[biological_process] cellular response to abscisic acid stimulus <sep> cellular response to water deprivation <sep> photosynthesis, light harvesting in photosystem I <sep> photosynthesis, light harvesting in photosystem II <sep> positive regulation of reactive oxygen species biosynthetic process <sep> regulation of stomatal closure <sep> response to cold <sep> response to desiccation <sep> response to far red light <sep> response to high light intensity <sep> response to light stimulus <sep> response to low light intensity stimulus <sep> response to red light