Difference between revisions of "Os12g0465700"
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| − | [[File:109-Os12g0465700.png|right|thumb| | + | [[File:109-Os12g0465700.png|right|thumb|327px|'''Figure 1.''' ''Phenotypes of the dec-1 mutant.<ref name="ref1" />.'']] |
===Function=== | ===Function=== | ||
* '''''DEC''''' regulates the phyllotactic pattern in rice. | * '''''DEC''''' regulates the phyllotactic pattern in rice. | ||
Latest revision as of 16:12, 17 October 2016
The rice Os12g0465700 was reported as DEC in 2012 [1] by researchers from Japan.
Contents
Annotated Information
Figure 1. Phenotypes of the dec-1 mutant.[1].
Function
- DEC regulates the phyllotactic pattern in rice.
- DEC has opposite functions in the shoot apical meristem and root apical meristem.
- DEC encodes a plant-specific protein containing a glutamine-rich region and a conserved motif.
- DEC controls the phyllotactic pattern by affecting cytokinin signaling in rice.
Expression
- Expression analysis showed that several type A response regulator genes that act in the cytokinin signaling pathway were down-regulated in the dec mutant.
Phenotypic analysis
- Two allelic mutants, dec-1 and dec-2, were originally identified as embryonic mutants exhibiting abnormally shaped mature embryos.
- In mature dec-1 embryos, although all embryonic organs and three leaf primordia were present, a malformed scutellum and an enlarged SAM were observed (Figure 1a,b).
- After germination, the majority of dec-1 seedlings produced short and erect leaves with an abnormal phyllotaxy (Figure 1c).
- Cross-sections of the shoot apex revealed that the wild-type displayed a distichous phyllotaxy with a divergence angle of 180°. In contrast, approximately half of dec-1 seedlings exhibited a decussate phyllotaxy, except for the first embryonic leaf (Figure 1d,e).
- Thus, the dec mutation caused conversion of a distichous phyllotaxy to a decussate phyllotaxy during early vegetative development.
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Labs working on this gene
- Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, 113-8657, Japan
- RIKEN Plant Science Center, Tsurumi, Yokohama, 230-0045, Japan
