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フルテキストURL2007020029.pdf ( 2.9MB ) 公開日 2010-09-28
タイトルChemical fractions of organic nitrogen in acid hydrolysates given from microbial cells and their cell wall substances and characterization of decomposable soil organic nitrogen due to drying
作成者Marumoto, Takuya
Kai, Hideaki
Yoshida, Takashi
Harada, Togoro
作成者ヨミマルモト, タクヤ
カイ, ヒデアキ
ヨシダ, タカシ
ハラダ, トウゴロウ
作成者別表記丸本, 卓哉
甲斐, 秀昭
吉田, 尭
原田, 登五郎
作成者所属山口大学農学部
内容記述(抄録等)1) The major part of organic nitrogen fractions in acid hydrolysate which is mineralized through the decomposition process of cells of B. subtilis in sand for 2 weeks was the form of amino acid N, but the form of amino sugar N was hardly mineralized. Their cytoplasmic substances were mineralized quickly, but their cell wall substances comparatively slowly. When the latter, however, was pretreated with ultrasonic or oven-drying treatment, their mineralization was accelerated. The mineralization rate of the form of amino sugar N was remarkably high. 2) The major part of the decomposable organic nitrogen fractions due to the ultrasonicating or oven-drying effects in acid hydrolysates given from microbial cells and their cell wall substances was the forms of amino acid N and amino sugar N. The accelerating effect of oven-drying pretreatment on the mineralization of the form of amino sugar N was larger than that of ultrasonicating pretreatment under this experimental conditions. 3) The amino acid composition of the amino acid N fraction in acid hydrolysates given from cells of B. subtilis and their cell wall substances which become decomposable due to the ultrasonicating or oven-drying effects almost equalled that of the mucopeptides in cell wall substances, and the quantity of mineralization was proportional to the contents of individual amino acids in cell wall substances. Namely, they were in the following order : Ala, Glu>Asp, Gly, Lys, Val>Ileu, Leu, Ser, Thr, Arg. 4) These results might complementarily prove that microbial cells, especially their cell wall substances, contribute considerably to a source of the decomposable soil organic matter, which was described in the previous paper (7).
本文言語eng
主題農学
資料タイプtext
ファイル形式application/pdf
出版者日本土壌肥料学会
出版者ヨミニホン ドジョウ ヒリョウ ガッカイ
NII資料タイプ学術雑誌論文
査読の有無査読あり
ISSN0038-0768
NCIDAA00844314
掲載誌名Soil science and plant nutrition
23
2
開始ページ125
終了ページ134
発行日1977-06
関連情報URL(HasVersion)http://ci.nii.ac.jp/naid/110001719218/
関連情報URL(IsPartOf)http://www.blackwellpublishing.com/journal.asp?ref=0038-0768&site=1
著者版/出版社版出版社版
リポジトリID2007020029
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/2007020029