A strategy for the proliferation of Ulva prolifera, main causative species of green tides, with formation of sporangia by fragmentation.
A strategy for the proliferation of Ulva prolifera, main causative species of green tides, with formation of sporangia by fragmentation.
复制标题
绿潮主要致病物种——石莼的增殖策略，通过破碎形成孢子囊
DOI：
10.1371/journal.pone.0008571
复制
发表时间：
2010-01-05
期刊：
影响因子：
3.7
通讯作者：
Peng G
中科院分区：
文献类型：
--
作者：
Gao S;Chen X;Yi Q;Wang G;Pan G;Lin A;Peng G
石莼是一种常见的绿色海藻，是2008年青岛沿着频繁发生的绿色潮的致潮种之一，对2008年北京奥运会帆船比赛的筹备工作产生了不利影响，超过30%的比赛面积被侵占。鉴于漂浮在水面上的大量生物量的迅速积累，在绿色潮中，我们研究了从U. prolifera上切下的不同直径的盘状体中孢子囊的形成。增殖、孢子囊形成过程中细胞光合特性的变化以及孢子的发育。结果表明，直径小于1.00mm的圆盘最适合孢子囊的形成，但其中有少量孢子释放。孢子释放面积的最高百分比发生在直径为2.50 mm的圆盘中。与此相反，孢子囊只形成在较大的磁盘（3.00毫米，3.50毫米，和4.00毫米直径）的切割边缘。此外，大多数孢子从圆盘中释放出来，表现出活力，并成功地发育成新的个体。这些结果表明，适当大小的片段，从美国。在野外条件下，多种因素通过产生孢子破坏了藻体，导致了藻体的快速增殖，这可能是U. 2008年青岛发生的绿色潮中的一种绿藻。
Ulva prolifera, a common green seaweed, is one of the causative species of green tides that occurred frequently along the shores of Qingdao in 2008 and had detrimental effects on the preparations for the 2008 Beijing Olympic Games sailing competition, since more than 30 percent of the area of the games was invaded. In view of the rapid accumulation of the vast biomass of floating U. prolifera in green tides, we investigated the formation of sporangia in disks of different diameters excised from U. prolifera, changes of the photosynthetic properties of cells during sporangia formation, and development of spores. The results suggested that disks less than 1.00 mm in diameter were optimal for the formation of sporangia, but there was a small amount of spore release in these. The highest percentage of area of spore release occurred in disks that were 2.50 mm in diameter. In contrast, sporangia were formed only at the cut edges of larger disks (3.00 mm, 3.50 mm, and 4.00 mm in diameter). Additionally, the majority of spores liberated from the disks appeared vigorous and developed successfully into new individuals. These results implied that fragments of the appropriate size from the U. prolifera thalli broken by a variety of factors via producing spores gave rise to the rapid proliferation of the seaweed under field conditions, which may be one of the most important factors to the rapid accumulation of the vast biomass of U. prolifera in the green tide that occurred in Qingdao, 2008.
登录
查看更多内容
影响因子：
2.9
作者：
Callow, ME;Callow, JA;Wetherbee, R
通讯作者：
Wetherbee, R
影响因子：
3.7
作者：
SCHREIBER, U;SCHLIWA, U;BILGER, W
通讯作者：
BILGER, W
影响因子：
1.3
作者：
Prasady, P. W. C.;Singh, A. K.;Assi, A.
通讯作者：
Assi, A.
影响因子：
2.9
作者：
SANTELICES, B;PAYA, I
通讯作者：
PAYA, I
影响因子：
3.3
作者：
MAZE, J;MORAND, P;POTOKY, P
通讯作者：
POTOKY, P