Improvement in Handpicking Efficiency of Satsuma Mandarin Fruit with Combination Treatments of Gibberellin, Prohydrojasmon and Ethephon

Satô, Keiko; Ikoma, Yoshinori

doi:10.2503/hortj.okd-003

Cited by 7 publications

(6 citation statements)

References 11 publications

(3 reference statements)

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“…Prohydrojasmon (PDJ) is a synthetic analog of JA, developed for use as a stable, cost-effective and non-toxic plant growth regulator ( 20 ). Previous studies have demonstrated that the preharvest application of PDJ can also improve color development by inducing anthocyanins accumulation in the fruit from several species of mandarin orange ( 21 ), mango ( 22 ), apple ( 23 ), and peach ( 24 ). Several studies revealed that MeJA promotes anthocyanin accumulation by up-regulating associated gene expression in the flavonoid pathway ( 25 , 26 ).…”

Section: Introductionmentioning

confidence: 99%

Post-harvest Application of Methyl Jasmonate or Prohydrojasmon Affects Color Development and Anthocyanins Biosynthesis in Peach by Regulation of Sucrose Metabolism

et al. 2022

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The roles of methyl jasmonate (MeJA) and prohydrojasmon (PDJ) in postharvest color development and anthocyanins biosynthesis in the skin of peach fruit remain unclear. In this study, peach fruit were infiltrated with MeJA (200 μM) or PDJ (40 μM) and stored at 22°C for 7 days. The results showed that treatment with MeJA or PDJ had a positive effect on red color formation in peach fruits due to anthocyanins accumulation (∼120% increase). This was attributed to increased enzyme activities, and enhanced transcript abundance of the genes associated with anthocyanins biosynthesis, induced by MeJA or PDJ. Both MeJA and PDJ promoted sucrose biosynthesis, and the subsequently elevated levels of the sucrose during storage were positively correlated with anthocyanins accumulation (0.49) and the activities of key biosynthesis enzymes (0.42–0.79). Based on these findings, we proposed that MeJA or PDJ treatments promote anthocyanins biosynthesis by regulating sucrose metabolism during the postharvest storage of peach fruit.

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Section: Introductionmentioning

confidence: 99%

Post-harvest Application of Methyl Jasmonate or Prohydrojasmon Affects Color Development and Anthocyanins Biosynthesis in Peach by Regulation of Sucrose Metabolism

et al. 2022

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“…Earlier research proved that PDJ functions mimic those of JA in plants [19][20][21]. The use of PDJ as a plant growth regulator remains focused on fruits, including apples, oranges, mangoes, and grapes [20,[22][23][24]. Specifically, it has been applied to enhance mango and red pear fruit coloration [25,26].…”

Section: Introductionmentioning

confidence: 99%

Prohydrojasmon Promotes the Accumulation of Phenolic Compounds in Red Leaf Lettuce

Takahashi

Namioka

Azis

et al. 2021

Plants

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Prohydrojasmon (PDJ) is a synthetic jasmonate derivative that is primarily used as a growth regulator, but its mechanism of action is unclear. In this study, we elucidated the effects of PDJ on phytochemical production in red leaf lettuce. The PDJ treatments promoted the accumulation of phenolic compounds in aerial plant parts. An LC-MS analysis revealed that these accumulated compounds were identified as cyanidin-3-O-glucoside, cyanidin-3-O-(6″-O-malonyl)-glucoside and cyanidin-3-O-(6″-O-malonyl)-glucoside methyl ester. The abundance of these compounds in lettuce extracts increased significantly in response to the PDJ treatment. Additionally, the LC-MS analysis also identified the accumulated phenolic compounds in the extracts of PDJ-treated lettuce, including caffeoyltartaric acid, chlorogenic acid, caffeoylmalic acid, chicoric acid, and dicaffeoylquinic acid. Gene expression analyses indicated the PDJ treatments upregulated the expression of PAL, F3H, and ANS genes in lettuce. These results suggest that PDJ treatments enhance the expression of genes involved in the synthesis of anthocyanins and phenolic compounds, resulting in an increase in the quantities of these compounds, which reportedly have various functions affecting human physiology.

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“…The compound has been identified to affect various biological processes similar to JAs (Huang et al, 2017). PDJ enhances the accumulation of anthocyanins in grapes and apples and improves handpicking efficiency for mandarin oranges (Ersin, 2015;Sato & Ikoma, 2016). PDJ also induces defense responses against common armyworm in corn (Mandour et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Inhibition of transpiration in rice by prohydrojasmon compared with that by commercially available microcrystalline and paraffin wax agents

Morino

Chiba

Umemura³

2021

Plant Production Science

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Prohydrojasmon (PDJ), a synthetic derivative of the plant hormone jasmonic acid, has been identified as a plant growth regulator used in various fruit and rice seedlings. In this study, we demonstrate the inhibition of transpiration by PDJ in the indica rice cultivar cv. Takanari compared with commercially available microcrystalline and paraffin wax agents in a greenhouse. Microcrystalline and paraffin wax agents inhibited approximately 30%-50% transpiration 3 h after application, and the inhibition lasted for seven days after treatment, depending on the concentration and the agent used. In contrast, PDJ inhibited approximately 40%-80% transpiration compared with control 0.5 h after treatment, and the effect lasted for one day. However, the effect almost disappeared 7 days after treatment. Thus, PDJ affects transpiration differently than commercially available products and could be used to lower excess transpiration in rice, specifically when an early, transient, and reversible inhibition is needed.

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Improvement in Handpicking Efficiency of Satsuma Mandarin Fruit with Combination Treatments of Gibberellin, Prohydrojasmon and Ethephon

Cited by 7 publications

References 11 publications

Post-harvest Application of Methyl Jasmonate or Prohydrojasmon Affects Color Development and Anthocyanins Biosynthesis in Peach by Regulation of Sucrose Metabolism

Post-harvest Application of Methyl Jasmonate or Prohydrojasmon Affects Color Development and Anthocyanins Biosynthesis in Peach by Regulation of Sucrose Metabolism

Prohydrojasmon Promotes the Accumulation of Phenolic Compounds in Red Leaf Lettuce

Inhibition of transpiration in rice by prohydrojasmon compared with that by commercially available microcrystalline and paraffin wax agents

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