Published Paper Details:

Within biophysical framework, plant growth and yield formation are traditionally explained through biochemical regulation, gene expression, and metabolic allocation. However, these processes operate within an unavoidable physical boundary condition: accumulated biological mass must be stabilized under persistent gravitational loading within confined architectures such as cell walls, seed coats, vascular bundles, and canopy-soil interfaces. This manuscript reformulates intrinsic gravitation as a structural constraint rather than a force competing with metabolism. Intrinsic gravitation refers to mass-dependent internal loading that arises as biomass accumulates within bounded plant structures. Extrinsic gravitation denotes the persistent Earth gravitational field that establishes vertical reference and hydrostatic baseline. Conceptual continuity is drawn from stellar hydrostatic equilibrium and geophysical isostatic balance as archetypes of mass-pressure stabilization. A compact balance framework unifies hydrostatic, osmotic, elastic, and active stresses in negotiating gravitational loading. The framework is applied across plant phenomena: cellular densification preceding expansion; seed germination as confinement-threshold release; vascular transport as a pressure-mass continuum; root-shoot allocation as compensatory stabilization; stand density and self-thinning as mass-stability scaling; pressure-state modulation of plasmodesmata and sieve tubes; rhythmic growth as mass-pressure oscillation; yield-component compensation; and age-dependent decline in relative growth rate. By repositioning gravity as a structural boundary condition rather than an energetic driver, this work proposes architectural continuity across astrophysical accretion, geophysical stabilization, and plant structural scaling.