Control of stem bending in cut gerbera flowers through application of dithiothreitol and thioglycolic acid as wound reaction inhibitors

Gerabeygi, Khadijeh; Roein, Zeynab; Rezvanipour, Shirin

doi:10.1080/14620316.2021.1887768

Cited by 5 publications

(8 citation statements)

References 29 publications

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“…One possible explanation for the enhancement of water uptake is that CNTs' passive transport is facilitated by their size, charge characteristics (predominantly negative), and interactions with lipids 62 , 64 . Following wounding in cut flower stem, the wound-induced responses activate and deposition of polyphenolic compounds, including lignin (which causes vascular occlusion), at the site of the wound occurred 65 , 66 .…”

Section: Discussionmentioning

confidence: 99%

Multi-walled carbon nanotubes wrapped with polyvinylpyrrolidone can control the leaf yellowing of Alstroemeria cut flowers

Mousavi

Roein

Hekmatara

2022

Sci Rep

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The rapid yellowing of the leaves on cut flowers with leafy stems severely limits their vase life and commercial value. In this study, the effect of a composite of multi-walled carbon nanotubes (MWCNTs) and polyvinyl pyrrolidone (PVP) on the longevity of cut Alstroemeria flowers (Alstroemeria hybrida) was investigated to obtain a solution to this problem. A range of MWCNTs/PVP composite concentrations (0, 3, 6, and 9 mg L−1) was applied in a vase solution (for 24 h) as pulse treatments. Our findings indicate that the composite of MWCNTs and PVP exhibits excellent dispersibility in a vase solution. The results demonstrate that a 3 mg L−1 MWCNTs/PVP concentration was the most effective, extending the vase life of cut Alstroemeria flowers by up to 27 days. Pulsing with MWCNTs/PVP delayed the onset of floret abscission and leaf yellowing by 5 and 18 days, respectively. Additionally, when MWCNTs/PVP solution was applied to cut stems, water uptake remained consistently greater than that of the control. Additionally, MWCNTs/PVP increased the total chlorophyll content, soluble protein content, and POX enzyme activity of leaves while decreasing the malondialdehyde (MDA) content. The results indicate that this composite exhibited antimicrobial activity against gram-positive and -negative bacteria, particularly at a concentration of 3 mg L−1. This study demonstrated that adding MWCNTs/PVP to a vase solution of Alstroemeria cut flowers increased their longevity with minimal leaf yellowing symptoms compared to untreated cut stems. As a result, this nanocomposite can be used safely and effectively in vase solutions and in combination with other preservatives.

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Section: Discussionmentioning

confidence: 99%

Multi-walled carbon nanotubes wrapped with polyvinylpyrrolidone can control the leaf yellowing of Alstroemeria cut flowers

Mousavi

Roein

Hekmatara

2022

Sci Rep

Self Cite

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“…Normally, cutting is the first step in the postharvest management of cut flowers. However, when cut from their parent plants and placed in a vase solution, flowers experience both wounding stress and water stress followed by increased activity of antioxidant enzymes for neutralizing the damaging effects of reactive oxygen species [1]. Wounding stress leads to various physiological and biochemical defense mechanisms that involve a series of reactions, i.e., the synthesis of membrane-degrading proteins and free radicals, hormone signal transduction, structural changes in the cell wall, changes in the level of phyto-hormones and antioxidants, the accumulation and deposition of secondary metabolic compounds [6], an outburst of reactive oxygen species, and controlled cell death.…”

Section: Woundingmentioning

confidence: 99%

“…An enzyme inhibitor is a specific ion or small molecule that binds to an enzyme, reducing its activity. Inhibition of enzyme activity is known to be a major mechanism for controlling enzyme action [1] (Table 1). As blockage/occlusion involves oxidative reactions, it can be inhibited through antioxidant treatments [22].…”

Section: Effect Of Chemical Inhibitors On Enzyme Activitymentioning

confidence: 99%

“…The mechanical wounding of a cut stem leads to increased expression of many oxidative enzymes, such as phenoloxidase, peroxidase, PAL [1], etc. PAL catalyzes the first and most important step in the phenylpropanoid pathway that produces lignin, flavonoids, and anthocyanin [16], and it is considered one of the main regulatory enzymes in wound reaction [6].…”

Section: Enzyme Chemical Inhibitor Referencementioning

confidence: 99%

“…The plant vascular system is composed of xylem and phloem vessels. Xylem consists of tracheid elements and dead vessels that transport nutrients and water from roots to photosynthetic organs [1]. An uninterrupted supply of water through these cells provides hydraulic support to the stems of cut flowers [2].…”

Section: Introductionmentioning

confidence: 99%

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Postharvest Chemical Treatment of Physiologically Induced Stem End Blockage Improves Vase Life and Water Relation of Cut Flowers

Manzoor,

Bashir,

Naveed

et al. 2024

Horticulturae

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Wound-induced xylem occlusion significantly affects the vase life of cut flowers, as oxidative stress and the polymerization of phenolic compounds lead to the deposition of phenolic compounds/secondary metabolites in the stem ends of cut flowers to heal open tissues of freshly cut stems and prevent microbial invasion. However, this deposition causes blockage of vessels, reduced water uptake, and shortened vase life. The physiological plugging of vessels is linked with various oxidative enzymes’ (PAL, PPOs, LACs, and COs) actions taken to increase the synthesis of different compounds, e.g., lignin, suberin, tyloses, gel, and latex, in wounded areas. The use of chemical preservatives/enzyme inhibitors is one of the safest and most efficient techniques employed to minimize vascular blockage and inhibit phenolic compounds deposition and exudation. This review mainly discusses the types of oxidative enzymes, their pathways and biochemistry along with production of secondary metabolites, their biosynthesis, and their modes of action involved in vascular blockage. It also summarizes the different types of preservatives used in postharvest treatments to improve relative water uptake, flower fresh weight, petal protein content, and hydraulic conductance and prolong the vase life of cut flowers during storage. It is hoped that this elaborate study will help researchers in designing new studies concerning occlusion caused by the accumulation of phenolic compounds in vessels.

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Impact of Gibberellic Acid and Calcium Chloride Treatments on Neck Bending Prevention and Vase Life Extension of Gerbera Cut Flowers

Mohammadi,

Ranjbar,

Eghlima

2023

J Plant Growth Regul

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Control of stem bending in cut gerbera flowers through application of dithiothreitol and thioglycolic acid as wound reaction inhibitors

Cited by 5 publications

References 29 publications

Multi-walled carbon nanotubes wrapped with polyvinylpyrrolidone can control the leaf yellowing of Alstroemeria cut flowers

Multi-walled carbon nanotubes wrapped with polyvinylpyrrolidone can control the leaf yellowing of Alstroemeria cut flowers

Postharvest Chemical Treatment of Physiologically Induced Stem End Blockage Improves Vase Life and Water Relation of Cut Flowers

Impact of Gibberellic Acid and Calcium Chloride Treatments on Neck Bending Prevention and Vase Life Extension of Gerbera Cut Flowers

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