Cyst-motile stage relationship,morphology,ultrastructure,and molecular phylogeny of the gymnodinioid dinoflagellate Barrufeta resplendens comb,nov.,formerly known as Gyrodinium resplendens,isolated from the gulf of mexico
作者单位：Third Institute of OceanographySOA Research Unlt for palaeontology.Ghent University Departement of GeographyMcGill UniversityBurnside Hall Department of Oceanctography and Coastal SclencesLouisiana State University
会议名称：《福建省海洋学会2016年学术年会》
会议日期：2016年
学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学]
关 键 词：Barrafetu bearing cyat Gymnodinitm Gymnodinitm resplendens LSU rDNA
摘 要：In the present study,we redescribed Gymnodinitm renplendens through incubation of process bearing cysts extracted from sediment collected in the northern Gulf of *** morphology and eltrastructure of the motile stage and cyst stage were examined using light microscopy,scanning election microacopy,and transmission electron microscopy and this revealed that the species should be transferred to the genus *** genus differs from other gymnodinioid genera in posaeaaing a Smurf-cap apical structure complex(ASC)and currenfly encompasses only one species,Barrufeta *** shows a Smurf-cap ASC that consists of three rows of elongated vesicles with small knobs in the middle *** is very similar to *** in cell morphology,but can be separated using the ultrastructure such as the shape and location of nucleus and pyrenoids,which highlights the importance of ultrastructure at inter-specific level in the genus *** unique cysts of *** are brown and process bearing,and have a tremic archeopyle with a zigrag margin on the dorsal side of the epicyat,and not polar as in cysts of *** cysts do not survive the palynological treatment used here and probably have a wide ***-likelihood and Bayesian inference were carried out based on partial large subunit ribosomal DNA(LSU rDNA)*** phylogeny supports that thegenus Barrafetu is monophyletic,and that the genus Gymnodinitm is *** results suggest that details of the ASC together with ultrastructure are potential features to subdivide the genus Gymnodinium.