Effect of 8-Hydroxyquinoline Citrate, Sucrose and Peroxidase Inhibitors on Vase Life of Lisianthus (<i>EUSTOMA GRANDIFLORUM</i> L.) Cut Flowers

Sharifzadeh, K.; Asil, Moazzam Hassanpour; Roein, Zeynab; Sharifzadeh, Muhammad

doi:10.2478/johr-2014-0005

Cited by 8 publications

(7 citation statements)

References 33 publications

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“…All these factors have been found to play a role in lisianthus. Reports on biocides capable of prolonging the lisianthus vase life by assuring uninterrupted water transport in cut stems include 8-hydroxyquinolite citrate [3,4,[9][10][11], aluminum sulfate [2], sodium hypochlorite [7,9], silver nitrate [9], nanosilver [12,13], nanoparticles of silicon and silver [14], and peracetic acid [15]. All of these efficiently limit the microbial population in vase water and prolong the vase life, especially when applied with sucrose.…”

Section: Introductionmentioning

confidence: 99%

Effects of Postharvest Treatments with Nanosilver on Senescence of Cut Lisianthus (Eustoma grandiflorum (Raf.) Shinn.) Flowers

2021

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Lisianthus is among the most popular cut flowers. Regarding the postharvest losses, these experiments were designed to compare the effects of a nanosilver (NS) based preservative to the standard preservative containing 8-hydroxyquinoline citrate (8-HQC) and sucrose (S). Additionally, the effect of 24 h conditioning in the NS solution on the postharvest longevity and the general condition of lisianthus (Eustoma grandiflorum ‘Mariachi Blue’) was tested. The vase life of flowers on conditioned and non-conditioned stems was extended by the preservatives, more so by NS + S than by 8-HQC + S (44–54% versus 13–23%). Conditioning had no detectable effect on longevity. Daily water uptake showed alternative peaks and drops, with a general tendency of the uptake rate to decrease over time. The highest uptake intensity and the highest transpiration rate were in stems in the NS + S solution while the lowest was in 8-HQC + S. Conditioning negatively affected the average fresh weight of the flowering stems in all holding solutions with stems in preservatives being heavier than those in water. Preservatives did not induce accumulation of the total soluble or reducing sugars in petals; such accumulation was promoted by conditioning, but only in the upper flowers. The free proline content increased in senescing lower flowers on non-conditioned stems; conditioning limited this increase in flowers in preservatives. In the upper flowers, free proline increased in both water controls while the preservatives and conditioning generally reduced the proline contents below the initial level. Conditioning lowered the hydrogen peroxide contents in senescing lower flowers, relative to the initial level and the non-conditioned stems. The catalase activity kept dropping during the vase life in both the lower and upper flowers, in conditioned and non-conditioned stems, with the exception of flowers from water where the activity remained the highest from all three treatments. It appears that the NS preservative with sucrose improves the overall condition of lisianthus flowers and extends their vase life.

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Section: Introductionmentioning

confidence: 99%

Effects of Postharvest Treatments with Nanosilver on Senescence of Cut Lisianthus (Eustoma grandiflorum (Raf.) Shinn.) Flowers

2021

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“…PODs exist in two main isoenzymatic forms, namely, anionic (acidic) and cationic (basic), based on their isoelectric points. Both forms are involved in the lignification and suberization process [37]. High temperature reduces the activities of these enzymes as they have protein structures and high temperature destroys those structures [10].…”

Section: Peroxidase Enzymes (Prxs)mentioning

confidence: 99%

“…In rose (Rosa hybrida) cut flowers, increased peroxidase activity leads to reduced anthocyanin content, browning, and the de-coloration of petals [51]. POD inhibitors function by blocking the activities of iosenzymatic forms that are involved in lignin and suberin accumulation [37]. The peroxidase inhibitor catechol (1,2-dihydroxybenzene) in combination with 8-HQC significantly reduced xylem blockage in gerbera (Gerbera jamesonii) [14].…”

Section: Peroxidase Enzymes (Prxs)mentioning

confidence: 99%

“…The peroxidase inhibitor catechol (1,2-dihydroxybenzene) in combination with 8-HQC significantly reduced xylem blockage in gerbera (Gerbera jamesonii) [14]. Hydroquinone (p-benzenediol) delayed wilting in Astilbe × arendsii flowers and 2-mercaptoethanol in bird of paradise (Strelitzia reginae) by inhibiting peroxidase activity [32,36], while amitrol (3-Amino-1,2,4-triazole) enhanced the vase life of Geraldton waxflower (Chamelaucium uncinatum) by improving water relation [29], and copper sulphate increased the vase life of lisianthus (Eustoma grandiflorum) by up to 4 days by increasing antioxidant enzyme (SOD and CAT) activities [59].…”

Section: Peroxidase Enzymes (Prxs)mentioning

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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“…Lisianthus (Eustoma grandiflorum) is a major cut flower from the family Gentianaceae (Saeedi et al, 2015). Cut lisianthus flowers exhibit short vase life due to their susceptibility to ethylene (Ichimura et al, 1998) and xylem blockage (Sharifzadeh et al, 2014). , the production of lisianthus cut flowers in Japan, Europe and the United States was reported at 129, 122 and 14 million branches, respectively (Harbaugh, 2007).…”

Section: Introductionmentioning

confidence: 99%

Cerium nitrate and salicylic acid on vase life, lipid peroxidation, and antioxidant enzymes activity in cut lisianthus flowers

2020

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Lisianthus is a major cut flower, but it has a short vase life. To prolong postharvest longevity and improve quantitative and qualitative traits of cut lisianthus flowers, an experiment was conducted on the basis of a Completely Randomized Design with eight treatments on 120 flower sprays in three replications. The experimental treatments included salicylic acid (SA) at the rates of 50, 100 and 200 mg L-1, cerium nitrate [Ce(NO3)3] at the rates of 20, 40, 80, and 200 μM, and control (distilled water). The results revealed that the flowers treated with 40 μM Ce(NO3)3 and those treated with 100 mg L-1 SA had the longest vase life of 15.42 and 15.20 days, respectively. Also, these treatments were most effective in improving water uptake, reducing microbial load at the stem end, and enhancing petals’ protein content. The lowest malondialdehyde (18.65 nmol g-1fresh weight) was related to the treatment of 40 μM Ce(NO3)3 and 100 mg L-1 SA. These treatments showed the lowest polyphenol oxidase (PPO) activity, too. The activity of ascorbate peroxidase (APX) and peroxidase (POD) antioxidant enzymes was significantly higher in the flowers treated with 40 μM Ce(NO3)3 and 100 mg L-1 SA. The treatment of 200 mg L-1 SA had negative effects on all the recorded traits. So, it can be concluded that the treatment of cut lisianthus flowers with 40 μM Ce(NO3)3 and 100 mg L-1 SA can prolong their postharvest longevity by reducing lipid peroxidation and increasing the activity of antioxidant enzymes.

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Effect of 8-Hydroxyquinoline Citrate, Sucrose and Peroxidase Inhibitors on Vase Life of Lisianthus (EUSTOMA GRANDIFLORUM L.) Cut Flowers

Cited by 8 publications

References 33 publications

Effects of Postharvest Treatments with Nanosilver on Senescence of Cut Lisianthus (Eustoma grandiflorum (Raf.) Shinn.) Flowers

Effects of Postharvest Treatments with Nanosilver on Senescence of Cut Lisianthus (Eustoma grandiflorum (Raf.) Shinn.) Flowers

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

Cerium nitrate and salicylic acid on vase life, lipid peroxidation, and antioxidant enzymes activity in cut lisianthus flowers

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