scholarly journals Postharvest Quality of Cut Roses With the Application of Salicylic Acid

2018 ◽  
Vol 10 (8) ◽  
pp. 397
Author(s):  
Sérgio Miguel Mazaro ◽  
Edson Bertoldo ◽  
Nean Locatelli Dalacosta ◽  
Fabiana Chiamulera Borsatti ◽  
Mycheli Preuss da Cruz ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Defense Mechanisms ◽  
Phenylalanine Ammonia Lyase ◽  
Postharvest Quality ◽  
Fresh Matter ◽  
Leaf Chlorophyll ◽  
Biochemical Analyses ◽  
Stem Curvature ◽  
Lower Stem

The objective of this work was to evaluate the effect of the application of salicylic acid (SA) on the maintenance of quality and longevity of cut roses cv. Vega. Cut roses were kept in a vase solution of SA and water at concentrations of 0; 0.5; 1.0; 1.5 and 2.0 mM. All treatments were kept at 8±2 oC for 96 hours, simulating storage in flower shops; the flowers were then evaluated regarding loss of fresh matter and leaf chlorophyll content and were transferred to beakers containing distilled water at 25±2 ºC for more 144 hours, simulating shelf life. At 24, 48, 72 and 96 hours from the beginning of the experiment, biochemical analyses of total proteins and the activity of the phenylalanine ammonia-lyase (PAL) and peroxidases (PO) were performed. Visual analyses were performed (stem curvature, turgescence and petal darkening) every 48 hour intervals until the end of the experiment. The treatments with SA allowed the maintenance of post-harvest quality, reducing the loss of fresh matter mass, lower stem curvature, greater turgescence and less darkening of the petals. The results showed that the application of SA increased total protein contents and FAL, which characterizes the activation of plant defense mechanisms to the senescence process.

scholarly journals Influence of Preharvest Application of Salicylic Acid and Potassium Silicate on Postharvest Quality of Mango Fruits (Mangifera indica L.) cv. Alphonso

2020 ◽  
Vol 4 (4) ◽  
pp. 11-15
Author(s):  
Gonchikari Lokesh ◽  
C Madhumathi ◽  
M Rama Krishna ◽  
B Tanuja Priya ◽  
Lalitha Kadiri
Keyword(s):  
Salicylic Acid ◽  
Mangifera Indica ◽  
Potassium Silicate ◽  
Postharvest Quality

scholarly journals Effect of Carbon Dioxide on Anthocyanins, Phenylalanine Ammonia Lyase and Glucosyltransferase in the Arils of Stored Pomegranates

1998 ◽  
Vol 123 (1) ◽  
pp. 136-140 ◽  
Author(s):  
Deirdre M. Holcroft ◽  
Maria I. Gil ◽  
Adel A. Kader
Keyword(s):  
Carbon Dioxide ◽  
Phenylalanine Ammonia Lyase ◽  
Anthocyanin Biosynthesis ◽  
Punica Granatum ◽  
Quality Attributes ◽  
Postharvest Quality ◽  
Color Intensity ◽  
Red Color ◽  
Anthocyanin Concentration

`Wonderful' Pomegranates (Punica granatum L.) were placed in jars ventilated continuously with air or air enriched with 10 or 20 kPa CO2 at 10 °C for 6 weeks. Samples were taken initially and after 1, 2, 4, and 6 weeks, and postharvest quality attributes were measured. The arils of the pomegranates stored in air were deeper red than the initial controls and than those stored in CO2-enriched atmospheres. This increased color was associated with increased anthocyanin concentration. Arils from fruit stored in air enriched with 10 kPa CO2 had a lower anthocyanin concentration than air-stored fruit, and atmospheres enriched with 20 kPa CO2 had even lower levels, possibly from suppressed anthocyanin biosynthesis. Anthocyanin concentration correlated well with the activity of phenylalanine ammonia lyase but not with glucosyltransferase activity. Moderate CO2 atmospheres (10 kPa) prolong the storage life and maintain quality of pomegranates, including adequate red color intensity of the arils.

scholarly journals Salicylic acid (SA) addition influences postharvest quality of 'Jubileu' peaches (Prunus persica)

2018 ◽  
Vol 12 (05) ◽  
pp. 788-793
Author(s):  
Marines Batalha Moreno Kirinus ◽  
◽  
Caroline Farias Barreto ◽  
Pricila Santos da Silva ◽  
Paulo Celso de Mello Farias ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Prunus Persica ◽  
Postharvest Quality

Effect of 1-methylcyclopropene treatment on green asparagus quality during cold storage

2012 ◽  
Vol 26 (4) ◽  
pp. 407-411 ◽  
Author(s):  
Peng Zhang ◽  
Min Zhang ◽  
Shaojin Wang ◽  
Zhishuang Wu
Keyword(s):  
Cold Storage ◽  
Room Temperature ◽  
Phenylalanine Ammonia Lyase ◽  
Postharvest Quality ◽  
Significant Difference ◽  
C Decomposition ◽  
Concentration Levels ◽  
Green Asparagus ◽  
Long Storage

Abstract Green asparagus was treated with 1-methylcyclopropene at three concentration levels at room temperature for 24 h after harvest to evaluate the postharvest quality during cold storage at 4°C. Comparing with the controls, the loss of vitamin C, decomposition of chlorophyll, and accumulation of the malonydiadehyde under treatments of 1-methylcyclopropene were reduced during storage. The enzyme activities in asparagus including peroxidase and phenylalanine ammonia lyase were inhibited by 1-methylcyclopropene treatments, while the activity of superoxide dismutase was enhanced. Based on non-significant difference of the treated samples with 6 ìl l-1, 1-methylcyclopropene treatments at 4 ìl l-1 could be selected to maintain postharvest quality of green asparagus and provide long storage life.

scholarly journals Non-Chemical Treatments for the Pre- and Post-Harvest Elicitation of Defense Mechanisms in the Fungi–Avocado Pathosystem

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6819
Author(s):  
Juan Antonio Herrera-González ◽  
Silvia Bautista-Baños ◽  
Mario Serrano ◽  
Gianfranco Romanazzi ◽  
Porfirio Gutiérrez-Martínez
Keyword(s):  
Defense Mechanisms ◽  
Persea Americana ◽  
Postharvest Quality ◽  
Plant Tissues ◽  
Pathogenic Microorganisms ◽  
Chemical Treatments ◽  
Avocado Fruit ◽  
Important Disease

The greatest challenge for the avocado (Persea americana Miller) industry is to maintain the quality of the fruit to meet consumer requirements. Anthracnose is considered the most important disease in this industry, and it is caused by different species of the genus Colletotrichum, although other pathogens can be equally important. The defense mechanisms that fruit naturally uses can be triggered in response to the attack of pathogenic microorganisms and also by the application of exogenous elicitors in the form of GRAS compounds. The elicitors are recognized by receptors called PRRs, which are proteins located on the avocado fruit cell surface that have high affinity and specificity for PAMPs, MAMPs, and DAMPs. The activation of defense-signaling pathways depends on ethylene, salicylic, and jasmonic acids, and it occurs hours or days after PTI activation. These defense mechanisms aim to drive the pathogen to death. The application of essential oils, antagonists, volatile compounds, chitosan and silicon has been documented in vitro and on avocado fruit, showing some of them to have elicitor and fungicidal effects that are reflected in the postharvest quality of the fruit and a lower incidence of diseases. The main focus of these studies has been on anthracnose diseases. This review presents the most relevant advances in the use of natural compounds with antifungal and elicitor effects in plant tissues.

scholarly journals Acetylsalicylic acid increases postharvest longevity of ornamental sunflower inflorescence

2021 ◽  
Vol 42 (3Supl1) ◽  
pp. 1411-1420
Author(s):  
Ananda Covre da Silva ◽  
◽  
Helio Fernandes Ibanhes Neto ◽  
Ricardo Tadeu de Faria ◽  
Lúcia Sadayo Assari Takahashi ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Salicylic Acid ◽  
Acetylsalicylic Acid ◽  
Shelf Life ◽  
Analysis Of Variance ◽  
Maximum Dose ◽  
Postharvest Quality ◽  
Distilled Water ◽  
Postharvest Longevity

Sunflower to be used in ornamental floral arrangements need to be free from damage, and have longer shelf life. The aim of the present study was to evaluate the effect of acetylsalicylic acid (ASA) on the postharvest longevity of ornamental sunflower. Floral stems of the cultivar Vicent’s Choice from Sakata Seed were placed in flasks containing 350 mL of solution containing 0, 200, 400, 600, 800, or 1000 mg of ASA per liter of distilled water. Aspirin® (acetylsalicylic acid) tablets were used as the source of salicylic acid. Grades from 0 to 5 were assigned every day, according to a pre-established criteria for assessing the longevity and quality of the inflorescences. The data were subjected to analysis of variance, Tukey’s test (t = 0.05%), and regression analysis using Sisvar program. Significant differences were observed in the grades from the sixth to the tenth day of treatment, but not in the total longevity. Treatment with 400 mg L-1 of ASA improved the commercial longevity to an average of 9 days, about 4 days more than the control (0 mg L-1). At 400 mg L-1 dose, ASA prolongs the commercial longevity and maintains the postharvest quality of ornamental sunflower stems. However, at the maximum dose used (1000 mg L-1), the evaluated parameters did not show any improvement over the controls.

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