka Ing. M. tech, PhD Mgr. Eva Suchomelová Mgr. Jiří Kumpot RNDr. Ludmila Kirschnerová RNDr. Alexandra Klaudisová
Botanical Journal of the Linnean Society, Dec 6, 2021
Ranunculus section Batrachium (water crowfoot) ranks among the most taxonomically challenging aqu... more Ranunculus section Batrachium (water crowfoot) ranks among the most taxonomically challenging aquatic plant groups due to morphological reduction, phenotypic plasticity, polyploidy and reticulate evolution. This study, for the first time in this group, linked morphology, genome size and genetic data (two non-coding regions of plastid DNA and the ITS region of nuclear ribosomal DNA). This extensive data set, including 258 central European populations, enables us to recognize widespread lineages from hybrids and to trace the evolutionary processes underlying the observed diversity. Most of the traditionally recognized species are supported. However, the presence of two morphologically cryptic but genetically well-differentiated lineages was detected within Ranunculus trichophyllus, and three separate lineages of different parentage were confirmed in the Ranunculus penicillatus complex. An allopolyploid origin was revealed in Ranunculus aquatilis, Ranunculus baudotii and in both lineages of R. trichophyllus, for which the parentage has not yet been studied, and allopolyploidy is suspected in all other polyploid taxa except for the triploid cytotype of Ranunculus fluitans, which is most likely autopolyploid. We detected putative F1 hybrids of seven different parentage combinations, including two involving Ranunculus rionii, representing the first known hybrids of this species. An additional 13 hybrid cytotypes (backcrosses or entailing additional polyploidization) were revealed; c. 20% of Ranunculus peltatus accessions seem to be influenced by introgression detectable only using sequence data. The Batrachium group is remarkable due to the coexistence of well-defined lineages with recently evolved biotypes arising due to hybridization and polyploidization.
TAXON
The widespread aquatic plant genus Callitriche is taxonomically very challenging, but noteworthy ... more 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 rem...
1 1 e a~t icle contains supplements to the floristic data in the "Flora of tlie Zabajkal'... more 1 1 e a~t icle contains supplements to the floristic data in the "Flora of tlie Zabajkal'skij Natio~lal Park". Repl~blic of Buryatia. East Siberia (Bojkov et al. 1991). New localities are listed of vascular plants fiom the moi~i~tainous part of Svjatoj Nos peninsula. fiom the Svjatoj Nos isthmus and and fro111 tlie area of tlie Bargl~zin river ~noutli near the SE edge of tlie Svjatoj Nos isth~nus. The list consists of 3 species. 29 species are recorded as new for the Zabajkal'skij Natio~ial Park. 17 as new for the mountainous part of Svjatoj Nos pe~iinsula and I for tlie Svjatoj Nos isthmus. ('h~.~iol~ot/iz~ni r pt~l~/i)lir~m Sclirad. is reported fro111 eastern Siberia for the first time. Key-words: Floristics, vascular plants. I.ake Baikal. East Siberia.
Nove, zcela přepracovane vydani Klice ke květeně Ceske republiky zahrnuje nejnovějsich poznatky z... more Nove, zcela přepracovane vydani Klice ke květeně Ceske republiky zahrnuje nejnovějsich poznatky ze systematiky i terenni botaniky. Obsahuje zpracovani vice než 3700 druhů a poddruhů rostlin, perokresby a strucný text s popisy rostlin a udaji o jejich rozsiřeni, nejcastějsich stanovistich a době květu. Klic je urcen vsem zajemcům o urcovani rostlin, zejmena botanikům, studentům, ucitelům a ochranařům.