Coba de la Peña Teodoro, Cárcamo Claudia B, Almonacid Luis, Zaballos Angel, Lucas M Mercedes, Balomenos Dimitrios, Pueyo José J
Department of Plant Physiology and Ecology, Instituto de Recursos Naturales, Centro de Ciencias Medioambientales, CSIC, Serrano 115-bis, 28006 Madrid, Spain.
Planta. 2008 Mar;227(4):769-79. doi: 10.1007/s00425-007-0655-3. Epub 2007 Nov 6.
A new cytokinin receptor homologue, MsHK1, was isolated from Medicago sativa root nodules. MsHK1 expression was induced in alfalfa seedlings by exogenous application of the cytokinin trans-zeatin. Transcript accumulation was detected in different plant organs. MsHK1 expression was induced by salt stress in alfalfa roots, leaves and nodules, and transcript accumulation in the vascular bundles pointed to a putative role in osmosensing for MsHK1 and/or other close cytokinin receptor homologues. Expression in the meristem and the invasion zone of the nodule suggest a role for cytokinin receptors in cytokinin sensing during nodule cell division and differentiation.
从紫花苜蓿根瘤中分离出一种新的细胞分裂素受体同源物MsHK1。通过外源施加细胞分裂素反式玉米素，MsHK1在苜蓿幼苗中被诱导表达。在不同植物器官中检测到了转录本积累。盐胁迫可诱导苜蓿根、叶和根瘤中的MsHK1表达，维管束中的转录本积累表明MsHK1和/或其他紧密的细胞分裂素受体同源物在渗透感应中可能发挥作用。在根瘤的分生组织和侵染区中的表达表明细胞分裂素受体在根瘤细胞分裂和分化过程中的细胞分裂素感知中发挥作用。
