variety of organic substrates. Acclimation responses to different nutrient regimes finely
control photosynthetic activity and can influence H 2 production. Hence, nutrient stresses are
an interesting scenario to study H 2 production in photosynthetic organisms. In this review,
we mainly focus on the H 2-production mechanisms in Chlamydomonas reinhardtii and the
physiological relevance of the nutrient media composition when producing H 2.