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Comparison of intracellular location and stimulus reaction times of forisomes in sieve tubes of four legume species

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Paulmann,  Maria K.
Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society;
IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society;

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Kunert,  Grit
Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society;

Externe Ressourcen

http://dx.doi.org/10.1080/15592324.2018.1503493
(Verlagsversion)

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Zitation

Furch, A. C. U., Paulmann, M. K., Wegner, L., Kunert, G., & Van Bel, A. J. (2018). Comparison of intracellular location and stimulus reaction times of forisomes in sieve tubes of four legume species. Plant Signaling & Behavior, 13(8): e1503493. doi:10.1080/15592324.2018.1503493.


Zitierlink: https://hdl.handle.net/21.11116/0000-0001-FDE8-D
Zusammenfassung
Forisomes in legumes are responsible for fast sieve-element occlusion in response to injury to the vascular system. This prevents uncontrolled leakage of phloem sap and protects against invasion of pathogens. Here we compared forisomes of four different legumes (Pisum sativum, Vicia faba, Trifolium pratense and Medicago sativa) by their location (basal, central, apical) in the sieve element and reactivity to a distant heat stimulus. In each species, the majority of forisomes was located basally. Yet, we found differences in intracellular location: forisomes are distributed more evenly in the sieve elements of Pisum. After burning, basally located forisomes of the four species reacted with dispersion, followed by a spontaneous recondensation with similar reaction times. The results suggest universal forisome behaviour in fabacean species.