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

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

2018 ◽  
Vol 59 (2) ◽  
pp. 439-439 ◽  
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

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.

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 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 Salicylic acid receptors activate jasmonic acid signalling through a non-canonical pathway to promote effector-triggered immunity

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Lijing Liu ◽  
Fathi-Mohamed Sonbol ◽  
Bethany Huot ◽  
Yangnan Gu ◽  
John Withers ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Canonical Pathway ◽  
Effector Triggered Immunity

Oligogalacturonides induce resistance in Arabidopsis thaliana by triggering salicylic acid and jasmonic acid pathways against Pst DC3000

2020 ◽  
Vol 164 ◽  
pp. 4054-4064
Author(s):  
Prianka Howlader ◽  
Santosh Kumar Bose ◽  
Xiaochen Jia ◽  
Chunlai Zhang ◽  
Wenxia Wang ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Induce Resistance

scholarly journals Limitation of Nocturnal ATP Import into Chloroplasts Seems to Affect Hormonal Crosstalk, Prime Defense, and Enhance Disease Resistance in Arabidopsis thaliana

2010 ◽  
Vol 23 (12) ◽  
pp. 1584-1591 ◽  
Author(s):  
Gudrun Schmitz ◽  
Thomas Reinhold ◽  
Cornelia Göbel ◽  
Ivo Feussner ◽  
H. Ekkehard Neuhaus ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Pseudomonas Syringae ◽  
Pathogen Resistance ◽  
Short Day ◽  
Enhanced Resistance ◽  
Genes Encoding ◽  
Hormonal Crosstalk ◽  
Hyaloperonospora Arabidopsidis

When grown under short-day conditions at low light, leaves of an Arabidopsis thaliana (accession Col-0) mutant with defects in the two genes encoding plastid ATP/ADP antiporters (so-called ntt1-2 null mutants) display a variety of physiological changes. These include the formation of necrotic lesions and the accumulation of hydrogen peroxide in the leaves. Here, we show that, under short-day conditions, leaves of the ntt1-2 mutant display enhanced resistance to Hyaloperonospora arabidopsidis, Botrytis cinerea, and Pseudomonas syringae pv. tomato DC3000. Resistance to these pathogens was associated with constitutively elevated levels of the plant hormone salicylic acid and, eventually, jasmonic acid, and constitutive or primed activation after pathogen attack of various defense genes that are dependent on these hormones. In addition, the antagonistic crosstalk between the salicylic acid and jasmonic acid signaling pathways seems to be affected in ntt1-2. Because the enhanced resistance of ntt1-2 to H. arabidopsidis was not seen when the mutant was grown under long-day conditions, our findings argue that nocturnal ATP import into chloroplasts is crucial to keep A. thaliana from runaway activation of pathogen resistance.

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