Sequential expression of two late nodulin genes in the infected cells of alfalfa root nodules.
Sequential expression of two late nodulin genes in the infected cells of alfalfa root nodules.
复制标题
苜蓿根瘤感染细胞中两个晚期结节蛋白基因的顺序表达。
DOI：
10.1094/mpmi-5-430
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
Dunn,K
中科院分区：
文献类型：
--
作者：
Allen,T;Raja,S;Ganter,G;Dunn,K
Nms-22和豆血红蛋白（Lb）基因仅在苜蓿根瘤的感染细胞中表达。这两个晚期的根瘤素基因的表达起源于根瘤的共生区域内不同的细胞边界。Nms-22基因在所有感染的细胞中表达，包括那些紧邻分生组织区域的细胞。Lb基因表达诱导在老年感染细胞和结节的成熟区域是最突出的。尽管这种基因表达的时间分离，但Nms-22和Lb基因都在由巴卡A突变体引起的结节中表达，其中类杆菌发育在从感染线释放后立即被阻断。
The Nms-22 and leghemoglobin (Lb) genes are expressed exclusively in the infected cells of alfalfa root nodules. Expression of these two late nodulin genes originated at distinct cellular boundaries within the symbiotic region of the nodule. The Nms-22 gene was expressed in all infected cells, including those just adjacent to the meristematic region. Lb gene expression was induced in older infected cells and was most prominent in the mature region of the nodule. Despite this temporal separation of gene expression, both the Nms-22 and Lb genes were expressed in nodules elicited by bacA mutants in which bacteroid development has been blocked just after release from the infection thread.