アサクサノリの生化学的研究-II : 諸種窒素源の利用機構について
スポンサーリンク
概要
- 論文の詳細を見る
The purpose of the present work is to compare the rates and extents of utilization of such different nitrogen sources as ammonium chloride, sodium nitrate, sodium nitrite, urea and several amino acids by Porphyra tenera. The frond of this alga was cultured for a period of 2 days with one of these compounds as the sole nitrogen source. The comparison was made on the basis of both the decreasing rate of the added nitrogen in the culture media and the forms and amounts of the nitrogenous constituents of the frond. The results obtained are shown in Tables 1-4, and are summarized as follows: (1) Ammonia was easily absorbed by the frond, in which the soluble nitrogenous compounds, chiefly amide, alanine, glutamic acid and citrulline, were accumulated. The insoluble nitrogen in the frond, however, did not increase so markedly as the soluble nitrogen. (2) Nitrate was also absorbed easily, and usually a large amount of nitrate was accumulated in the frond. This suggests that further reduction and conversion of nitrate to organic forms might be restricted by the capacity of the alga to reduce it. However, since the use of nitrate as the nitrogen source characteristically leads to a relatively low content of soluble nitrogen, it seems that this nitrogen source is generally more conducive to the protein synthesis than ammonia or nitrite. (3) The permeability of the frond to nitrite was not so great. Once nitrite was absorbed, however, it was reduced entirely and caused a marked increase of soluble nitrogenous compounds in the frond, as in the case of ammonia. (4) The rate of absorption of urea was so variable in different experiments that we have not yet been able to formulate any characteristic feature of urea utilization in this alga. (5) Glycine, alanine, arginine and sodium glutamate were scarcely or not absorbed by this alga in the present experiments.
- 公益社団法人 日本水産学会の論文
著者
関連論文
- 紅藻オキツノリのgongrine, gigartinine含量とγ-guanidinobutyric acidの存在について
- 海藻におけるgongrineおよびgigartinineの分布について
- 紅藻オキツノリから新アミノ酸‘gigartinine’の分離
- 紅藻ヒラムカデのd-2-hydroxy-3-aminopropane sulfonic acidと3-aminopropane sulfonic acidについて
- 数種海藻のアミノスルフォン酸について
- 紅藻ツルツルより新ペプチド, L-citrullinyl-L-arginineの単離
- 紅藻ツルツルよりL-methionine-l-sulfoxideとN-methylmethionine sulfoxideの分離
- 海藻の遊離アミノ酸とペプチド
- オキツノリ,エキス成分のアミノ酸組成とD-Glyceryltanrineの存在について
- 水産動物筋肉エキスのアミノ酸組成-II : 貝肉の遊離アミノ酸とその腐敗による消長
- 水産動物筋肉エキスのアミノ酸組成-I
- アサクサノリの生化学的研究-II : 諸種窒素源の利用機構について
- 海藻の糖脂質に関する研究-I. : アサクサノリの糖脂質の分画およびガラクトリピドの組成について
- アサクサノリおよびアオサの硫黄の吸収に関する研究-III : リピド画分中の35Sの分布
- アサクサノリの生化学的研究-I : 窒素源添加培養による窒素成分の変化