scholarly journals Transcriptional Responses in the Hemiparasitic PlantTriphysaria versicolor to Host Plant Signals

2001 ◽  
Vol 127 (1) ◽  
pp. 272-282 ◽  
Author(s):  
Marta Matvienko ◽  
Manuel J. Torres ◽  
John I. Yoder
Keyword(s):  
Host Plant ◽  
Transcriptional Responses ◽  
Plant Signals

scholarly journals Feeding-induced rearrangement of green leaf volatiles reduces moth oviposition

eLife ◽  
2013 ◽  
Vol 2 ◽  
Author(s):  
Silke Allmann ◽  
Anna Späthe ◽  
Sonja Bisch-Knaden ◽  
Mario Kallenbach ◽  
Andreas Reinecke ◽  
...  
Keyword(s):  
Host Plant ◽  
Field Experiments ◽  
Green Leaf Volatiles ◽  
Green Leaf ◽  
Host Plant Selection ◽  
Structural Isomers ◽  
Datura Wrightii ◽  
Leaf Volatiles ◽  
Plant Signals ◽  
Predatory Insects

The ability to decrypt volatile plant signals is essential if herbivorous insects are to optimize their choice of host plants for their offspring. Green leaf volatiles (GLVs) constitute a widespread group of defensive plant volatiles that convey a herbivory-specific message via their isomeric composition: feeding of the tobacco hornworm Manduca sexta converts (Z)-3- to (E)-2-GLVs thereby attracting predatory insects. Here we show that this isomer-coded message is monitored by ovipositing M. sexta females. We detected the isomeric shift in the host plant Datura wrightii and performed functional imaging in the primary olfactory center of M. sexta females with GLV structural isomers. We identified two isomer-specific regions responding to either (Z)-3- or (E)-2-hexenyl acetate. Field experiments demonstrated that ovipositing Manduca moths preferred (Z)-3-perfumed D. wrightii over (E)-2-perfumed plants. These results show that (E)-2-GLVs and/or specific (Z)-3/(E)-2-ratios provide information regarding host plant attack by conspecifics that ovipositing hawkmoths use for host plant selection.

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 Dissecting transcriptomic signatures of genotype x genotype interactions during the initiation of plant-rhizobium symbiosis

2020 ◽  
Author(s):  
Camilla Fagorzi ◽  
Giovanni Bacci ◽  
Rui Huang ◽  
Lisa Cangioli ◽  
Alice Checcucci ◽  
...  
Keyword(s):  
Host Plant ◽  
Root Exudates ◽  
Sinorhizobium Meliloti ◽  
Transcriptional Response ◽  
Partner Choice ◽  
Plant Genotype ◽  
Hybrid Strain ◽  
Transcriptional Responses ◽  
Large Variability ◽  
Genes Expression

AbstractRhizobia are ecologically important, facultative plant symbiotic microbes. In nature there exists large variability in the association of rhizobial strains and host plant of the same species. Here, we evaluated whether plant and rhizobial genotypes influence the initial transcriptional response of rhizobium following perception of host plant. RNA-sequencing of the model rhizobium Sinorhizobium meliloti exposed to root exudates or luteolin was performed in a combination of three S. meliloti strains and three Medicago sativa varieties. The response to root exudates involved hundreds of changes in the rhizobium transcriptome. Of the differentially expressed genes, expression of 35% were influenced by strain genotype, 16% by the plant genotype, and 29% by strain x host plant genotype interactions. We also examined the response of a hybrid S. meliloti strain, in which the symbiotic megaplasmid (~ 20% of the genome) was mobilized between two of the above-mentioned strains. Dozens of genes resulted up-regulated in the hybrid strain, indicative of nonadditive variation in the transcriptome. In conclusion, this study demonstrated that transcriptional responses of rhizobia upon perception of legumes is influenced by the genotypes of both symbiotic partners, and their interaction, suggesting a wide genetic spectrum of partner choice selection in plant-rhizobium symbiosis.

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

The Endocrine System of Herbivores Listens to Host-Plant Signals

1998 ◽  
pp. 227-238
Author(s):  
L. M. Schoonhoven ◽  
T. Jermy ◽  
J. J. A. van Loon
Keyword(s):  
Host Plant ◽  
Endocrine System ◽  
Plant Signals

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
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