Secretagogue Mechanism of Digestive Enzyme Secretion in the Midgut of Andrallus spinidens Fabricius (Hemiptera: Pentatomidae)

Sorkhabi-Abdolmaleki, Sahar; Zibaee, Arash

doi:10.1007/s40011-013-0209-3

Cited by 2 publications

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“…The positive relationship between trypsin (and other protease) activity and protein content in food has been recorded in insects with different feeding habits: phytophages (Broadway & Duffey, ; Ivanović et al., ; Janković‐Tomanić, ), hematophages (Felix et al., ), and predators (Bell et al., ; Sorkhabi‐Abdolmaleki & Zibaee, ). For instance, in the polyphagous cotton bollworm, Helicoverpa armigera (Hübner), protease and trypsin activities were highest in larvae fed on chickpea and pigonpea, legume host plants with the highest protein content among examined hosts (Patankar et al., ; Kotkar et al., ; Sarate et al., ).…”

Section: Structural Diversity Of Insect Digestive Trypsinsmentioning

confidence: 99%

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Dietary and phylogenetic correlates of digestive trypsin activity in insect pests

Lazarević

Janković-Tomanić

2015

Entomologia Exp Applicata

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Because food proteins are crucial for insect survival, growth, and fecundity, enzymes involved in their digestion have attracted the attention of fundamental entomologists studying the mechanisms and patterns of dietary specialization, and applied entomologists searching for more efficient modes of pest control. Most insects digest proteins using trypsin, an endopeptidase that cleaves polypeptide chains on the carboxyl side of arginine and lysine, two basic amino acids. As the most ancestral proteinase, trypsin is wide-spread in the digestive tract of insects from various orders and with various feeding habits. The present review focuses on biochemical and molecular characteristics, mechanisms of regulation, and adaptive/non-adaptive changes of trypsin activity in response to heterogeneous food environments in a phylogenetic context. Within-and among-species variations in trypsin structure and regulation that contribute to better matching with specific food types are emphasized. We also discuss the relevance of these data for choosing an appropriate strategy for control of insect pests. Pest control strategies to reduce trypsin activity by interfering with substrate binding or trypsin synthesis and secretion have been suggested. Successful application of these procedures requires a multidisciplinary approach and knowledge about digestive physiology of the pest, as well as the structural characteristics of trypsins that determine their interaction with proteinaceous inhibitors and other food compounds, about patterns of developmental changes in trypsin gene expression, adaptive responses of insects to food composition, and various environmental effects on trypsin activity.

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Section: Structural Diversity Of Insect Digestive Trypsinsmentioning

confidence: 99%

“…In predatory Hemiptera (Bell et al., ; Sorkhabi‐Abdolmaleki & Zibaee, ) no trypsin activity in the gut of starved individuals has been detected. However, high trypsin activity was found in the salivary glands of a starving heteropteran predator, Zelus renardii Kolenati.…”

Section: Structural Diversity Of Insect Digestive Trypsinsmentioning

confidence: 99%