Genome-wide expression analysis of genes in tomato ( L.) under different light conditions.

Lateral organ boundaries (LOB) domain () genes, a gene family that encodes the transcription factors (TFs) of plants, plays crucial functions in the development and growth of plants. Currently, genome-wide studies of the family are still limited to tomato ( L.), which is considered an important economic crop. In this study, we performed a genome-wide analysis of in tomato. In total, 56 were found in the tomato genome. Protein alignment and phylogenetic classification showed that were conserved with other species. Since light emitting diodes (LEDs) light have promising applications for tomato growth. To better understand the potential function of in response to LED light in tomato, we conducted a genome-wide expression analysis of genes under different light conditions. As expected, different LED lights affected the tomato growth (e.g. hypocotyl length). RNA-seq data showed that eight in tomato seedlings were differentially expressed under different light treatments, including white, blue, red, and far-red light, compared to the dark-grown condition. It indicates that these might regulate plant development in different LED light conditions. Interestingly, two genes ( and ) were found to be differentially expressed in four distinct lights, which might be involved in regulating the plant architecture via a complicated TF network, which can be taken into consideration in further investigation.