Diversity and emendation of the genus Planktoniella (Bacillariophyceae), with descriptions of P. tubulata sp. nov. and P. trifurcata sp. nov
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Diversity and emendation of the genus Planktoniella (Bacillariophyceae), with descriptions of P. tubulata sp. nov. and P. trifurcata sp. nov. / Yue, Fang; Niu, Biaobiao; Guo, Yaqiong; Lundholm, Nina; Li, Yang.
In: Journal of Phycology, Vol. 57, No. 5, 2021, p. 1433-1449.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Diversity and emendation of the genus Planktoniella (Bacillariophyceae), with descriptions of P. tubulata sp. nov. and P. trifurcata sp. nov
AU - Yue, Fang
AU - Niu, Biaobiao
AU - Guo, Yaqiong
AU - Lundholm, Nina
AU - Li, Yang
PY - 2021
Y1 - 2021
N2 - For the first time, LSU and SSU sequences were obtained from four species of the marine planktonic diatom Planktoniella. Samples were collected and cultured from Chinese coastal waters, and morphological observations were made using light and scanning electron microscopy. Combined morphological and DNA sequence data revealed two new species herein described as Planktoniella tubulata and Planktoniella trifurcata. Planktoniella tubulata is characterized by the prominent external tubes of two rimoportulae and the long external tubes of the marginal fultoportulae. The latter are organized regularly in a ring, externally on the mantle, and protrude parallel to the valvar plane. Planktoniella trifurcata is unique in having mucilaginous extensions that usually expand into three lobes, and external extensions of the marginal fultoportulae being either tubes or spines. In the phylogenetic analyses inferred from SSU and LSU sequences, the four analyzed Planktoniella taxa formed a well-supported monophyletic group. A suite of three characters, mucilage membranes or wings, two marginal rimoportulae, and mantle ribs are diagnostic for Planktoniella. Based on these detailed ultrastructural observations, the description of Planktoniella is emended.
AB - For the first time, LSU and SSU sequences were obtained from four species of the marine planktonic diatom Planktoniella. Samples were collected and cultured from Chinese coastal waters, and morphological observations were made using light and scanning electron microscopy. Combined morphological and DNA sequence data revealed two new species herein described as Planktoniella tubulata and Planktoniella trifurcata. Planktoniella tubulata is characterized by the prominent external tubes of two rimoportulae and the long external tubes of the marginal fultoportulae. The latter are organized regularly in a ring, externally on the mantle, and protrude parallel to the valvar plane. Planktoniella trifurcata is unique in having mucilaginous extensions that usually expand into three lobes, and external extensions of the marginal fultoportulae being either tubes or spines. In the phylogenetic analyses inferred from SSU and LSU sequences, the four analyzed Planktoniella taxa formed a well-supported monophyletic group. A suite of three characters, mucilage membranes or wings, two marginal rimoportulae, and mantle ribs are diagnostic for Planktoniella. Based on these detailed ultrastructural observations, the description of Planktoniella is emended.
KW - Chinese coastal waters
KW - diatom
KW - diversity
KW - morphology
KW - phylogeny
KW - Planktoniella
KW - FRESH-WATER
KW - COENOBIODISCUS-MURIFORMIS
KW - MOLECULAR PHYLOGENY
KW - DIATOM
KW - THALASSIOSIRALES
KW - MARINE
KW - MORPHOLOGY
KW - CLEVE
U2 - 10.1111/jpy.13176
DO - 10.1111/jpy.13176
M3 - Journal article
C2 - 33914924
VL - 57
SP - 1433
EP - 1449
JO - Journal of Phycology
JF - Journal of Phycology
SN - 0022-3646
IS - 5
ER -
ID: 272377314