The Moso Bamboo D-Type Cell Cycle Protein Family: Genome Organization, Phylogeny, and Expression Patterns

Author:

Fang Hui1,Mu Changhong1,Jiang Jutang1,Gao Jian1ORCID,Cheng Zhanchao1

Affiliation:

1. Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, International Center for Bamboo and Rattan, Beijing 100102, China

Abstract

Cell cycle proteins and cyclin-dependent kinases (CDKs) play a vital role in the control of cell division, and their complexes form a powerful driving force in pushing cell cycle progression. D-type cyclins (CycDs) are essential for interpreting outside mitogenic signals and regulating the G1 phase. At least 19 distinct CycDs are present in the Moso bamboo (Phyllostachys edulis) genome, belonging to subgroups identified previously in other plants. Silico analysis validated the representative distinctive cyclin domains of each CycD in Moso bamboo, revealing that the genomic architectures of these genes were identical to those of their orthologs in Arabidopsis and rice. Both the phylogeny and covariance suggested that PheCycDs were structurally conserved and had undergone gene duplication. Transcriptome data analysis related to different tissues revealed that most CycDs were highly expressed in Moso bamboo shoots. The addition of growth hormone (NAA) significantly increased the transcript levels of PheCycD4;4, D5;1, D5;2, and D6;1 for a short period of time (6 h), and inhibitors (PCIB) also greatly decreased their expression. These results improved the understanding of PheCycDs in our study, notably in relation to auxin response, and offered an initial insight into the expression pattern and functional mining of the PheCycD gene family.

Funder

Fundamental Research Funds of ICBR

National Natural Science Foundation of China

National Key Research and Development Program of China

Publisher

MDPI AG

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