Organic Acid contents of soybean: age and source of nitrogen.
Organic Acid contents of soybean: age and source of nitrogen.
复制标题
大豆有机酸含量：年龄和氮源。
DOI：
10.1104/pp.68.5.989
复制
发表时间：
1981
期刊：
影响因子：
7.4
通讯作者：
Robert H. Burris
中科院分区：
文献类型：
--
作者：
David K. Stumpf;Robert H. Burris
对大豆（Glycine max v.Hodgson）根、茎、叶组织中有机酸含量进行了萌发后33天的跟踪研究。丙二酸是叶和根组织中的主要酸，而富马酸在茎中占主导地位。茎和根中丙二酸浓度随时间的变化趋势相似，但叶中丙二酸浓度的变化趋势不同。在根瘤从33天老的植物，丙二酸是占主导地位的酸。丙二酸水平在根和根瘤组织的33天老的植物被压抑在响应除了硝酸盐或氨。在硝态氮上，根组织的丙二酸浓度高于铵态氮，而在铵态氮上，根组织的丙二酸浓度高于硝态氮。分析根的有机酸浓度作为年龄和距离根尖在年轻的大豆幼苗的功能揭示了一个区域一贯高苹果酸。整个根中的丙二酸水平在96至120小时龄的组织中急剧上升。
The organic acid content of soybean (Glycine max v. Hodgson) root, stem, and leaf tissue was followed for 33 days after germination. Malonate was the predominant acid in leaf and root tissue, whereas fumarate was predominant in the stem. The malonate concentrations of the stem and root showed similar variations with time, but the leaf response was quite different. In nodules from 33-day-old plants, malonate was the predominant acid. Malonate levels in root and nodule tissue of 33-day-old plants were depressed in response to the addition of either nitrate or ammonia. Nodule tissue had a higher malonate concentration on nitrate nitrogen than it did on ammonium nitrogen, whereas root tissue had the higher malonate concentration on ammonium nitrogen. Analysis of organic acid concentrations of roots as a function of age and distance from the root tip in young soybean seedlings revealed a zone consistently high in malate. The malonate level in the entire root rose dramatically in tissue of age 96 to 120 hours.