Material Memory of Microbial Conduits — Hypothesis Note v1.2

A peer‑reviewed discovery of long, helical subcellular conduits in an insect symbiont bacterium (cryo‑EM / cryo‑ET; ribosome‑rich; 5–6 protofilaments; tens of µm) provides a solid empirical anchor: microbes build functional geometry. We propose a lab‑scale hypothesis that such geometry persists as a material‑memory field, S(x,t), which modulates present transport and reactions via anisotropic D(S) and k(S). We integrate this with our PMM/Phyto toolkit: (i) sporopollenin‑based tubular scaffolds (PMM‑Dust) as helix analogs, (ii) EPS‑templated synthesis in the Bio‑Forge, and (iii) enzyme/ribosome cargos on pollen carriers for directed micro‑compartmentation. We specify falsifiable lab predictions (diffusion anisotropy, resonance windows, ROS filtering) and a compact V0 program (8–10 weeks) confined to EPS‑helix gels and PMM scaffolds with open MRV. Field‑scale links (meso‑columns, soils) are explicitly deferred. The aim is to turn a confirmed subcellular phenomenon into testable physics/chemistry that directly leverages existing PMM/Phyto methods.