After comparing the metabolic responses between oat plants under an average light intensity to that of oat plants under extreme light intensity, Quiles noted that the amount of PS II produced was of a lower amount in the leaves that underwent chlororespiration in extreme light. Whereas higher levels of PS II were yielded by those leaves that underwent average light intensity. A higher of PS II is more efficient for chemical energy synthesis and thus for a plant's survival. Quiles indicates that although the chlororespiratory pathway is less efficient, it still serves as a back-up response for energy production in plants. Ultimately, Quiles concluded that the intense light on oat plants had caused PS II levels to reduce and thus, initiate an influx of gate-way (NAD(P)H) proteins to start the process of chlororespiration.