- Information
- Symbol: PLA2,LHD2
- MSU: LOC_Os01g68000
- RAPdb: Os01g0907900
- Publication
- Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, 2012, Planta.
- Leafy head2, which encodes a putative RNA-binding protein, regulates shoot development of rice, 2006, Cell Res.
- PLASTOCHRON3/GOLIATH encodes a glutamate carboxypeptidase required for proper development in rice, 2009, Plant J.
- PLASTOCHRON2 Regulates Leaf Initiation and Maturation in Rice, 2006, The Plant Cell Online.
- Genbank accession number
- Key message
- These results indicate that both PLA1 and PLA2 act downstream of the GA signal transduction pathway to regulate leaf development
- Here, we present a detailed analysis of plastochron2 (pla2), a rice (Oryza sativa) mutant that exhibits shortened plastochron and precocious maturation of leaves during the vegetative phase and ectopic shoot formation during the reproductive phase
- We found that gibberellin (GA) is the major phytohormone that promotes PLA1 and PLA2 expression
- Rice PLASTOCHRON 1 (PLA1) and PLA2 genes regulate leaf maturation and plastochron, and their loss-of-function mutants exhibit small organs and rapid leaf emergence
- Here, we reported the characterization of the rice leafy-head2 (lhd2) mutant that exhibits shortened plastochron, dwarfism, reduced tiller number, and failure of phase transition from vegetative to reproductive growth
- pla3 exhibits similar phenotypes to pla1 and pla2- a shortened plastochron, precocious leaf maturation and rachis branch-to-shoot conversion in the reproductive phase
- However, in contrast to pla1 and pla2, pla3 showed pleiotropic phenotypes including enlarged embryo, seed vivipary, defects in SAM maintenance and aberrant leaf morphology
- GA induced PLA1 and PLA2 expression, and conversely the GA-inhibitor uniconazole suppressed PLA1 and PLA2 expression
- In pla1-4 and pla2-1 seedlings, expression levels of GA biosynthesis genes and the signal transduction gene were similar to those in wild-type seedlings
- GA treatment slightly down-regulated the GA biosynthesis gene GA20ox2 and up-regulated the GA-catabolizing gene GA2ox4, whereas the GA biosynthesis inhibitor uniconazole up-regulated GA20ox2 and down-regulated GA2ox4 both in wild-type and pla mutants, suggesting that the GA feedback mechanism is not impaired in pla1 and pla2
- To reveal how GA signal transduction affects the expression of PLA1 and PLA2, PLA expression in GA-signaling mutants was examined
- Anatomical and histological study revealed that the rapid emergence of leaves in lhd2 was resulted from the rapid initiation of leaf primordia whereas the reduced tiller number was a consequence of the suppression of the tiller bud outgrowth
- Here, we investigated how PLA1 and PLA2 genes are related to phytohormones
- PLA2 is expressed predominantly in young leaf primordia
- We show that PLA2 normally acts to retard the rate of leaf maturation but does so independently of PLA1, which encodes a member of the P450 family
- The similar phenotypes caused by LHD2 mutation and the conserved expression pattern of LHD2 indicated a conserved mechanism in controlling the temporal leaf initiation in grass
- Comparison of genome-scale expression profiles between wild-type and lhd2 plants suggested that LHD2 may regulate rice shoot development through KNOX and hormone-related genes
- Connection
- PLA1, PLA2~LHD2, Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, Rice PLASTOCHRON 1 (PLA1) and PLA2 genes regulate leaf maturation and plastochron, and their loss-of-function mutants exhibit small organs and rapid leaf emergence
- PLA1, PLA2~LHD2, Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, Here, we investigated how PLA1 and PLA2 genes are related to phytohormones
- PLA1, PLA2~LHD2, Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, We found that gibberellin (GA) is the major phytohormone that promotes PLA1 and PLA2 expression
- PLA1, PLA2~LHD2, Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, GA induced PLA1 and PLA2 expression, and conversely the GA-inhibitor uniconazole suppressed PLA1 and PLA2 expression
- PLA1, PLA2~LHD2, Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, In pla1-4 and pla2-1 seedlings, expression levels of GA biosynthesis genes and the signal transduction gene were similar to those in wild-type seedlings
- PLA1, PLA2~LHD2, Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, GA treatment slightly down-regulated the GA biosynthesis gene GA20ox2 and up-regulated the GA-catabolizing gene GA2ox4, whereas the GA biosynthesis inhibitor uniconazole up-regulated GA20ox2 and down-regulated GA2ox4 both in wild-type and pla mutants, suggesting that the GA feedback mechanism is not impaired in pla1 and pla2
- PLA1, PLA2~LHD2, Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, To reveal how GA signal transduction affects the expression of PLA1 and PLA2, PLA expression in GA-signaling mutants was examined
- PLA1, PLA2~LHD2, Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, In GA-insensitive mutant, gid1 and less-sensitive mutant, Slr1-d1, PLA1 and PLA2 expression was down-regulated
- PLA1, PLA2~LHD2, Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, On the other hand, the expression levels of PLA1 and PLA2 were highly enhanced in a GA-constitutive-active mutant, slr1-1, causing ectopic overexpression
- PLA1, PLA2~LHD2, Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway, These results indicate that both PLA1 and PLA2 act downstream of the GA signal transduction pathway to regulate leaf development
- PLA1, PLA2~LHD2, PLASTOCHRON3/GOLIATH encodes a glutamate carboxypeptidase required for proper development in rice, pla3 exhibits similar phenotypes to pla1 and pla2- a shortened plastochron, precocious leaf maturation and rachis branch-to-shoot conversion in the reproductive phase
- PLA1, PLA2~LHD2, PLASTOCHRON3/GOLIATH encodes a glutamate carboxypeptidase required for proper development in rice, However, in contrast to pla1 and pla2, pla3 showed pleiotropic phenotypes including enlarged embryo, seed vivipary, defects in SAM maintenance and aberrant leaf morphology
- PLA1, PLA2~LHD2, PLASTOCHRON3/GOLIATH encodes a glutamate carboxypeptidase required for proper development in rice, Double mutant analysis revealed that PLA1, PLA2 and PLA3 are regulated independently but function redundantly
- PLA2~LHD2, PLA3~OsLBD3-7~OsLBD37, PLASTOCHRON3/GOLIATH encodes a glutamate carboxypeptidase required for proper development in rice, pla3 exhibits similar phenotypes to pla1 and pla2- a shortened plastochron, precocious leaf maturation and rachis branch-to-shoot conversion in the reproductive phase
- PLA2~LHD2, PLA3~OsLBD3-7~OsLBD37, PLASTOCHRON3/GOLIATH encodes a glutamate carboxypeptidase required for proper development in rice, However, in contrast to pla1 and pla2, pla3 showed pleiotropic phenotypes including enlarged embryo, seed vivipary, defects in SAM maintenance and aberrant leaf morphology
- PLA2~LHD2, PLA3~OsLBD3-7~OsLBD37, PLASTOCHRON3/GOLIATH encodes a glutamate carboxypeptidase required for proper development in rice, Double mutant analysis revealed that PLA1, PLA2 and PLA3 are regulated independently but function redundantly
- PLA1, PLA2~LHD2, PLASTOCHRON2 Regulates Leaf Initiation and Maturation in Rice, We show that PLA2 normally acts to retard the rate of leaf maturation but does so independently of PLA1, which encodes a member of the P450 family
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