期刊
JOURNAL OF PHYCOLOGY
卷 38, 期 6, 页码 1169-1175出版社
WILEY
DOI: 10.1046/j.1529-8817.2002.01202.x
关键词
carpospores; cell mass; cystocarp maturation; Gracilaria cornea; polyamines; putrescine; spermidine; spermine
Naturally occurring levels of putrescine, spermidine, and spermine were analyzed in female gametophyte (nonfertilized) and reproductive tissues (cystocarps) at two different stages of development in the marine red algae Gracilaria cornea J. Agardh. Endogenous polyamine levels changed at differential stages of cystocarp maturation. Highest polyamine values were found on tissue from the early post-fertilization stage, decreasing as the cystocarp matured. Incubation experiments revealed that exogenous polyamines induced cystocarp maturation and promoted carpospore liberation, developing cell masses within 4 to 7 days in treatments with spermine. This is the first report on the effect of polyamines on cystocarp maturation in marine algae.
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