苜蓿菌根中早期结瘤素基因的表达表明，形成丛枝菌根和根瘤菌诱导根瘤所使用的信号转导途径可能是保守的。
Expression of early nodulin genes in alfalfa mycorrhizae indicates that signal transduction pathways used in forming arbuscular mycorrhizae and Rhizobium-induced nodules may be conserved.
作者信息
van Rhijn P, Fang Y, Galili S, Shaul O, Atzmon N, Wininger S, Eshed Y, Lum M, Li Y, To V, Fujishige N, Kapulnik Y, Hirsch A M
机构信息
Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, CA 90095-1606, USA.
出版信息
Proc Natl Acad Sci U S A. 1997 May 13;94(10):5467-72. doi: 10.1073/pnas.94.10.5467.
Abstract
Transcripts for two genes expressed early in alfalfa nodule development (MsENOD40 and MsENOD2) are found in mycorrhizal roots, but not in noncolonized roots or in roots infected with the fungal pathogen Rhizoctonia solani. These same two early nodulin genes are expressed in uninoculated roots upon application of the cytokinin 6-benzylaminopurine. Correlated with the expression of the two early nodulin genes, we found that mycorrhizal roots contain higher levels of trans-zeatin riboside than nonmycorrhizal roots. These data suggest that there may be conservation of signal transduction pathways between the two symbioses-nitrogen-fixing nodules and phosphate-acquiring mycorrhizae.
摘要
在苜蓿根瘤发育早期表达的两个基因（MsENOD40和MsENOD2）的转录本在菌根根中被发现，但在未被定殖的根或被真菌病原体立枯丝核菌感染的根中未被发现。在施加细胞分裂素6-苄基腺嘌呤后，这两个早期结瘤素基因在未接种的根中也有表达。与这两个早期结瘤素基因的表达相关，我们发现菌根根中反式玉米素核苷的含量高于非菌根根。这些数据表明，在两种共生关系——固氮根瘤和获取磷的菌根之间，可能存在信号转导途径的保守性。
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Expression of early nodulin genes in alfalfa mycorrhizae indicates that signal transduction pathways used in forming arbuscular mycorrhizae and Rhizobium-induced nodules may be conserved.苜蓿菌根中早期结瘤素基因的表达表明，形成丛枝菌根和根瘤菌诱导根瘤所使用的信号转导途径可能是保守的。
Proc Natl Acad Sci U S A. 1997 May 13;94(10):5467-72. doi: 10.1073/pnas.94.10.5467.
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