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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erw002
|2 doi
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|a pubmed24n0856.xml
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|a (DE-627)NLM256986991
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|a (NLM)26826218
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
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|a Liu, Jing Miao
|e verfasserin
|4 aut
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| 245 |
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|a Loose Plant Architecture1 (LPA1) determines lamina joint bending by suppressing auxin signalling that interacts with C-22-hydroxylated and 6-deoxo brassinosteroids in rice
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|c 2016
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 13.12.2016
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|a Date Revised 13.11.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a Lamina inclination is a key agronomical character that determines plant architecture and is sensitive to auxin and brassinosteroids (BRs). Loose Plant Architecture1 (LPA1) in rice (Oryza sativa) and its Arabidopsis homologues (SGR5/AtIDD15) have been reported to control plant architecture and auxin homeostasis. This study explores the role of LPA1 in determining lamina inclination in rice. LPA1 acts as a positive regulator to suppress lamina bending. Genetic and biochemical data indicate that LPA1 suppresses the auxin signalling that interacts with C-22-hydroxylated and 6-deoxo BRs, which regulates lamina inclination independently of OsBRI1. Mutant lpa1 plants are hypersensitive to indole-3-acetic acid (IAA) during the lamina inclination response, which is suppressed by the brassinazole (Brz) inhibitor of C-22 hydroxylase involved in BR synthesis. A strong synergic effect is detected between lpa1 and d2 (the defective mutant for catalysis of C-23-hydroxylated BRs) during IAA-mediated lamina inclination. No significant interaction between LPA1 and OsBRI1 was identified. The lpa1 mutant is sensitive to C-22-hydroxylated and 6-deoxo BRs in the d61-1 (rice BRI1 mutant) background. We present evidence verifying that two independent pathways function via either BRs or BRI1 to determine IAA-mediated lamina inclination in rice. RNA sequencing analysis and qRT-PCR indicate that LPA1 influences the expression of three OsPIN genes (OsPIN1a, OsPIN1c and OsPIN3a), which suggests that auxin flux might be an important factor in LPA1-mediated lamina inclination in rice
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a 6-deoxos BRs.
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|a Auxin
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|a C-22-hydroxylated BRs
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|a Loose Plant Architecture1 (LPA1)
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|a OsPINs
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|a lamina inclination
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|a lamina joints
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|a plant architecture
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|a rice (Oryza sativa)
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| 650 |
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|a Brassinosteroids
|2 NLM
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| 650 |
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|a Indoleacetic Acids
|2 NLM
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| 650 |
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|a Plant Proteins
|2 NLM
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| 700 |
1 |
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|a Park, Soon Ju
|e verfasserin
|4 aut
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|a Huang, Jin
|e verfasserin
|4 aut
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|a Lee, Eun Jin
|e verfasserin
|4 aut
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|a Xuan, Yuan Hu
|e verfasserin
|4 aut
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|a Je, Byoung Il
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|a Kumar, Vikranth
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|a Priatama, Ryza A
|e verfasserin
|4 aut
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|a Raj K, Vimal
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|a Kim, Sung Hoon
|e verfasserin
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|a Min, Myung Ki
|e verfasserin
|4 aut
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|a Cho, Jun Hyeon
|e verfasserin
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|a Kim, Tae Ho
|e verfasserin
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|a Chandran, Anil Kumar Nalini
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|a Jung, Ki Hong
|e verfasserin
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|a Takatsuto, Suguru
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|a Fujioka, Shozo
|e verfasserin
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|a Han, Chang-Deok
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 67(2016), 6 vom: 08. März, Seite 1883-95
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
1 |
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|g volume:67
|g year:2016
|g number:6
|g day:08
|g month:03
|g pages:1883-95
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|u http://dx.doi.org/10.1093/jxb/erw002
|3 Volltext
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|a AR
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|d 67
|j 2016
|e 6
|b 08
|c 03
|h 1883-95
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