| http://www.w3.org/ns/prov#value | - n a plant.In a further aspect the invention provides an isolated polynucleotide encoding a polypeptide with the sequence of SEQ ID NO: 1 or a variant thereof, wherein the variant is a polypeptide capable of modulating in a plant tolerance to at least one environmental stress selected from drought, cold, freezing, heat and salinity.Preferably the polypeptide is capable of modulating at least two, p
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