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Related Experiment Video

Updated: Jun 3, 2026

Direct Observation and Automated Measurement of Stomatal Responses to Pseudomonas syringae pv. tomato DC3000 in Arabidopsis thaliana

Direct Observation and Automated Measurement of Stomatal Responses to Pseudomonas syringae pv. tomato DC3000 in Arabidopsis thaliana

Published on: February 9, 2024

New perspective of jasmonate function in leaf senescence.

Xiaoyi Shan¹, Chenggang Li, Wen Peng

¹Hunan Agricultural University, Changsha, China.

Plant Signaling & Behavior

|March 30, 2011

Summary

Plant hormone Jasmonates (JAs) trigger leaf aging. Researchers found Jasmonates repress Rubisco activase (RCA) via COI1, linking this to leaf senescence and suggesting RCA

Area of Science:

Plant Molecular Biology
Plant Physiology
Biochemistry

Background:

Jasmonates (JAs) are plant hormones known to induce leaf senescence.
The F-box protein coronatine insensitive 1 (COI1) is crucial for various JA-regulated processes, including leaf senescence.
The precise molecular mechanisms underlying COI1-dependent JA-induced leaf senescence are not fully understood.

Purpose of the Study:

To elucidate the molecular basis of COI1-dependent Jasmonate-induced leaf senescence.
To identify key proteins regulated by COI1 in response to Jasmonates.
To investigate the role of identified proteins in the process of leaf senescence.

Main Methods:

Identification of COI1-dependent JA-repressed proteins in Arabidopsis using genetic and physiological analyses.

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Detection of Histone Modifications in Plant Leaves

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Published on: September 23, 2011

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Last Updated: Jun 3, 2026

Direct Observation and Automated Measurement of Stomatal Responses to Pseudomonas syringae pv. tomato DC3000 in Arabidopsis thaliana

Direct Observation and Automated Measurement of Stomatal Responses to Pseudomonas syringae pv. tomato DC3000 in Arabidopsis thaliana

Published on: February 9, 2024

Detection of Histone Modifications in Plant Leaves

Detection of Histone Modifications in Plant Leaves

Published on: September 23, 2011

Correlation analysis between the repression of identified proteins and JA-induced leaf senescence.

Phenotypic analysis of plants with altered expression or function of the identified proteins.

Main Results:

A COI1-dependent, JA-repressed protein, Rubisco activase (RCA), was identified in Arabidopsis.
The repression of RCA by JAs, mediated by COI1, was found to correlate with the induction of leaf senescence.
Loss of RCA function resulted in the manifestation of typical senescence-associated features in plants.

Conclusions:

The COI1-dependent repression of Rubisco activase (RCA) plays a significant role in Jasmonate-induced leaf senescence.
RCA is a key component in the molecular pathway linking Jasmonates to the regulation of leaf aging.
Further investigation into RCA's function in senescence and JA-mediated defense responses is warranted, along with its potential role in natural plant senescence.