What is NPQ?

Nonradiative Energy Dissipation in PSII

Purpose: Protects PSII from photochemical damage in “High Light”

High Light (10-20 min.) = Decrease in ?F (~50%)

NPQ (ps)

Chl

So

S1

T1

Excess h?

Fluorescence (ns)

ISC (ns)

?

S1

S0

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