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Related Experiment Video

Updated: Jun 12, 2026

Imaging Ca2+ Responses During Shigella Infection of Epithelial Cells

Imaging Ca²⁺ Responses During Shigella Infection of Epithelial Cells

Published on: May 24, 2018

Cuscuta reflexa invasion induces Ca release in its host.

M Albert¹, S van der Krol, R Kaldenhoff

¹Zentrum für Molekularbiologie der Pflanzen, University Tübingen, Tübingen, Germany.

Plant Biology (Stuttgart, Germany)

|June 5, 2010

Summary

This summary is machine-generated.

Calcium spiking in tomato plants infected by the parasitic plant Cuscuta reflexa was observed. This calcium release, a key part of signal transduction, was linked to parasite haustoria.

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Real-time In Vivo Recording of Arabidopsis Calcium Signals During Insect Feeding Using a Fluorescent Biosensor

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Area of Science:

Plant biology
Molecular signaling
Parasitic plant interactions

Background:

Cuscuta reflexa, a parasitic plant, triggers diverse host reactions, including visual and molecular changes.
Signal transduction pathways, involving calcium (Ca2+) as a second messenger, are early molecular events in host responses.

Purpose of the Study:

To investigate calcium (Ca2+) spiking dynamics in tomato plants during Cuscuta reflexa infestation.
To identify the molecular triggers from Cuscuta reflexa responsible for initiating host calcium signaling.

Main Methods:

Utilized aequorin-expressing tomato plants to monitor bioluminescence, indicating Ca2+ release.
Observed Ca2+ signaling for 48 hours post-infestation.
Tested Cuscuta plant extracts on tomato leaf disks to pinpoint the signaling substance.

Main Results:

Observed Ca2+ spiking signals in tomato plants starting between 30 and 48 hours after Cuscuta infestation.
Signals were localized at the attachment sites of the parasite.
Cuscuta plant extracts induced Ca2+ release, suggesting the involvement of parasite haustoria.

Conclusions:

Calcium signaling is an early molecular response in tomato plants to Cuscuta reflexa infection.
The parasitic haustoria of Cuscuta reflexa likely contain substances that trigger host Ca2+ release and signal transduction.