Quantitative relationships between induced jasmonic acid levels and volatile emission in Zea mays during Spodoptera exigua herbivory
Jasmonic acid (JA) has long been hypothesized to be an important regulator of insect-induced volatile emission; however, current models are based primarily on circumstantial evidence derived from pharmacological studies. Using beet armyworm caterpillars (BAW: Spodoptera exigua) and intact corn seedl...
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description | Jasmonic acid (JA) has long been hypothesized to be an important regulator of insect-induced volatile emission; however, current models are based primarily on circumstantial evidence derived from pharmacological studies. Using beet armyworm caterpillars (BAW: Spodoptera exigua) and intact corn seedlings, we examine this hypothesis by measuring both the time-course of insect-induced JA levels and the relationships between endogenous JA levels, ethylene, indole and sesquiterpenes. In separate Morning and Evening time-course trials, BAW feeding stimulated increases in JA levels within the first 4—6 h and resulted in maximal increases in JA, indole, sesquiterpenes and ethylene 8—16 h later. During BAW herbivory, increases in JA either paralleled or preceded the increases in indole, sesquiterpenes and ethylene in the Morning and Evening trials, respectively. By varying the intensity of the BAW herbivory, we demonstrate that strong positive relationships exist between the resulting variation in insect-induced JA levels and volatile emissions such as indole and the sesquiterpenes. To address potential signaling interactions between herbivore-induced JA and ethylene, plants were pretreated with 1-methylcyclopropene (1-MCP), an inhibitor of ethylene perception. 1-MCP pretreatment resulted in reduced production of ethylene and volatile emission following BAW herbivory but did not alter the insect-induced accumulation of JA. Our results strongly support a role for JA in the regulation of insect-induced volatile emission but also suggest that ethylene perception regulates the magnitude of volatile emission during herbivory. |
doi_str_mv | 10.1007/s00425-002-0898-y |
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Using beet armyworm caterpillars (BAW: Spodoptera exigua) and intact corn seedlings, we examine this hypothesis by measuring both the time-course of insect-induced JA levels and the relationships between endogenous JA levels, ethylene, indole and sesquiterpenes. In separate Morning and Evening time-course trials, BAW feeding stimulated increases in JA levels within the first 4—6 h and resulted in maximal increases in JA, indole, sesquiterpenes and ethylene 8—16 h later. During BAW herbivory, increases in JA either paralleled or preceded the increases in indole, sesquiterpenes and ethylene in the Morning and Evening trials, respectively. By varying the intensity of the BAW herbivory, we demonstrate that strong positive relationships exist between the resulting variation in insect-induced JA levels and volatile emissions such as indole and the sesquiterpenes. To address potential signaling interactions between herbivore-induced JA and ethylene, plants were pretreated with 1-methylcyclopropene (1-MCP), an inhibitor of ethylene perception. 1-MCP pretreatment resulted in reduced production of ethylene and volatile emission following BAW herbivory but did not alter the insect-induced accumulation of JA. Our results strongly support a role for JA in the regulation of insect-induced volatile emission but also suggest that ethylene perception regulates the magnitude of volatile emission during herbivory.</description><identifier>ISSN: 0032-0935</identifier><identifier>EISSN: 1432-2048</identifier><identifier>DOI: 10.1007/s00425-002-0898-y</identifier><identifier>PMID: 12569409</identifier><identifier>CODEN: PLANAB</identifier><language>eng</language><publisher>Berlin: Springer-Verlag</publisher><subject>Animals ; Biological and medical sciences ; Caterpillars ; Corn ; Cyclopentanes - metabolism ; Cyclopropanes - pharmacology ; Emissions ; Ethylene production ; Ethylenes - antagonists & inhibitors ; Ethylenes - metabolism ; Fundamental and applied biological sciences. Psychology ; Herbivores ; Herbivory ; Host-Parasite Interactions ; Indoles ; Indoles - metabolism ; Infestation ; Insects ; Larva - growth & development ; Leaves ; Oxylipins ; Phytopathology. Animal pests. Plant and forest protection ; Phytophagous insects ; Plant Diseases - parasitology ; Plants ; Protozoa. 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Using beet armyworm caterpillars (BAW: Spodoptera exigua) and intact corn seedlings, we examine this hypothesis by measuring both the time-course of insect-induced JA levels and the relationships between endogenous JA levels, ethylene, indole and sesquiterpenes. In separate Morning and Evening time-course trials, BAW feeding stimulated increases in JA levels within the first 4—6 h and resulted in maximal increases in JA, indole, sesquiterpenes and ethylene 8—16 h later. During BAW herbivory, increases in JA either paralleled or preceded the increases in indole, sesquiterpenes and ethylene in the Morning and Evening trials, respectively. By varying the intensity of the BAW herbivory, we demonstrate that strong positive relationships exist between the resulting variation in insect-induced JA levels and volatile emissions such as indole and the sesquiterpenes. To address potential signaling interactions between herbivore-induced JA and ethylene, plants were pretreated with 1-methylcyclopropene (1-MCP), an inhibitor of ethylene perception. 1-MCP pretreatment resulted in reduced production of ethylene and volatile emission following BAW herbivory but did not alter the insect-induced accumulation of JA. Our results strongly support a role for JA in the regulation of insect-induced volatile emission but also suggest that ethylene perception regulates the magnitude of volatile emission during herbivory.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Caterpillars</subject><subject>Corn</subject><subject>Cyclopentanes - metabolism</subject><subject>Cyclopropanes - pharmacology</subject><subject>Emissions</subject><subject>Ethylene production</subject><subject>Ethylenes - antagonists & inhibitors</subject><subject>Ethylenes - metabolism</subject><subject>Fundamental and applied biological sciences. 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Psychology</topic><topic>Herbivores</topic><topic>Herbivory</topic><topic>Host-Parasite Interactions</topic><topic>Indoles</topic><topic>Indoles - metabolism</topic><topic>Infestation</topic><topic>Insects</topic><topic>Larva - growth & development</topic><topic>Leaves</topic><topic>Oxylipins</topic><topic>Phytopathology. Animal pests. Plant and forest protection</topic><topic>Phytophagous insects</topic><topic>Plant Diseases - parasitology</topic><topic>Plants</topic><topic>Protozoa. Invertebrates</topic><topic>Records, symptoms, damages, economic importance, population surveys</topic><topic>Seedlings</topic><topic>Sesquiterpenes</topic><topic>Sesquiterpenes - metabolism</topic><topic>Signal Transduction - drug effects</topic><topic>Signal Transduction - physiology</topic><topic>Spodoptera - growth & development</topic><topic>Volatilization - drug effects</topic><topic>Zea mays - metabolism</topic><topic>Zea mays - parasitology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Schmelz, Eric A.</creatorcontrib><creatorcontrib>Alborn, Hans T.</creatorcontrib><creatorcontrib>Banchio, Erika</creatorcontrib><creatorcontrib>Tumlinson, James H.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Chemoreception Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Agricultural Science Collection</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Agricultural Science Database</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Planta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Schmelz, Eric A.</au><au>Alborn, Hans T.</au><au>Banchio, Erika</au><au>Tumlinson, James H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quantitative relationships between induced jasmonic acid levels and volatile emission in Zea mays during Spodoptera exigua herbivory</atitle><jtitle>Planta</jtitle><addtitle>Planta</addtitle><date>2003-02-01</date><risdate>2003</risdate><volume>216</volume><issue>4</issue><spage>665</spage><epage>673</epage><pages>665-673</pages><issn>0032-0935</issn><eissn>1432-2048</eissn><coden>PLANAB</coden><abstract>Jasmonic acid (JA) has long been hypothesized to be an important regulator of insect-induced volatile emission; however, current models are based primarily on circumstantial evidence derived from pharmacological studies. Using beet armyworm caterpillars (BAW: Spodoptera exigua) and intact corn seedlings, we examine this hypothesis by measuring both the time-course of insect-induced JA levels and the relationships between endogenous JA levels, ethylene, indole and sesquiterpenes. In separate Morning and Evening time-course trials, BAW feeding stimulated increases in JA levels within the first 4—6 h and resulted in maximal increases in JA, indole, sesquiterpenes and ethylene 8—16 h later. During BAW herbivory, increases in JA either paralleled or preceded the increases in indole, sesquiterpenes and ethylene in the Morning and Evening trials, respectively. By varying the intensity of the BAW herbivory, we demonstrate that strong positive relationships exist between the resulting variation in insect-induced JA levels and volatile emissions such as indole and the sesquiterpenes. To address potential signaling interactions between herbivore-induced JA and ethylene, plants were pretreated with 1-methylcyclopropene (1-MCP), an inhibitor of ethylene perception. 1-MCP pretreatment resulted in reduced production of ethylene and volatile emission following BAW herbivory but did not alter the insect-induced accumulation of JA. Our results strongly support a role for JA in the regulation of insect-induced volatile emission but also suggest that ethylene perception regulates the magnitude of volatile emission during herbivory.</abstract><cop>Berlin</cop><pub>Springer-Verlag</pub><pmid>12569409</pmid><doi>10.1007/s00425-002-0898-y</doi><tpages>9</tpages></addata></record> |
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subjects | Animals Biological and medical sciences Caterpillars Corn Cyclopentanes - metabolism Cyclopropanes - pharmacology Emissions Ethylene production Ethylenes - antagonists & inhibitors Ethylenes - metabolism Fundamental and applied biological sciences. Psychology Herbivores Herbivory Host-Parasite Interactions Indoles Indoles - metabolism Infestation Insects Larva - growth & development Leaves Oxylipins Phytopathology. Animal pests. Plant and forest protection Phytophagous insects Plant Diseases - parasitology Plants Protozoa. Invertebrates Records, symptoms, damages, economic importance, population surveys Seedlings Sesquiterpenes Sesquiterpenes - metabolism Signal Transduction - drug effects Signal Transduction - physiology Spodoptera - growth & development Volatilization - drug effects Zea mays - metabolism Zea mays - parasitology |
title | Quantitative relationships between induced jasmonic acid levels and volatile emission in Zea mays during Spodoptera exigua herbivory |
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