Genome-Wide Classification and Evolutionary and Functional Analyses of the VQ Family
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VQ protein, contain a conserved and short FxxxVQxLTG amino acid sequence motif. Some VQ proteins play important roles in development process and abiotic/biotic stress in plants. However, there has not been a systematic study of the VQ family in plants. The results revealed that Group I genes are conserved in plant development in angiosperms; Group IV and Group X in eudicots and Group I, Group VI and Group VII in monocots are involved in drought response; Group I and Group IV are the most important groups and conservational in response to salt stress in eudicots but not in monocots; VQ genes in Group II and Group IV which responded to cold stress were overlapped in angiosperms; Group IV, Group V, Group VI and Group IX in eudicots and Group VI in monocots play key roles in response to ABA treatment; Group IV in eudicots while Group V and Group VI are irreplaceable in response to biotic stress in monocots. We propose that this study provides solid foundations for the investigation of the functions and evolution of VQ genes in angiosperms.
KeywordsVQ motif-containing proteins WRKY transcription factors Angiosperms Evolution Abiotic stress Biotic stress
PHY-INTERACTING FACTOR 1
SIGMA FACTOR-BINDING PROTEIN1
SIGMA FACTOR-BINDING PROTEIN2
Quantitative real-time PCR
We would like to thank the reviewers for their helpful comments on the original manuscript.
H.C. designed the study and performed the experiments. M.Z. performed the molecular analyses. Y.L., M.C., and Q.H. analyzed the data. J.H. assisted with the data interpretation and manuscript writing. Y.Q. and H.C. conceived the study and wrote the manuscript.
This work was supported by the National Nature Science Foundation of China (U1605212; 31700279; 31522009), the Fujian Innovative Center for Germplasm Resources and Innovation project of the Characteristic Horticultural Crop Seed Industry (KLA15001D), the Fujian Agriculture and Forestry University International collaboration project (KXb16006A), and a Newton Advanced Fellowship to Y.Q.
Compliance with Ethical Standards
The authors declare that they have no competing interests.
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