scholarly journals Participation of ferulic acid in elicitation of winter wheat plants resistance against Septoria tritici infection

1970 ◽  
pp. 190-193 ◽  
Author(s):  
I. V. Zhuk ◽  
O. P. Dmytriev ◽  
G. M. Lisova ◽  
L. O. Kucherova
Keyword(s):  
Winter Wheat ◽  
Ferulic Acid ◽  
Plant Disease Resistance ◽  
Induced Defense ◽  
Lignin Biosynthesis ◽  
Triticum Aestivum L ◽  
Defense Responses ◽  
Septoria Tritici Blotch ◽  
Septoria Tritici ◽  
Induced Defense Responses

Aim. The usage of biotic elicitors for elicitation of defense responses may induce plant disease resistance and prevent increased environmental pollution by pesticides. The aim of research was to analyze in field trials participation of ferulic acid in elicitation of winter wheat resistance against Septoria tritici blotch agent. Methods. Content of endogenous H2O2, peroxidase, catalase and ascorbatperoxidase activities were measured in elicitor-treated and inoculated by S. tritici blotch winter wheat plants (cv. Poliska 90) during different ontogenesis phases. The extent of disease development, morphometric parameters and yield structure were analyzed. Results. The data obtained suggest that ferulic acid induced defense responses in winter wheat against S. tritici blotch agent. Initiation of defense responses in elicitor-treated plants occurred shortly. Hydrogen peroxide content was enhanced in elicitor-treated plants. Conclusions. Ferulic acid could be used as biotic elicitor. It increased the wheat grain quantity. Elicitation of biochemical nature of induced defense responses revealed increased peroxidase activities for lignin biosynthesis and mechanical strengthening of the plant cell walls. Keywords: winter wheat, biotic elicitors, induced resistance, ferulic acid, Triticum aestivum L., Septoria tritici.

scholarly journals The estimation of organic acids effectiveness as biotic elicitors via changes of endogenous peroxid content

2020 ◽  
Vol 26 ◽  
pp. 202-206
Author(s):  
I. V. Zhuk ◽  
A. P. Dmitriev ◽  
Ju. V. Shylina ◽  
G.M. Lysova ◽  
L. O. Kucherova
Keyword(s):  
Hydrogen Peroxide ◽  
Winter Wheat ◽  
Plant Disease Resistance ◽  
Systemic Acquired Resistance ◽  
Induced Defense ◽  
Acquired Resistance ◽  
Triticum Aestivum L ◽  
Defense Responses ◽  
Septoria Tritici ◽  
Signal Molecule

Aim. The usage of biotic elicitors for elicitation of defense responses may induce plant disease resistance and prevent increased environmental pollution by pesticides. Hydrogen peroxide is a well-known signal molecule for photosynthetic status and for stomatal movements, and systemic acquired resistance to pathogens in plants proposed to be dependent on H2O2. The aim of research was to analyze in field trials the effect of oxalic, ferulic and kojic acid on H2O2 content and winter wheat resistance against Septoria tritici. Methods. Content of endogenous H2O2 was measured in elicitor treated and inoculated by S. tritici wheat plants (cv. Oberig) during different ontogenesis phases. The extent of disease development, morphometric parameters and yield structure were analyzed. Results. It is shown that the lowest level of hydrogen peroxide in leaves at the necrotrophic stage of pathogen infection was after oxalic acid treatment, and the highest – after koijc acid influence. Conclusions. The data obtained suggest that elicitors induced defense responses in winter wheat against S. tritici and hydrogen peroxide content is an important and valuable parameter. Keywords: biotic elicitors, hydrogen peroxide, induced resistance, Triticum aestivum L., Septoria tritici Rob et Desm.

scholarly journals The influence of kojic acid and donor NO on Triticum aestivum L. under biotic stress

2019 ◽  
Vol 25 ◽  
pp. 219-224
Author(s):  
I. V. Zhuk ◽  
O. P. Dmitriev ◽  
G. M. Lysova ◽  
L. O. Kucherova
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Biotic Stress ◽  
Plant Disease Resistance ◽  
Systemic Acquired Resistance ◽  
Kojic Acid ◽  
Triticum Aestivum L ◽  
Defense Responses ◽  
Septoria Tritici ◽  
Signal Molecule

Aim. The usage of biotic elicitors for elicitation of defense responses may induce plant disease resistance and prevent increased environmental pollution by pesticides. Hydrogen peroxide (HP) is a signal molecule for photosynthetic status and for stomatal movements, and systemic acquired resistance to pathogens in plants proposed to be dependent on H2O2. It is shown in our previous research that biotic elicitors influence on H2O2 content in plants. Kojic acid inhibits tyrosinase activity in melanin synthesis. In plant-pathogen interaction melanin plays role for filaments growth of fungal agent. The aim of research was to analyze in field trials effect of kojic acid with additional donor NO treatment of winter wheat under biotic stress. Methods. Content of endogenous H2O2 was measured in kojic acid and NO donor treated wheat plants (cv. Legenda Myronivska) during different ontogenesis phases. The extent of morphometric parameters and yield structure were analyzed. Results. The data obtained suggest that kojic acid and donor NO decreased the HP content in wheat leaves and increased the grain number and yield. Conclusions. Kojic acid with donor NO is effective combination and could be used as biotic elicitor. Keywords: winter wheat, kojic acid, NO, biotic elicitors, induced resistance, Triticum aestivum L., Septoria tritici Rob.et Desm.

scholarly journals Induction of cell wall phenolic monomers as part of direct defense response in maize to pink stem borer (Sesamia inferens Walker) and non-insect interactions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
P. Lakshmi Soujanya ◽  
J. C. Sekhar ◽  
C. V. Ratnavathi ◽  
Chikkappa G. Karjagi ◽  
E. Shobha ◽  
...  
Keyword(s):  
Induced Defense ◽  
Stem Borer ◽  
Defense Responses ◽  
Short Term ◽  
Mechanical Wounding ◽  
Leaf Tissues ◽  
Short And Long Term ◽  
Insect Interactions ◽  
Induced Defense Responses

AbstractPink stem borer (PSB) causes considerable yield losses to maize. Plant–insect interactions have significant implications for sustainable pest management. The present study demonstrated that PSB feeding, mechanical wounding, a combination of mechanical wounding and PSB regurgitation and exogenous application of methyl jasmonate have induced phenolic compound mediated defense responses both at short term (within 2 days of treatment) and long term (in 15 days of treatment) in leaf and stalk tissues of maize. The quantification of two major defense related phenolic compounds namely p-Coumaric acid (p-CA) and ferulic acid (FA) was carried out through ultra-fast liquid chromatography (UFLC) at 2 and 15 days after imposing the above treatments. The p-CA content induced in leaf tissues of maize genotypes were intrinsically higher when challenged by PSB attack at V3 and V6 stages in short- and long-term responses. Higher p-CA content was observed in stalk tissues upon wounding and regurgitation in short- and long-term responses at V3 and V6 stages. Significant accumulation of FA content was also observed in leaf tissues in response to PSB feeding at V3 stage in long-term response while at V6 stage it was observed both in short- and long-term responses. In stalk tissues, methyl jasmonate induced higher FA content in short-term response at V3 stage. However, at V6 stage PSB feeding induced FA accumulation in the short-term while, wounding and regurgitation treatment-induced defense responses in the long-term. In general, the resistant (DMRE 63, CM 500) and moderately resistant genotypes (WNZ ExoticPool) accumulated significantly higher contents of p-CA and FA content than susceptible ones (CM 202, BML 6) in most of the cases. The study indicates that phenolic mediated defense responses in maize are induced by PSB attack followed by wounding and regurgitation compared to the other induced treatments. Furthermore, the study confirmed that induced defense responses vary with plant genotype, stage of crop growth, plant tissue and short and long-term responses. The results of the study suggested that the Phenolic acids i.e. p-CA and FA may contribute to maize resistance mechanisms in the maize-PSB interaction system.

scholarly journals QTL Mapping of Seedling and Adult Plant Resistance to Septoria Tritici Blotch in Winter Wheat cv. Mandub (Triticum aestivum L.)

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1108
Author(s):  
Dominika Piaskowska ◽  
Urszula Piechota ◽  
Magdalena Radecka-Janusik ◽  
Paweł Czembor
Keyword(s):  
Mapping Population ◽  
Triticum Aestivum L ◽  
Seedling Stage ◽  
Septoria Tritici Blotch ◽  
Septoria Tritici ◽  
Adult Plant ◽  
Resistance Locus ◽  
Phenotypic Variance ◽  
Breeding Programs ◽  
Plant Stage

Septoria tritici blotch (STB) is one of the most devastating foliar diseases of wheat worldwide. Host resistance is the most economical and safest method of controlling the disease, and information on resistance loci is crucial for effective breeding for resistance programs. In this study we used a mapping population consisting of 126 doubled-haploid lines developed from a cross between the resistant cultivar Mandub and the susceptible cultivar Begra. Three monopycnidiospore isolates of Z. tritici with diverse pathogenicity were used to test the mapping population and parents’ STB resistance at the seedling stage (under a controlled environment) and adult plant stage (polytunnel). For both types of environments, the percentage leaf area covered by necrosis (NEC) and pycnidia (PYC) was determined. A linkage map comprising 5899 DArTSNP and silicoDArT markers was used for the quantitative trait loci (QTL) analysis. The analysis showed five resistance loci on chromosomes 1B, 2B and 5B, four of which were derived from cv. Mandub. The location of QTL detected in our study on chromosomes 1B and 5B may suggest a possible identity or close linkage with Stb2/Stb11/StbWW and Stb1 loci, respectively. QStb.ihar-2B.4 and QStb.ihar-2B.5 detected on chromosome 2B do not co-localize with any known Stb genes. QStb.ihar-2B.4 seems to be a new resistance locus with a moderate effect (explaining 29.3% of NEC and 31.4% of PYC), conferring resistance at the seedling stage. The phenotypic variance explained by QTL detected in cv. Mandub ranged from 11.9% to 70.0%, thus proving that it is a good STB resistance source and can potentially be utilized in breeding programs.

scholarly journals Caterpillar salivary enzymes: "eliciting" a response

2004 ◽  
Vol 85 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Magali Merkx-Jacques ◽  
Jacqueline C. Bede
Keyword(s):  
Artificial Diet ◽  
Spodoptera Exigua ◽  
Induced Defense ◽  
Defense Responses ◽  
Beet Armyworm ◽  
Herbivorous Insect ◽  
Plant Responses ◽  
Plant Defense Responses ◽  
Induced Defense Responses ◽  
Bertha Armyworm

Abstract Plants exhibit remarkable plasticity in their ability to differentiate between herbivorous insect species and subtly adjust their defense responses to target distinct pests. One key mechanism used by plants to recognize herbivorous caterpillars is elicitors present in their oral secretions; however, these elicitors not only cause the induction of plant defenses but recent evidence suggests that they may also suppress plant responses. The absence of “expected changes” in induced defense responses of insect-infested plants has been attributed to hydrogen peroxide produced by caterpillar salivary glucose oxidase (GOX). Activity of this enzyme is variable among caterpillar species; it was detected in two generalist caterpillars, the beet armyworm (Spodoptera exigua) and the bertha armyworm (Mamestra configurata), but not in other generalist or specialist caterpillar species tested. In the beet armyworm, GOX activity fluctuated over larval development with high activity associated with the salivary glands of fourth instars. Larval salivary GOX activity of the beet armyworm and the bertha armyworm was observed to be significantly higher in caterpillars reared on artificial diet as compared with those reared on Medicago truncatula plants. This implies that a factor in the diet is involved in the regulation of caterpillar salivary enzyme activity. Therefore, plant diet may be regulating caterpillar oral elicitors that are involved in the regulation of plant defense responses: our goal is to understand these two processes.

scholarly journals Citronella essential oil in the control and activation of coffee plants defense response against rust and brown eye spot

2012 ◽  
Vol 36 (4) ◽  
pp. 383-390 ◽  
Author(s):  
Ricardo Borges Pereira ◽  
Gilvaine Ciavareli Lucas ◽  
Fabiano José Perina ◽  
Pedro Martins Ribeiro Júnior ◽  
Eduardo Alves
Keyword(s):  
Essential Oil ◽  
Induced Defense ◽  
Defense Responses ◽  
Plant Diseases ◽  
Negative Effects ◽  
Significant Control ◽  
Citronella Oil ◽  
Coffee Plants ◽  
Induced Defense Responses ◽  
Brown Eye Spot

The rust and brown eye spot are the main coffee diseases. The losses are due to intense defoliation of plants, which has reduced its production and longevity. The brown eye spot also occurs in fruits, with negative effects on the beverage quality. Some essential oils have presented promising results in the control of plant diseases, as an alternative to the use of fungicides. The objective of this study was to evaluate citronella essential oil in the control of rust and brown eye spot and in the activation of coffee plants defense responses. Twelve-month-old plants were sprayed with citronella oil 1000 µL L-1, acibenzolar-S-methyl 200 mg L-1 and tebuconazole fungicide 200 mg L-1. Plants were inoculated with Hemileia vastatrix and Cercospora coffeicola seven days later. The application was repeated after 30 days. Plants with five months were sprayed with the same treatments to assess the induced defense responses. Citronella oil controlled rust and brown eye spot with efficiencies of 47.2% and 29.7%, respectively, while tebuconazole presented control of 96.5% and 90.5%, respectively. Acibenzolar-S-methyl reduced brown eye spot by 55.9% and showed no significant control of rust. Citronella oil increased peroxidase and chitinase activities in five months coffee plants 336, and 24 and 336 hours after spraying, respectively. Acibenzolar-S-methyl increased peroxidase, chitinase and ββ-1,3-glucanase activities 192, 288 and 336; 24 and; 240 hours after spraying, respectively. The treatments did not increase accumulation of phenols, but a significant increase in lignin was observed in plants sprayed with citronella oil.

Accuracy of within- and among-family genomic prediction for Fusarium head blight and Septoria tritici blotch in winter wheat

2018 ◽  
Vol 132 (4) ◽  
pp. 1121-1135 ◽  
Author(s):  
Cathérine Pauline Herter ◽  
Erhard Ebmeyer ◽  
Sonja Kollers ◽  
Viktor Korzun ◽  
Tobias Würschum ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Fusarium Head Blight ◽  
Genomic Prediction ◽  
Septoria Tritici Blotch ◽  
Septoria Tritici ◽  
Head Blight

scholarly journals Precision phenotyping reveals novel loci for quantitative resistance to septoria tritici blotch in European winter wheat

2018 ◽  
Author(s):  
Steven Yates ◽  
Alexey Mikaberidze ◽  
Simon Krattinger ◽  
Michael Abrouk ◽  
Andreas Hund ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Winter Wheat ◽  
High Throughput ◽  
Quantitative Resistance ◽  
Small Chromosome ◽  
Snp Markers ◽  
Automated Image Analysis ◽  
Septoria Tritici Blotch ◽  
Septoria Tritici ◽  
Limiting Factor

Accurate, high-throughput phenotyping for quantitative traits is the limiting factor for progress in plant breeding. We developed automated image analysis to measure quantitative resistance to septoria tritici blotch (STB), a globally important wheat disease, enabling identification of small chromosome intervals containing plausible candidate genes for STB resistance. 335 winter wheat cultivars were included in a replicated field experiment that experienced natural epidemic development by a highly diverse but fungicide-resistant pathogen population. More than 5.4 million automatically generated phenotypes were associated with 13,648 SNP markers to perform a GWAS. We identified 26 chromosome intervals explaining 1.9-10.6% of the variance associated with four resistance traits. Seventeen of the intervals were less than 5 Mbp in size and encoded only 173 genes, including many genes associated with disease resistance. Five intervals contained four or fewer genes, providing high priority targets for functional validation. Ten chromosome intervals were not previously associated with STB resistance. Our experiment illustrates how high-throughput automated phenotyping can accelerate breeding for quantitative disease resistance. The SNP markers associated with these chromosome intervals can be used to recombine different forms of quantitative STB resistance that are likely to be more durable than pyramids of major resistance genes.

Tomatidine and lycotetraose, hydrolysis products of α-tomatine byFusarium oxysporumtomatinase, suppress induced defense responses in tomato cells

FEBS Letters ◽  
2004 ◽  
Vol 571 (1-3) ◽  
pp. 31-34 ◽  
Author(s):  
Shin-ichi Ito ◽  
Tomomi Eto ◽  
Shuhei Tanaka ◽  
Naoki Yamauchi ◽  
Hiroyuki Takahara ◽  
...  
Keyword(s):  
Induced Defense ◽  
Defense Responses ◽  
Hydrolysis Products ◽  
Induced Defense Responses
Sign in / Sign up

Export Citation Format

Share Document