PMID- 25040350
OWN - NLM
STAT- MEDLINE
DCOM- 20151208
LR  - 20150304
IS  - 1744-7909 (Electronic)
IS  - 1672-9072 (Linking)
VI  - 57
IP  - 3
DP  - 2015 Mar
TI  - The regulatory network mediated by circadian clock genes is related to heterosis 
      in rice.
PG  - 300-12
LID - 10.1111/jipb.12240 [doi]
AB  - Exploitation of heterosis in rice (Oryza sativa L.) has contributed greatly to 
      global food security. In this study, we generated three sets of reciprocal F1 
      hybrids of indica and japonica subspecies to evaluate the relationship between 
      yield heterosis and the circadian clock. There were no differences in trait 
      performance or heterosis between the reciprocal hybrids, indicating no maternal 
      effects on heterosis. The indica-indica and indica-japonica reciprocal F1 hybrids 
      exhibited pronounced heterosis for chlorophyll and starch content in leaves and 
      for grain yield/biomass. In contrast, the japonica-japonica F1 hybrids showed low 
      heterosis. The three circadian clock genes investigated expressed in an 
      above-high-parent pattern (AHP) at seedling stage in all the hybrids. The five 
      genes downstream of the circadian clock, and involved in chlorophyll and starch 
      metabolic pathways, were expressed in AHP in hybrids with strong better-parent 
      heterosis (BPH). Similarly, three of these five genes in the japonica-japonica F1 
      hybrids showing low BPH were expressed in positive overdominance, but the other 
      two genes were expressed in additive or negative overdominance. These results 
      indicated that the expression patterns of circadian clock genes and their 
      downstream genes are associated with heterosis, which suggests that the circadian 
      rhythm pathway may be related to heterosis in rice.
CI  - (c) 2014 Institute of Botany, Chinese Academy of Sciences.
FAU - Shen, Guojing
AU  - Shen G
AD  - National Key Laboratory of Crop Genetic Improvement and National Center of Plant 
      Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, 430070, China.
FAU - Hu, Wei
AU  - Hu W
FAU - Zhang, Bo
AU  - Zhang B
FAU - Xing, Yongzhong
AU  - Xing Y
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20140925
PL  - China (Republic : 1949- )
TA  - J Integr Plant Biol
JT  - Journal of integrative plant biology
JID - 101250502
RN  - 1406-65-1 (Chlorophyll)
RN  - 9005-25-8 (Starch)
SB  - IM
MH  - Base Sequence
MH  - Biosynthetic Pathways/genetics
MH  - Chlorophyll/metabolism
MH  - Circadian Clocks/*genetics
MH  - Crosses, Genetic
MH  - Gene Expression Regulation, Developmental
MH  - Gene Expression Regulation, Plant
MH  - *Gene Regulatory Networks
MH  - *Genes, Plant
MH  - Hybrid Vigor/*genetics
MH  - Hybridization, Genetic
MH  - Inbreeding
MH  - Molecular Sequence Data
MH  - Oryza/anatomy & histology/*genetics/*physiology
MH  - Seedlings/genetics
MH  - Starch/biosynthesis
MH  - Up-Regulation/genetics
OTO - NOTNLM
OT  - Circadian clock
OT  - better-parent heterosis
OT  - biomass
OT  - overdominance
OT  - yield
EDAT- 2014/07/22 06:00
MHDA- 2015/12/15 06:00
CRDT- 2014/07/22 06:00
PHST- 2014/06/01 00:00 [received]
PHST- 2014/07/07 00:00 [accepted]
PHST- 2014/07/22 06:00 [entrez]
PHST- 2014/07/22 06:00 [pubmed]
PHST- 2015/12/15 06:00 [medline]
AID - 10.1111/jipb.12240 [doi]
PST - ppublish
SO  - J Integr Plant Biol. 2015 Mar;57(3):300-12. doi: 10.1111/jipb.12240. Epub 2014 
      Sep 25.