Overexpression of salicylic acid carboxyl methyltransferase reduces salicylic acid-mediated pathogen resistance in Arabidopsis thaliana

2007 ◽  
Vol 64 (1-2) ◽  
pp. 1-15 ◽  
Author(s):  
Yeon Jong Koo ◽  
Myeong Ae Kim ◽  
Eun Hye Kim ◽  
Jong Tae Song ◽  
Choonkyun Jung ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Pathogen Resistance ◽  
Carboxyl Methyltransferase

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.

scholarly journals Salicylic acid biosynthesis is enhanced and contributes to increased biotrophic pathogen resistance in Arabidopsis hybrids

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Li Yang ◽  
Bosheng Li ◽  
Xiao-yu Zheng ◽  
Jigang Li ◽  
Mei Yang ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Pseudomonas Syringae ◽  
Histone H3 ◽  
Bacterial Pathogen ◽  
Pathogen Resistance ◽  
Biosynthesis Pathway ◽  
Acid Biosynthesis ◽  
Histone H3 Acetylation ◽  
H3 Acetylation

Abstract Heterosis, the phenotypic superiority of a hybrid over its parents, has been demonstrated for many traits in Arabidopsis thaliana, but its effect on defence remains largely unexplored. Here, we show that hybrids between some A. thaliana accessions show increased resistance to the biotrophic bacterial pathogen Pseudomonas syringae pv. tomato (Pst) DC3000. Comparisons of transcriptomes between these hybrids and their parents after inoculation reveal that several key salicylic acid (SA) biosynthesis genes are significantly upregulated in hybrids. Moreover, SA levels are higher in hybrids than in either parent. Increased resistance to Pst DC3000 is significantly compromised in hybrids of pad4 mutants in which the SA biosynthesis pathway is blocked. Finally, increased histone H3 acetylation of key SA biosynthesis genes correlates with their upregulation in infected hybrids. Our data demonstrate that enhanced activation of SA biosynthesis in A. thaliana hybrids may contribute to their increased resistance to a biotrophic bacterial pathogen.

scholarly journals Arabidopsis thaliana cdd1 mutant uncouples the constitutive activation of salicylic acid signalling from growth defects

2011 ◽  
Vol 12 (9) ◽  
pp. 855-865 ◽  
Author(s):  
SWADHIN SWAIN ◽  
SHWETA ROY ◽  
JYOTI SHAH ◽  
SASKIA VAN WEES ◽  
CORNÉ M. PIETERSE ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Salicylic Acid ◽  
Constitutive Activation ◽  
Growth Defects

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 Expression of a WIPK-Activated Transcription Factor Results in Increase of Endogenous Salicylic Acid and Pathogen Resistance in Tobacco Plants

2006 ◽  
Vol 47 (8) ◽  
pp. 1169-1174 ◽  
Author(s):  
Frank Waller ◽  
Axel Müller ◽  
Kwi-Mi Chung ◽  
Yun-Kiam Yap ◽  
Kimiyo Nakamura ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Salicylic Acid ◽  
Pathogen Resistance ◽  
Tobacco Plants
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