RRC ID 12609
Author Ushijima T, Matsusaka H, Jikuya H, Ogawa M, Satoh H, Kumamaru T.
Title Genetic analysis of cysteine-poor prolamin polypeptides reduced in the endosperm of the rice esp1 mutant.
Journal Plant Sci.
Abstract The esp1 mutant CM21 specifically exhibits reduced levels of cysteine-poor (CysP) prolamin bands with pIs of 6.65, 6.95, 7.10, and 7.35 in rice seed. Matrix-assisted laser desorption-ionization time-of-flight mass spectrometry (MALDI-TOF MS) analysis demonstrated that the bands with pIs 6.65, 6.95, and 7.35 are encoded by different structural genes. These results suggest that the Esp1 locus encodes a regulatory factor involved in the synthesis and/or accumulation of CysP prolamin molecules. Isoelectric focusing (IEF) analysis of CysP prolamins in chromosome substitution lines showed that structural genes for bands with pI values of 6.95, 7.10, and 7.35, which are reduced in esp1 mutant lines, are located as a gene cluster in the 44.2 cM region on chromosome 5.
Volume 181(2)
Pages 125-31
Published 2011-8
DOI 10.1016/j.plantsci.2011.04.011
PII S0168-9452(11)00122-1
PMID 21683877
MeSH Chromosomes, Plant / genetics Cysteine* / metabolism Electrophoresis, Gel, Two-Dimensional Electrophoresis, Polyacrylamide Gel Endosperm / chemistry Endosperm / genetics Endosperm / metabolism Isoelectric Focusing Multigene Family Mutation Oryza / chemistry Oryza / genetics* Oryza / metabolism Plant Proteins / genetics Plant Proteins / metabolism* Prolamins / chemistry Prolamins / genetics* Prolamins / metabolism RNA, Plant / genetics Seeds / chemistry Seeds / genetics Seeds / metabolism Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / methods
IF 3.712
Times Cited 7
Rice Induced Mutation Lines