Effect of benzothiadiazole, an inducer of systemic acquired resistance, on the pathogenesis of wheat brown rust

Plotnikova, L. Ya.

doi:10.1134/s1021443709040116

Cited by 9 publications

(4 citation statements)

References 16 publications

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“…In wheat, a number of reports have addressed SAR (Moya‐Elizondo and Jacobsen, ; Plotnikova, ; Yang et al ., ). For example, foliar applications of Bacillus mycoides reduced the severity of Fusarium crown rot, which was assumed to be caused by B. mycoides ‐induced SAR (Moya‐Elizondo and Jacobsen, ).…”

Section: Discussionmentioning

confidence: 99%

Isochorismate‐based salicylic acid biosynthesis confers basal resistance to Fusarium graminearum in barley

Hao

Wang

Han

et al. 2018

Molecular Plant Pathology

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Salicylic acid (SA) plays an important role in signal transduction and disease resistance. In Arabidopsis, SA can be made by either of two biosynthetic branches, one involving isochorismate synthase (ICS) and the other involving phenylalanine ammonia-lyase (PAL). However, the biosynthetic pathway and the importance of SA remain largely unknown in Triticeae. Here, we cloned one ICS and seven PAL genes from barley, and studied their functions by their overexpression and suppression in that plant. Suppression of the ICS gene significantly delayed plant growth, whereas PAL genes, both overexpressed and suppressed, had no significant effect on plant growth. Similarly, suppression of ICS compromised plant resistance to Fusarium graminearum, whereas similar suppression of PAL genes had no significant effect. We then focused on transgenic plants with ICS. In a leaf-based test with F. graminearum, transgenic plants with an up-regulated ICS were comparable with wild-type control plants. By contrast, transgenic plants with a suppressed ICS lost the ability to accumulate SA during pathogen infection and were also more susceptible to Fusarium than the wild-type controls. This suggests that ICS plays a unique role in SA biosynthesis in barley, which, in turn, confers a basal resistance to F. graminearum by modulating the accumulation of H O , O2- and reactive oxygen-associated enzymatic activities. Although SA mediates systemic acquired resistance (SAR) in dicots, there was no comparable SAR response to F. graminearum in barley. This study expands our knowledge about SA biosynthesis in barley and proves that SA confers basal resistance to fungal pathogens.

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Section: Discussionmentioning

confidence: 99%

Isochorismate‐based salicylic acid biosynthesis confers basal resistance to Fusarium graminearum in barley

Hao

Wang

Han

et al. 2018

Molecular Plant Pathology

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“…Classical form of SAR can be caused by virulent, avirulent, and non-pathogenic microorganisms or artificially with the help of chemicals, which are products of intermediate product of the immune response available for plants. These can be salicylic acid (SA), methyl salicylate, 2,6-dichloroisonicotinic acid (INA), jasmonic acid (JA), JA methyl, benzothiazole derivatives, DL-B-aminobutyric and oxalic acids [7]. Exogenous SA is included into the signal path and metabolism of the endogenous SA in plants and induces systems of resistance against biotrophic pathogens, including hypersensitivity and local resistance reaction.…”

Section: Literature Reviewmentioning

confidence: 99%

Investigation of the influence of salicylic acid on the causes of bacterial diagnostics of tomatoes

Kolomiets

2017

ScienceRise: Biological Science

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“…Classic forms of systemic acquired resistance (SAR) can be caused by virulent, avirulent and non-pathogenic microorganisms or artificially with the help of chemicals, which are products of intermediate product of the immune response available for plants. These can be salicylic acid (SA), methyl salicylate, 2,6-dichloroisonicotinic acid (INA), jasmonic acid (JA), JA methyl, benzothiazole derivative, DL-B-aminobutric and oxalic acid (Plotnikora, 2009). The main objective of the present work was to control bacterial soft rot disease of lettuce using biotic and abiotic agents alone and/or combined under field conditions.…”

Section: Introductionmentioning

confidence: 99%

Management of Lettuce Bacterial Soft Rot Disease Using Biotic and Abiotic Agents under Field Conditions

Abbas

El-Meneisy

Ebrahim

et al. 2019

Arab Universities Journal of Agricultural Sciences

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The current investigation was planned to apply some biotic and abiotic treatments singlely and/or combined to control bacterial soft rot diseases of lettuce under field conditions. The application of resistance inducers (jasmonic acid and salicylic acid), antibiotics (norfloxacin and tetracycline) and bio-agents (isolates of B. subtilis and Ps. fluorescens) significantly reduced the disease severity as a single treatment compared to the control treatment. Obtained results indicated that resistance inducers appeared to be most effective against bacterial soft rot disease of lettuce compared with other treatments, while antibiotics were less effective at controlling the disease. However, the interaction between bio-agents as soil drench treatment, antibiotics, or resistance inducers as foliar treatment significantly reduced the severity of lettuce bacterial soft rot disease compared with the control treatment. Furthermore, interaction between disease severity was more reducted with interaction treatments between Ps. fluorescens isolate rather than interact with treatments between B. subtilis isolate and other treatments. However, interaction between isolate of Ps. fluorescens as bio-agent or norfloxacin or salicylic acid, were the most effective methods to control the disease compared with other treatments. Meanwhile, interaction between resistance inducers and antibiotics as foliar treatments were significantly reduced from severity of lettuce bacterial soft rot disease compared with the control. Disease severity was more reduced with application of interaction between norfloxacin and resistance inducers than interaction between tetracycline and resistance inducers. Meanwhile, the severity of the disease decreased more with the application of interaction between salicylic acid and antibiotics than the interaction between jasmonic acid and antibiotics. Generally, all combination treatments were more efficient than single treatments to manage the disease.

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Effect of benzothiadiazole, an inducer of systemic acquired resistance, on the pathogenesis of wheat brown rust

Cited by 9 publications

References 16 publications

Isochorismate‐based salicylic acid biosynthesis confers basal resistance to Fusarium graminearum in barley

Isochorismate‐based salicylic acid biosynthesis confers basal resistance to Fusarium graminearum in barley

Investigation of the influence of salicylic acid on the causes of bacterial diagnostics of tomatoes

Management of Lettuce Bacterial Soft Rot Disease Using Biotic and Abiotic Agents under Field Conditions

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