- Information
- Symbol: LA1,LAZY1
- MSU: LOC_Os11g29840
- RAPdb: Os11g0490600
- Publication
- LAZY1 controls rice shoot gravitropism through regulating polar auxin transport, 2007, Cell Res.
- Over-expression of OsPIN2 leads to increased tiller numbers, angle and shorter plant height through suppression of OsLAZY1, 2012, Plant Biotechnol J.
- Identification of the gravitropism-related rice gene LAZY1 and elucidation of LAZY1-dependent and -independent gravity signaling pathways, 2007, Plant Cell Physiol.
- Loose Plant Architecture1, an INDETERMINATE DOMAIN protein involved in shoot gravitropism, regulates plant architecture in rice, 2013, Plant Physiol.
- LAZY genes mediate the effects of gravity on auxin gradients and plant architecture., 2017, Plant Physiol.
- LAZY1 Controls Tiller Angle and Shoot Gravitropism by Regulating the Expression of Auxin Transporters and Signaling Factors in Rice, 2020, Plant Cell Physiol.
- Genbank accession number
- Key message
- We show that LA1, a novel grass-specific gene, is temporally and spatially expressed, and plays a negative role in polar auxin transport (PAT)
- Here we report the cloning of the LAZY1 (LA1) gene that regulates shoot gravitropism by which the rice tiller angle is controlled
- Loss-of-function of LA1 enhances PAT greatly and thus alters the endogenous IAA distribution in shoots, leading to the reduced gravitropism, and therefore the tiller-spreading phenotype of rice plants
- LA1 is able to rescue the tiller angle and shoot gravitropism defects observed in la1-SN
- LA1 is required to regulate the expression of auxin transporters and signaling factors that control shoot gravitropism and tiller angle
- The results show that LA1 may be involved in the nucleosome and chromatin assembly, and protein-DNA interactions to control gene expression, shoot gravitropism, and tiller angle
- Our results provide new insight into the mechanisms whereby LA1 controls shoot gravitropism and tiller angle in rice
- Connection
- LA1~LAZY1, OsBRXL4, OsBRXL4 Regulates Shoot Gravitropism and Rice Tiller Angle through Affecting LAZY1 Nuclear Localization., We showed that the interaction between OsBRXL4 and LA1 occurs at the plasma membrane and that their interaction determines LA1 nuclear localization
- LA1~LAZY1, OsBRXL4, OsBRXL4 Regulates Shoot Gravitropism and Rice Tiller Angle through Affecting LAZY1 Nuclear Localization., Further genetic evidence confirmed that OsBRXL4 controls rice tiller angle by affecting LA1 nuclear localization
- LA1~LAZY1, OsBRXL4, OsBRXL4 Regulates Shoot Gravitropism and Rice Tiller Angle through Affecting LAZY1 Nuclear Localization., Consistent with this, OsBRXL4 regulates the shoot gravitropism through affecting polar auxin transport as did LA1
- LA1~LAZY1, OsBRXL4, OsBRXL4 Regulates Shoot Gravitropism and Rice Tiller Angle through Affecting LAZY1 Nuclear Localization., OsBRXL4 Regulates Shoot Gravitropism and Rice Tiller Angle through Affecting LAZY1 Nuclear Localization.
- LA1~LAZY1, OsHOX28, OsHOX1 and OsHOX28 Redundantly Shape Rice Tiller Angle by Reducing HSFA2D Expression and Auxin Content, In contrast to HSFA2D and LA1, OsHOX1 and OsHOX28 attenuated lateral auxin transport, thus repressing the expression of WUSCHEL-RELATED HOMEOBOX 6 (WOX6) and WOX11 in the lower side of the shoot base of plants subjected to gravistimulation
- LA1~LAZY1, OsHox1, OsHOX1 and OsHOX28 Redundantly Shape Rice Tiller Angle by Reducing HSFA2D Expression and Auxin Content, In contrast to HSFA2D and LA1, OsHOX1 and OsHOX28 attenuated lateral auxin transport, thus repressing the expression of WUSCHEL-RELATED HOMEOBOX 6 (WOX6) and WOX11 in the lower side of the shoot base of plants subjected to gravistimulation
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