Lectins and Trypsin Inhibitors from Plants: Biochemical Characteristics and Adverse Effects on Insect Larvae

Patrícia M. G. Paiva
Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Brazil

Emmanuel V. Pontual
Departamento de Morfologia e Fisiologia Animal, Universidade Federal Rural de Pernambuco, Recife, Brazil

Thiago H. Napoleão
Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Brazil

Luana C. B. B. Coelho
Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Brazil

Series: Insects and Other Terrestrial Arthropods: Biology, Chemistry and Behavior, Microbiology Research Advances
BISAC: SCI008000

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Volume 10

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Special issue: Resilience in breaking the cycle of children’s environmental health disparities
Edited by I Leslie Rubin, Robert J Geller, Abby Mutic, Benjamin A Gitterman, Nathan Mutic, Wayne Garfinkel, Claire D Coles, Kurt Martinuzzi, and Joav Merrick

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Lectins are hemagglutinating proteins that promote cellular responses due to their interaction with glycosylated molecules. Trypsin inhibitors have been described as endogenous regulators of proteolytic enzymes and as storage proteins. Plant lectins and trypsin inhibitors with insecticidal activity may become an alternative to synthetic insecticides that adversely affect the environment and have promoted the emergence of resistant organisms. These proteins exert deleterious effects on larval survival, weight, feeding ability, and development of insects as well as morphology of larvae, pupae and adults.

The digestive processes in larval gut are highly active and their integrity is an essential aspect in insect development. Plant lectins and trypsin inhibitors can modulate the activity of digestive enzymes in larval gut. This book reports larvicidal lectins and trypsin inhibitors isolated from different plant tissues (e.g. bark, heartwood, leaves, flowers and seeds) with potential applications in the control of numerous insect species, including Achaea janata, Aedes aegypti, Anthonomus grandis, Callosobruchus maculatus, Corcyra cephalonica, Ephestia kuehniella, Helicoverpa armigera, Lacanobia oleracea, Ostrinia nubilalis, Spodoptera littoralis, Spodoptera litura and Zabrotes subfasciatus. The changes in morphology of larvae treated with lectins or trypsin inhibitors, as well as the effect of these proteins on larval á-amylase, â-glucosidase, protease and aminopeptidase activities, are also discussed. (Imprint: Nova)

Preface

Chapter 1: PLANT LECTINS AND TRYPSIN INHIBITORS: DETECTION, STRUCTURE, FUNCTIONS AND BIOLOGICAL ACTIVITIES

Chapter 2: LARVAE OF PESTS AND VECTORS AS TARGETS OF PLANT LECTINS AND TRYPSIN INHIBITORS

Chapter 3: EFFECTS OF PLANT LECTINS ON LARVAL SURVIVAL AND DEVELOPMENT

Chapter 4: EFFECTS OF PLANT TRYPSIN INHIBITORS ON LARVAL SURVIVAL AND DEVELOPMENT

Chapter 5: EFFECTS OF PLANT LECTINS AND TRYPSIN INHIBITORS ON LARVAL MORPHOLOGY

Chapter 6: MODULATION OF ENZYME ACTIVITIES FROM LARVAL GUT BY PLANT LECTINS AND TRYPSIN INHIBITORS

Chapter 7: FINAL CONSIDERATIONS

Acknowledgements

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