Morphological and phylogenetic data do not support the split of Alexandrium into four genera
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Morphological and phylogenetic data do not support the split of Alexandrium into four genera. / Mertens, Kenneth Neil; Adachi, Masao; Anderson, Donald M.; Band-Schmidt, Christine J.; Bravo, Isabel; Brosnahan, Michael L.; Bolch, Christopher J. S.; Calado, António J.; Carbonell-Moore, M. Consuelo; Chomérat, Nicolas; Elbrächter, Malte; Figueroa, Rosa Isabel; Fraga, Santiago; Gárate-Lizárraga, Ismael; Garcés, Esther; Gu, Haifeng; Hallegraeff, Gustaaf; Hess, Philipp; Hoppenrath, Mona; Horiguchi, Takeo; Iwataki, Mitsunori; John, Uwe; Kremp, Anke; Larsen, Jacob; Leaw, Chui Pin; Li, Zhun; Lim, Po Teen; Litaker, Wayne; MacKenzie, Lincoln; Masseret, Estelle; Matsuoka, Kazumi; Moestrup, Øjvind; Montresor, Marina; Nagai, Satoshi; Nézan, Elisabeth; Nishimura, Tomohiro; Okolodkov, Yuri B.; Orlova, Tatiana Yu; Reñé, Albert; Sampedro, Nagore; Satta, Cecilia Teodora; Shin, Hyeon Ho; Siano, Raffaele; Smith, Kirsty F.; Steidinger, Karen; Takano, Yoshihito; Tillmann, Urban; Wolny, Jennifer; Yamaguchi, Aika; Murray, Shauna.
I: Harmful Algae, Bind 98, 101902, 2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Morphological and phylogenetic data do not support the split of Alexandrium into four genera
AU - Mertens, Kenneth Neil
AU - Adachi, Masao
AU - Anderson, Donald M.
AU - Band-Schmidt, Christine J.
AU - Bravo, Isabel
AU - Brosnahan, Michael L.
AU - Bolch, Christopher J. S.
AU - Calado, António J.
AU - Carbonell-Moore, M. Consuelo
AU - Chomérat, Nicolas
AU - Elbrächter, Malte
AU - Figueroa, Rosa Isabel
AU - Fraga, Santiago
AU - Gárate-Lizárraga, Ismael
AU - Garcés, Esther
AU - Gu, Haifeng
AU - Hallegraeff, Gustaaf
AU - Hess, Philipp
AU - Hoppenrath, Mona
AU - Horiguchi, Takeo
AU - Iwataki, Mitsunori
AU - John, Uwe
AU - Kremp, Anke
AU - Larsen, Jacob
AU - Leaw, Chui Pin
AU - Li, Zhun
AU - Lim, Po Teen
AU - Litaker, Wayne
AU - MacKenzie, Lincoln
AU - Masseret, Estelle
AU - Matsuoka, Kazumi
AU - Moestrup, Øjvind
AU - Montresor, Marina
AU - Nagai, Satoshi
AU - Nézan, Elisabeth
AU - Nishimura, Tomohiro
AU - Okolodkov, Yuri B.
AU - Orlova, Tatiana Yu
AU - Reñé, Albert
AU - Sampedro, Nagore
AU - Satta, Cecilia Teodora
AU - Shin, Hyeon Ho
AU - Siano, Raffaele
AU - Smith, Kirsty F.
AU - Steidinger, Karen
AU - Takano, Yoshihito
AU - Tillmann, Urban
AU - Wolny, Jennifer
AU - Yamaguchi, Aika
AU - Murray, Shauna
PY - 2020
Y1 - 2020
N2 - A recently published study analyzed the phylogenetic relationship between the genera Centrodinium and Alexandrium, confirming an earlier publication showing the genus Alexandrium as paraphyletic. This most recent manuscript retained the genus Alexandrium, introduced a new genus Episemicolon, resurrected two genera, Gessnerium and Protogonyaulax, and stated that: “The polyphyly [sic] of Alexandrium is solved with the split into four genera”. However, these reintroduced taxa were not based on monophyletic groups. Therefore this work, if accepted, would result in replacing a single paraphyletic taxon with several non-monophyletic ones. The morphological data presented for genus characterization also do not convincingly support taxa delimitations. The combination of weak molecular phylogenetics and the lack of diagnostic traits (i.e., autapomorphies) render the applicability of the concept of limited use. The proposal to split the genus Alexandrium on the basis of our current knowledge is rejected herein. The aim here is not to present an alternative analysis and revision, but to maintain Alexandrium. A better constructed and more phylogenetically accurate revision can and should wait until more complete evidence becomes available and there is a strong reason to revise the genus Alexandrium. The reasons are explained in detail by a review of the available molecular and morphological data for species of the genera Alexandrium and Centrodinium. In addition, cyst morphology and chemotaxonomy are discussed, and the need for integrative taxonomy is highlighted.
AB - A recently published study analyzed the phylogenetic relationship between the genera Centrodinium and Alexandrium, confirming an earlier publication showing the genus Alexandrium as paraphyletic. This most recent manuscript retained the genus Alexandrium, introduced a new genus Episemicolon, resurrected two genera, Gessnerium and Protogonyaulax, and stated that: “The polyphyly [sic] of Alexandrium is solved with the split into four genera”. However, these reintroduced taxa were not based on monophyletic groups. Therefore this work, if accepted, would result in replacing a single paraphyletic taxon with several non-monophyletic ones. The morphological data presented for genus characterization also do not convincingly support taxa delimitations. The combination of weak molecular phylogenetics and the lack of diagnostic traits (i.e., autapomorphies) render the applicability of the concept of limited use. The proposal to split the genus Alexandrium on the basis of our current knowledge is rejected herein. The aim here is not to present an alternative analysis and revision, but to maintain Alexandrium. A better constructed and more phylogenetically accurate revision can and should wait until more complete evidence becomes available and there is a strong reason to revise the genus Alexandrium. The reasons are explained in detail by a review of the available molecular and morphological data for species of the genera Alexandrium and Centrodinium. In addition, cyst morphology and chemotaxonomy are discussed, and the need for integrative taxonomy is highlighted.
KW - Harmful algal blooms
KW - Paraphyletic
KW - Phylogenetics
KW - Saxitoxin
KW - Spirolides
KW - Taxonomy
U2 - 10.1016/j.hal.2020.101902
DO - 10.1016/j.hal.2020.101902
M3 - Journal article
C2 - 33129459
AN - SCOPUS:85090716409
VL - 98
JO - Harmful Algae
JF - Harmful Algae
SN - 1568-9883
M1 - 101902
ER -
ID: 249864100