Research Progress in Plant Molecular Systematics of Lauraceae

Simple Summary Lauraceae, as an angiosperm group with high ecological and economic value, has been widely studied. With the development of science and technology, the research of Lauraceae has changed from morphology to molecular systematics. Our paper reviewed the molecular phylogeny of Lauraceae in recent years. From the aspects of gene fragments, chloroplast genome and DNA barcodes, we mainly discussed the establishment of Cinnamomeae in the 'Core Lauraceae' and the tribal controversial genera (Actinodaphne, Sassafras, Caryodaphnopsis, Neocinnamomum and Cassytha). We think that the whole genome and inflorescence characteristics are the breakthrough to solve the tribal problem of Lauraceae. Using reliable molecular and morphological evidence to reconstruct the phylogenetic relationship of Lauraceae will provide an important theoretical basis for the rational utilization of Lauraceae resources, the development of potential resources and the protection of rare plants. Lauraceae is a large family of woody plants with high ecological and economic value. The tribal and generic division and phylogenetic relationship of Lauraceae have long been controversial. Based on morphological and molecular evidence, phylogenetic relationships within the Cinnamomeae, Laureae and Perseeae tribes, also called 'the Core Lauraceae', have arisen particular attention. In this review, we comprehensively collated the literatures on the phylogeny of Lauraceae published in recent years and summarized progress made in molecular systematic researches employing gene fragments, chloroplast genomes and DNA barcodings analyses. We clarified the phylogenetic relationships and main controversies of 'the Core Lauraceae', the systemic position of fuzzy genera (Neocinnamomum, Caryodaphnopsis and Cassytha) and the development of chloroplast genome and DNA barcodes. We further suggested and proposed the whole genome analysis and different inflorescence types would be possible to provide more information for further research on phylogenetic relationships and taxonomy of Lauraceae.

Automated summary

Lauraceae, a large family of woody plants with high ecological and economic value, has long been controversial in terms of tribal and generic division and phylogenetic relationships. Recent studies on the molecular phylogeny of Lauraceae have shifted focus from morphology to molecular systematics, particularly within the Cinnamomeae, Laureae, and Perseeae tribes known as 'the Core Lauraceae'. By utilizing gene fragments, chloroplast genomes, and DNA barcoding analyses, progress has been made in clarifying the phylogenetic relationships and controversies within the Core Lauraceae, as well as the development of chloroplast genomes and DNA barcodes. Further research utilizing whole genome analysis and different inflorescence types is suggested to enhance understanding of the phylogenetic relationships and taxonomy of Lauraceae.