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Proteome impact on maize silks under the priming state induced by Trichoderma root colonization
Romina B Agostini1, Sebastián P Rius1, Walter A Vargas1,2
1Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Rosario, Santa Fe, Argentina.
Planta
|May 2, 2021
Summary
Trichoderma activates plant proteins, particularly in the phenylpropanoid pathway, to defend against Fusarium. This study highlights post-transcriptional regulation in plant immunity, revealing how Trichoderma primes maize defenses.
Area of Science:
- Plant-microbe interactions
- Molecular plant pathology
- Proteomics and transcriptomics
Background:
- Trichoderma species are known to induce plant defense mechanisms.
- Previous research investigated transcriptional changes in maize silk following Trichoderma and Fusarium inoculation.
- Understanding the proteomic response is crucial for a comprehensive view of plant immunity.
Purpose of the Study:
- To investigate the proteomic changes in maize silk induced by Trichoderma atroviride.
- To compare proteomic data with previous transcriptomic data to understand differential gene regulation.
- To identify key proteins and pathways involved in Trichoderma-mediated plant defense priming.
Main Methods:
- Proteomic analysis of maize silk tissues inoculated with Trichoderma atroviride.
- Comparison of proteomic data with existing transcriptomic data.
- Focus on proteins involved in the phenylpropanoid pathway.
Main Results:
- Several proteins involved in plant defense priming were identified.
- A low correlation was observed between proteomic and transcriptomic data, suggesting post-transcriptional regulation.
- Upregulation of proteins in the phenylpropanoid pathway was detected, indicating enhanced cell wall reinforcement, flavonoid, and lignin synthesis.
Conclusions:
- Trichoderma activates specific plant proteins to confer resistance against Fusarium infection.
- Differential regulation occurs post-transcriptionally, impacting the final defense response.
- The phenylpropanoid pathway plays a key role in Trichoderma-induced systemic resistance and pathogen defense in maize.
