Morphology and phylogenetic placement of Mallomonas vietnamica(Synurales,Chrysophyceae)from China

The newly described chrysophyte,Mallomonas vietnamica,is reported for the first time in China from specimens collected in Guizhou Province,SW China.The morphological characteristics were studied using light and scanning electron microscopy.The species was described based on morphological characteristics,including cell size,scale size,dome,V-rib,and bristles.Subsequently,molecular sequencing of M.vietnamica was conducted and a phylogenetic tree was constructed based on concatenated SSU,LSU,and rbc L sequences.The phylogenetic tree led us to suggest raising a new section named Uncatusipedae for this species.This study provides new molecular data from the genus Mallomonas and enriches our understanding of the species diversity and geographical distribution of the genus Mallomonas in China.

山西省鱼鳞藻属植物新纪录

鱼鳞藻属是金藻门植物中种类丰富的属之一。通过对山西所采集的金藻植物标本的鉴定和统计整理,共发现鱼鳞藻属(Mallomonas)植物9种,均为山西省新纪录,分别是具尾鱼鳞藻、卵形鱼鳞藻、显著鱼鳞藻、条纹鱼鳞藻、网状鱼鳞藻、延长鱼鳞藻、光滑鱼鳞藻、中肋鱼鳞藻和蛛形鱼鳞藻。这些新纪录的发现,丰富了山西的藻类植物研究资料。