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Evaluation of growth regulator inhibitors for controlling postbloom fruit drop (PFD) of citrus induced by the fungus Colletotrichum acutatum

Identifieur interne : 000465 ( PascalFrancis/Curation ); précédent : 000464; suivant : 000466

Evaluation of growth regulator inhibitors for controlling postbloom fruit drop (PFD) of citrus induced by the fungus Colletotrichum acutatum

Auteurs : Hui-Qin Chen [États-Unis] ; Katherine L. Dekkers [États-Unis] ; LIHUA CAO [République populaire de Chine] ; Jacqueline K. Burns [États-Unis] ; L. W. Timmer [États-Unis] ; Kuang-Ren Chung [États-Unis]

Source :

RBID : Pascal:06-0410221

Descripteurs français

English descriptors

Abstract

Postbloom fruit drop (PFD) of citrus is incited by the fungus Colletotrichum acutatum J. H. Simmonds and may result in young fruit drop and severe yield losses. Previous studies suggested that imbalance of growth regulators such as auxin, ethylene, and jasmonic acid (JA) plays an essential role in young fruit abscission. In this work, we determined the factors associated with fungal-induced fruit drop by testing compounds inhibitory to hormonal transport or biosynthesis. As assessed on sweet orange (Citrus sinensis Osbeck) and grapefruit (C. paradisi Macf.) for 4 years, we found that many auxin transport and action inhibitors such as 2,3,5-triiodobenzolic acid (TIBA), 2-(4-chlorophenoxy)-2-methyl-propionic acid (clofibrate), or quercetin and JA biosynthesis inhibitors such as salicylic acid (SA) and aspirin (methyl-SA) applied 7 d after C. acutatum infection resulted in higher percentages of young fruit retention compared with the water controls. The commercial products ReZist and Actigard, widely used as systemic acquired resistance (SAR) agents, also improved fruit retention. Furthermore, application of gibberellic acid (GA3) on sweet orange, regardless of C. acutatum infection, significantly increased fruit retention. These commercial products may be very useful in managing this destructive disease of citrus in the field.
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C01 01    ENG  @0 Postbloom fruit drop (PFD) of citrus is incited by the fungus Colletotrichum acutatum J. H. Simmonds and may result in young fruit drop and severe yield losses. Previous studies suggested that imbalance of growth regulators such as auxin, ethylene, and jasmonic acid (JA) plays an essential role in young fruit abscission. In this work, we determined the factors associated with fungal-induced fruit drop by testing compounds inhibitory to hormonal transport or biosynthesis. As assessed on sweet orange (Citrus sinensis Osbeck) and grapefruit (C. paradisi Macf.) for 4 years, we found that many auxin transport and action inhibitors such as 2,3,5-triiodobenzolic acid (TIBA), 2-(4-chlorophenoxy)-2-methyl-propionic acid (clofibrate), or quercetin and JA biosynthesis inhibitors such as salicylic acid (SA) and aspirin (methyl-SA) applied 7 d after C. acutatum infection resulted in higher percentages of young fruit retention compared with the water controls. The commercial products ReZist and Actigard, widely used as systemic acquired resistance (SAR) agents, also improved fruit retention. Furthermore, application of gibberellic acid (GA3) on sweet orange, regardless of C. acutatum infection, significantly increased fruit retention. These commercial products may be very useful in managing this destructive disease of citrus in the field.
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Pascal:06-0410221

Le document en format XML

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<div type="abstract" xml:lang="en">Postbloom fruit drop (PFD) of citrus is incited by the fungus Colletotrichum acutatum J. H. Simmonds and may result in young fruit drop and severe yield losses. Previous studies suggested that imbalance of growth regulators such as auxin, ethylene, and jasmonic acid (JA) plays an essential role in young fruit abscission. In this work, we determined the factors associated with fungal-induced fruit drop by testing compounds inhibitory to hormonal transport or biosynthesis. As assessed on sweet orange (Citrus sinensis Osbeck) and grapefruit (C. paradisi Macf.) for 4 years, we found that many auxin transport and action inhibitors such as 2,3,5-triiodobenzolic acid (TIBA), 2-(4-chlorophenoxy)-2-methyl-propionic acid (clofibrate), or quercetin and JA biosynthesis inhibitors such as salicylic acid (SA) and aspirin (methyl-SA) applied 7 d after C. acutatum infection resulted in higher percentages of young fruit retention compared with the water controls. The commercial products ReZist and Actigard, widely used as systemic acquired resistance (SAR) agents, also improved fruit retention. Furthermore, application of gibberellic acid (GA
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<sZ>4 aut.</sZ>
</fA14>
<fA14 i1="04">
<s1>Department of Plant Pathology, IFAS, University of Florida</s1>
<s3>USA</s3>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</fA14>
<fA20>
<s1>1317-1321</s1>
</fA20>
<fA21>
<s1>2006</s1>
</fA21>
<fA23 i1="01">
<s0>ENG</s0>
</fA23>
<fA43 i1="01">
<s1>INIST</s1>
<s2>13300</s2>
<s5>354000133516070350</s5>
</fA43>
<fA44>
<s0>0000</s0>
<s1>© 2006 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45>
<s0>29 ref.</s0>
</fA45>
<fA47 i1="01" i2="1">
<s0>06-0410221</s0>
</fA47>
<fA60>
<s1>P</s1>
</fA60>
<fA61>
<s0>A</s0>
</fA61>
<fA64 i1="01" i2="1">
<s0>HortScience</s0>
</fA64>
<fA66 i1="01">
<s0>USA</s0>
</fA66>
<fC01 i1="01" l="ENG">
<s0>Postbloom fruit drop (PFD) of citrus is incited by the fungus Colletotrichum acutatum J. H. Simmonds and may result in young fruit drop and severe yield losses. Previous studies suggested that imbalance of growth regulators such as auxin, ethylene, and jasmonic acid (JA) plays an essential role in young fruit abscission. In this work, we determined the factors associated with fungal-induced fruit drop by testing compounds inhibitory to hormonal transport or biosynthesis. As assessed on sweet orange (Citrus sinensis Osbeck) and grapefruit (C. paradisi Macf.) for 4 years, we found that many auxin transport and action inhibitors such as 2,3,5-triiodobenzolic acid (TIBA), 2-(4-chlorophenoxy)-2-methyl-propionic acid (clofibrate), or quercetin and JA biosynthesis inhibitors such as salicylic acid (SA) and aspirin (methyl-SA) applied 7 d after C. acutatum infection resulted in higher percentages of young fruit retention compared with the water controls. The commercial products ReZist and Actigard, widely used as systemic acquired resistance (SAR) agents, also improved fruit retention. Furthermore, application of gibberellic acid (GA
<sub>3</sub>
) on sweet orange, regardless of C. acutatum infection, significantly increased fruit retention. These commercial products may be very useful in managing this destructive disease of citrus in the field.</s0>
</fC01>
<fC02 i1="01" i2="X">
<s0>002A32C04</s0>
</fC02>
<fC02 i1="02" i2="X">
<s0>002A34G</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE">
<s0>Evaluation</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG">
<s0>Evaluation</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA">
<s0>Evaluación</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE">
<s0>Croissance</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG">
<s0>Growth</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA">
<s0>Crecimiento</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE">
<s0>Inhibiteur</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG">
<s0>Inhibitor</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA">
<s0>Inhibidor</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE">
<s0>Abscission</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG">
<s0>Abscission</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA">
<s0>Abscisión</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE">
<s0>Fruit</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG">
<s0>Fruit</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA">
<s0>Fruto</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE">
<s0>Horticulture</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG">
<s0>Horticulture</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA">
<s0>Horticultura</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE">
<s0>Traitement substance croissance</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG">
<s0>Growth regulator treatment</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA">
<s0>Tratamiento substancia crecimiento</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE">
<s0>Citrus sinensis</s0>
<s2>NS</s2>
<s5>10</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG">
<s0>Citrus sinensis</s0>
<s2>NS</s2>
<s5>10</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA">
<s0>Citrus sinensis</s0>
<s2>NS</s2>
<s5>10</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE">
<s0>Colletotrichum acutatum</s0>
<s2>NS</s2>
<s5>12</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG">
<s0>Colletotrichum acutatum</s0>
<s2>NS</s2>
<s5>12</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA">
<s0>Colletotrichum acutatum</s0>
<s2>NS</s2>
<s5>12</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE">
<s0>Auxine</s0>
<s2>FF</s2>
<s5>15</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG">
<s0>Auxin</s0>
<s2>FF</s2>
<s5>15</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA">
<s0>Auxina</s0>
<s2>FF</s2>
<s5>15</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE">
<s0>Gibbérelline</s0>
<s2>FF</s2>
<s5>16</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG">
<s0>Gibberellin</s0>
<s2>FF</s2>
<s5>16</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA">
<s0>Giberelina</s0>
<s2>FF</s2>
<s5>16</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE">
<s0>Gibbérellique acide</s0>
<s2>NK</s2>
<s2>FR</s2>
<s2>FF</s2>
<s5>17</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG">
<s0>Gibberellic acid</s0>
<s2>NK</s2>
<s2>FR</s2>
<s2>FF</s2>
<s5>17</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA">
<s0>Giberelico ácido</s0>
<s2>NK</s2>
<s2>FR</s2>
<s2>FF</s2>
<s5>17</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE">
<s0>Salicylique acide</s0>
<s2>NK</s2>
<s2>FR</s2>
<s5>18</s5>
</fC03>
<fC03 i1="13" i2="X" l="ENG">
<s0>Salicylic acid</s0>
<s2>NK</s2>
<s2>FR</s2>
<s5>18</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE">
<s0>Benzoïque acide(2,3,5-triiodo)</s0>
<s4>INC</s4>
<s5>78</s5>
</fC03>
<fC03 i1="15" i2="X" l="FRE">
<s0>Chute de fruit</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="15" i2="X" l="ENG">
<s0>Fruit drop</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="15" i2="X" l="SPA">
<s0>Caída prematura de frutos</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="16" i2="X" l="FRE">
<s0>Jasmonique acide</s0>
<s4>CD</s4>
<s5>97</s5>
</fC03>
<fC03 i1="16" i2="X" l="ENG">
<s0>Jasmonic acid</s0>
<s4>CD</s4>
<s5>97</s5>
</fC03>
<fC03 i1="16" i2="X" l="SPA">
<s0>Acido jasmónico</s0>
<s4>CD</s4>
<s5>97</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>Arbre fruitier</s0>
<s5>31</s5>
</fC07>
<fC07 i1="08" i2="X" l="ENG">
<s0>Fruit tree</s0>
<s5>31</s5>
</fC07>
<fC07 i1="08" i2="X" l="SPA">
<s0>Arbol frutal</s0>
<s5>31</s5>
</fC07>
<fC07 i1="09" i2="X" l="FRE">
<s0>Agrume</s0>
<s5>32</s5>
</fC07>
<fC07 i1="09" i2="X" l="ENG">
<s0>Citrus fruit</s0>
<s5>32</s5>
</fC07>
<fC07 i1="09" i2="X" l="SPA">
<s0>Agrios</s0>
<s5>32</s5>
</fC07>
<fC07 i1="10" i2="X" l="FRE">
<s0>Phytopathogène</s0>
<s5>39</s5>
</fC07>
<fC07 i1="10" i2="X" l="ENG">
<s0>Plant pathogen</s0>
<s5>39</s5>
</fC07>
<fC07 i1="10" i2="X" l="SPA">
<s0>Fitopatógeno</s0>
<s5>39</s5>
</fC07>
<fC07 i1="11" i2="X" l="FRE">
<s0>Plante fruitière</s0>
<s5>40</s5>
</fC07>
<fC07 i1="11" i2="X" l="ENG">
<s0>Fruit crop</s0>
<s5>40</s5>
</fC07>
<fC07 i1="11" i2="X" l="SPA">
<s0>Planta frutal</s0>
<s5>40</s5>
</fC07>
<fC07 i1="12" i2="X" l="FRE">
<s0>Substance croissance végétal</s0>
<s5>50</s5>
</fC07>
<fC07 i1="12" i2="X" l="ENG">
<s0>Plant growth substance</s0>
<s5>50</s5>
</fC07>
<fC07 i1="12" i2="X" l="SPA">
<s0>Substancia crecimiento vegetal</s0>
<s5>50</s5>
</fC07>
<fC07 i1="13" i2="X" l="FRE">
<s0>Terpénoïde</s0>
<s2>FX</s2>
<s5>51</s5>
</fC07>
<fC07 i1="13" i2="X" l="ENG">
<s0>Terpenoid</s0>
<s2>FX</s2>
<s5>51</s5>
</fC07>
<fC07 i1="13" i2="X" l="SPA">
<s0>Terpenoide</s0>
<s2>FX</s2>
<s5>51</s5>
</fC07>
<fC07 i1="14" i2="X" l="FRE">
<s0>Acide phénolique</s0>
<s5>52</s5>
</fC07>
<fC07 i1="14" i2="X" l="ENG">
<s0>Phenolic acid</s0>
<s5>52</s5>
</fC07>
<fC07 i1="14" i2="X" l="SPA">
<s0>Acido fenólico</s0>
<s5>52</s5>
</fC07>
<fC07 i1="15" i2="X" l="FRE">
<s0>Composé organique</s0>
<s2>NA</s2>
<s5>53</s5>
</fC07>
<fC07 i1="15" i2="X" l="ENG">
<s0>Organic compounds</s0>
<s2>NA</s2>
<s5>53</s5>
</fC07>
<fC07 i1="15" i2="X" l="SPA">
<s0>Compuesto orgánico</s0>
<s2>NA</s2>
<s5>53</s5>
</fC07>
<fC07 i1="16" i2="X" l="FRE">
<s0>Acide arénoïque</s0>
<s5>54</s5>
</fC07>
<fC07 i1="16" i2="X" l="ENG">
<s0>Arenoic acid</s0>
<s5>54</s5>
</fC07>
<fC07 i1="16" i2="X" l="SPA">
<s0>Acido arenoico</s0>
<s5>54</s5>
</fC07>
<fC07 i1="17" i2="X" l="FRE">
<s0>Acide carboxylique</s0>
<s5>55</s5>
</fC07>
<fC07 i1="17" i2="X" l="ENG">
<s0>Carboxylic acid</s0>
<s5>55</s5>
</fC07>
<fC07 i1="17" i2="X" l="SPA">
<s0>Acido carboxílico</s0>
<s5>55</s5>
</fC07>
<fC07 i1="18" i2="X" l="FRE">
<s0>Acide organique</s0>
<s5>56</s5>
</fC07>
<fC07 i1="18" i2="X" l="ENG">
<s0>Organic acids</s0>
<s5>56</s5>
</fC07>
<fC07 i1="18" i2="X" l="SPA">
<s0>Acido orgánico</s0>
<s5>56</s5>
</fC07>
<fN21>
<s1>275</s1>
</fN21>
<fN44 i1="01">
<s1>OTO</s1>
</fN44>
<fN82>
<s1>OTO</s1>
</fN82>
</pA>
</standard>
</inist>
</record>

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   |wiki=    Wicri/Bois
   |area=    OrangerV1
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   |texte=   Evaluation of growth regulator inhibitors for controlling postbloom fruit drop (PFD) of citrus induced by the fungus Colletotrichum acutatum
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