Brown R M, Johnson S C, Bold H C
Department of Botany, University of Texas, Austin, Texas 78712Sacred Heart Dominican College, Houston, TexasDepartment of Botany, University of Texas, Austin, Texas 78712.
J Phycol. 1968 Jun;4(2):100-20. doi: 10.1111/j.1529-8817.1968.tb04683.x.
The sexual process of C. moewusii from gametic activation through germination of the zygote has been studied with phase-contrast and electron microscopy. Long strands emerging from the gametic flagellar tips are the site of early flagellar attraction which is followed by union of compatible flagella within common flagellar sheaths. The gametic connecting strand is formed by coordinated elongation of the plasma papillae of a gametic pair and the penetration of the former through their wall papillae while the flagella are in intimate association. After the free-swimming period, the gametic pairs aggregate in a second period of clumping. The connecting strand is abscised and extruded during plas-mogamy as are the flagellar basal bodies. Evidence is presented which suggests union of the gametic plastids, and stages in karyogamy are illustrated. Formation of the wall layers, accumulation of starch and lipids, and changes in plastid organization in the maturing and germinating zygote are described as is the formation of the gonal walls.
利用相差显微镜和电子显微镜研究了牟氏角毛藻从配子激活到合子萌发的有性过程。从配子鞭毛顶端伸出的长链是早期鞭毛吸引的部位，随后是兼容鞭毛在共同鞭毛鞘内结合。配子连接链是由一对配子的质乳头协调伸长并在鞭毛紧密相连时穿过它们的壁乳头而形成的。在自由游动期之后，配子对在第二个聚集期聚集。在质配过程中，连接链和鞭毛基体一样被切除并挤出。有证据表明配子质体结合，并展示了核配的各个阶段。描述了成熟和合子萌发过程中壁层的形成、淀粉和脂质的积累以及质体组织的变化，以及角壁的形成。
