title: Structure of reproductive apparatus of Gracilaria/Gracilariopsis lemaneiformis (Gracilariaceae, Rhodophyta).
abstract: Reproductive apparatus of Gracilaria/Gracilariopsis lemaneiformis collected from Qingdao city were studied with a light and a transmission electron microscope. The special superficial arrangement of spermatangium for this species was clearly observed, and the ultrastructure of spermatangial development revealed the similar cytodynamic pattern followed by all the Gracilariaceae members developed from spermatangial mother cells to spermatangium. The female reproductive apparatus before fertilization was also observed and trichogyne was found protruding above the cortex, contrary to the earlier reports. Tetrasporangium was formed by an outer cortical cell and the tetraspores became spherical and expended after being released.
authors.affiliation: College of Life Sciences, Ocean University of China, Qingdao, 266003, China.
authors.forename: Di
authors.initials: D
authors.lastname: Xu
authors.forename: JianYi
authors.initials: J
authors.lastname: Zhu
authors.forename: Yang
authors.initials: Y
authors.lastname: He
authors.forename: XiaoJie
authors.initials: X
authors.lastname: Cheng
authors.forename: WenYan
authors.initials: W
authors.lastname: Zhang
authors.forename: XueCheng
authors.initials: X
authors.lastname: Zhang
mesh_terms: D017756:Aquaculture; D044724:Gracilaria / Q000648:ultrastructure*; D012098:Reproduction