OrangerV1, PascalFrancis, Corpus, bibRecord, 000656

Citrus viroids: Symptom expression and effect on vegetative growth and yield of clementine trees grafted on trifoliate orange

Identifieur interne : 000656 ( PascalFrancis/Corpus ); précédent : 000655; suivant : 000657

Citrus viroids: Symptom expression and effect on vegetative growth and yield of clementine trees grafted on trifoliate orange

Auteurs : C. Verniere ; X. Perrier ; C. Dubois ; A. Dubois ; L. Botella ; C. Chabrier ; J. M. Bove ; N. Duran Vila

Source :

Plant disease [ 0191-2917 ] ; 2004.

RBID : Pascal:04-0585611

Descripteurs français

Pascal (Inist)
- Citrus sinensis, Viroïde, Poncirus trifoliata, Rendement, Greffe, Microbiologie, Phytopathologie, Phytopathogène, Plante.

English descriptors

KwdEn :
- Citrus sinensis, Graft, Microbiology, Plant, Plant pathogen, Plant pathology, Poncirus trifoliata, Viroid, Yield.

Abstract

Citrus are natural hosts of five viroid species: Citrus exocortis viroid (CEVd), Citrus bent leaf viroid (CBLVd), Hop stunt viroid (HSVd), Citrus viroid III (CVd-III), and Citrus viroid IV (CVd-IV). CEVd and specific sequence variants of HSVd are the causal agents of the well-known diseases of citrus, exocortis and cachexia. Other viroids have been found to induce different degrees of stunting. Since commercial citrus trees are commonly infected with mixtures of these viroids, only limited information is available on their effect in species other than Etrog citron. A field assay was conducted to establish the effect of each viroid on Commune clementine trees grafted on Pomeroy trifoliate orange. Infected trees were periodically monitored over a 12-year period (1990 to 2002) for symptom expression, growth, and fruit yield. Only CEVd caused bark scaling on the trifoliate orange rootstock and marked dwarfing, both characteristic of exocortis disease as initially described. In addition, very conspicuous bumps were observed in the wood of the rootstock after removing the bark. Only those HSVd variants, previously characterized as pathogenic in several cachexia-sensitive species, induced pits and gum deposits characteristic of this disease in the clementine scion. Bark cracking symptoms on the trifoliate orange rootstock were also observed. They were associated with CVd-IV, HSVd, or CEVd infection, but in the latter, they were only clearly observed in trees that showed mild scaling. Other abnormalities (deep pits, crests, and gummy pits) were not associated with viroid infection. No specific symptoms resulted from infection with CBLVd and CVd-III. HSVd, CVd-IV, and CBLVd had little or no effect in growth and yield, whereas CEVd and CVd-III caused a significant reduction of growth and yield, which became more pronounced over time with CEVd infection. Yield reduction was associated mainly with loss of production of large fruits. In general, there was a good correlation between reduction in vegetative growth and yield.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A02	`01`			`@0 PLDIDE`
A03		`1`		`@0 Plant dis.`
A05				`@2 88`
A06				`@2 11`
A08	`01`	`1`	`ENG`	`@1 Citrus viroids: Symptom expression and effect on vegetative growth and yield of clementine trees grafted on trifoliate orange`
A11	`01`	`1`		`@1 VERNIERE (C.)`
A11	`02`	`1`		`@1 PERRIER (X.)`
A11	`03`	`1`		`@1 DUBOIS (C.)`
A11	`04`	`1`		`@1 DUBOIS (A.)`
A11	`05`	`1`		`@1 BOTELLA (L.)`
A11	`06`	`1`		`@1 CHABRIER (C.)`
A11	`07`	`1`		`@1 BOVE (J. M.)`
A11	`08`	`1`		`@1 DURAN VILA (N.)`
A14	`01`			`@1 Station de Recherches Agronomiques INRA-CIRAD @2 20230 San Giuliano, Corsica @3 FRA @Z 1 aut. @Z 4 aut. @Z 5 aut.`
A14	`02`			`@1 Centre International de Recherche pour le Développement, CIRAD-FLHOR, TA50 / PS4 @2 34398 Montpellier @3 FRA @Z 2 aut. @Z 3 aut.`
A14	`03`			`@1 CIRAD-FLHOR, BP153 @2 97202 Fort-de France @3 MTQ @Z 6 aut.`
A14	`04`			`@1 Institut National de la Recherche Agronomique and Université de Bordeaux 2, IBVM, Laboratoire de Biologie Cellulaire et Moléculaire, BP 81 @2 33883 Villenave d'Ornon @3 FRA @Z 7 aut.`
A14	`05`			`@1 Departamento de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigationes Agrarias, Apartado Oficial @2 46113-Moncada, Valencia @3 ESP @Z 8 aut.`
A20				`@1 1189-1197`
A21				`@1 2004`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 12673 @5 354000122434330030`
A44				`@0 0000 @1 © 2004 INIST-CNRS. All rights reserved.`
A45				`@0 45 ref.`
A47	`01`	`1`		`@0 04-0585611`
A60				`@1 P`
A61				`@0 A`
A64	`01`	`1`		`@0 Plant disease`
A66	`01`			`@0 USA`
C01	`01`		`ENG`	@0 Citrus are natural hosts of five viroid species: Citrus exocortis viroid (CEVd), Citrus bent leaf viroid (CBLVd), Hop stunt viroid (HSVd), Citrus viroid III (CVd-III), and Citrus viroid IV (CVd-IV). CEVd and specific sequence variants of HSVd are the causal agents of the well-known diseases of citrus, exocortis and cachexia. Other viroids have been found to induce different degrees of stunting. Since commercial citrus trees are commonly infected with mixtures of these viroids, only limited information is available on their effect in species other than Etrog citron. A field assay was conducted to establish the effect of each viroid on Commune clementine trees grafted on Pomeroy trifoliate orange. Infected trees were periodically monitored over a 12-year period (1990 to 2002) for symptom expression, growth, and fruit yield. Only CEVd caused bark scaling on the trifoliate orange rootstock and marked dwarfing, both characteristic of exocortis disease as initially described. In addition, very conspicuous bumps were observed in the wood of the rootstock after removing the bark. Only those HSVd variants, previously characterized as pathogenic in several cachexia-sensitive species, induced pits and gum deposits characteristic of this disease in the clementine scion. Bark cracking symptoms on the trifoliate orange rootstock were also observed. They were associated with CVd-IV, HSVd, or CEVd infection, but in the latter, they were only clearly observed in trees that showed mild scaling. Other abnormalities (deep pits, crests, and gummy pits) were not associated with viroid infection. No specific symptoms resulted from infection with CBLVd and CVd-III. HSVd, CVd-IV, and CBLVd had little or no effect in growth and yield, whereas CEVd and CVd-III caused a significant reduction of growth and yield, which became more pronounced over time with CEVd infection. Yield reduction was associated mainly with loss of production of large fruits. In general, there was a good correlation between reduction in vegetative growth and yield.
C02	`01`	`X`		`@0 002A34E`
C03	`01`	`X`	`FRE`	`@0 Citrus sinensis @2 NS @5 01`
C03	`01`	`X`	`ENG`	`@0 Citrus sinensis @2 NS @5 01`
C03	`01`	`X`	`SPA`	`@0 Citrus sinensis @2 NS @5 01`
C03	`02`	`X`	`FRE`	`@0 Viroïde @2 NW @5 02`
C03	`02`	`X`	`ENG`	`@0 Viroid @2 NW @5 02`
C03	`02`	`X`	`SPA`	`@0 Viroide @2 NW @5 02`
C03	`03`	`X`	`FRE`	`@0 Poncirus trifoliata @2 NS @5 03`
C03	`03`	`X`	`ENG`	`@0 Poncirus trifoliata @2 NS @5 03`
C03	`03`	`X`	`SPA`	`@0 Poncirus trifoliata @2 NS @5 03`
C03	`04`	`X`	`FRE`	`@0 Rendement @5 05`
C03	`04`	`X`	`ENG`	`@0 Yield @5 05`
C03	`04`	`X`	`SPA`	`@0 Rendimiento @5 05`
C03	`05`	`X`	`FRE`	`@0 Greffe @5 06`
C03	`05`	`X`	`ENG`	`@0 Graft @5 06`
C03	`05`	`X`	`SPA`	`@0 Injerto @5 06`
C03	`06`	`X`	`FRE`	`@0 Microbiologie @5 07`
C03	`06`	`X`	`ENG`	`@0 Microbiology @5 07`
C03	`06`	`X`	`SPA`	`@0 Microbiología @5 07`
C03	`07`	`X`	`FRE`	`@0 Phytopathologie @5 08`
C03	`07`	`X`	`ENG`	`@0 Plant pathology @5 08`
C03	`07`	`X`	`SPA`	`@0 Fitopatología @5 08`
C03	`08`	`X`	`FRE`	`@0 Phytopathogène @5 09`
C03	`08`	`X`	`ENG`	`@0 Plant pathogen @5 09`
C03	`08`	`X`	`SPA`	`@0 Fitopatógeno @5 09`
C03	`09`	`X`	`FRE`	`@0 Plante @5 45`
C03	`09`	`X`	`ENG`	`@0 Plant @5 45`
C03	`09`	`X`	`SPA`	`@0 Planta @5 45`
C07	`01`	`X`	`FRE`	`@0 Rutaceae @2 NS`
C07	`01`	`X`	`ENG`	`@0 Rutaceae @2 NS`
C07	`01`	`X`	`SPA`	`@0 Rutaceae @2 NS`
C07	`02`	`X`	`FRE`	`@0 Dicotyledones @2 NS`
C07	`02`	`X`	`ENG`	`@0 Dicotyledones @2 NS`
C07	`02`	`X`	`SPA`	`@0 Dicotyledones @2 NS`
C07	`03`	`X`	`FRE`	`@0 Angiospermae @2 NS`
C07	`03`	`X`	`ENG`	`@0 Angiospermae @2 NS`
C07	`03`	`X`	`SPA`	`@0 Angiospermae @2 NS`
C07	`04`	`X`	`FRE`	`@0 Spermatophyta @2 NS`
C07	`04`	`X`	`ENG`	`@0 Spermatophyta @2 NS`
C07	`04`	`X`	`SPA`	`@0 Spermatophyta @2 NS`
C07	`05`	`X`	`FRE`	`@0 Virus @2 NW`
C07	`05`	`X`	`ENG`	`@0 Virus @2 NW`
C07	`05`	`X`	`SPA`	`@0 Virus @2 NW`
N21				`@1 334`
N44	`01`			`@1 OTO`
N82				`@1 OTO`

Format Inist (serveur)

NO :	PASCAL 04-0585611 INIST
ET :	Citrus viroids: Symptom expression and effect on vegetative growth and yield of clementine trees grafted on trifoliate orange
AU :	VERNIERE (C.); PERRIER (X.); DUBOIS (C.); DUBOIS (A.); BOTELLA (L.); CHABRIER (C.); BOVE (J. M.); DURAN VILA (N.)
AF :	Station de Recherches Agronomiques INRA-CIRAD/20230 San Giuliano, Corsica/France (1 aut., 4 aut., 5 aut.); Centre International de Recherche pour le Développement, CIRAD-FLHOR, TA50 / PS4/34398 Montpellier/France (2 aut., 3 aut.); CIRAD-FLHOR, BP153/97202 Fort-de France/Martinique (6 aut.); Institut National de la Recherche Agronomique and Université de Bordeaux 2, IBVM, Laboratoire de Biologie Cellulaire et Moléculaire, BP 81/33883 Villenave d'Ornon/France (7 aut.); Departamento de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigationes Agrarias, Apartado Oficial/46113-Moncada, Valencia/Espagne (8 aut.)
DT :	Publication en série; Niveau analytique
SO :	Plant disease; ISSN 0191-2917; Coden PLDIDE; Etats-Unis; Da. 2004; Vol. 88; No. 11; Pp. 1189-1197; Bibl. 45 ref.
LA :	Anglais
EA :	Citrus are natural hosts of five viroid species: Citrus exocortis viroid (CEVd), Citrus bent leaf viroid (CBLVd), Hop stunt viroid (HSVd), Citrus viroid III (CVd-III), and Citrus viroid IV (CVd-IV). CEVd and specific sequence variants of HSVd are the causal agents of the well-known diseases of citrus, exocortis and cachexia. Other viroids have been found to induce different degrees of stunting. Since commercial citrus trees are commonly infected with mixtures of these viroids, only limited information is available on their effect in species other than Etrog citron. A field assay was conducted to establish the effect of each viroid on Commune clementine trees grafted on Pomeroy trifoliate orange. Infected trees were periodically monitored over a 12-year period (1990 to 2002) for symptom expression, growth, and fruit yield. Only CEVd caused bark scaling on the trifoliate orange rootstock and marked dwarfing, both characteristic of exocortis disease as initially described. In addition, very conspicuous bumps were observed in the wood of the rootstock after removing the bark. Only those HSVd variants, previously characterized as pathogenic in several cachexia-sensitive species, induced pits and gum deposits characteristic of this disease in the clementine scion. Bark cracking symptoms on the trifoliate orange rootstock were also observed. They were associated with CVd-IV, HSVd, or CEVd infection, but in the latter, they were only clearly observed in trees that showed mild scaling. Other abnormalities (deep pits, crests, and gummy pits) were not associated with viroid infection. No specific symptoms resulted from infection with CBLVd and CVd-III. HSVd, CVd-IV, and CBLVd had little or no effect in growth and yield, whereas CEVd and CVd-III caused a significant reduction of growth and yield, which became more pronounced over time with CEVd infection. Yield reduction was associated mainly with loss of production of large fruits. In general, there was a good correlation between reduction in vegetative growth and yield.
CC :	002A34E
FD :	Citrus sinensis; Viroïde; Poncirus trifoliata; Rendement; Greffe; Microbiologie; Phytopathologie; Phytopathogène; Plante
FG :	Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Virus
ED :	Citrus sinensis; Viroid; Poncirus trifoliata; Yield; Graft; Microbiology; Plant pathology; Plant pathogen; Plant
EG :	Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Virus
SD :	Citrus sinensis; Viroide; Poncirus trifoliata; Rendimiento; Injerto; Microbiología; Fitopatología; Fitopatógeno; Planta
LO :	INIST-12673.354000122434330030
ID :	04-0585611

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Pascal:04-0585611

Le document en format XML

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<front><div type="abstract" xml:lang="en">Citrus are natural hosts of five viroid species: Citrus exocortis viroid (CEVd), Citrus bent leaf viroid (CBLVd), Hop stunt viroid (HSVd), Citrus viroid III (CVd-III), and Citrus viroid IV (CVd-IV). CEVd and specific sequence variants of HSVd are the causal agents of the well-known diseases of citrus, exocortis and cachexia. Other viroids have been found to induce different degrees of stunting. Since commercial citrus trees are commonly infected with mixtures of these viroids, only limited information is available on their effect in species other than Etrog citron. A field assay was conducted to establish the effect of each viroid on Commune clementine trees grafted on Pomeroy trifoliate orange. Infected trees were periodically monitored over a 12-year period (1990 to 2002) for symptom expression, growth, and fruit yield. Only CEVd caused bark scaling on the trifoliate orange rootstock and marked dwarfing, both characteristic of exocortis disease as initially described. In addition, very conspicuous bumps were observed in the wood of the rootstock after removing the bark. Only those HSVd variants, previously characterized as pathogenic in several cachexia-sensitive species, induced pits and gum deposits characteristic of this disease in the clementine scion. Bark cracking symptoms on the trifoliate orange rootstock were also observed. They were associated with CVd-IV, HSVd, or CEVd infection, but in the latter, they were only clearly observed in trees that showed mild scaling. Other abnormalities (deep pits, crests, and gummy pits) were not associated with viroid infection. No specific symptoms resulted from infection with CBLVd and CVd-III. HSVd, CVd-IV, and CBLVd had little or no effect in growth and yield, whereas CEVd and CVd-III caused a significant reduction of growth and yield, which became more pronounced over time with CEVd infection. Yield reduction was associated mainly with loss of production of large fruits. In general, there was a good correlation between reduction in vegetative growth and yield.</div>
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<fA02 i1="01"><s0>PLDIDE</s0>
</fA02>
<fA03 i2="1"><s0>Plant dis.</s0>
</fA03>
<fA05><s2>88</s2>
</fA05>
<fA06><s2>11</s2>
</fA06>
<fA08 i1="01" i2="1" l="ENG"><s1>Citrus viroids: Symptom expression and effect on vegetative growth and yield of clementine trees grafted on trifoliate orange</s1>
</fA08>
<fA11 i1="01" i2="1"><s1>VERNIERE (C.)</s1>
</fA11>
<fA11 i1="02" i2="1"><s1>PERRIER (X.)</s1>
</fA11>
<fA11 i1="03" i2="1"><s1>DUBOIS (C.)</s1>
</fA11>
<fA11 i1="04" i2="1"><s1>DUBOIS (A.)</s1>
</fA11>
<fA11 i1="05" i2="1"><s1>BOTELLA (L.)</s1>
</fA11>
<fA11 i1="06" i2="1"><s1>CHABRIER (C.)</s1>
</fA11>
<fA11 i1="07" i2="1"><s1>BOVE (J. M.)</s1>
</fA11>
<fA11 i1="08" i2="1"><s1>DURAN VILA (N.)</s1>
</fA11>
<fA14 i1="01"><s1>Station de Recherches Agronomiques INRA-CIRAD</s1>
<s2>20230 San Giuliano, Corsica</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</fA14>
<fA14 i1="02"><s1>Centre International de Recherche pour le Développement, CIRAD-FLHOR, TA50 / PS4</s1>
<s2>34398 Montpellier</s2>
<s3>FRA</s3>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
</fA14>
<fA14 i1="03"><s1>CIRAD-FLHOR, BP153</s1>
<s2>97202 Fort-de France</s2>
<s3>MTQ</s3>
<sZ>6 aut.</sZ>
</fA14>
<fA14 i1="04"><s1>Institut National de la Recherche Agronomique and Université de Bordeaux 2, IBVM, Laboratoire de Biologie Cellulaire et Moléculaire, BP 81</s1>
<s2>33883 Villenave d'Ornon</s2>
<s3>FRA</s3>
<sZ>7 aut.</sZ>
</fA14>
<fA14 i1="05"><s1>Departamento de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigationes Agrarias, Apartado Oficial</s1>
<s2>46113-Moncada, Valencia</s2>
<s3>ESP</s3>
<sZ>8 aut.</sZ>
</fA14>
<fA20><s1>1189-1197</s1>
</fA20>
<fA21><s1>2004</s1>
</fA21>
<fA23 i1="01"><s0>ENG</s0>
</fA23>
<fA43 i1="01"><s1>INIST</s1>
<s2>12673</s2>
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<fA44><s0>0000</s0>
<s1>© 2004 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45><s0>45 ref.</s0>
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<fA60><s1>P</s1>
</fA60>
<fA61><s0>A</s0>
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<fA66 i1="01"><s0>USA</s0>
</fA66>
<fC01 i1="01" l="ENG"><s0>Citrus are natural hosts of five viroid species: Citrus exocortis viroid (CEVd), Citrus bent leaf viroid (CBLVd), Hop stunt viroid (HSVd), Citrus viroid III (CVd-III), and Citrus viroid IV (CVd-IV). CEVd and specific sequence variants of HSVd are the causal agents of the well-known diseases of citrus, exocortis and cachexia. Other viroids have been found to induce different degrees of stunting. Since commercial citrus trees are commonly infected with mixtures of these viroids, only limited information is available on their effect in species other than Etrog citron. A field assay was conducted to establish the effect of each viroid on Commune clementine trees grafted on Pomeroy trifoliate orange. Infected trees were periodically monitored over a 12-year period (1990 to 2002) for symptom expression, growth, and fruit yield. Only CEVd caused bark scaling on the trifoliate orange rootstock and marked dwarfing, both characteristic of exocortis disease as initially described. In addition, very conspicuous bumps were observed in the wood of the rootstock after removing the bark. Only those HSVd variants, previously characterized as pathogenic in several cachexia-sensitive species, induced pits and gum deposits characteristic of this disease in the clementine scion. Bark cracking symptoms on the trifoliate orange rootstock were also observed. They were associated with CVd-IV, HSVd, or CEVd infection, but in the latter, they were only clearly observed in trees that showed mild scaling. Other abnormalities (deep pits, crests, and gummy pits) were not associated with viroid infection. No specific symptoms resulted from infection with CBLVd and CVd-III. HSVd, CVd-IV, and CBLVd had little or no effect in growth and yield, whereas CEVd and CVd-III caused a significant reduction of growth and yield, which became more pronounced over time with CEVd infection. Yield reduction was associated mainly with loss of production of large fruits. In general, there was a good correlation between reduction in vegetative growth and yield.</s0>
</fC01>
<fC02 i1="01" i2="X"><s0>002A34E</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Citrus sinensis</s0>
<s2>NS</s2>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG"><s0>Citrus sinensis</s0>
<s2>NS</s2>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Citrus sinensis</s0>
<s2>NS</s2>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Viroïde</s0>
<s2>NW</s2>
<s5>02</s5>
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<fC03 i1="02" i2="X" l="ENG"><s0>Viroid</s0>
<s2>NW</s2>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Viroide</s0>
<s2>NW</s2>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Poncirus trifoliata</s0>
<s2>NS</s2>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Poncirus trifoliata</s0>
<s2>NS</s2>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Poncirus trifoliata</s0>
<s2>NS</s2>
<s5>03</s5>
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<fC03 i1="04" i2="X" l="FRE"><s0>Rendement</s0>
<s5>05</s5>
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<fC03 i1="04" i2="X" l="ENG"><s0>Yield</s0>
<s5>05</s5>
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<fC03 i1="04" i2="X" l="SPA"><s0>Rendimiento</s0>
<s5>05</s5>
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<fC03 i1="05" i2="X" l="FRE"><s0>Greffe</s0>
<s5>06</s5>
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<fC03 i1="05" i2="X" l="ENG"><s0>Graft</s0>
<s5>06</s5>
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<s5>06</s5>
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<fC03 i1="06" i2="X" l="FRE"><s0>Microbiologie</s0>
<s5>07</s5>
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<s5>07</s5>
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<s5>07</s5>
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<fC03 i1="07" i2="X" l="FRE"><s0>Phytopathologie</s0>
<s5>08</s5>
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<fC03 i1="07" i2="X" l="ENG"><s0>Plant pathology</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Fitopatología</s0>
<s5>08</s5>
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<s5>09</s5>
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<s5>09</s5>
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<s5>09</s5>
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<fC03 i1="09" i2="X" l="FRE"><s0>Plante</s0>
<s5>45</s5>
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<fC03 i1="09" i2="X" l="ENG"><s0>Plant</s0>
<s5>45</s5>
</fC03>
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<s5>45</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Rutaceae</s0>
<s2>NS</s2>
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<fC07 i1="01" i2="X" l="ENG"><s0>Rutaceae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Rutaceae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Dicotyledones</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Dicotyledones</s0>
<s2>NS</s2>
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<fC07 i1="02" i2="X" l="SPA"><s0>Dicotyledones</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Angiospermae</s0>
<s2>NS</s2>
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<fC07 i1="03" i2="X" l="ENG"><s0>Angiospermae</s0>
<s2>NS</s2>
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<fC07 i1="03" i2="X" l="SPA"><s0>Angiospermae</s0>
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<s2>NS</s2>
</fC07>
<fC07 i1="04" i2="X" l="ENG"><s0>Spermatophyta</s0>
<s2>NS</s2>
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<s2>NS</s2>
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<s2>NW</s2>
</fC07>
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<s2>NW</s2>
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<fC07 i1="05" i2="X" l="SPA"><s0>Virus</s0>
<s2>NW</s2>
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<server><NO>PASCAL 04-0585611 INIST</NO>
<ET>Citrus viroids: Symptom expression and effect on vegetative growth and yield of clementine trees grafted on trifoliate orange</ET>
<AU>VERNIERE (C.); PERRIER (X.); DUBOIS (C.); DUBOIS (A.); BOTELLA (L.); CHABRIER (C.); BOVE (J. M.); DURAN VILA (N.)</AU>
<AF>Station de Recherches Agronomiques INRA-CIRAD/20230 San Giuliano, Corsica/France (1 aut., 4 aut., 5 aut.); Centre International de Recherche pour le Développement, CIRAD-FLHOR, TA50 / PS4/34398 Montpellier/France (2 aut., 3 aut.); CIRAD-FLHOR, BP153/97202 Fort-de France/Martinique (6 aut.); Institut National de la Recherche Agronomique and Université de Bordeaux 2, IBVM, Laboratoire de Biologie Cellulaire et Moléculaire, BP 81/33883 Villenave d'Ornon/France (7 aut.); Departamento de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigationes Agrarias, Apartado Oficial/46113-Moncada, Valencia/Espagne (8 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Plant disease; ISSN 0191-2917; Coden PLDIDE; Etats-Unis; Da. 2004; Vol. 88; No. 11; Pp. 1189-1197; Bibl. 45 ref.</SO>
<LA>Anglais</LA>
<EA>Citrus are natural hosts of five viroid species: Citrus exocortis viroid (CEVd), Citrus bent leaf viroid (CBLVd), Hop stunt viroid (HSVd), Citrus viroid III (CVd-III), and Citrus viroid IV (CVd-IV). CEVd and specific sequence variants of HSVd are the causal agents of the well-known diseases of citrus, exocortis and cachexia. Other viroids have been found to induce different degrees of stunting. Since commercial citrus trees are commonly infected with mixtures of these viroids, only limited information is available on their effect in species other than Etrog citron. A field assay was conducted to establish the effect of each viroid on Commune clementine trees grafted on Pomeroy trifoliate orange. Infected trees were periodically monitored over a 12-year period (1990 to 2002) for symptom expression, growth, and fruit yield. Only CEVd caused bark scaling on the trifoliate orange rootstock and marked dwarfing, both characteristic of exocortis disease as initially described. In addition, very conspicuous bumps were observed in the wood of the rootstock after removing the bark. Only those HSVd variants, previously characterized as pathogenic in several cachexia-sensitive species, induced pits and gum deposits characteristic of this disease in the clementine scion. Bark cracking symptoms on the trifoliate orange rootstock were also observed. They were associated with CVd-IV, HSVd, or CEVd infection, but in the latter, they were only clearly observed in trees that showed mild scaling. Other abnormalities (deep pits, crests, and gummy pits) were not associated with viroid infection. No specific symptoms resulted from infection with CBLVd and CVd-III. HSVd, CVd-IV, and CBLVd had little or no effect in growth and yield, whereas CEVd and CVd-III caused a significant reduction of growth and yield, which became more pronounced over time with CEVd infection. Yield reduction was associated mainly with loss of production of large fruits. In general, there was a good correlation between reduction in vegetative growth and yield.</EA>
<CC>002A34E</CC>
<FD>Citrus sinensis; Viroïde; Poncirus trifoliata; Rendement; Greffe; Microbiologie; Phytopathologie; Phytopathogène; Plante</FD>
<FG>Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Virus</FG>
<ED>Citrus sinensis; Viroid; Poncirus trifoliata; Yield; Graft; Microbiology; Plant pathology; Plant pathogen; Plant</ED>
<EG>Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Virus</EG>
<SD>Citrus sinensis; Viroide; Poncirus trifoliata; Rendimiento; Injerto; Microbiología; Fitopatología; Fitopatógeno; Planta</SD>
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Citrus viroids: Symptom expression and effect on vegetative growth and yield of clementine trees grafted on trifoliate orange

Citrus viroids: Symptom expression and effect on vegetative growth and yield of clementine trees grafted on trifoliate orange

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