Mechanical wounding and abscission in citrus
Identifieur interne : 000658 ( PascalFrancis/Corpus ); précédent : 000657; suivant : 000659Mechanical wounding and abscission in citrus
Auteurs : Igor A. Kostenyuk ; Jacqueline K. BurnsSource :
- Physiologia Plantarum : (København. 1948) [ 0031-9317 ] ; 2004.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Fruit detachment force (FDF), ethylene evolution, fruit and leaf drop were determined in Citrus sinensis for periods up to 96 h after mechanical wounding. Injury by removing a thin section of mature fruit flavedo reduced FDF, increased ethylene evolution and promoted abscission. Injuring flavedo 1 cm below the calyx was more effective at reducing FDF than injuring flavedo at the equator or the blossom-end of mature fruit. Injuring the calyx or peduncle of mature fruit, or injuring three leaves closest to the mature fruit did not reduce FDF. Immature fruitlets either did not abscise or underwent low rates of abscission in response to mechanical wounding, depending on age. Inhibiting ethylene binding in wounded mature fruit with 1-methylcyclopropene (1-MCP) increased ethylene evolution compared with wounded fruit alone, but the reduction in FDF was similar. When an ethylene biosynthesis inhibitor (aminoethoxyvinylglycine, AVG) was used, reduction in FDF of wounded mature fruit exposed to AVG was similar to that of wounded fruit alone but ethylene production was markedly reduced. Wounding mature leaf blades in the presence or absence of 1-MCP resulted in elevated but equal ethylene evolution up to 48 h after wounding, however, no leaf drop occurred. Thereafter, ethylene evolution was higher in 1-MCP-treated wounded leaves. Removing up to 77% of the total mature leaf area did not cause leaf drop, nor did wounding tissue across the laminar or petiolar abscission zones. Leaflets of 5 mm length reached nearly 100% abscission after mechanical wounding, whereas wounding leaves 20 mm length resulted in 15% abscission. The data suggest that mechanical wounding of flavedo results in mature fruit abscission, and ethylene binding may not be mandatory to initiate abscission in citrus fruit. The differential response of fruit and leaves at different ages to wounding may be related to potential contribution to carbohydrate accumulation, and production and sensitivity of tissues to an abscission signal(s).
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 04-0580688 INIST |
---|---|
ET : | Mechanical wounding and abscission in citrus |
AU : | KOSTENYUK (Igor A.); BURNS (Jacqueline K.) |
AF : | University of Florida, IFAS, Horticultural Sciences Department, Citrus Research and Education Center, 700 Experiment Station Road/Lake Alfred, FL 33850-2299/Etats-Unis (1 aut., 2 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Physiologia Plantarum : (København. 1948); ISSN 0031-9317; Coden PHPLAI; Royaume-Uni; Da. 2004; Vol. 122; No. 3; Pp. 354-361; Bibl. 36 ref. |
LA : | Anglais |
EA : | Fruit detachment force (FDF), ethylene evolution, fruit and leaf drop were determined in Citrus sinensis for periods up to 96 h after mechanical wounding. Injury by removing a thin section of mature fruit flavedo reduced FDF, increased ethylene evolution and promoted abscission. Injuring flavedo 1 cm below the calyx was more effective at reducing FDF than injuring flavedo at the equator or the blossom-end of mature fruit. Injuring the calyx or peduncle of mature fruit, or injuring three leaves closest to the mature fruit did not reduce FDF. Immature fruitlets either did not abscise or underwent low rates of abscission in response to mechanical wounding, depending on age. Inhibiting ethylene binding in wounded mature fruit with 1-methylcyclopropene (1-MCP) increased ethylene evolution compared with wounded fruit alone, but the reduction in FDF was similar. When an ethylene biosynthesis inhibitor (aminoethoxyvinylglycine, AVG) was used, reduction in FDF of wounded mature fruit exposed to AVG was similar to that of wounded fruit alone but ethylene production was markedly reduced. Wounding mature leaf blades in the presence or absence of 1-MCP resulted in elevated but equal ethylene evolution up to 48 h after wounding, however, no leaf drop occurred. Thereafter, ethylene evolution was higher in 1-MCP-treated wounded leaves. Removing up to 77% of the total mature leaf area did not cause leaf drop, nor did wounding tissue across the laminar or petiolar abscission zones. Leaflets of 5 mm length reached nearly 100% abscission after mechanical wounding, whereas wounding leaves 20 mm length resulted in 15% abscission. The data suggest that mechanical wounding of flavedo results in mature fruit abscission, and ethylene binding may not be mandatory to initiate abscission in citrus fruit. The differential response of fruit and leaves at different ages to wounding may be related to potential contribution to carbohydrate accumulation, and production and sensitivity of tissues to an abscission signal(s). |
CC : | 002A32E06E |
FD : | Abscission; Fruit; Feuille végétal; Biosynthèse; Surface foliaire; Glucide; Citrus sinensis; Ethylène |
FG : | Rutaceae; Dicotyledones; Angiospermae; Spermatophyta |
ED : | Abscission; Fruit; Plant leaf; Biosynthesis; Leaf area; Carbohydrate; Citrus sinensis; Ethylene |
EG : | Rutaceae; Dicotyledones; Angiospermae; Spermatophyta |
SD : | Abscisión; Fruto; Hoja vegetal; Biosíntesis; Superficie foliar; Glúcido; Citrus sinensis; Etileno |
LO : | INIST-2583.354000120639300080 |
ID : | 04-0580688 |
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Pascal:04-0580688Le document en format XML
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<author><name sortKey="Kostenyuk, Igor A" sort="Kostenyuk, Igor A" uniqKey="Kostenyuk I" first="Igor A." last="Kostenyuk">Igor A. Kostenyuk</name>
<affiliation><inist:fA14 i1="01"><s1>University of Florida, IFAS, Horticultural Sciences Department, Citrus Research and Education Center, 700 Experiment Station Road</s1>
<s2>Lake Alfred, FL 33850-2299</s2>
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<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
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<author><name sortKey="Burns, Jacqueline K" sort="Burns, Jacqueline K" uniqKey="Burns J" first="Jacqueline K." last="Burns">Jacqueline K. Burns</name>
<affiliation><inist:fA14 i1="01"><s1>University of Florida, IFAS, Horticultural Sciences Department, Citrus Research and Education Center, 700 Experiment Station Road</s1>
<s2>Lake Alfred, FL 33850-2299</s2>
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<sZ>1 aut.</sZ>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Mechanical wounding and abscission in citrus</title>
<author><name sortKey="Kostenyuk, Igor A" sort="Kostenyuk, Igor A" uniqKey="Kostenyuk I" first="Igor A." last="Kostenyuk">Igor A. Kostenyuk</name>
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<author><name sortKey="Burns, Jacqueline K" sort="Burns, Jacqueline K" uniqKey="Burns J" first="Jacqueline K." last="Burns">Jacqueline K. Burns</name>
<affiliation><inist:fA14 i1="01"><s1>University of Florida, IFAS, Horticultural Sciences Department, Citrus Research and Education Center, 700 Experiment Station Road</s1>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Abscission</term>
<term>Biosynthesis</term>
<term>Carbohydrate</term>
<term>Citrus sinensis</term>
<term>Ethylene</term>
<term>Fruit</term>
<term>Leaf area</term>
<term>Plant leaf</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Abscission</term>
<term>Fruit</term>
<term>Feuille végétal</term>
<term>Biosynthèse</term>
<term>Surface foliaire</term>
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<term>Citrus sinensis</term>
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<front><div type="abstract" xml:lang="en">Fruit detachment force (FDF), ethylene evolution, fruit and leaf drop were determined in Citrus sinensis for periods up to 96 h after mechanical wounding. Injury by removing a thin section of mature fruit flavedo reduced FDF, increased ethylene evolution and promoted abscission. Injuring flavedo 1 cm below the calyx was more effective at reducing FDF than injuring flavedo at the equator or the blossom-end of mature fruit. Injuring the calyx or peduncle of mature fruit, or injuring three leaves closest to the mature fruit did not reduce FDF. Immature fruitlets either did not abscise or underwent low rates of abscission in response to mechanical wounding, depending on age. Inhibiting ethylene binding in wounded mature fruit with 1-methylcyclopropene (1-MCP) increased ethylene evolution compared with wounded fruit alone, but the reduction in FDF was similar. When an ethylene biosynthesis inhibitor (aminoethoxyvinylglycine, AVG) was used, reduction in FDF of wounded mature fruit exposed to AVG was similar to that of wounded fruit alone but ethylene production was markedly reduced. Wounding mature leaf blades in the presence or absence of 1-MCP resulted in elevated but equal ethylene evolution up to 48 h after wounding, however, no leaf drop occurred. Thereafter, ethylene evolution was higher in 1-MCP-treated wounded leaves. Removing up to 77% of the total mature leaf area did not cause leaf drop, nor did wounding tissue across the laminar or petiolar abscission zones. Leaflets of 5 mm length reached nearly 100% abscission after mechanical wounding, whereas wounding leaves 20 mm length resulted in 15% abscission. The data suggest that mechanical wounding of flavedo results in mature fruit abscission, and ethylene binding may not be mandatory to initiate abscission in citrus fruit. The differential response of fruit and leaves at different ages to wounding may be related to potential contribution to carbohydrate accumulation, and production and sensitivity of tissues to an abscission signal(s).</div>
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<fC01 i1="01" l="ENG"><s0>Fruit detachment force (FDF), ethylene evolution, fruit and leaf drop were determined in Citrus sinensis for periods up to 96 h after mechanical wounding. Injury by removing a thin section of mature fruit flavedo reduced FDF, increased ethylene evolution and promoted abscission. Injuring flavedo 1 cm below the calyx was more effective at reducing FDF than injuring flavedo at the equator or the blossom-end of mature fruit. Injuring the calyx or peduncle of mature fruit, or injuring three leaves closest to the mature fruit did not reduce FDF. Immature fruitlets either did not abscise or underwent low rates of abscission in response to mechanical wounding, depending on age. Inhibiting ethylene binding in wounded mature fruit with 1-methylcyclopropene (1-MCP) increased ethylene evolution compared with wounded fruit alone, but the reduction in FDF was similar. When an ethylene biosynthesis inhibitor (aminoethoxyvinylglycine, AVG) was used, reduction in FDF of wounded mature fruit exposed to AVG was similar to that of wounded fruit alone but ethylene production was markedly reduced. Wounding mature leaf blades in the presence or absence of 1-MCP resulted in elevated but equal ethylene evolution up to 48 h after wounding, however, no leaf drop occurred. Thereafter, ethylene evolution was higher in 1-MCP-treated wounded leaves. Removing up to 77% of the total mature leaf area did not cause leaf drop, nor did wounding tissue across the laminar or petiolar abscission zones. Leaflets of 5 mm length reached nearly 100% abscission after mechanical wounding, whereas wounding leaves 20 mm length resulted in 15% abscission. The data suggest that mechanical wounding of flavedo results in mature fruit abscission, and ethylene binding may not be mandatory to initiate abscission in citrus fruit. The differential response of fruit and leaves at different ages to wounding may be related to potential contribution to carbohydrate accumulation, and production and sensitivity of tissues to an abscission signal(s).</s0>
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<s5>04</s5>
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<s5>06</s5>
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<s5>06</s5>
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<s2>NK</s2>
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<server><NO>PASCAL 04-0580688 INIST</NO>
<ET>Mechanical wounding and abscission in citrus</ET>
<AU>KOSTENYUK (Igor A.); BURNS (Jacqueline K.)</AU>
<AF>University of Florida, IFAS, Horticultural Sciences Department, Citrus Research and Education Center, 700 Experiment Station Road/Lake Alfred, FL 33850-2299/Etats-Unis (1 aut., 2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Physiologia Plantarum : (København. 1948); ISSN 0031-9317; Coden PHPLAI; Royaume-Uni; Da. 2004; Vol. 122; No. 3; Pp. 354-361; Bibl. 36 ref.</SO>
<LA>Anglais</LA>
<EA>Fruit detachment force (FDF), ethylene evolution, fruit and leaf drop were determined in Citrus sinensis for periods up to 96 h after mechanical wounding. Injury by removing a thin section of mature fruit flavedo reduced FDF, increased ethylene evolution and promoted abscission. Injuring flavedo 1 cm below the calyx was more effective at reducing FDF than injuring flavedo at the equator or the blossom-end of mature fruit. Injuring the calyx or peduncle of mature fruit, or injuring three leaves closest to the mature fruit did not reduce FDF. Immature fruitlets either did not abscise or underwent low rates of abscission in response to mechanical wounding, depending on age. Inhibiting ethylene binding in wounded mature fruit with 1-methylcyclopropene (1-MCP) increased ethylene evolution compared with wounded fruit alone, but the reduction in FDF was similar. When an ethylene biosynthesis inhibitor (aminoethoxyvinylglycine, AVG) was used, reduction in FDF of wounded mature fruit exposed to AVG was similar to that of wounded fruit alone but ethylene production was markedly reduced. Wounding mature leaf blades in the presence or absence of 1-MCP resulted in elevated but equal ethylene evolution up to 48 h after wounding, however, no leaf drop occurred. Thereafter, ethylene evolution was higher in 1-MCP-treated wounded leaves. Removing up to 77% of the total mature leaf area did not cause leaf drop, nor did wounding tissue across the laminar or petiolar abscission zones. Leaflets of 5 mm length reached nearly 100% abscission after mechanical wounding, whereas wounding leaves 20 mm length resulted in 15% abscission. The data suggest that mechanical wounding of flavedo results in mature fruit abscission, and ethylene binding may not be mandatory to initiate abscission in citrus fruit. The differential response of fruit and leaves at different ages to wounding may be related to potential contribution to carbohydrate accumulation, and production and sensitivity of tissues to an abscission signal(s).</EA>
<CC>002A32E06E</CC>
<FD>Abscission; Fruit; Feuille végétal; Biosynthèse; Surface foliaire; Glucide; Citrus sinensis; Ethylène</FD>
<FG>Rutaceae; Dicotyledones; Angiospermae; Spermatophyta</FG>
<ED>Abscission; Fruit; Plant leaf; Biosynthesis; Leaf area; Carbohydrate; Citrus sinensis; Ethylene</ED>
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