[1] Univ Bonn, D-53115 Bonn, Germany
[2] Univ Amsterdam, Swammerdam Inst Life Sci, Dept Plant Physiol, NL-1098 SM Amsterdam, Netherlands
[3] Vrije Univ Amsterdam, Dept Ecol & Physiol Plants, NL-1081 HV Amsterdam, Netherlands
[4] Univ Gottingen, Dept Plant Biochem, Albrecht von Haller Inst Plant Sci, D-37077 Gottingen, Germany
[5] Univ Utrecht, NL-3584 CH Utrecht, Netherlands