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Corngrass1 of maize (Zea mays L.) delays development of adult plant resistance to common rust (Puccinia sorghi Schw.) and European corn borer (Ostrinia nubilalis Hubner)

Based on morphological evidence, researchers have proposed that Corngrass1 (Cg1) of maize (Zea mays L.) is a heterochronic mutation that prolongs the juvenile- vegetative phase because distal tissues display juvenile traits that normally occur only basally. Physiological or biochemical evidence in s...

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Published in:	The Journal of heredity 1996-05, Vol.87 (3), p.219-223
Main Authors:	Abedon, B.G. (University of Wisconsin-Madison, Madison, WI.), Tracy, W.F
Format:	Article
Language:	English
Subjects:	Corn DOSAGE BIOLOGIQUE ENSAYO BIOLOGICO ETAPAS DE DESARROLLO DE LA PLANTA FEUILLE Flowers & plants GENETICA Genetics GENETIQUE HOJAS INFECCION INFECTION Lepidoptera MUTACION MUTATION OSTRINIA NUBILALIS PUCCINIA SORGHI RESISTANCE AUX MALADIES RESISTANCE AUX ORGANISMES NUISIBLES RESISTENCIA A LA ENFERMEDAD RESISTENCIA A LAS PLAGAS ROUILLE ROYA STADE DE DEVELOPPEMENT VEGETAL Tortricidae ZEA MAYS
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container_title	The Journal of heredity
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creator	Abedon, B.G. (University of Wisconsin-Madison, Madison, WI.) Tracy, W.F
description	Based on morphological evidence, researchers have proposed that Corngrass1 (Cg1) of maize (Zea mays L.) is a heterochronic mutation that prolongs the juvenile- vegetative phase because distal tissues display juvenile traits that normally occur only basally. Physiological or biochemical evidence in support of this hypothesis is lacking. Disease and insect resistance often depends on physiological, biochemical, and morphological factors and can vary during ontogeny. We evaluated resistance to common rust (Puccinia sorghi Schw.) and European corn borer (Ostrinia nubilalis Hubner) in Cg1 and wild-type segregating families in order to test the hypothesis that Cg1 is a heterochronic mutation that extends the juvenile-vegetative phase. In backgrounds with high expression, Cg1 mid-whorl leaves had similar resistance as Cg1 and wild-type seedling leaves, whereas wild-type mid-whorl leaves differed in resistance from the other three leaf types. In the Mo17 background, which has reduced Cg1 expression, Cg1 mid-whorl leaves had resistance levels intermediate between wild-type seedling and mid-whorl levels. These results support the hypothesis that Cg1 prolongs the juvenile-vegetative phase and suggest that heterochrony may be among the factors responsible for disease and insect resistance in normal populations of maize
doi_str_mv	10.1093/oxfordjournals.jhered.a022988
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We evaluated resistance to common rust (Puccinia sorghi Schw.) and European corn borer (Ostrinia nubilalis Hubner) in Cg1 and wild-type segregating families in order to test the hypothesis that Cg1 is a heterochronic mutation that extends the juvenile-vegetative phase. In backgrounds with high expression, Cg1 mid-whorl leaves had similar resistance as Cg1 and wild-type seedling leaves, whereas wild-type mid-whorl leaves differed in resistance from the other three leaf types. In the Mo17 background, which has reduced Cg1 expression, Cg1 mid-whorl leaves had resistance levels intermediate between wild-type seedling and mid-whorl levels. 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(University of Wisconsin-Madison, Madison, WI.) ; Tracy, W.F</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-f261t-31d8444e00c2d055383811837e9d0fdbd5a3072c5f480e85a8f8ff670715d30b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><topic>Corn</topic><topic>DOSAGE BIOLOGIQUE</topic><topic>ENSAYO BIOLOGICO</topic><topic>ETAPAS DE DESARROLLO DE LA PLANTA</topic><topic>FEUILLE</topic><topic>Flowers & plants</topic><topic>GENETICA</topic><topic>Genetics</topic><topic>GENETIQUE</topic><topic>HOJAS</topic><topic>INFECCION</topic><topic>INFECTION</topic><topic>Lepidoptera</topic><topic>MUTACION</topic><topic>MUTATION</topic><topic>OSTRINIA NUBILALIS</topic><topic>PUCCINIA SORGHI</topic><topic>RESISTANCE AUX MALADIES</topic><topic>RESISTANCE AUX ORGANISMES NUISIBLES</topic><topic>RESISTENCIA A LA ENFERMEDAD</topic><topic>RESISTENCIA A LAS PLAGAS</topic><topic>ROUILLE</topic><topic>ROYA</topic><topic>STADE DE DEVELOPPEMENT VEGETAL</topic><topic>Tortricidae</topic><topic>ZEA MAYS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Abedon, B.G. 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(University of Wisconsin-Madison, Madison, WI.)</au><au>Tracy, W.F</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Corngrass1 of maize (Zea mays L.) delays development of adult plant resistance to common rust (Puccinia sorghi Schw.) and European corn borer (Ostrinia nubilalis Hubner)</atitle><jtitle>The Journal of heredity</jtitle><date>1996-05-01</date><risdate>1996</risdate><volume>87</volume><issue>3</issue><spage>219</spage><epage>223</epage><pages>219-223</pages><issn>0022-1503</issn><eissn>1465-7333</eissn><eissn>1471-8505</eissn><coden>JOHEA8</coden><abstract>Based on morphological evidence, researchers have proposed that Corngrass1 (Cg1) of maize (Zea mays L.) is a heterochronic mutation that prolongs the juvenile- vegetative phase because distal tissues display juvenile traits that normally occur only basally. Physiological or biochemical evidence in support of this hypothesis is lacking. Disease and insect resistance often depends on physiological, biochemical, and morphological factors and can vary during ontogeny. We evaluated resistance to common rust (Puccinia sorghi Schw.) and European corn borer (Ostrinia nubilalis Hubner) in Cg1 and wild-type segregating families in order to test the hypothesis that Cg1 is a heterochronic mutation that extends the juvenile-vegetative phase. In backgrounds with high expression, Cg1 mid-whorl leaves had similar resistance as Cg1 and wild-type seedling leaves, whereas wild-type mid-whorl leaves differed in resistance from the other three leaf types. In the Mo17 background, which has reduced Cg1 expression, Cg1 mid-whorl leaves had resistance levels intermediate between wild-type seedling and mid-whorl levels. These results support the hypothesis that Cg1 prolongs the juvenile-vegetative phase and suggest that heterochrony may be among the factors responsible for disease and insect resistance in normal populations of maize</abstract><cop>Oxford</cop><pub>Oxford Publishing Limited (England)</pub><doi>10.1093/oxfordjournals.jhered.a022988</doi><tpages>5</tpages></addata></record>
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subjects	Corn DOSAGE BIOLOGIQUE ENSAYO BIOLOGICO ETAPAS DE DESARROLLO DE LA PLANTA FEUILLE Flowers & plants GENETICA Genetics GENETIQUE HOJAS INFECCION INFECTION Lepidoptera MUTACION MUTATION OSTRINIA NUBILALIS PUCCINIA SORGHI RESISTANCE AUX MALADIES RESISTANCE AUX ORGANISMES NUISIBLES RESISTENCIA A LA ENFERMEDAD RESISTENCIA A LAS PLAGAS ROUILLE ROYA STADE DE DEVELOPPEMENT VEGETAL Tortricidae ZEA MAYS
title	Corngrass1 of maize (Zea mays L.) delays development of adult plant resistance to common rust (Puccinia sorghi Schw.) and European corn borer (Ostrinia nubilalis Hubner)
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