Plant- and stimulus-specific variations in remote-controlled sieve-tube occlusion.
Phloem injury triggers local sieve-plate occlusion including callose-mediated constriction and protein plugging of sieve pores. In intact plants, reversible sieve-plate occlusion is induced by electric potential waves (EPWs)-accompanied by Ca(2+)-influx-as result of distant burning. Here, we present additional results which pertain to (a) the variability of EPW-profiles in relation to forisome conformation in intact Vicia faba plants and (b) the differential occlusion reactions to burning and cutting in various plant species. A correlation between stimulus perception and mode of phloem loading is discussed.
Furch
Alexandra Cu
AC
Plant Cell Biology Research Group; Institute of General Botany; Justus-Liebig-University; Giessen Germany.
Hafke
Jens B
JB
van Bel
Aart Je
AJ
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