Priming of seeds with INA and its transgenerational effect in common bean (Phaseolus vulgaris L.) plants
| Autor: | José Luis Hernández-Chávez, Keren Martínez-Aguilar, Raul Alvarez-Venegas |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Crops
Agricultural 0106 biological sciences 0301 basic medicine Pseudomonas syringae Germination Plant Science Plant disease resistance 01 natural sciences 03 medical and health sciences chemistry.chemical_compound Genetics Plant defense against herbivory Disease Resistance Plant Diseases Phaseolus biology food and beverages General Medicine biology.organism_classification Cell biology 030104 developmental biology chemistry Seed treatment Seeds Isonicotinic Acids Agronomy and Crop Science Priming (psychology) Systemic acquired resistance 010606 plant biology & botany |
| Zdroj: | Plant Science. 305:110834 |
| ISSN: | 0168-9452 |
| Popis: | Priming is a mechanism of defense that prepares the plant’s immune system for a faster and/or stronger activation of cellular defenses against future exposure to different types of stress. This enhanced resistance can be achieved by using inorganic and organic compounds which imitate the biological induction of systemic acquired resistance. INA (2,6 dichloro-isonicotinic acid) was the first synthetic compound created as a resistance inducer for plant-pathogen interactions. However, the use of INA to activate primed resistance in common bean, at the seed stage and during germination, remains experimentally unexplored. Here, we test the hypothesis that INA-seed treatment would induce resistance in common bean plants to Pseudomonas syringae pv. phaseolicola, and that the increased resistance is not accompanied by a tradeoff between plant defense and growth. Additionally, it was hypothesized that treating seeds with INA has a transgenerational priming effect. We provide evidence that seed treatment activates a primed state for disease resistance, in which low nucleosome enrichment and reduced histone activation marks during the priming phase, are associated with a defense-resistant phenotype, characterized by symptom appearance, pathogen accumulation, yield, and changes in gene expression. In addition, the priming status for induced resistance can be inherited to its offspring. |
| Databáze: | OpenAIRE |
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