scholarly journals ERECTA, salicylic acid, abscisic acid, and jasmonic acid modulate quantitative disease resistance of Arabidopsis thaliana to Verticillium longisporum

2014 ◽  
Vol 14 (1) ◽  
pp. 85 ◽  
Author(s):  
Eva Häffner ◽  
Petr Karlovsky ◽  
Richard Splivallo ◽  
Anna Traczewska ◽  
Elke Diederichsen
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Abscisic Acid ◽  
Disease Resistance ◽  
Jasmonic Acid ◽  
Quantitative Disease Resistance ◽  
Verticillium Longisporum

scholarly journals Facilitation of Fusarium graminearum Infection by 9-Lipoxygenases in Arabidopsis and Wheat

2015 ◽  
Vol 28 (10) ◽  
pp. 1142-1152 ◽  
Author(s):  
Vamsi J. Nalam ◽  
Syeda Alam ◽  
Jantana Keereetaweep ◽  
Barney Venables ◽  
Dehlia Burdan ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Disease Resistance ◽  
Jasmonic Acid ◽  
Fusarium Graminearum ◽  
Head Blight ◽  
Enhanced Resistance ◽  
Susceptibility Factors ◽  
Ja Signaling ◽  
Important Disease

Fusarium graminearum causes Fusarium head blight, an important disease of wheat. F. graminearum can also cause disease in Arabidopsis thaliana. Here, we show that the Arabidopsis LOX1 and LOX5 genes, which encode 9-lipoxygenases (9-LOXs), are targeted during this interaction to facilitate infection. LOX1 and LOX5 expression were upregulated in F. graminearum–inoculated plants and loss of LOX1 or LOX5 function resulted in enhanced disease resistance in the corresponding mutant plants. The enhanced resistance to F. graminearum infection in the lox1 and lox5 mutants was accompanied by more robust induction of salicylic acid (SA) accumulation and signaling and attenuation of jasmonic acid (JA) signaling in response to infection. The lox1- and lox5-conferred resistance was diminished in plants expressing the SA-degrading salicylate hydroxylase or by the application of methyl-JA. Results presented here suggest that plant 9-LOXs are engaged during infection to control the balance between SA and JA signaling to facilitate infection. Furthermore, since silencing of TaLpx-1 encoding a 9-LOX with homology to LOX1 and LOX5, resulted in enhanced resistance against F. graminearum in wheat, we suggest that 9-LOXs have a conserved role as susceptibility factors in disease caused by this important fungus in Arabidopsis and wheat.

scholarly journals  Resistance of Arabidopsis thaliana to the obligate biotrophic parasite Plasmodiophora brassicae

2017 ◽  
Vol 38 (SI 2 - 6th Conf EFPP 2002) ◽  
pp. 519-522 ◽  
Author(s):  
A. Arbeiter ◽  
M. Fähling ◽  
H. Graf ◽  
M.D. Sacristán ◽  
J. Siemens
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Resistance Gene ◽  
Resistance Genes ◽  
Plasmodiophora Brassicae ◽  
Chromosome 1 ◽  
Coding Sequences ◽  
Resistance Phenotype ◽  
Resistance Reaction

Two resistance phenotypes to P. brassicae have been found in A. thaliana. A first resistance phenotype has been detected to the isolate 'e<sub>2</sub>' and is polygenically inherited. The second resistance to isolate 'e<sub>3</sub>' is caused by the dominant resistance gene RPB1. By crossing no influence could be shown for salicylic acid, jasmonic acid and ethylene in the latter resistance reaction. The RPB1 locus was narrowed down to 71 kb on chromosome 1, where three pseudogenes and 13 coding sequences are located. Six of them showed cosegregation with RPB1. None of these sequences have similarities to identified resistance genes or other known genes. Ten coding sequences were expressed, but CDS9 was exclusively expressed in the resistant ecotype Tsu-0.

scholarly journals Salicylic Acid and Jasmonic Acid Pathways are Activated in Spatially Different Domains Around the Infection Site During Effector-Triggered Immunity in Arabidopsis thaliana

2017 ◽  
Vol 59 (1) ◽  
pp. 8-16 ◽  
Author(s):  
Shigeyuki Betsuyaku ◽  
Shinpei Katou ◽  
Yumiko Takebayashi ◽  
Hitoshi Sakakibara ◽  
Nobuhiko Nomura ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Infection Site ◽  
Effector Triggered Immunity

Airborne fungus-induced biosynthesis of anthocyanins in Arabidopsis thaliana via jasmonic acid and salicylic acid signaling

Plant Science ◽  
2020 ◽  
Vol 300 ◽  
pp. 110635
Author(s):  
Yajun Liu ◽  
Ming Li ◽  
Tongtong Li ◽  
Yujie Chen ◽  
Lingjie Zhang ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Salicylic Acid Signaling ◽  
Airborne Fungus

scholarly journals Salicylic Acid and Jasmonic Acid Signaling Defense Pathways Reduce Natural Bacterial Diversity on Arabidopsis thaliana

2007 ◽  
Vol 20 (12) ◽  
pp. 1512-1522 ◽  
Author(s):  
Joel M. Kniskern ◽  
M. Brian Traw ◽  
Joy Bergelson
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Plant Defense ◽  
Bacterial Diversity ◽  
Bacterial Communities ◽  
Community Diversity ◽  
Plant Signaling ◽  
Terrestrial Plants ◽  
Wide Range

Terrestrial plants serve as large and diverse habitats for a wide range of pathogenic and nonpathogenic microbes, yet these communities are not well described and little is known about the effects of plant defense on microbial communities in nature. We designed a field experiment to determine how variation in two plant defense signaling pathways affects the size, diversity, and composition of the natural endophytic and epiphytic bacterial communities of Arabidopsis thaliana. To do this, we provide an initial characterization of these bacterial communities in one population in southwestern Michigan, United States, and we compare these two communities among A. thaliana mutants deficient in salicylic acid (SA) and jasmonic acid (JA) signaling defense pathways, controls, and plants with artificially elevated levels of defense. We identified 30 distinct bacterial groups on A. thaliana that differ in colony morphology and 16S rRNA sequence. We show that induction of SA-mediated defenses reduced endophytic bacterial community diversity, whereas plants deficient in JA-mediated defenses experienced greater epiphytic bacterial diversity. Furthermore, there was a positive relationship between total community size and diversity, indicating that relatively susceptible plants should, in general, harbor higher bacterial diversity. This experiment provides novel information about the ecology of bacteria on A. thaliana and demonstrates that variation in two specific plant-signaling defense pathways can influence bacterial diversity on plants.

scholarly journals Global Trends in Phytohormone Research: Google Trends Analysis Revealed African Countries Have Higher Demand for Phytohormone Information

Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1248
Author(s):  
Tapan Kumar Mohanta ◽  
Yugal Kishore Mohanta ◽  
Dhananjay Yadav ◽  
Abeer Hashem ◽  
Elsayed Fathi Abd_Allah ◽  
...  
Keyword(s):  
United States ◽  
Salicylic Acid ◽  
Abscisic Acid ◽  
Jasmonic Acid ◽  
United States Of America ◽  
World Wide ◽  
The United States ◽  
Google Trends ◽  
Search Terms ◽  
The World

The lines of research conducted within a country often reflect its focus on current and future economic needs. Analyzing “search” trends on the internet can provide important insight into predicting the direction of a country in regards to agriculture, health, economy, and other areas. ‘Google Trends’ collects data on search terms from different countries, and this information can be used to better understand sentiments in different countries and regions. Agricultural output is responsible for feeding the world and there is a continuous quest to find ways to make agriculture more productive, safe, and reliable. The application of phytohormones has been used in agriculture world-wide for many years to improve crop production and continues to be an active area of research for the application in plants. Therefore, in the current study, we searched ‘Google Trends’ using the phytohormone search terms, abscisic acid, auxins, brassinosteroids, cytokinin, ethylene, gibberellins, jasmonic acid, salicylic acid, and strigolactones. The results indicated that the African country Zambia had the greatest number of queries on auxin research, and Kenya had the most queries in cytokinin and gibberellin research world-wide. For other phytohormones, India had the greatest number of queries for abscisic acid and South Korea had the greatest number of ethylene and jasmonic acid search world-wide. Queries on salicylic acid have been continuously increasing while the least number of queries were related to strigolactones. Only India and United States of America had significant numbers of queries on all nine phytohormones while queries on one or more phytohormones were absent in other countries. India is one of the top five crop-producing countries in the world for apples, millet, orange, potato, pulses, rice, sugarcane, tea, and wheat. Similarly, the United States of America is one of the top five crop-producing countries of the world for apples, grapes, maze, orange, potato, sorghum, sugarcane, and wheat. These might be the most possible factors for the search queries found for all the nine phytohormones in India and the United States of America.

scholarly journals Effect of Different Hormones on Disease Resistance against Bacterial Blight in Pomegranate

2021 ◽  
Vol 10 (10) ◽  
pp. 565-571
Author(s):  
Mahesh S. Dashyal M. P. Basavarajappa ◽  
G. Manjunath D. P. Prakash ◽  
Sayeed Wajeed R. Mulla Anita Rajkumar Ghandhe
Keyword(s):  
Salicylic Acid ◽  
Disease Resistance ◽  
Jasmonic Acid ◽  
Disease Severity ◽  
Bacterial Blight ◽  
Economic Losses ◽  
Greenhouse Condition ◽  
Xanthomonas Axonopodis ◽  
Novel Approach ◽  
The Impact

Bacterial blight in pomegranate is a major disease caused by Xanthomonas axonopodis pv. punicae, which has resulted in significant economic losses in terms of both quality and quantity. The ineffectiveness of most chemicals in controlling this disease has shifted grower attention to the quest for a new molecule and hence the use of plant growth regulators and signaling molecules is a novel approach to control the disease as well as improving quality and quantity attributes of pomegranate. Hence, the aim of present study was to determine the impact of plant hormones like ethylene, jasmonic acid and salicylic acid on bacterial blight of pomegranate. Among different hormones applied, ethrel application shown maximum disease severity (33.2%) and salicylic acid shown lowest disease severity (15.08%) under greenhouse condition.

scholarly journals Transcriptome Analysis of Genes Involved in Aluminum Stress Responses in Peanut (Arachis Hypogaea L.)

2021 ◽  
Author(s):  
Gegen Bao ◽  
Shengyu Li ◽  
Qi Zhou ◽  
Umair Ashraf ◽  
Jingxuan Qiao ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Transcription Factors ◽  
Abscisic Acid ◽  
Jasmonic Acid ◽  
Stress Tolerance ◽  
Arachis Hypogaea ◽  
Transcriptome Analysis ◽  
Stress Responses ◽  
Al Tolerance ◽  
Al Stress

Abstract Background Aluminum (Al) contamination inhibits plant growth and development, however, mechanisms involved in Al stress tolerance in peanut (Arachis hypogaea L.) were rarely studied. The present study was comprised of four Al levels i.e., 0, 1.25, 2.5 and 5 mmol l−1 AlCl3.18H2O regarded as Al0, Al1, Al2, and Al3. The respective concentrations were added in Hoagland nutrient solution and replaced every three days. Result Results revealed that seeding length low Al concentration (Al1) treatment had no noticeable effect on seeding lenght, while higher Al concentration (Al2 and Al3) treatment significantly inhibited seeding lenght. The differentially expressed genes (DEGs) of plant hormone metabolism pathway were significantly enriched whereas the contents of salicylic acid (SA) and abscisic acid (ABA) were up-regulated, and jasmonic acid (JA) were down-regulated to different levels. Moreover, transcription factors (TFs) and ALMT9 and FRDL1 genes were up-regulated at higher Al concentration and down-regulated at the lowest Al concentration (Al1). Conclusions Overall, Higher Al concentrations up-regulated the expression of transcription factors (TFs), and ALMT9 and FRDL1 genes to resist the stress of high Al concentrations whereas transcriptome analysis revealed that Al stress tolerance is closely related to endogenous hormone contents i.e., salicylic acid (SA), abscisic acid (ABA), and jasmonic acid (JA). This study preliminarily analyzed the molecular mechanism of Al tolerance in peanut and provided a theoretical rationale for developing new Al-tolerant peanut cultivars.

Sign in / Sign up

Export Citation Format

Share Document