Effect of methyl jasmonate on wound healing and resistance in fresh-cut potato cubes

The objective of this study was to determine if treatment with methyl jasmonate (MJ), a naturally occurring substance, would extend the shelf life of tomato slices, specifically when slices were cut from fruit previously treated with this natural product. Tomatoes were harvested at breaker stage. The fruit were divided into four lots. The first three lots were treated with MJ right after harvest at the breaker stage. Fruit from the first lot were sliced immediately after MJ treatment. Fruit from the second lot were placed at 20 °C and allowed to ripen to red stage before slicing. Fruit from the third lot were treated the same way as those in the second lot except they received an additional MJ treatment just before slicing. Fruit from the fourth lot were placed at 20 °C and allowed to ripen to red stage before MJ treatment and slicing. Each lot also included an untreated control. MJ treatments were carried out in 200-L airtight containers. MJ was spotted onto filter paper at final vapor concentration of 10-5 M. Fruit were cut with a meat slicer to obtain slices with 5-mm thickness. Slices were placed in 1-L clear plastic trays with lids and stored at 5 °C. Samples were transferred daily from 5 to 20 °C for evaluation. Fresh-cut tomatoes treated with MJ and sliced at breaker stage (lot 1) had less decay, better quality, and longer shelf life than the untreated slices. However, no differences were found between the control slices and treated slices at the red stage regardless the time of MJ treatment and whether or not additional MJ treatments were applied (lots 2, 3 & 4). The results indicate that the effectiveness of MJ in reducing decay and maintaining quality is affected by the stages of ripeness of tomatoes and the types of decay.

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Ascorbic acid treatment inhibits wound healing of fresh-cut potato strips by controlling phenylpropanoid metabolism

Postharvest Biology and Technology ◽

10.1016/j.postharvbio.2021.111644 ◽

2021 ◽

Vol 181 ◽

pp. 111644

Author(s):

Fuhui Zhou ◽

Dongying Xu ◽

Chenghui Liu ◽

Chen Chen ◽

Mixia Tian ◽

...

Keyword(s):

Wound Healing ◽

Ascorbic Acid ◽

Acid Treatment ◽

Phenylpropanoid Metabolism ◽

Fresh Cut

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096 Disease Incidence in Fresh-cut Peony Flowers after Long-term Cold Storage

HortScience ◽

10.21273/hortsci.35.3.405c ◽

2000 ◽

Vol 35 (3) ◽

pp. 405C-405

Author(s):

Karen L.B. Gast

Keyword(s):

Disease Prevention ◽

Methyl Jasmonate ◽

Calcium Chloride ◽

Cold Storage ◽

Storage Temperature ◽

Disease Incidence ◽

Vase Life ◽

Flower Bud ◽

Fresh Cut

Fresh-cut peonies are one of few cut flowers that can be stored for weeks and still provide a marketable flower. Peonies are usually marketed by color: reds, pinks, whites, and corals. Several different cultivars may be included in each color depending on their country of origin and time during the harvest season. Previous work with peonies has shown that different cultivars of the same color may behave differently during postharvest handling, whether it is storage life, vase life, opening time, storage temperature, etc. One problem of long-term cold storage is diseases that may render flowers unmarketable. This study evaluated the effect of four storage disease prevention treatments on seven peony cultivars, two reds, two pinks, and three whites, stored at 1 °C. The four disease prevention treatments included a control, methyl jasmonate during storage, a pre-storage calcium chloride pulsing for 2 h at room temperature, and a pre-storage fungicide spray. Flowers were evaluated for disease incidence on leaves and flowers, and for flower bud openness after 4, 8, and 12 weeks of cold storage. Overall results support previous work that shows peony cultivars react differently to postharvest treatments. Two cultivars were greatly affected by the disease prevention treatments and three were moderately affected, while there were few treatment effects seen with the other two. The calcium chloride pulse produced the greatest disease incidence and resulted in the flowers being more opening, which is not desirable. There was often no difference in the control, methyl jasmonate, and fungicide treatments. It appears that pre-storage treatments may not be beneficial for some fresh-cut peony cultivars.

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METHYL JASMONATE AND LONG TERM STORAGE OF FRESH CUT PEONY FLOWERS

Acta Horticulturae ◽

10.17660/actahortic.2001.543.39 ◽

2001 ◽

pp. 327-330 ◽

Cited By ~ 7

Author(s):

K. Gast

Keyword(s):

Methyl Jasmonate ◽

Long Term Storage ◽

Fresh Cut ◽

Term Storage

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Methyl Jasmonate Extends Shelf Life and Reduces Microbial Contamination of Fresh-Cut Celery and Peppers

Journal of Agricultural and Food Chemistry ◽

10.1021/jf9707492 ◽

1998 ◽

Vol 46 (4) ◽

pp. 1253-1256 ◽

Cited By ~ 55

Author(s):

J. George Buta ◽

Harold E. Moline

Keyword(s):

Shelf Life ◽

Methyl Jasmonate ◽

Microbial Contamination ◽

Fresh Cut

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Methyl jasmonate promotes wound healing by activation of phenylpropanoid metabolism in harvested kiwifruit

Postharvest Biology and Technology ◽

10.1016/j.postharvbio.2021.111472 ◽

2021 ◽

Vol 175 ◽

pp. 111472

Author(s):

xiaobo Wei ◽

weiliang Guan ◽

yajie Yang ◽

yelin Shao ◽

linchun Mao

Keyword(s):

Wound Healing ◽

Methyl Jasmonate ◽

Phenylpropanoid Metabolism

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Methyl jasmonate effects on sugarbeet root responses to postharvest dehydration

PeerJ ◽

10.7717/peerj.11623 ◽

2021 ◽

Vol 9 ◽

pp. e11623

Author(s):

Fernando L. Finger ◽

John D. Eide ◽

Abbas M. Lafta ◽

Mohamed F.R. Khan ◽

Munevver Dogramaci ◽

...

Keyword(s):

Weight Loss ◽

Wound Healing ◽

Methyl Jasmonate ◽

Respiration Rate ◽

Storage Conditions ◽

Proline Accumulation ◽

Root Weight ◽

Proline Metabolism ◽

Storage Losses ◽

Meja Treatment

Background Sugarbeet (Beta vulgaris L.) roots are stored under conditions that cause roots to dehydrate, which increases postharvest losses. Although exogenous jasmonate applications can reduce drought stress in intact plants, their ability to alleviate the effects of dehydration in postharvest sugarbeet roots or other stored plant products is unknown. Research was conducted to determine whether jasmonate treatment could mitigate physiological responses to dehydration in postharvest sugarbeet roots. Methods Freshly harvested sugarbeet roots were treated with 10 µM methyl jasmonate (MeJA) or water and stored under dehydrating and non-dehydrating storage conditions. Changes in fresh weight, respiration rate, wound healing, leaf regrowth, and proline metabolism of treated roots were investigated throughout eight weeks in storage. Results Dehydrating storage conditions increased root weight loss, respiration rate, and proline accumulation and prevented leaf regrowth from the root crown. Under dehydrating conditions, MeJA treatment reduced root respiration rate, but only in severely dehydrated roots. MeJA treatment also hastened wound-healing, but only in the late stages of barrier formation. MeJA treatment did not impact root weight loss or proline accumulation under dehydrating conditions or leaf regrowth under non-dehydrating conditions. Both dehydration and MeJA treatment affected expression of genes involved in proline metabolism. In dehydrated roots, proline dehydrogenase expression declined 340-fold, suggesting that dehydration-induced proline accumulation was governed by reducing proline degradation. MeJA treatment altered proline biosynthetic and catabolic gene expression, with greatest effect in non-dehydrated roots. Overall, MeJA treatment alleviated physiological manifestations of dehydration stress in stored roots, although the beneficial effects were small. Postharvest jasmonate applications, therefore, are unlikely to significantly reduce dehydration-related storage losses in sugarbeet roots.

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