Occurrence of Fusarium-produced naphthazarins in citrus trees and sensitivity of rootstocks to isomarticin in relation to citrus blight
Identifieur interne : 000888 ( PascalFrancis/Corpus ); précédent : 000887; suivant : 000889Occurrence of Fusarium-produced naphthazarins in citrus trees and sensitivity of rootstocks to isomarticin in relation to citrus blight
Auteurs : J. C. Janse Van Rensburg ; N. Labuschagne ; S. NemecSource :
- Plant pathology [ 0032-0862 ] ; 2001.
Descripteurs français
- Pascal (Inist)
- Maladie présumée infectieuse, Mycose, Concentration chimique, Déficit, Etiopathogénie, Phytotoxicité, Tolérance, Trouble nutrition, Xylème, Porte greffe, Citrus, Fusarium solani, Poncirus, Phytotoxine, Zinc, Etude expérimentale, Etude en serre, Culture hydroponique, Etude sur terrain, République Sud Africaine, Citrus jambhiri, Citrus limonia, Citrus paradisi Poncirus trifoliata, Citrus reticulata, Citrus sinensis, Citrus sinensis Poncirus trifoliata, Isomarticine, Naphthazarine, Dépérissement agrume.
English descriptors
Abstract
Fusarium solani, the causal fungus of root and crown rot of citrus, produces naphthazarin toxins that were shown to be toxic to citrus plants. It was found that citrus trees in South Africa had varying levels of naphthazarins in their xylem. Significantly higher concentrations of these toxins were detected in trees with blight symptoms than in symptomless trees. Citrus seedlings grown in hydroponic culture containing isomarticin showed inhibition of growth, shortening of roots and accumulation of zinc in the trunk wood. Zinc deficiency symptoms were also observed on certain rootstocks. A procedural ranking of rootstocks indicated that trees with observed tolerance to blight in the field generally had higher tolerance to isomarticin in hydroponic culture, whereas trees susceptible to blight were more sensitive to the toxin. These findings indicate that Fusarium-produced isomarticin is involved in the induction of some of the symptoms associated with citrus blight syndrome.
Notice en format standard (ISO 2709)
Pour connaître la documentation sur le format Inist Standard.
pA |
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Format Inist (serveur)
NO : | PASCAL 01-0328759 INIST |
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ET : | Occurrence of Fusarium-produced naphthazarins in citrus trees and sensitivity of rootstocks to isomarticin in relation to citrus blight |
AU : | JANSE VAN RENSBURG (J. C.); LABUSCHAGNE (N.); NEMEC (S.) |
AF : | Agricultural Research Council, Plant Protection Research Institute, Private Bag X5017/Stellenbosch, 7599/Afrique du Sud (1 aut.); Department of Microbiology and Plant Pathology, Faculty of Biological and Agricultural Sciences, University of Pretoria/Pretoria, 0002/Afrique du Sud (2 aut.); Science and Technology Department, Valencia Community College, 1800 S Kirkman Road/Orlando, FL/Etats-Unis (3 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Plant pathology; ISSN 0032-0862; Coden PLPAAD; Royaume-Uni; Da. 2001; Vol. 50; No. 2; Pp. 258-265; Bibl. 30 ref. |
LA : | Anglais |
EA : | Fusarium solani, the causal fungus of root and crown rot of citrus, produces naphthazarin toxins that were shown to be toxic to citrus plants. It was found that citrus trees in South Africa had varying levels of naphthazarins in their xylem. Significantly higher concentrations of these toxins were detected in trees with blight symptoms than in symptomless trees. Citrus seedlings grown in hydroponic culture containing isomarticin showed inhibition of growth, shortening of roots and accumulation of zinc in the trunk wood. Zinc deficiency symptoms were also observed on certain rootstocks. A procedural ranking of rootstocks indicated that trees with observed tolerance to blight in the field generally had higher tolerance to isomarticin in hydroponic culture, whereas trees susceptible to blight were more sensitive to the toxin. These findings indicate that Fusarium-produced isomarticin is involved in the induction of some of the symptoms associated with citrus blight syndrome. |
CC : | 002A34G04 |
FD : | Maladie présumée infectieuse; Mycose; Concentration chimique; Déficit; Etiopathogénie; Phytotoxicité; Tolérance; Trouble nutrition; Xylème; Porte greffe; Citrus; Fusarium solani; Poncirus; Phytotoxine; Zinc; Etude expérimentale; Etude en serre; Culture hydroponique; Etude sur terrain; République Sud Africaine; Citrus jambhiri; Citrus limonia; Citrus paradisi Poncirus trifoliata; Citrus reticulata; Citrus sinensis; Citrus sinensis Poncirus trifoliata; Isomarticine; Naphthazarine; Dépérissement agrume |
FG : | Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Fungi Imperfecti; Fungi; Thallophyta; Afrique; Arboriculture; Biochimie; Mycologie; Tissu conducteur; Agrume; Arbre fruitier; Culture tropicale; Phytopathogène; Composé biologique; Composé aromatique; Hétérocycle azote; Hétérocycle oxygène; Naphtoquinone dérivé; Quinone; Elément minéral; Oligoélément; Benzoisoquinoléine; Benzo[g]isoquinoléine-5,10- dione dérivé; Naphtopyrane; Naphto[2,3-c]pyrane-5,10-dione dérivé |
ED : | Tolerance; Rootstock; Citrus; Fusarium solani; South Africa(Republic); citrus blight |
EG : | Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Fungi Imperfecti; Fungi; Thallophyta; Africa; Citrus fruit; Fruit tree; Tropical crop; Plant pathogen; Biological compound |
SD : | Tolerancia; Portainjerto; Citrus; Fusarium solani; República de Sudáfrica |
LO : | INIST-7414.354000095147540140 |
ID : | 01-0328759 |
Links to Exploration step
Pascal:01-0328759Le document en format XML
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<author><name sortKey="Janse Van Rensburg, J C" sort="Janse Van Rensburg, J C" uniqKey="Janse Van Rensburg J" first="J. C." last="Janse Van Rensburg">J. C. Janse Van Rensburg</name>
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<author><name sortKey="Labuschagne, N" sort="Labuschagne, N" uniqKey="Labuschagne N" first="N." last="Labuschagne">N. Labuschagne</name>
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<author><name sortKey="Nemec, S" sort="Nemec, S" uniqKey="Nemec S" first="S." last="Nemec">S. Nemec</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Occurrence of Fusarium-produced naphthazarins in citrus trees and sensitivity of rootstocks to isomarticin in relation to citrus blight</title>
<author><name sortKey="Janse Van Rensburg, J C" sort="Janse Van Rensburg, J C" uniqKey="Janse Van Rensburg J" first="J. C." last="Janse Van Rensburg">J. C. Janse Van Rensburg</name>
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<author><name sortKey="Labuschagne, N" sort="Labuschagne, N" uniqKey="Labuschagne N" first="N." last="Labuschagne">N. Labuschagne</name>
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<author><name sortKey="Nemec, S" sort="Nemec, S" uniqKey="Nemec S" first="S." last="Nemec">S. Nemec</name>
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<imprint><date when="2001">2001</date>
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</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Citrus</term>
<term>Fusarium solani</term>
<term>Rootstock</term>
<term>South Africa(Republic)</term>
<term>Tolerance</term>
<term>citrus blight</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Maladie présumée infectieuse</term>
<term>Mycose</term>
<term>Concentration chimique</term>
<term>Déficit</term>
<term>Etiopathogénie</term>
<term>Phytotoxicité</term>
<term>Tolérance</term>
<term>Trouble nutrition</term>
<term>Xylème</term>
<term>Porte greffe</term>
<term>Citrus</term>
<term>Fusarium solani</term>
<term>Poncirus</term>
<term>Phytotoxine</term>
<term>Zinc</term>
<term>Etude expérimentale</term>
<term>Etude en serre</term>
<term>Culture hydroponique</term>
<term>Etude sur terrain</term>
<term>République Sud Africaine</term>
<term>Citrus jambhiri</term>
<term>Citrus limonia</term>
<term>Citrus paradisi Poncirus trifoliata</term>
<term>Citrus reticulata</term>
<term>Citrus sinensis</term>
<term>Citrus sinensis Poncirus trifoliata</term>
<term>Isomarticine</term>
<term>Naphthazarine</term>
<term>Dépérissement agrume</term>
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<front><div type="abstract" xml:lang="en">Fusarium solani, the causal fungus of root and crown rot of citrus, produces naphthazarin toxins that were shown to be toxic to citrus plants. It was found that citrus trees in South Africa had varying levels of naphthazarins in their xylem. Significantly higher concentrations of these toxins were detected in trees with blight symptoms than in symptomless trees. Citrus seedlings grown in hydroponic culture containing isomarticin showed inhibition of growth, shortening of roots and accumulation of zinc in the trunk wood. Zinc deficiency symptoms were also observed on certain rootstocks. A procedural ranking of rootstocks indicated that trees with observed tolerance to blight in the field generally had higher tolerance to isomarticin in hydroponic culture, whereas trees susceptible to blight were more sensitive to the toxin. These findings indicate that Fusarium-produced isomarticin is involved in the induction of some of the symptoms associated with citrus blight syndrome.</div>
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<sZ>2 aut.</sZ>
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<fA14 i1="03"><s1>Science and Technology Department, Valencia Community College, 1800 S Kirkman Road</s1>
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<fC01 i1="01" l="ENG"><s0>Fusarium solani, the causal fungus of root and crown rot of citrus, produces naphthazarin toxins that were shown to be toxic to citrus plants. It was found that citrus trees in South Africa had varying levels of naphthazarins in their xylem. Significantly higher concentrations of these toxins were detected in trees with blight symptoms than in symptomless trees. Citrus seedlings grown in hydroponic culture containing isomarticin showed inhibition of growth, shortening of roots and accumulation of zinc in the trunk wood. Zinc deficiency symptoms were also observed on certain rootstocks. A procedural ranking of rootstocks indicated that trees with observed tolerance to blight in the field generally had higher tolerance to isomarticin in hydroponic culture, whereas trees susceptible to blight were more sensitive to the toxin. These findings indicate that Fusarium-produced isomarticin is involved in the induction of some of the symptoms associated with citrus blight syndrome.</s0>
</fC01>
<fC02 i1="01" i2="X"><s0>002A34G04</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Maladie présumée infectieuse</s0>
<s4>INC</s4>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Mycose</s0>
<s4>INC</s4>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Concentration chimique</s0>
<s4>INC</s4>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Déficit</s0>
<s4>INC</s4>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Etiopathogénie</s0>
<s4>INC</s4>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Phytotoxicité</s0>
<s4>INC</s4>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Tolérance</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Tolerance</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Tolerancia</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Trouble nutrition</s0>
<s4>INC</s4>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Xylème</s0>
<s4>INC</s4>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Porte greffe</s0>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Rootstock</s0>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Portainjerto</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE"><s0>Citrus</s0>
<s2>NS</s2>
<s5>12</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>Citrus</s0>
<s2>NS</s2>
<s5>12</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>Citrus</s0>
<s2>NS</s2>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Fusarium solani</s0>
<s2>NS</s2>
<s5>13</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Fusarium solani</s0>
<s2>NS</s2>
<s5>13</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Fusarium solani</s0>
<s2>NS</s2>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE"><s0>Poncirus</s0>
<s4>INC</s4>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Phytotoxine</s0>
<s4>INC</s4>
<s5>16</s5>
</fC03>
<fC03 i1="15" i2="X" l="FRE"><s0>Zinc</s0>
<s4>INC</s4>
<s5>17</s5>
</fC03>
<fC03 i1="16" i2="X" l="FRE"><s0>Etude expérimentale</s0>
<s4>INC</s4>
<s5>27</s5>
</fC03>
<fC03 i1="17" i2="X" l="FRE"><s0>Etude en serre</s0>
<s4>INC</s4>
<s5>28</s5>
</fC03>
<fC03 i1="18" i2="X" l="FRE"><s0>Culture hydroponique</s0>
<s4>INC</s4>
<s5>29</s5>
</fC03>
<fC03 i1="19" i2="X" l="FRE"><s0>Etude sur terrain</s0>
<s4>INC</s4>
<s5>30</s5>
</fC03>
<fC03 i1="20" i2="X" l="FRE"><s0>République Sud Africaine</s0>
<s2>NG</s2>
<s5>32</s5>
</fC03>
<fC03 i1="20" i2="X" l="ENG"><s0>South Africa(Republic)</s0>
<s2>NG</s2>
<s5>32</s5>
</fC03>
<fC03 i1="20" i2="X" l="SPA"><s0>República de Sudáfrica</s0>
<s2>NG</s2>
<s5>32</s5>
</fC03>
<fC03 i1="21" i2="X" l="FRE"><s0>Citrus jambhiri</s0>
<s2>NS</s2>
<s4>INC</s4>
<s5>68</s5>
</fC03>
<fC03 i1="22" i2="X" l="FRE"><s0>Citrus limonia</s0>
<s2>NS</s2>
<s4>INC</s4>
<s5>69</s5>
</fC03>
<fC03 i1="23" i2="X" l="FRE"><s0>Citrus paradisi Poncirus trifoliata</s0>
<s2>NS</s2>
<s4>INC</s4>
<s5>70</s5>
</fC03>
<fC03 i1="24" i2="X" l="FRE"><s0>Citrus reticulata</s0>
<s2>NS</s2>
<s4>INC</s4>
<s5>71</s5>
</fC03>
<fC03 i1="25" i2="X" l="FRE"><s0>Citrus sinensis</s0>
<s2>NS</s2>
<s4>INC</s4>
<s5>72</s5>
</fC03>
<fC03 i1="26" i2="X" l="FRE"><s0>Citrus sinensis Poncirus trifoliata</s0>
<s2>NS</s2>
<s4>INC</s4>
<s5>73</s5>
</fC03>
<fC03 i1="27" i2="X" l="FRE"><s0>Isomarticine</s0>
<s2>NK</s2>
<s4>INC</s4>
<s5>78</s5>
</fC03>
<fC03 i1="28" i2="X" l="FRE"><s0>Naphthazarine</s0>
<s2>NK</s2>
<s4>INC</s4>
<s5>79</s5>
</fC03>
<fC03 i1="29" i2="X" l="FRE"><s0>Dépérissement agrume</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="29" i2="X" l="ENG"><s0>citrus blight</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Rutaceae</s0>
<s2>NS</s2>
</fC07>
<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>
</fC07>
<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>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Angiospermae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Angiospermae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="04" i2="X" l="FRE"><s0>Spermatophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="04" i2="X" l="ENG"><s0>Spermatophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="04" i2="X" l="SPA"><s0>Spermatophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="05" i2="X" l="FRE"><s0>Fungi Imperfecti</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="05" i2="X" l="ENG"><s0>Fungi Imperfecti</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="05" i2="X" l="SPA"><s0>Fungi Imperfecti</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="06" i2="X" l="FRE"><s0>Fungi</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="06" i2="X" l="ENG"><s0>Fungi</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="06" i2="X" l="SPA"><s0>Fungi</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="07" i2="X" l="FRE"><s0>Thallophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="07" i2="X" l="ENG"><s0>Thallophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="07" i2="X" l="SPA"><s0>Thallophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="08" i2="X" l="FRE"><s0>Afrique</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="08" i2="X" l="ENG"><s0>Africa</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="08" i2="X" l="SPA"><s0>Africa</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="09" i2="X" l="FRE"><s0>Arboriculture</s0>
<s4>INC</s4>
<s5>33</s5>
</fC07>
<fC07 i1="10" i2="X" l="FRE"><s0>Biochimie</s0>
<s4>INC</s4>
<s5>34</s5>
</fC07>
<fC07 i1="11" i2="X" l="FRE"><s0>Mycologie</s0>
<s4>INC</s4>
<s5>35</s5>
</fC07>
<fC07 i1="12" i2="X" l="FRE"><s0>Tissu conducteur</s0>
<s4>INC</s4>
<s5>38</s5>
</fC07>
<fC07 i1="13" i2="X" l="FRE"><s0>Agrume</s0>
<s5>42</s5>
</fC07>
<fC07 i1="13" i2="X" l="ENG"><s0>Citrus fruit</s0>
<s5>42</s5>
</fC07>
<fC07 i1="13" i2="X" l="SPA"><s0>Agrios</s0>
<s5>42</s5>
</fC07>
<fC07 i1="14" i2="X" l="FRE"><s0>Arbre fruitier</s0>
<s5>43</s5>
</fC07>
<fC07 i1="14" i2="X" l="ENG"><s0>Fruit tree</s0>
<s5>43</s5>
</fC07>
<fC07 i1="14" i2="X" l="SPA"><s0>Arbol frutal</s0>
<s5>43</s5>
</fC07>
<fC07 i1="15" i2="X" l="FRE"><s0>Culture tropicale</s0>
<s5>44</s5>
</fC07>
<fC07 i1="15" i2="X" l="ENG"><s0>Tropical crop</s0>
<s5>44</s5>
</fC07>
<fC07 i1="15" i2="X" l="SPA"><s0>Cultivo tropical</s0>
<s5>44</s5>
</fC07>
<fC07 i1="16" i2="X" l="FRE"><s0>Phytopathogène</s0>
<s5>45</s5>
</fC07>
<fC07 i1="16" i2="X" l="ENG"><s0>Plant pathogen</s0>
<s5>45</s5>
</fC07>
<fC07 i1="16" i2="X" l="SPA"><s0>Fitopatógeno</s0>
<s5>45</s5>
</fC07>
<fC07 i1="17" i2="X" l="FRE"><s0>Composé biologique</s0>
<s5>50</s5>
</fC07>
<fC07 i1="17" i2="X" l="ENG"><s0>Biological compound</s0>
<s5>50</s5>
</fC07>
<fC07 i1="17" i2="X" l="SPA"><s0>Compuesto biológico</s0>
<s5>50</s5>
</fC07>
<fC07 i1="18" i2="X" l="FRE"><s0>Composé aromatique</s0>
<s4>INC</s4>
<s5>51</s5>
</fC07>
<fC07 i1="19" i2="X" l="FRE"><s0>Hétérocycle azote</s0>
<s4>INC</s4>
<s5>52</s5>
</fC07>
<fC07 i1="20" i2="X" l="FRE"><s0>Hétérocycle oxygène</s0>
<s4>INC</s4>
<s5>53</s5>
</fC07>
<fC07 i1="21" i2="X" l="FRE"><s0>Naphtoquinone dérivé</s0>
<s4>INC</s4>
<s5>54</s5>
</fC07>
<fC07 i1="22" i2="X" l="FRE"><s0>Quinone</s0>
<s4>INC</s4>
<s5>55</s5>
</fC07>
<fC07 i1="23" i2="X" l="FRE"><s0>Elément minéral</s0>
<s4>INC</s4>
<s5>56</s5>
</fC07>
<fC07 i1="24" i2="X" l="FRE"><s0>Oligoélément</s0>
<s4>INC</s4>
<s5>57</s5>
</fC07>
<fC07 i1="25" i2="X" l="FRE"><s0>Benzoisoquinoléine</s0>
<s2>NK</s2>
<s4>INC</s4>
<s5>80</s5>
</fC07>
<fC07 i1="26" i2="X" l="FRE"><s0>Benzo[g]isoquinoléine-5,10-dione dérivé</s0>
<s2>NK</s2>
<s4>INC</s4>
<s5>81</s5>
</fC07>
<fC07 i1="27" i2="X" l="FRE"><s0>Naphtopyrane</s0>
<s2>NK</s2>
<s4>INC</s4>
<s5>84</s5>
</fC07>
<fC07 i1="28" i2="X" l="FRE"><s0>Naphto[2,3-c]pyrane-5,10-dione dérivé</s0>
<s2>NK</s2>
<s4>INC</s4>
<s5>85</s5>
</fC07>
<fN21><s1>225</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 01-0328759 INIST</NO>
<ET>Occurrence of Fusarium-produced naphthazarins in citrus trees and sensitivity of rootstocks to isomarticin in relation to citrus blight</ET>
<AU>JANSE VAN RENSBURG (J. C.); LABUSCHAGNE (N.); NEMEC (S.)</AU>
<AF>Agricultural Research Council, Plant Protection Research Institute, Private Bag X5017/Stellenbosch, 7599/Afrique du Sud (1 aut.); Department of Microbiology and Plant Pathology, Faculty of Biological and Agricultural Sciences, University of Pretoria/Pretoria, 0002/Afrique du Sud (2 aut.); Science and Technology Department, Valencia Community College, 1800 S Kirkman Road/Orlando, FL/Etats-Unis (3 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Plant pathology; ISSN 0032-0862; Coden PLPAAD; Royaume-Uni; Da. 2001; Vol. 50; No. 2; Pp. 258-265; Bibl. 30 ref.</SO>
<LA>Anglais</LA>
<EA>Fusarium solani, the causal fungus of root and crown rot of citrus, produces naphthazarin toxins that were shown to be toxic to citrus plants. It was found that citrus trees in South Africa had varying levels of naphthazarins in their xylem. Significantly higher concentrations of these toxins were detected in trees with blight symptoms than in symptomless trees. Citrus seedlings grown in hydroponic culture containing isomarticin showed inhibition of growth, shortening of roots and accumulation of zinc in the trunk wood. Zinc deficiency symptoms were also observed on certain rootstocks. A procedural ranking of rootstocks indicated that trees with observed tolerance to blight in the field generally had higher tolerance to isomarticin in hydroponic culture, whereas trees susceptible to blight were more sensitive to the toxin. These findings indicate that Fusarium-produced isomarticin is involved in the induction of some of the symptoms associated with citrus blight syndrome.</EA>
<CC>002A34G04</CC>
<FD>Maladie présumée infectieuse; Mycose; Concentration chimique; Déficit; Etiopathogénie; Phytotoxicité; Tolérance; Trouble nutrition; Xylème; Porte greffe; Citrus; Fusarium solani; Poncirus; Phytotoxine; Zinc; Etude expérimentale; Etude en serre; Culture hydroponique; Etude sur terrain; République Sud Africaine; Citrus jambhiri; Citrus limonia; Citrus paradisi Poncirus trifoliata; Citrus reticulata; Citrus sinensis; Citrus sinensis Poncirus trifoliata; Isomarticine; Naphthazarine; Dépérissement agrume</FD>
<FG>Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Fungi Imperfecti; Fungi; Thallophyta; Afrique; Arboriculture; Biochimie; Mycologie; Tissu conducteur; Agrume; Arbre fruitier; Culture tropicale; Phytopathogène; Composé biologique; Composé aromatique; Hétérocycle azote; Hétérocycle oxygène; Naphtoquinone dérivé; Quinone; Elément minéral; Oligoélément; Benzoisoquinoléine; Benzo[g]isoquinoléine-5,10- dione dérivé; Naphtopyrane; Naphto[2,3-c]pyrane-5,10-dione dérivé</FG>
<ED>Tolerance; Rootstock; Citrus; Fusarium solani; South Africa(Republic); citrus blight</ED>
<EG>Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Fungi Imperfecti; Fungi; Thallophyta; Africa; Citrus fruit; Fruit tree; Tropical crop; Plant pathogen; Biological compound</EG>
<SD>Tolerancia; Portainjerto; Citrus; Fusarium solani; República de Sudáfrica</SD>
<LO>INIST-7414.354000095147540140</LO>
<ID>01-0328759</ID>
</server>
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