RESPIRATION OF [C-14] ALANINE BY THE ECTOMYCORRHIZAL FUNGUS PAXILLUS-INVOLUTUS

被引：15

作者：

CHALOT, M ^{[1
]}

BRUN, A ^{[1
]}

FINLAY, RD ^{[1
]}

SODERSTROM, B ^{[1
]}

机构：

[1] LUND UNIV,DEPT MICROBIAL ECOL,S-22362 LUND,SWEDEN

来源：

FEMS MICROBIOLOGY LETTERS | 1994年 / 121卷 / 01期

关键词：

AMINO ACID RESPIRATION; AMINOOXYACETATE; C-14] ALANINE; ECTOMYCORRHIZAL FUNGUS; PAXILLUS INVOLUTUS; TCA CYCLE;

D O I：

10.1111/j.1574-6968.1994.tb07080.x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

The ectomycorrhizal fungus Paxillus involutus efficiently took up exogenously supplied [C-14]alanine and rapidly converted it to pyruvate, citrate, succinate, fumarate and to CO2, thus providing direct evidence for the utilisation of alanine as a respiratory substrate. [C-14]alanine was further actively metabolised to glutamate, glutamine and aspartate. Exposure to aminooxyacetate completely suppressed (CO2)-C-14 evolution and greatly reduced the flow of carbon from [C-14]alanine to tricarboxylic acid cycle intermediates and amino acids, suggesting that alanine aminotransferase plays a pivotal role in alanine metabolism in Paxillus involutus.

引用

页码：87 / 91

页数：5

共 12 条

[1] THE BIOLOGY OF MYCORRHIZA IN THE ERICACEAE .12. QUANTITATIVE-ANALYSIS OF INDIVIDUAL FREE AMINO-ACIDS IN RELATION TO TIME AND DEPTH IN THE SOIL-PROFILE [J].