Oxidative Responses of St. Augustinegrasses to Feeding of Southern Chinch Bug, Blissus insularis Barber

RANGASAMY, Murugesan ; RATHINASABAPATHI, Bala ; et al.

In: Journal of chemical ecology, Jg. 35 (2009), Heft 7, S. 796-805

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Southern chinch bug, Blissus insularis Barber (Hemiptera: Blissidae), is a serious insect pest of St. Augustinegrass, Stenotaphrum secundatum (Walt.) Kuntze, a turfgrass commonly grown in the southeastern United States. Resistance to southern chinch bug has been identified in the polyploid St. Augustinegrass varieties 'Floratam' and 'FX-10', and the diploid 'Captiva'. However, southern chinch bug in Florida and elsewhere has overcome Floratam's resistance. This research investigated the potential role of selected plant oxidative enzymes in resistance/susceptibility to southern chinch bug in two polyploid varieties (FX-10 and Floratam) and two diploid varieties (Captiva and Palmetto). Oxidative enzyme activity was estimated spectrophotometrically from plant samples collected 1, 3, 5, and 8 days after southern chinch bug infestation and from uninfested control plants. Resistant FX-10 and Captiva had significantly higher peroxidase activity, while Captiva had significantly higher polyphenol oxidase activity 5 and 8 days after infestation compared to uninfested controls. FX-10 had higher lipoxygenase activity 3, 5, and 8 days after infestation compared to uninfested controls. Catalase activities did not differ between infested and control plants in any of the varieties tested. Native gels stained for peroxidase indicated that certain isozymes in FX-10 and Captiva were induced 5 and 8 days after infestation. Isozyme profiles of polyphenol oxidase and lipoxygenase did not differ between control and infested FX-10, Floratam, Captiva, and Palmetto. Potential mechanisms to explain the correlation of resistance to southern chinch bug in FX-10 and Captiva with higher activities of oxidative enzymes are discussed.

Titel:	Oxidative Responses of St. Augustinegrasses to Feeding of Southern Chinch Bug, Blissus insularis Barber
Autor/in / Beteiligte Person:	RANGASAMY, Murugesan ; RATHINASABAPATHI, Bala ; MCAUSLANE, Heather J ; CHERRY, Ronald H ; NAGATA, Russell T
Link:	Full Text Finder (Volltext) E-Journal im Bestand der UB Hagen? View record from PASCAL Archive
Zeitschrift:	Journal of chemical ecology, Jg. 35 (2009), Heft 7, S. 796-805
Veröffentlichung:	New York, NY: Springer, 2009
Medientyp:	academicJournal
Umfang:	print, 1 p.3/4
ISSN:	0098-0331 (print)
Schlagwort:	Ecology Ecologie Environment Environnement Sciences biologiques et medicales Biological and medical sciences Sciences biologiques fondamentales et appliquees. Psychologie Fundamental and applied biological sciences. Psychology Ecologie animale, vegetale et microbienne Animal, plant and microbial ecology Ecologie animale et végétale Animal and plant ecology Autoécologie Autoecology Végétaux et champignons Plants and fungi Angiospermae Arthropoda Gramineae Insecta Invertebrata Monocotyledones Oxidoreductases Peroxidases Plante ornementale Ornamental crop Planta ornamental Spermatophyta Catalase Catechol oxidase Déprédateur Pest Plaga Enzyme Enzima Induction Inducción Mécanisme défense Defense mechanism Mecanismo defensa Plante herbacée Herbaceous plant Planta herbácea Plante hôte Host plant Planta huesped Relation animal végétal Animal plant relation Relación animal vegetal Résistance insecte Insect resistance Resistencia insecto Blissus insularis Stenotaphrum secundatum Blissidae Hemiptera Host plant resistance Lipoxygenase Oxidative enzymes Peroxides Polyphenol oxidase Southern chinch bug
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Department of Entomology and Nematology, University of Florida, Gainesville, FL 32611, United States ; Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, United States ; Everglades Research and Education Center, IFAS, Belle Glade, FL 33430, United States Rights: Copyright 2015 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Animal, vegetal and microbial ecology

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