scholarly journals Synthetic pheromone exposure increases calling and reduces subsequent mating in female Contarinia nasturtii ( Diptera: Cecidomyiidae )

2020 ◽  
Vol 77 (1) ◽  
pp. 548-556
Author(s):  
Elisabeth A Hodgdon ◽  
Rebecca H Hallett ◽  
James D Heal ◽  
Andrea EM Swan ◽  
Yolanda H Chen
Keyword(s):  
Synthetic Pheromone ◽  
Contarinia Nasturtii

Occurrence of the New Invasive Insect Contarinia nasturtii (Diptera: Cecidomyiidae) on Cruciferous Weeds

2009 ◽  
Vol 102 (1) ◽  
pp. 115-120 ◽  
Author(s):  
Mao Chen ◽  
Anthony M. Shelton ◽  
Ping Wang ◽  
Christy A. Hoepting ◽  
Wendy C. Kain ◽  
...  
Keyword(s):  
Invasive Insect ◽  
Contarinia Nasturtii

scholarly journals Pheromone-Induced G2 Arrest in the Phytopathogenic Fungus Ustilago maydis

2003 ◽  
Vol 2 (3) ◽  
pp. 494-500 ◽  
Author(s):  
Tatiana García-Muse ◽  
Gero Steinberg ◽  
José Pérez-Martín
Keyword(s):  
Cell Cycle ◽  
Ustilago Maydis ◽  
Phytopathogenic Fungus ◽  
Microtubule Organization ◽  
Mating Response ◽  
Cycle Arrest ◽  
Synthetic Pheromone ◽  
Genes Encoding ◽  
The Relationship ◽  
Corn Smut

ABSTRACT In the corn smut fungus Ustilago maydis, pathogenic development is initiated when two compatible haploid cells fuse and form the infectious dikaryon. Mating is dependent on pheromone recognition by compatible cells. In this report, we set out to evaluate the relationship between the cell cycle and the pheromone response in U. maydis. To achieve this, we designed a haploid pheromone-responsive strain that is able to faithfully reproduce the native mating response in nutrient-rich medium. Addition of synthetic pheromone to the responsive strain induces the formation of mating structures, and this response is abolished by mutations in genes encoding components of the pheromone signal transduction cascade. After recognition of pheromone, U. maydis cells arrest the cell cycle in a postreplicative stage. Visualization of the nucleus and microtubule organization indicates that the arrest takes place at the G2 phase. Chemical-induced cell cycle arrest and release in the presence of pheromone further support this conclusion.

Midge (Diptera: Cecidomyiidae) injury to Brassicaceae in field trials in northeastern Saskatchewan, Canada

2018 ◽  
Vol 150 (5) ◽  
pp. 637-651 ◽  
Author(s):  
Lars Andreassen ◽  
Juliana Soroka ◽  
Larry Grenkow ◽  
Owen Olfert ◽  
Rebecca H. Hallett
Keyword(s):  
Brassica Napus ◽  
Field Trials ◽  
Sinapis Alba ◽  
Camelina Sativa ◽  
Undescribed Species ◽  
Yellow Mustard ◽  
Field Crops ◽  
Ethiopian Mustard ◽  
Contarinia Nasturtii ◽  
Oriental Mustard

AbstractTo determine resistance of Brassicaceae field crops to Contarinia Róndani (Diptera: Cecidomyiidae) midge complex (Contarinia nasturtii Kieffer and Contarinia undescribed species), field trials of two different host assemblages were undertaken near Melfort, Saskatchewan, Canada in 2014 and repeated in 2015. In both years the first midge adults appeared in early July, when most plants were starting to flower, and a second generation occurred in mid-August, past the period of crop susceptibility. In a trial studying 18 lines of six brassicaceous species, the lowest probability of midge injury was found on Camelina sativa (Linnaeus) Crantz lines in both years. No differences were found in the probability of midge injury among any of the 13 Brassica Linnaeus species lines tested, including commercial glyphosate-resistant and glufosinate-resistant Brassica napus Linnaeus canola lines, Ethiopian mustard (Brassica carinata Braun), brown or oriental mustard (Brassica juncea (Linnaeus) Czernajew), or Polish canola (Brassica rapa Linnaeus) lines. Probability of midge injury on Sinapis alba Linnaeus yellow mustard lines reached levels between those on Camelina sativa lines and those on Brassica lines. A second trial examining 14 current commercial glyphosate-resistant Brassica napus canola cultivars found no differences in susceptibility to midge feeding among any cultivars tested. More plants were damaged in 2015 in both studies, and damage reached maximum levels earlier in 2015 than in 2014.

Monitoring and Control of Helicoverpa armigera by Synthetic Pheromone Traps in Peas, Pisum sativum

2003 ◽  
Vol 3 (10) ◽  
pp. 926-931 ◽  
Author(s):  
Muhammad Faheem Mali . ◽  
Daud-ur-Rehman . ◽  
Mansoor Ahmed Bajwa . ◽  
Naveed Latif Lodhi . ◽  
Liaquat Ali . ◽  
...  
Keyword(s):  
Pisum Sativum ◽  
Helicoverpa Armigera ◽  
Pheromone Traps ◽  
Monitoring And Control ◽  
Synthetic Pheromone ◽  
Helicoverpa Armígera ◽  
And Control

scholarly journals Attractiveness of Pheromone Components With and Without the Synergist, Methyl (2E,4E,6Z)-2,4,6-Decatrienoate, to Brown Marmorated Stink Bug (Hemiptera: Pentatomidae)

2019 ◽  
Vol 113 (2) ◽  
pp. 712-719 ◽  
Author(s):  
Donald C Weber ◽  
William R Morrison ◽  
Ashot Khrimian ◽  
Kevin B Rice ◽  
Brent D Short ◽  
...  
Keyword(s):  
Minor Component ◽  
Sympatric Species ◽  
Halyomorpha Halys ◽  
Brown Marmorated Stink Bug ◽  
Stink Bug ◽  
Efficient Synthesis ◽  
Synthetic Pheromone ◽  
Pheromone Components ◽  
Cost Efficient ◽  
Plautia Stali

Abstract The brown marmorated stink bug, Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) is attracted to its male-produced aggregation pheromone, a ~3.5:1 mixture of (3S,6S,7R,10S)- and (3R,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol (SSRS and RSRS respectively), and also to the pheromone of its Asian sympatric species Plautia stali Scott (Hemiptera: Pentatomidae), methyl (2E,4E,6Z)-2,4,6-decatrienoate (MDT). A stereoisomeric mixture of (7R) 10,11-epoxy-1-bisabolen-3-ols (= mixed murgantiols) is used together in commercialized products with MDT because the latter is a synergist for H. halys attraction to mixed murgantiols. However, the optimal ratio for MDT combination with mixed murgantiols, and the sensitivity of bug captures to variation in ratio of the two pheromone components, have not been tested to date. Using black pyramid traps at two sites (in Maryland and West Virginia, United States), different ratios of mixed murgantiols to MDT were tested over two entire seasons. Also, captures using various ratios of the two active pheromone stereoisomers were undertaken in month-long trials with and without MDT. Results showed that H. halys adult and nymphal captures were relatively insensitive to the ratio of synthetic pheromone (mixed murgantiols) to MDT, as long as each was present in the trap. Captures of adults and nymphs were responsive to the lure loading of the SSRS isomer, but relatively insensitive to levels of the minor component, RSRS. The relative insensitivity of H. halys to these attractant ratios gives flexibility to development of more cost-efficient synthesis and trapping as well as other semiochemical-based management tactics.

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