Outflow movement during gamete discharge in Bryopsis plumosa (Caulerpales, Chlorophyta)
Outflow movement during gamete discharge in Bryopsis plumosa (Caulerpales, Chlorophyta)
复制标题
羽藻(Caulerpales,绿藻门)配子排出过程中的流出运动
DOI:
10.1111/j.1440-1835.2010.00601.x
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发表时间:
2011
期刊:
影响因子:
1.6
通讯作者:
Okuda K
中科院分区:
文献类型:
--
作者:
Mine I;Yoshimatsu K;Kobanba A;Sekida S;Okuda K
Brief treatment with hypertonic solutions induced gamete discharge from gametangia in the coenocytic green algaBryopsis plumosa(Hudson) C. Agardh. It is known that gamete discharge in this alga is triggered by a change from darkness to light. However, in this study mature gametangia, incubated for 30–120 s in artificial seawater (ASW) with an additional 0.4–0.6 M NaCl and then transferred into pure ASW, discharged gametes in darkness. The treatment did not affect the motility of the gametes. Addition of sucrose (1.0–1.2 M) to ASW also induced gamete discharge in darkness. Similar results were obtained by adding KCl (0.4 M) or mannitol (1.2 M) to ASW. Continuous incubation of gametangia in such hypertonic solutions also induced gamete discharge but led to a delay and a reduction in the rate of gamete discharge, and a loss of gamete motility. In gametangia treated with the hypertonic solutions, as well as in those exposed to light, shortening of the gametangial length was observed before gamete discharge.
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