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Updated: Jun 26, 2026

An Efficient Method for Quantitative, Single-cell Analysis of Chromatin Modification and Nuclear Architecture in Whole-mount Ovules in Arabidopsis
Published on: June 19, 2014
Orchid genome evolution and trait innovation
Meng-Yao Zeng1, Cheng-Yuan Zhou1,2, Linying Wang1
1Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
Abstract:
Orchidaceae, one of the largest and most morphologically diverse angiosperm families, showcases unique evolutionary adaptations in morphology, ecology, and function. Recent advances in molecular and genomic research have greatly reshaped our understanding of orchid evolution, revealing how genome dynamics, ecological interactions, and developmental plasticity jointly shaped their exceptional diversification. Phylogenomic frameworks derived from various genomic datasets have reconstructed the evolutionary history, revealing the influence of geological, climatic, and biotic factors on ancient divergences and global distributions. Comprehensive genomic studies have uncovered substantial variation in genome size, structure, and composition, largely driven by repetitive elements and whole-genome duplication events that facilitated adaptive radiations. Key innovations, including epiphytism, mycoheterotrophy, and deceptive pollination, are linked to gene family evolution and modifications in pathways related to CAM photosynthesis, mycorrhizal symbiosis, and floral morphogenesis. Integrative multi-omics approaches further illuminate mechanisms underlying speciation hotspots, coevolution with pollinators and fungi, and the molecular basis of developmental diversity. Overall, this review synthesizes current genomic, phylogenetic, and functional insights into orchid evolution, providing a theoretical foundation and future research framework for understanding their molecular diversification.
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