Fungal pathogen uses sex pheromone receptor for chemotropic sensing of host plant signals

Nature ◽  
2015 ◽  
Vol 527 (7579) ◽  
pp. 521-524 ◽  
Author(s):  
David Turrà ◽  
Mennat El Ghalid ◽  
Federico Rossi ◽  
Antonio Di Pietro
Keyword(s):  
Sex Pheromone ◽  
Host Plant ◽  
Fungal Pathogen ◽  
Pheromone Receptor ◽  
Plant Signals

scholarly journals Olfactory receptor phylogeny reveals conserved channels for sex pheromone and host plant signals in tortricid moths

Authorea ◽  
2020 ◽  
Author(s):  
Francisco Gonzalez ◽  
Felipe Borrero Echeverry ◽  
Julia Josvai ◽  
Maria Strandh ◽  
Rikard Unelius ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Host Plant ◽  
Olfactory Receptor ◽  
Plant Signals ◽  
Receptor Phylogeny

scholarly journals Odorant receptor phylogeny confirms conserved channels for sex pheromone and host plant signals in tortricid moths

2020 ◽  
Vol 10 (14) ◽  
pp. 7334-7348
Author(s):  
Francisco Gonzalez ◽  
Felipe Borrero‐Echeverry ◽  
Júlia K. Jósvai ◽  
Maria Strandh ◽  
C. Rikard Unelius ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Host Plant ◽  
Odorant Receptor ◽  
Plant Signals ◽  
Receptor Phylogeny

scholarly journals The Fungal Effector Avr-Pita Suppresses Innate Immunity by Increasing COX Activity in Rice Mitochondria

Rice ◽  
2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Jingluan Han ◽  
Xiaoyu Wang ◽  
Fengpin Wang ◽  
Zhe Zhao ◽  
Gousi Li ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Host Plant ◽  
Fungal Pathogen ◽  
Defense Responses ◽  
Oxygen Species ◽  
Mitochondrial Reactive Oxygen Species ◽  
Molecular Pattern ◽  
Ros Accumulation ◽  
Ros Metabolism ◽  
Increased Susceptibility

Abstract Background Avr-Pita was the first effector identified in the blast fungus (Magnaporthe oryzae)–rice (Oryza sativa) pathosystem. However, the molecular mechanism underlying its effects on the host plant has remained a long-standing mystery. Results Here, we report that ectopically expressing Avr-Pita in rice enhances susceptibility to M. oryzae and suppresses pathogen-associated molecular pattern (PAMP)-triggered defense responses. Avr-Pita targets the host mitochondria and interacts with the cytochrome c oxidase (COX) assembly protein OsCOX11, a key regulator of mitochondrial reactive oxygen species (ROS) metabolism in rice. Overexpressing Avr-Pita or OsCOX11 increased COX activity and decreased ROS accumulation triggered by the fungal PAMP chitin. OsCOX11-overexpressing plants showed increased susceptibility to M. oryzae, whereas OsCOX11-knockdown plants showed resistance to M. oryzae. Conclusions Taken together, these findings suggest that the fungal pathogen M. oryzae delivers the effector Avr-Pita to the host plant, where it enhances COX activity thus decreasing ROS accumulation. Therefore, this effector suppresses host innate immunity by perturbing ROS metabolism in the mitochondria.

scholarly journals Concurrent modulation of neuronal and behavioural olfactory responses to sex and host plant cues in a male moth

2015 ◽  
Vol 282 (1799) ◽  
pp. 20141884 ◽  
Author(s):  
Sophie H. Kromann ◽  
Ahmed M. Saveer ◽  
Muhammad Binyameen ◽  
Marie Bengtsson ◽  
Göran Birgersson ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Host Plant ◽  
Olfactory System ◽  
Plant Volatiles ◽  
Physiological Condition ◽  
Response Modulation ◽  
Male Attraction ◽  
Olfactory Responses ◽  
Animal Physiology ◽  
Adult Food

Mating has profound effects on animal physiology and behaviour, not only in females but also in males, which we show here for olfactory responses. In cotton leafworm moths, Spodoptera littoralis , odour-mediated attraction to sex pheromone and plant volatiles are modulated after mating, producing a behavioural response that matches the physiological condition of the male insect. Unmated males are attracted by upwind flight to sex pheromone released by calling females, as well as to volatiles of lilac flowers and green leaves of the host plant cotton, signalling adult food and mating sites, respectively. Mating temporarily abolishes male attraction to females and host plant odour, but does not diminish attraction to flowers. This behavioural modulation is correlated with a response modulation in the olfactory system, as shown by electro-physiological recordings from antennae and by functional imaging of the antennal lobe, using natural odours and synthetic compounds. An effect of mating on the olfactory responses to pheromone and cotton plant volatiles but not to lilac flowers indicates the presence of functionally independent neural circuits within the olfactory system. Our results indicate that these circuits interconnect and weigh perception of social and habitat odour signals to generate appropriate behavioural responses according to mating state.

scholarly journals A Single Sex Pheromone Receptor Determines Chemical Response Specificity of Sexual Behavior in the Silkmoth Bombyx mori

PLoS Genetics ◽  
2011 ◽  
Vol 7 (6) ◽  
pp. e1002115 ◽  
Author(s):  
Takeshi Sakurai ◽  
Hidefumi Mitsuno ◽  
Stephan Shuichi Haupt ◽  
Keiro Uchino ◽  
Fumio Yokohari ◽  
...  
Keyword(s):  
Sexual Behavior ◽  
Sex Pheromone ◽  
Bombyx Mori ◽  
Pheromone Receptor ◽  
Single Sex ◽  
Chemical Response ◽  
Response Specificity
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