罗氏白绢病菌中节律性菌丝生长与菌核昼夜形成之间的关系

The relationship between rhythmic hyphal growth and circadian formation of sclerotia in Sclerotium rolfsii Sacc.

作者信息

Kritzman G, Chet I, Henis Y

出版信息

Can J Microbiol. 1977 Aug;23(8):959-63. doi: 10.1139/m77-143.

Abstract

The mycelium of the phytopathogenic fungus Sclerotium rolfsii type R (ATCC 26326) grown on a solid medium supplemented with 70 mM l-threonine exhibits a synchronous formation of sclerotia in circles whereas both leading and lateral hyphae enter into a rhythmic growth rate. A rhythmic activity of malate synthetase (malate synthase, EC 4.1.3.2) which accompanied the hyphal rhythm and preceded the formation of sclerotial circles was demonstrated. Both translocation of L-[14C]threonine and incorporation of L-[14C]leucine were significantly related to the circadian formation of sclerotia.

摘要

在添加了70 mM L-苏氨酸的固体培养基上生长的致病真菌罗氏白绢病菌R型（ATCC 26326）的菌丝体，会呈环状同步形成菌核，而主菌丝和侧菌丝均进入有节律的生长速率。已证明，苹果酸合成酶（苹果酸合酶，EC 4.1.3.2）的节律性活性伴随着菌丝节律，并先于菌核环的形成。L-[14C]苏氨酸的转运和L-[14C]亮氨酸的掺入都与菌核的昼夜形成显著相关。