PMID- 28040882
OWN - NLM
STAT- MEDLINE
DCOM- 20180222
LR  - 20200930
IS  - 1469-8137 (Electronic)
IS  - 0028-646X (Linking)
VI  - 214
IP  - 2
DP  - 2017 Apr
TI  - UNBRANCHED3 regulates branching by modulating cytokinin biosynthesis and 
      signaling in maize and rice.
PG  - 721-733
LID - 10.1111/nph.14391 [doi]
AB  - UNBRANCHED3 (UB3), a member of the SQUAMOSA promoter binding protein-like (SPL) 
      gene family, regulates kernel row number by negatively modulating the size of the 
      inflorescence meristem in maize. However, the regulatory pathway by which UB3 
      mediates branching remains unknown. We introduced the UB3 into rice and maize to 
      reveal its effects in the two crop plants, respectively. Furthermore, we 
      performed transcriptome sequencing and protein-DNA binding assay to elucidate the 
      regulatory pathway of UB3. We found that UB3 could bind and regulate the 
      promoters of LONELY GUY1 (LOG1) and Type-A response regulators (ARRs), which 
      participate in cytokinin biosynthesis and signaling. Overexpression of exogenous 
      UB3 in rice (Oryza sativa) dramatically suppressed tillering and panicle 
      branching as a result of a greater decrease in the amount of active cytokinin. By 
      contrast, moderate expression of UB3 suppressed tillering slightly, but promoted 
      panicle branching by cooperating with SPL genes, resulting in a higher grain 
      number per panicle in rice. In maize (Zea mays) ub3 mutant with an increased 
      kernel row number, UB3 showed a low expression but cytokinin biosynthesis-related 
      genes were up-regulated and degradation-related genes were down-regulated. These 
      results suggest that UB3 regulates vegetative and reproductive branching by 
      modulating cytokinin biosynthesis and signaling in maize and rice.
CI  - (c) 2016 The Authors. New Phytologist (c) 2016 New Phytologist Trust.
FAU - Du, Yanfang
AU  - Du Y
AD  - Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 
      Wuhan, 430070, China.
FAU - Liu, Lei
AU  - Liu L
AD  - Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 
      Wuhan, 430070, China.
FAU - Li, Manfei
AU  - Li M
AD  - Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 
      Wuhan, 430070, China.
FAU - Fang, Shuang
AU  - Fang S
AD  - National Centre for Plant Gene Research (Beijing), Institute of Genetics and 
      Developmental Biology, Chinese Academy of Sciences, Beijing, 100049, China.
FAU - Shen, Xiaomeng
AU  - Shen X
AD  - Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 
      Wuhan, 430070, China.
FAU - Chu, Jinfang
AU  - Chu J
AD  - National Centre for Plant Gene Research (Beijing), Institute of Genetics and 
      Developmental Biology, Chinese Academy of Sciences, Beijing, 100049, China.
FAU - Zhang, Zuxin
AU  - Zhang Z
AD  - Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 
      Wuhan, 430070, China.
AD  - Hubei Collaborative Innovation Center for Grain Crops, Jingzhou, 434025, China.
LA  - eng
PT  - Journal Article
DEP - 20170101
PL  - England
TA  - New Phytol
JT  - The New phytologist
JID - 9882884
RN  - 0 (Cytokinins)
RN  - 0 (Plant Proteins)
SB  - IM
MH  - Biosynthetic Pathways/genetics
MH  - Cytokinins/*biosynthesis
MH  - Gene Expression Regulation, Plant
MH  - Inflorescence/anatomy & histology
MH  - Mutation/genetics
MH  - Oryza/anatomy & histology/genetics/*metabolism
MH  - Plant Proteins/*metabolism
MH  - Plants, Genetically Modified
MH  - Regeneration
MH  - *Signal Transduction
MH  - Transcriptome/genetics
MH  - Zea mays/*metabolism
OTO - NOTNLM
OT  - UNBRANCHED3
OT  - cytokinin
OT  - inflorescence meristem
OT  - kernel row number
OT  - panicle branch
OT  - tiller
EDAT- 2017/01/04 06:00
MHDA- 2018/02/23 06:00
CRDT- 2017/01/02 06:00
PHST- 2016/07/28 00:00 [received]
PHST- 2016/11/16 00:00 [accepted]
PHST- 2017/01/04 06:00 [pubmed]
PHST- 2018/02/23 06:00 [medline]
PHST- 2017/01/02 06:00 [entrez]
AID - 10.1111/nph.14391 [doi]
PST - ppublish
SO  - New Phytol. 2017 Apr;214(2):721-733. doi: 10.1111/nph.14391. Epub 2017 Jan 1.