Plants coexist with diverse fungal communities inhabiting both the rhizosphere and endosphere, forming dynamic interactions, which shape plant health and resilience. Recent studies reveal that these two fungal compartments are not functionally isolated but interconnected through complex signaling, metabolite exchange, and cooperative defense responses. Emerging evidence reveals that rhizospheric and endophytic fungi engage in dynamic crosstalk mediated by chemical signals and root exudates in the rhizosphere together with molecular exchanges which are involved in priming plant defense responses and secondary metabolism adjustments. This review synthesizes current knowledge on the mechanisms underlying the effects of rhizosphere dynamics on rhizospheric–endophytic fungal crosstalk and their collective roles in mediating plant tolerance or resistance to biotic and abiotic stresses. Ecological and molecular processes driving fungal recruitment, colonization, and communication, emphasizing their influence on plant immunity priming, hormonal modulation, and antioxidative systems are discussed. Advances in omics technologies have deepened understanding of the rhizosphere–endosphere continuum, revealing integrated networks which shape plant health under environmental constraints. The present review identifiees research gaps and proposes future directions for harnessing beneficial fungal networks in association with rhizosphere as sustainable tools for crop protection under changing climate conditions.

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