The role of ethylene in abscission of sweet orange promoted by exogenous application of the abscission agent 5-chloro-3-methyl-4-nitro-1H-pyrazole (CMNP)
| Autor: | S. Sharma, Robert C. Ebel, Mark A. Ritenour |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Ethylene 5-chloro-3-methyl-4-nitro-1H-pyrazole Chemistry 04 agricultural and veterinary sciences Orange (colour) Horticulture 01 natural sciences Medicinal chemistry 040501 horticulture chemistry.chemical_compound Silver thiosulfate Abscission Biochemistry Genetics 0405 other agricultural sciences 010606 plant biology & botany |
| Zdroj: | The Journal of Horticultural Science and Biotechnology. 92:120-129 |
| ISSN: | 2380-4084 1462-0316 |
| Popis: | Mature ‘Valencia’ fruit were treated with 5-chloro-3-methyl-4-nitro-1H-pyrazole (CMNP), and the ethylene inhibitors aminoethoxy vinyl glycine (AVG) and silver thiosulfate (STS), to assess involvement of ethylene in abscission via CMNP. Fruit detachment force (FDF) and ethylene evolution were measured over time. Accumulation of the ethylene precursor 1-aminocyclopropane-1-carboxylate (ACC) in peel upon CMNP application was assessed and impact of application of ACC on FDF was estimated when applied 1 cm away from the abscission zone (AZ), to determine its potential as a signaling molecule in promoting fruit loosening. CMNP when applied alone reduced FDF by 50%. AVG and STS inhibited fruit loosening considerably at 500 µM and 10 mM, respectively, when applied with 2 mM CMNP. ACC accumulation in peel was highest 2 days after CMNP application, which preceded the maximum decline in FDF which occurred a day later, indicating that ACC serves as a potential signaling molecule that triggers abscission in th... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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