Transcriptome profiling of peanut (Arachis hypogaea) gynophores in gravitropic response

Li, H.F. and Chen, X.P. and Zhu, F.H. and et al, . (2013) Transcriptome profiling of peanut (Arachis hypogaea) gynophores in gravitropic response. Functional Plant Biology. pp. 1-12.

PDF - Published Version
| Preview


Peanut (Arachis hypogaea L.) produces flowers aerially, but the fruit develops underground. This process is mediated by the gynophore, which always grows vertically downwards. The genetic basis underlying gravitropic bending of gynophores is not well understood. To identify genes related to gynophore gravitropism, gene expression profiles of gynophores cultured in vitro with tip pointing upward (gravitropic stimulation sample) and downward (control) at both 6 and 12 h were compared through a high-density peanut microarray. After gravitropic stimulation, there were 174 differentially expressed genes, including 91 upregulated and 83 downregulated genes at 6 h, and 491 differentially expressed genes including 129 upregulated and 362 downregulated genes at 12 h. The differentially expressed genes identified were assigned to 24 functional categories. Twenty pathways including carbon fixation, aminoacyl-tRNA biosynthesis, pentose phosphate pathway, starch and sucrose metabolism were identified. The quantitative real-time PCR analysis was performed for validation of microarray results. Our study paves the way to better understand the molecular mechanisms underlying the peanut gynophore gravitropism.

Item Type: Article
Additional Information: ThisresearchwasfundedbygrantsfromNationalNaturalScienceFoundation ofChina(No.31200155and31271767),PearlRiverScienceandTechnology Nova of Guangzhou(No. 2011J2200035), Scienceand Technology Planning Project of Guangdong Province (No. 2011B010500019, 2012B050700007), and supported by the earmarked fund for Modern Agro-industry Technology Research System (CARS-14) and foundation of CRI/GDAAS (2012 – 2).
Uncontrolled Keywords: gravitropism, peanut gynophore, transcriptome profiling.
Author Affiliation: Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
Subjects: Crop Improvement
Divisions: Groundnut
Depositing User: Mr Siva Shankar
Date Deposited: 22 Aug 2013 03:31
Last Modified: 22 Aug 2013 03:31
Official URL:

Actions (login required)

View Item View Item