Regulatory role of FZP in the determination of panicle branching and spikelet formation in rice

FRIZZLE PANICLE (FZP) and RFL/ABERRANT PANICLE ORGANIZATION 2 (APO2) play important roles in regulating the ABCDE floral organ identity genes. However, the relationships among FZP and these floral identity genes in the regulation of panicle formation remain unclear. Here, we used the novel mutant fz...

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Main Authors:	Bai, Xufeng, Huang, Yong, Mao, Donghai, Wen, Mi, Zhang, Li, Xing, Yongzhong
Format:	Online
Language:	English
Published:	Nature Publishing Group 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4705600/

id	pubmed-4705600
recordtype	oai_dc
spelling	pubmed-47056002016-01-20 Regulatory role of FZP in the determination of panicle branching and spikelet formation in rice Bai, Xufeng Huang, Yong Mao, Donghai Wen, Mi Zhang, Li Xing, Yongzhong Article FRIZZLE PANICLE (FZP) and RFL/ABERRANT PANICLE ORGANIZATION 2 (APO2) play important roles in regulating the ABCDE floral organ identity genes. However, the relationships among FZP and these floral identity genes in the regulation of panicle formation remain unclear. Here, we used the novel mutant fzp-11, wild-type and FZP-overexpressing plants to compare the expression of these genes during panicle development by real-time PCR and in situ hybridization. The results indicate that FZP is a major negative regulator of RFL/APO2 and determines the transition from panicle branching to spikelet formation. Moreover, overexpression of FZP severely represses axillary meristem formation in both the vegetative and reproductive phases and the outgrowth of secondary branches in panicle. FZP overexpression positively regulates the expression of a subset of the class B genes, AGL6 genes (OsMADS6 and OsMADS17) as well as class E genes (OsMADS1, OsMADS7 and OsMADS8) in floral meristem (FM). Thus, it suggested that FZP could specify floral organ identity by regulating the related OsMADS-box genes. Nature Publishing Group 2016-01-08 /pmc/articles/PMC4705600/ /pubmed/26744119 http://dx.doi.org/10.1038/srep19022 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Bai, Xufeng Huang, Yong Mao, Donghai Wen, Mi Zhang, Li Xing, Yongzhong
spellingShingle	Bai, Xufeng Huang, Yong Mao, Donghai Wen, Mi Zhang, Li Xing, Yongzhong Regulatory role of FZP in the determination of panicle branching and spikelet formation in rice
author_facet	Bai, Xufeng Huang, Yong Mao, Donghai Wen, Mi Zhang, Li Xing, Yongzhong
author_sort	Bai, Xufeng
title	Regulatory role of FZP in the determination of panicle branching and spikelet formation in rice
title_short	Regulatory role of FZP in the determination of panicle branching and spikelet formation in rice
title_full	Regulatory role of FZP in the determination of panicle branching and spikelet formation in rice
title_fullStr	Regulatory role of FZP in the determination of panicle branching and spikelet formation in rice
title_full_unstemmed	Regulatory role of FZP in the determination of panicle branching and spikelet formation in rice
title_sort	regulatory role of fzp in the determination of panicle branching and spikelet formation in rice
description	FRIZZLE PANICLE (FZP) and RFL/ABERRANT PANICLE ORGANIZATION 2 (APO2) play important roles in regulating the ABCDE floral organ identity genes. However, the relationships among FZP and these floral identity genes in the regulation of panicle formation remain unclear. Here, we used the novel mutant fzp-11, wild-type and FZP-overexpressing plants to compare the expression of these genes during panicle development by real-time PCR and in situ hybridization. The results indicate that FZP is a major negative regulator of RFL/APO2 and determines the transition from panicle branching to spikelet formation. Moreover, overexpression of FZP severely represses axillary meristem formation in both the vegetative and reproductive phases and the outgrowth of secondary branches in panicle. FZP overexpression positively regulates the expression of a subset of the class B genes, AGL6 genes (OsMADS6 and OsMADS17) as well as class E genes (OsMADS1, OsMADS7 and OsMADS8) in floral meristem (FM). Thus, it suggested that FZP could specify floral organ identity by regulating the related OsMADS-box genes.
publisher	Nature Publishing Group
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4705600/
_version_	1613521377329938432

Regulatory role of FZP in the determination of panicle branching and spikelet formation in rice

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