Genome-wide identification of genes involved in heterotrimeric G-protein signaling in Tartary buckwheat (Fagopyrum tataricum) and their potential roles in regulating fruit development

• Published in: International journal of biological macromolecules Vol. 171; pp. 435 - 447
• Main Authors: Liu, Changying, Ye, Xueling, Zou, Liang, Xiang, Dabing, Wu, Qi, Wan, Yan, Wu, Xiaoyong, Zhao, Gang
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 28.02.2021
• Subjects: Amino Acid Sequence; Ananas - genetics; Chromosome Mapping; Chromosomes, Plant - genetics; Conserved Sequence; Fagopyrum - genetics; Fagopyrum - growth & development; Fagopyrum - metabolism; Fragaria - genetics; Fruit; Fruit - genetics; Fruit - growth & development; G-protein signaling; Gene expression; Gene Expression Profiling; Gene Expression Regulation, Developmental; Gene Expression Regulation, Plant; Genes, Plant; Genome-Wide Association Study; Heterotrimeric GTP-Binding Proteins - genetics; Heterotrimeric GTP-Binding Proteins - physiology; Lycopersicon esculentum - genetics; Multigene Family; Organ Specificity; Phylogeny; Plant Proteins - genetics; Plant Proteins - physiology; Sequence Alignment; Sequence Homology, Amino Acid; Signal Transduction - genetics; Tartary buckwheat; Transcription Factors - genetics; Transcription Factors - physiology; Zea mays - genetics; Tartary buckwheat; Fruit; Gene expression; G-protein signaling
• ISSN: 0141-8130; 1879-0003
• DOI: 10.1016/j.ijbiomac.2021.01.016

Tartary buckwheat (Fagopyrum tataricum Gaertn.) is an economical crop with excellent edible, nutritional, and medicinal values. However, the production of Tartary buckwheat is very low and it is urgent to breed high-yield varieties for satisfying the increasing market demand. Heterotrimeric G-protein signaling involves in the regulation of agronomical traits and fruit development in several plant species. In this study, fifteen genes involved in G-protein signaling were characterized in Tartary buckwheat and their potential roles in fruit development were revealed by expression analysis. The exon-intron organization and conserved motif of Tartary buckwheat G-protein signaling genes were similar to those in other dicot plants. All these genes were ubiquitously and differently expressed in five tissues. The expression patterns of Tartary buckwheat G-protein signaling genes in fruit suggested they may play important roles in the fruit at early development stage, which was supported by meta-analysis of G-protein signaling genes' expression in the fruits from different species. Furthermore, we found the expression of G-protein signaling genes in fruit showed high correlation with 178 transcription factors, which indicated a transcriptional regulatory loop moderating G-protein signaling genes' expression during fruit development. This paper provides new insights into the physiological functions of G-protein signaling in fruit. •Fifteen G-protein signaling genes were firstly characterized in Tartary buckwheat.•G-protein signaling genes play important roles in the early development of fruit.•A transcriptional regulatory loop moderating G-protein signaling genes’ expression during fruit development was proposed.