Abstract
An alternative to the use of chemical fungicides is to enhance the defensive response of plants by appropriate stimulation, a phenomenon known as induction of resistance. The aim of this study was to determine the changes of endogen levels of salicylic acid (SA) and jasmonic acid (JA) in potato plants as response to foliar application of biotic and abiotic inductors. Treatments T1 = Best Ultra F (Bacillus spp. 108 cfu/mL and Pseudomonas fluorescens 108 cfu/mL) 0.5%, T2 = FullKover HF (microbial jasmonic acid 1500 ppm) 0.2%, T3 = T1 0.5% + T2 0.1%, T4 = Milor® (Chlorothalonil + Metalaxyl) 0.5% and T5 = control (water) were applied in potato plants. The application of biotic and abiotic inductors improved the SA and JA production in potato plants. The production of salicylic acid in potato plants was observed by application of Bacillus spp. and Pseudomonas fluorescens (T1) and fungicide Milor® (T4). The application of T1 Best Ultra F, T2 FullKover HF (microbial JA), T3 (T1 + T2) and T4 Milor® improved the JA production in potato plants.
Highlights
How to cite this paper: González-Gallegos, E., et al (2015) Changes in the Production of Salicylic and Jasmonic Acid in Potato Plants (Solanum tuberosum) as Response to Foliar Application of Biotic and Abiotic Inductors
Salicylic acid is a plant hormone that acts as a marker and regulator of plant responses against pathogens and abiotic stress is the molecule involved in acquired systemic resistance (ASR) pathways [5]
It has been reported that induced systemic resistance (ISR) is effective against viral, bacterial and fungal diseases, is dependent of jasmonic acid (JA) signaling and occurs when the plant roots are colonized by some nonpathogenic rhizobacteria or herbivores insect damage [13]
Summary
How to cite this paper: González-Gallegos, E., et al (2015) Changes in the Production of Salicylic and Jasmonic Acid in Potato Plants (Solanum tuberosum) as Response to Foliar Application of Biotic and Abiotic Inductors. ASR is activated after infection by a pathogen and is characterized by a hypersensitive reaction, local and systemic increase of endogenous SA levels in the plant, and by the production of pathogenesis-related proteins (PR) [6]. The resistance against pathogenic infection can be improved by biotic and abiotic treatments, called inductors. The abiotic inductors include chemical products or molecules as responsible of disease resistance signaling [16]. The aim of this study was to determinate the changes of endogen levels of SA and JA in potato plants as a response to foliar application of biotic and abiotic inductors
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