Biomolecular condensates have emerged as versatile regulators of plant cellular processes, offering a dynamic and reversible mechanism to coordinate development, stress response, and spatial organization. Through phase separation, these condensates spatially and temporally modulate biochemical reactions, sequester or activate specific proteins and RNAs, and reshape cellular architecture. This review presents a comprehensive and multidimensional framework for understanding biomolecular condensates in plant biology, from their biophysical properties and ensemble dynamics to their roles across diverse cellular compartments, including plasma membranes, cytoskeleton, intracellular compartments, and chromatin. We highlight their functions in growth, environmental sensing, and defense and discuss current challenges in studying their composition, material properties, and context-dependent behaviors. Understanding plant condensates not only deepens our knowledge of plant cell organization and adaptability but also opens new avenues for biotechnological innovation in agriculture.
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