Endophytic fungus Acrophialophora jodhpurensis induced resistance against tomato early blight via interplay of reactive oxygen species, iron and antioxidants

2021 ◽  
pp. 101681
Author(s):  
Zoha Daroodi ◽  
Parissa Taheri ◽  
Saeed Tarighi
Keyword(s):  
Reactive Oxygen Species ◽  
Induced Resistance ◽  
Endophytic Fungus ◽  
Early Blight ◽  
Reactive Oxygen ◽  
Oxygen Species

StCDPK5 confers resistance to late blight pathogen but increases susceptibility to early blight pathogen in potato via reactive oxygen species burst

2012 ◽  
Vol 196 (1) ◽  
pp. 223-237 ◽  
Author(s):  
Michie Kobayashi ◽  
Miki Yoshioka ◽  
Shuta Asai ◽  
Hironari Nomura ◽  
Kazuo Kuchimura ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Late Blight ◽  
Early Blight ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Late Blight Pathogen ◽  
Reactive Oxygen Species Burst

scholarly journals Production of reactive oxygen species and wound-induced resistance in Arabidopsis thaliana against Botrytis cinerea are preceded and depend on a burst of calcium

2013 ◽  
Vol 13 (1) ◽  
pp. 160 ◽  
Author(s):  
Emna Beneloujaephajri ◽  
Alex Costa ◽  
Floriane L’Haridon ◽  
Jean-Pierre Métraux ◽  
Matteo Binda
Keyword(s):  
Reactive Oxygen Species ◽  
Arabidopsis Thaliana ◽  
Botrytis Cinerea ◽  
Induced Resistance ◽  
Reactive Oxygen ◽  
Oxygen Species

Phosphite-induced reactive oxygen species production and ethylene and ABA biosynthesis, mediate the control of Phytophthora capsici in pepper (Capsicum annuum)

2016 ◽  
Vol 43 (6) ◽  
pp. 563 ◽  
Author(s):  
Peiqing Liu ◽  
Benjin Li ◽  
Ming Lin ◽  
Guoliang Chen ◽  
Xueling Ding ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Capsicum Annuum ◽  
Induced Resistance ◽  
Mycelial Growth ◽  
Phytophthora Capsici ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Antibiotic Effect ◽  
Pre Treatment ◽  
Aba Biosynthesis

Phytophthora capsici is an oomycete pathogen with a broad host range that inflicts significant damage in vegetables. Phosphite (Phi) is used to control oomycete diseases, but the molecular mechanisms underlying Phi-induced resistance to P. capsici are unknown. Thus, Phi-inhibited mycelial growth on strain LT1534 and primed host defence were analysed. We demonstrated that Phi (>5 µg mL–1) had a direct antibiotic effect on mycelial growth and zoospore production, and that mortality and DNA content were significantly reduced by pre-treatment with Phi. In addition, elevated hydrogen peroxide (H2O2) promoted callose deposition and increased the levels of soluble proteins and Capsicum annuum L. pathogenesis-related 1 (CaPR1) expression. Furthermore, Phi (1 g L–1) significantly increased the transcription of the antioxidant enzyme genes, and the genes involved in ethylene (ET) and abscisic acid (ABA) biosynthesis, as well as mitogen-activated protein kinase (MAPK) cascades. However, pre-treatment with reactive oxygen species (ROS), ABA and ET biosynthesis inhibitors decreased Phi-induced resistance and reduced the expression of ABA-responsive 1 (CaABR1) and lipoxygenase 1 (CaLOX1). In addition, the decreased ROS and ABA inhibited Phi-induced expression of CaMPK17–1. We propose that Phi-induced ROS production, ET and ABA biosynthesis mediate the control of P. capsici, and that ABA functions through CaMPK17–1-mediated MAPK signalling.

Mitochondria as a source of reactive oxygen species

2009 ◽  
pp. c3 ◽  
Author(s):  
Helena M. Cochemé ◽  
Michael P. Murphy
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Oxygen Species

Clinical aspects of reactive oxygen and nitrogen species

2004 ◽  
Vol 71 ◽  
pp. 121-133 ◽  
Author(s):  
Ascan Warnholtz ◽  
Maria Wendt ◽  
Michael August ◽  
Thomas Münzel
Keyword(s):  
Oxidative Stress ◽  
Reactive Oxygen Species ◽  
Risk Factor ◽  
Endothelial Dysfunction ◽  
Vascular Tissue ◽  
Rapid Development ◽  
Reactive Oxygen ◽  
Clinical Aspects ◽  
No Production ◽  
Oxygen Species

Endothelial dysfunction in the setting of cardiovascular risk factors, such as hypercholesterolaemia, hypertension, diabetes mellitus and chronic smoking, as well as in the setting of heart failure, has been shown to be at least partly dependent on the production of reactive oxygen species in endothelial and/or smooth muscle cells and the adventitia, and the subsequent decrease in vascular bioavailability of NO. Superoxide-producing enzymes involved in increased oxidative stress within vascular tissue include NAD(P)H-oxidase, xanthine oxidase and endothelial nitric oxide synthase in an uncoupled state. Recent studies indicate that endothelial dysfunction of peripheral and coronary resistance and conductance vessels represents a strong and independent risk factor for future cardiovascular events. Ways to reduce endothelial dysfunction include risk-factor modification and treatment with substances that have been shown to reduce oxidative stress and, simultaneously, to stimulate endothelial NO production, such as inhibitors of angiotensin-converting enzyme or the statins. In contrast, in conditions where increased production of reactive oxygen species, such as superoxide, in vascular tissue is established, treatment with NO, e.g. via administration of nitroglycerin, results in a rapid development of endothelial dysfunction, which may worsen the prognosis in patients with established coronary artery disease.

Fas ligand expression in rat kupffer cells in response to lipopolysaccharide is mediated by reactive oxygen species

2001 ◽  
Vol 120 (5) ◽  
pp. A361-A361
Author(s):  
K UCHIKURA ◽  
T WADA ◽  
Z SUN ◽  
S HOSHINO ◽  
G BULKLEY ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Kupffer Cells ◽  
Fas Ligand ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Ligand Expression
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