Effect of gibberellic acid on the vase life and oxidative activities in senescing cut gladiolus flowers

Tariq, Saeed; Imran, Hassan; Abbasi, Nadeem Akhtar; Jilani, Ghulam

doi:10.1007/s10725-013-9839-y

Cited by 63 publications

(40 citation statements)

References 23 publications

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“…However, Ezhilmathi et al (2007) reported a continuous decrease in the CAT activity right from the bud to senescent stage in the flowers of gladiolus. Activities of SOD and CAT exhibit the stabilizing effects on lipid bilayer and membranous system and their higher ROS scavenging activity eliminates oxidative stress from flowers and prevents the oxidation of unsaturated fatty acids (Saeed et al 2014). Our results revealed a steady increase in the APX activity towards flower opening and a significant decrease towards senescence.…”

Section: Discussionmentioning

confidence: 51%

“…Senescence in plants or plant parts is often marked by the abundant generation of ROS like superoxides (O 2 -) and hydrogen peroxides (H 2 O 2 ) by cells (Dhindsa et al 1981;Ezhilmathi et al 2007;Saeed et al 2014). To prevent plants from this damage, plant cells employ various scavenging enzymes like SOD, CAT and APX by activating specific signaling pathways (Kou et al 2014).…”

Section: Discussionmentioning

confidence: 99%

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Increased oxidative stress, lipid peroxidation and protein degradation trigger senescence in Iris versicolor L. flowers

Ahmad

Tahir

2016

Physiol Mol Biol Plants

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Dynamics in various physiological and biochemical aspects were studied during various stages (Itight bud stage to VI-senescent stage) of flower development in Iris versicolor. Floral diameter, fresh & dry mass and water content increased during flower opening and decreased towards senescence. Senescence was found to be related to the increased lipid peroxidation which was reflected in the decreased membrane stability index towards senescence. This increase in the lipid peroxidation was probably initiated by increased lipoxygenase activity which shot up just prior to the increase in lipid peroxidation. Soluble protein content showed a marginal decrease towards senescence with a corresponding increase in specific protease activity. Sugar fractions and a-amino acids showed a significant decrease towards senescence. Superoxide dismutase and ascorbate peroxidase activity increased as the flowers opened and thereafter a significant decrease was registered towards senescence. Catalase activity improved as the flower matures, but decreased prior to flower opening through senescence. The protein patterns from the tepal tissues resolved through electrophoresis showed a consistency in proteins upto the flower opening but a marginal decrease was registered in both high and low molecular weight proteins towards senescence. However, a protein of molecular weight 76.5 kDa showed up during senescent stages which may have a role in flower senescence.

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Section: Discussionmentioning

confidence: 51%

Section: Discussionmentioning

confidence: 99%

Increased oxidative stress, lipid peroxidation and protein degradation trigger senescence in Iris versicolor L. flowers

Ahmad

Tahir

2016

Physiol Mol Biol Plants

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“…According to Hunter et al (2004), the senescence rate can be changed with a variation in the relative concentrations of GA 3 and ABA in the flower tissue. The GA 3 at 25 mg•L -1 in vase solution contributed to the increased longevity of gladiolus flowers (Saeed et al 2014). …”

Section: Stem Longevitymentioning

confidence: 99%

“…It is known that GA 3 contributes to the maintenance and preservation of cell membrane stability, inhibiting mainly membrane proteases (Saeed et al 2014). Ezhilmathi et al (2007), in an experiment with the antioxidant 5-sulfosalicylic, found an increase in water uptake and decrease in water transpiration rate, attributed to elevated cell membrane stability and low level of reactive oxygen species.…”

Section: Water Uptake and Transpiration Ratementioning

confidence: 99%

“…Also in gladiolus, Kumar and Gupta (2014) observed increased water uptake, delayed opening of basal flower, more florets open for stems, and prolonged longevity when flowers were dipped into or sprayed with 100 ppm gibberellic acid. Saeed et al (2014) reported that GA 3 at the concentration of 25 mg•L -1 , in vase solution, contributed to increase the fresh weight and longevity of cut gladiolus stems.…”

Section: Lc Costa Et Al Introductionmentioning

confidence: 99%

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Action of abscisic and gibberellic acids on senescence of cut gladiolus flowers

et al. 2016

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AbstrAct:The gladiolus flower is classified as insensitive to ethylene.Thus, the signals that initiate senescence are poorly understood. This study evaluated the role of abscisic and gibberellic acids on postharvest senescence of 3 cultivars of cut gladiolus flowers (Gladiolus grandiflora Hort.). Stalks were harvested and placed in test tube containing 100 mL distilled water or an aqueous solution of abscisic acid (100 and 150 µM ABA), gibberellic acid (100 µM GA 3 ), and fluridone (1 mM) for 24 h. Subsequently, flower stalks were placed in a test tube with distilled water, and the following variables were determined: stem longevity, fresh weight change, water uptake rate and transpiration rate during

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Gibberellic Acid: A Versatile Regulator of Plant Growth, Development and Stress Responses

Shah

Islam

Mohammad

et al. 2023

J Plant Growth Regul

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Effect of gibberellic acid on the vase life and oxidative activities in senescing cut gladiolus flowers

Cited by 63 publications

References 23 publications

Increased oxidative stress, lipid peroxidation and protein degradation trigger senescence in Iris versicolor L. flowers

Increased oxidative stress, lipid peroxidation and protein degradation trigger senescence in Iris versicolor L. flowers

Action of abscisic and gibberellic acids on senescence of cut gladiolus flowers

Gibberellic Acid: A Versatile Regulator of Plant Growth, Development and Stress Responses

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