  Chemically induced dynamic nuclear polarization is a signature of spin order
appearing in many photosynthetic reaction centers. Such polarization,
significantly enhanced above thermal equilibrium, is known to result from the
nuclear spin sorting inherent in the radical pair mechanism underlying
long-lived charge-separated states in photosynthetic reaction centers. We will
here show that the recently understood fundamental quantum dynamics of
radical-ion-pair reactions open up a new and completely unexpected venue
towards obtaining CIDNP signals. The fundamental decoherence mechanism inherent
in the recombination process of radical pairs is shown to produce nuclear spin
polarizations on the order of $10^4$ times or more higher than the thermal
equilibrium value at earth's magnetic field relevant to natural photosynthesis.
This opens up the possibility of a fundamentally new exploration of the
biological significance of high nuclear polarizations in photosynthesis.
