scholarly journals Lyonet’s gland of the tomato fruitworm, Helicoverpa zea (Lepidoptera: Noctuidae)

2019 ◽  
Vol 5 ◽  
Author(s):  
Sulav Paudel ◽  
Istvan Miko ◽  
Edwin Rajotte ◽  
Gary Felton
Keyword(s):  
Salivary Gland ◽  
Confocal Microscopy ◽  
Glucose Oxidase ◽  
Helicoverpa Zea ◽  
Labial Gland ◽  
Labial Salivary Gland ◽  
Future Studies ◽  
Silk Production ◽  
Lepidoptera Noctuidae ◽  
Tomato Fruitworm

The Lyonet’s gland is a widespread accessory labial gland in Lepidoptera. Although its function is ambiguous, the Lyonet’s gland arguably plays an important role in silk production. Our knowledge of the Lyonet’s gland in heliothine species is extremely limited; it is reportedly missing fromHelicoverpaarmigeraandHeliothisvirescens, whereas it is reportedly reduced in size inHelicoverpazea. Using confocal microscopy and brightfield imaging, we show that the Lyonet’s gland inHelicoverpazeais present and the size is relatively enlarged relative to other lepidopterans. We also examined whether glucose oxidase, an abundant enzyme found in labial salivary gland is also present in the extracts of Lyonet’s gland, but we found no evidence of that. Based on the size and accessibility of the Lyonet’s gland, future studies should include transcriptomic and proteomics studies inH.zeato provide evidence for potential functions.

scholarly journals Lyonet’s gland of the tomato fruitworm, Helicoverpa zea (Lepidoptera: Noctuidae)

2018 ◽  
Author(s):  
Sulav Paudel ◽  
István Mikó ◽  
Andy Deans ◽  
Edwin Rajotte ◽  
Gary Felton
Keyword(s):  
Confocal Microscopy ◽  
Helicoverpa Zea ◽  
Labial Gland ◽  
Silk Production ◽  
Lepidoptera Noctuidae ◽  
Tomato Fruitworm

The Lyonet’s gland is a widespread accessory labial gland in Lepidoptera. Albeit its function is ambiguous, the Lyonet’s gland arguably plays an important role in silk production. Our knowledge on the Lyonet’s gland in heliothine species is limited; it is apparently missing from H. armigera and Heliothis virescence, whereas reduced in size in H. zea. Using confocal microscopy and brightfield imaging, we show that the Lyonet’s gland in Helicoverpa zea is present and the size is relatively enlarged relative to other lepidopterans.

Control of Helicoverpa zea in Tomatoes with Chlorantraniliprole Applied Through Drip Chemigation

2010 ◽  
Vol 11 (1) ◽  
pp. 21 ◽  
Author(s):  
Thomas P. Kuhar ◽  
James F. Walgenbach ◽  
Hélène B. Doughty
Keyword(s):  
North Carolina ◽  
Helicoverpa Zea ◽  
Field Trials ◽  
Single Application ◽  
Beneficial Arthropods ◽  
Worker Exposure ◽  
Anthranilic Diamide ◽  
Mammalian Toxicity ◽  
Tomato Fruitworm ◽  
Reduced Risk

Chlorantraniliprole (=Rynaxypyr) is a novel anthranilic diamide insecticide that is of interest to vegetable growers because of its low mammalian toxicity and systemic properties. Field trials were conducted between 2006 and 2008 in North Carolina and Virginia to test the efficacy of chlorantraniliprole as a drip chemigation treatment on tomatoes. Drip chemigation of chlorantraniliprole at various rates and intervals significantly reduced the percentage of tomatoes damaged by tomato fruitworm (Helicoverpa zea) comparable to that typically achieved from multiple foliar applications of insecticides. The best control was achieved with two applications of chlorantraniliprole at 0.074 kg ai/ha, or a single application at 0.099 kg ai/ha. Residual ingestion bioassays showed that chlorantraniliprole was effectively taken up by the roots and was active in leaves up to 66 days after treatment (DAT), active in blossoms up to 22 DAT, but was not active in fruit. Drip chemigation of chlorantraniliprole may offer several advantages over foliar applications, including ease of application, reduced pesticide input into the environment, reduced worker exposure to pesticides, and reduced risk to beneficial arthropods. Accepted for publication 14 January 2010. Published 7 April 2010.

Lipid composition of human labial salivary gland secretions

1983 ◽  
Vol 28 (8) ◽  
pp. 711-714 ◽  
Author(s):  
B.L. Slomiany ◽  
E. Zdebska ◽  
V.L.N. Murty ◽  
A. Slomiany ◽  
K. Petropoulou ◽  
...  
Keyword(s):  
Salivary Gland ◽  
Lipid Composition ◽  
Labial Salivary Gland

Comparison of Labial Minor Salivary Gland Biopsies from Childhood Sjögren Syndrome and Age-matched Controls

2014 ◽  
Vol 41 (6) ◽  
pp. 1178-1182 ◽  
Author(s):  
Naoto Yokogawa ◽  
Scott M. Lieberman ◽  
Faizan Alawi ◽  
Sharon Bout-Tabaku ◽  
Marta Guttenberg ◽  
...  
Keyword(s):  
Salivary Gland ◽  
Minor Salivary Gland ◽  
Sjögren Syndrome ◽  
Classification Criteria ◽  
Sjogren Syndrome ◽  
Labial Salivary Gland ◽  
Focus Score ◽  
Salivary Gland Tissue ◽  
Gland Tissue ◽  
Control Samples

Objective.To determine an appropriate focus score cutoff for childhood Sjögren syndrome (SS).Methods.Labial salivary gland tissue from specimens from children with SS and age-matched controls was retrospectively identified and reviewed by a blinded oral pathologist.Results.The presence of any focal sialadenitis (focus score > 0 foci/4 mm2) was common among childhood SS samples but present in only 1 of 8 control samples.Conclusion.The presence of any focal lymphocytic sialadenitis in minor labial salivary gland tissue is suggestive of childhood SS and should be included in future childhood SS-specific diagnostic or classification criteria.

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