21039568
not annotated - annotated - LINNAEUS only
Identification of a novel mitochondrial protein, short postembryonic roots 1 (SPR1), involved in root development and iron homeostasis in Oryza sativa.
* A rice mutant, Oryza sativa short postembryonic roots 1 (Osspr1), has been characterized. It has short postembryonic roots, including adventitious and lateral roots, and a lower iron content in its leaves. * OsSPR1 was identified by map-based cloning. It encodes a novel mitochondrial protein with the Armadillo-like repeat domain. * Osspr1 mutants exhibited decreased root cell elongation. The iron content of the mutant shoots was significantly altered compared with that of wild-type shoots. A similar pattern of alteration of manganese and zinc concentrations in shoots was also observed. Complementation of the mutant confirmed that OsSPR1 is involved in post-embryonic root elongation and iron homeostasis in rice. OsSPR1 was found to be ubiquitously expressed in various tissues throughout the plant. The transcript abundance of various genes involved in iron uptake and signaling via both strategies I and II was similar in roots of wild-type and mutant plants, but was higher in the leaves of mutant plants. * Thus, a novel mitochondrial protein that is involved in root elongation and plays a role in metal ion homeostasis has been identified.
Ann file
T1 Species 138 150 Oryza sativa
N1 Reference T1 Taxonomy:4530
T2 Species 158 162 rice
N2 Reference T2 Taxonomy:4530
T3 Species 171 211 Oryza sativa short postembryonic roots 1
N3 Reference T3 Taxonomy:4530
T4 Species 213 219 Osspr1
N4 Reference T4 Taxonomy:4530
T5 Out-of-scope 364 370 OsSPR1
N5 Reference T5 Taxonomy:4530
T6 Out-of-scope 794 800 OsSPR1
N6 Reference T6 Taxonomy:4530
T7 Out-of-scope 877 883 OsSPR1
N7 Reference T7 Taxonomy:4530
T8 Species 871 875 rice
N8 Reference T8 Taxonomy:4530 Oryza sativa
#1 AnnotatorNotes T5 TODO check
#2 AnnotatorNotes T6 TODO check
#3 AnnotatorNotes T7 TODO check
T9 Species 490 496 Osspr1
N9 Reference T9 Taxonomy:4530