[1] Univ Bath, Dept Biol & Biochem, Bath BA2 7AY, Avon, England
[2] Univ Copenhagen, Dept Plant Biol & Biotechnol, Fac Life Sci, DK-1871 Frederiksberg, Denmark
[3] Univ Basel, Inst Bot, Zurich Basel Plant Sci Ctr, CH-4056 Basel, Switzerland
[4] Univ Naples Federico 2, Complesso Univ Monte SantAngelo, Dipartimento Chim Organ & Biochim, I-80126 Naples, Italy