THE SPECIFIC IDENTITY AND THE LIFE-HISTORY OF JAPANESE SYRINGODERMA (SYRINGODERMATALES, PHAEOPHYCEAE)
THE SPECIFIC IDENTITY AND THE LIFE-HISTORY OF JAPANESE SYRINGODERMA (SYRINGODERMATALES, PHAEOPHYCEAE)
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DOI：
10.1007/bf02488643
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发表时间：
1990-09-01
期刊：
影响因子：
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通讯作者：
YAMADA, I
中科院分区：
文献类型：
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作者：
KAWAI, H;YAMADA, I
对利尻岛日本丁香的观察，以前曾被鉴定为S。australe是根据新收集的可育材料制成的。这些结果以及与深海Syringoderma abyssicola（= Chlanidophora abyssicola）模式标本的比较表明，利尻岛植物应被鉴定为深海Syringoderma abyssicola。利尻岛的深海丁香菌冬季在扇形叶片的侧丝间形成单室孢子囊。单室孢子囊中的第一个产物（单孢子）形成鞭毛，不久后形成细胞壁，然后释放。然后这些退化的配子体分裂成四分体并形成群，每个群都含有一个带有柱头的叶绿体。这些蜂团萌发成分枝的花丝，从这些花丝顶端生长组织的较厚的直立花丝。在5-10 ℃，这些直立的丝状体在长日照条件下形成扇形叶片，在短日照条件下形成单室孢子囊，分别对应于利尻岛的春季和冬季。因此，该物种的季节性生长模式被认为是由光制度和温度的反应控制。
Observations on Japanese Syringoderma from Rishiri Island, which had been previously identified as S. australe, were made based on newly collected fertile material. These results and comparisons with the type specimens of Syringoderma abyssicola (= Chlanidophora abyssicola) revealed that the Rishiri Island plants should be identified as Syringoderma abyssicola. Syringoderma abyssicola from Rishiri Island formed unilocular sporangia among the paraphyses on the fan-shaped blades in winter. The first products (uni-spores) in the unilocular sporangia form flagella, and soon after form cell walls before release. Then these reduced gametophytes divide into tetrads and form swarmers, each of which contains a chloroplast with a stigma. These swarmers germinate into branched filaments, from which thicker erect filaments of apical growth tissue. At 5-10 C these erect filaments formed fan-shaped blades under long-day conditions, and unilocular sporangia under short-day conditions corresponding respectively to spring and winter at Rishiri Island. Accordingly, the seasonal growth pattern of the species is considered to be controlled by responses to photoregime and temperature.