Abstract
BackgroundE2F/DP proteins have been shown to regulate genes implicated in cell cycle control and DNA repair. However, to date, research into the potential role of the Moso bamboo E2F/DP family has been limited.ResultsHere, we identified 23 E2F/DPs in the Moso bamboo genome, including nine E2F genes, six DP genes, eight DEL genes and one gene with a partial E2F domain. An estimation of the divergence time of the paralogous gene pairs suggested that the E2F/DP family expansion primarily occurred through a whole-genome duplication event. A regulatory element and coexpression network analysis indicated that E2F/DP regulated the expression of cell cycle-related genes. A yeast two-hybrid assay and expression analysis based on transcriptome data and in situ hybridization indicated that the PheE2F-PheDP complex played important roles in winter Moso bamboo shoot growth. The qRT-PCR results showed that the PheE2F/DPs exhibited diverse expression patterns in response to drought and salt treatment and diurnal cycles.ConclusionOur findings provide novel insights into the Moso bamboo E2F/DP family and partial experimental evidence for further functional verification of the PheE2F/DPs.
Highlights
E2F/DP proteins have been shown to regulate genes implicated in cell cycle control and DNA repair
Identification and classification of the PheE2F/DP gene family A total of 24 potential PheE2F/DP genes were identified in the Moso bamboo genome, including a PH02Gene25981.t1 with an incomplete E2F domain
In conclusion, a total of 23 PheE2F/DPs were identified in the Moso bamboo genome, including nine E2F, six DP, and eight DEL genes
Summary
E2F/DP proteins have been shown to regulate genes implicated in cell cycle control and DNA repair. To date, research into the potential role of the Moso bamboo E2F/DP family has been limited. Moso bamboo (Phyllostachys edulis) generates nearly 5 billion US dollars annually in economic value. It is the most important non-timber product used for commercial purposes in East Asia due to its fast growth rate [1, 2]. During Moso bamboo shoot growth, the height increase was created by simultaneous cell division and cell elongation. Cell division played critical roles during the winter and early growth periods, while cell elongation was predominant during the late growth period.
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