Journal
PLANT PHYSIOLOGY AND BIOCHEMISTRY
Volume 46, Issue 2, Pages 219-225Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.plaphy.2007.10.021
Keywords
cytokinin receptor; nodule; senescence; histidine kinase; signal transduction
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Here we report the isolation of a new cytokinin receptor homologue, LaHK1, from lupin (Lupinus albus) root nodules. LaHK1 transcript accumulation was detected in different plant organs, and expression was analyzed throughout nodule development. We observed notably higher expression in nodule primordia and young nodules compared to the root or to mature nodules. We also detected elevated transcript accumulation in naturally senescent nodules and in senescent nodules subjected to foliar dark stress. The results could be an indication of a putative role of this cytokinin receptor homologue in nodule development, from morphogenesis through senescence. (c) 2007 Elsevier Masson SAS. All rights reserved.
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