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Mutations in a gene for plastid ribosomal protein S6‐like protein reveal a novel developmental process required for the correct organization of lateral root meristem in Arabidopsis
Author(s) -
Horiguchi Gorou,
Kodama Hiroaki,
Iba Koh
Publication year - 2003
Publication title -
the plant journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.058
H-Index - 269
eISSN - 1365-313X
pISSN - 0960-7412
DOI - 10.1046/j.1365-313x.2003.01651.x
Subject(s) - meristem , plastid , biology , arabidopsis , primordium , lateral root , arabidopsis thaliana , microbiology and biotechnology , mutant , protein subcellular localization prediction , gene , ribosomal protein , botany , genetics , chloroplast , ribosome , rna
Summary Arabidopsis rfc3 mutants have previously been isolated with an altered fatty acid composition of membrane lipids. In this study, rfc3 was found to have a sucrose‐conditional defect in the patterning of distal elements in the lateral root meristem. By utilizing this feature, a sucrose‐sensitive process important for lateral root development was localized to the growing portion of rfc3 primary root. Because lateral root formation occurs at a later stage, this finding suggests the existence of an RFC3‐dependent, non‐primordium autonomous signal playing a role in the organization of lateral root meristem. Map‐based cloning of RFC3 gene revealed that it encodes a plastid‐localized ribosomal protein S6‐like protein and provides a potential link between control of plastid gene expression and LR development.