BOUGAINVILLEA POST-PRODUCTION: NAA AND STS CONTROL OF BRACT ABSCISSION IS SUBJECT TO EXOGENOUS ETHYLENE

2001 ◽  
pp. 47-53
Author(s):  
M.L.G. Custódia ◽  
J.A. Monteiro ◽  
M.H. Rodrigues
Keyword(s):  
Post Production ◽  
Exogenous Ethylene

scholarly journals Sensitivity of ornamental pepper to ethylene

2019 ◽  
Vol 37 (4) ◽  
pp. 458-463 ◽  
Author(s):  
Wellington S Ribeiro ◽  
Clebson dos S Carneiro ◽  
Christiane de Fátima M França ◽  
Cleide Maria F Pinto ◽  
Paula Cristina C Lima ◽  
...  
Keyword(s):  
Leaf Abscission ◽  
Germplasm Bank ◽  
Breeding Programs ◽  
Ethylene Sensitivity ◽  
Early Appearance ◽  
Highly Sensitive ◽  
Post Production ◽  
Exogenous Ethylene ◽  
Genus Capsicum ◽  
Pepper Plants

ABSTRACT The genus Capsicum has varying levels of sensitivity to ethylene. Variability knowledge allows planning post-production methodologies of potted pepper plants and can be used in breeding programs. The objective of this study was to evaluate the ethylene sensitivity of three ornamental pepper genotypes of the germplasm bank of Universidade Federal de Viçosa. Pepper plants were exposed to 10 μL L-1 ethylene during 48 hours. The flowers were highly sensitive to exogenous ethylene in all genotypes except Pimenta colorida which was moderately sensitive. Regarding leaf abscission, Pimenta colorida and Pimentão ornamental are classified as highly sensitive to ethylene application. Already the fruits responded with the early appearance of the typical coloration when ripe, except for Pimenta laranja. When fruits fell, the highest rates were observed for green fruits, followed by ripe green and ripe fruits.

scholarly journals 1-MCP efficiency in quality of ornamental peppers

2018 ◽  
Vol 36 (4) ◽  
pp. 510-514 ◽  
Author(s):  
Wellington S Ribeiro ◽  
Clebson dos S Carneiro ◽  
Christiane de Fátima M França ◽  
Cleide Maria F Pinto ◽  
Paula Cristina C Lima ◽  
...  
Keyword(s):  
Shelf Life ◽  
Capsicum Annuum ◽  
Ornamental Plants ◽  
Production Quality ◽  
Ethylene Action ◽  
Post Production ◽  
Pre Treatment ◽  
Exogenous Ethylene

ABSTRACT 1-MCP has been effectively used as an antagonist of ethylene deleterious actions in flowers and ornamental plants. The objective was to evaluate the efficiency of 1-MCP (0.0, 0.5, 1.0 and 1.5 g m-3) in maintaining post-production quality of exogenous ethylene sensitive ornamental pepper. Two commercial varieties were evaluated: Pimenta Colorida and Pimentão Ornamental, both Capsicum annuum. The pre-treatment with 1-MCP, regardless of the applied concentration, was effective in blocking the ethylene action reducing the leaves abscission, flowers and fruits of both genotypes by 100%. Plants pretreated with 1-MCP had postproduction life increased by eight and nine days for Pimenta Colorida and Pimentão Ornamental, respectively. The 1-MCP application at the concentration of 1.0 g m-3 is efficient in maintaining ornamental quality and prolonging the shelf life of Pimenta Colorida and Pimentão Ornamental.

scholarly journals Ethylene and 1-methylcyclopropene action over senescence of nasturtium flowers

2015 ◽  
Vol 33 (4) ◽  
pp. 453-458 ◽  
Author(s):  
Tania P Silva ◽  
Fernando L Finger
Keyword(s):  
Floral Development ◽  
Development Stage ◽  
Flower Senescence ◽  
Premature Senescence ◽  
Flower Opening ◽  
Development Stages ◽  
Post Harvest ◽  
The Third ◽  
Exogenous Ethylene ◽  
Floral Bud

ABSTRACT: This work describes ethylene and 1-methylcyclopropene (1-MCP) action on post-harvest shelf life of four development stages of nasturtium flowers. To reach this goal, we carried out three experiments. In the first and second experiments, we studied five ethylene (0; 0.1; 1; 10; 100 and 1000 μL/L) and three 1-MCP concentrations (0.25; 0.5 and 0.75 μL/L), respectively. In the third experiment, 1-MCP was followed by combined with ethylene (only 1-MCP; only ethylene; and 24 hours of exposure to 0.75 μL/L 1-MCP followed by 24 hours of exposure to 100 μL/L ethylene). All experiments had two control treatments, one keeping non-exposed flowers inside and another outside exposure chambers. Experiments were set in factorial design, in complete blocks at random, with four 10-flower replications each. Flower senescence was determined by a pre-established visual scale and by observing floral bud development. Ethylene dose above 10 μL/L induced flower wilting and premature senescence from the second floral development stage. Furthermore, higher concentrations of exogenous ethylene promoted irregular flower opening and/or morphological abnormalities in opened flowers. 1-MCP effectively extended post-harvest longevity of nasturtium flowers, independent of the concentration and even in the presence of exogenous ethylene.

scholarly journals Stablization of ACOs by NatB mediated N-terminal acetylation is required for ethylene homeostasis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hai-qing Liu ◽  
Ya-jie Zou ◽  
Xiao-feng Li ◽  
Lei Wu ◽  
Guang-qin Guo
Keyword(s):  
Protein Modification ◽  
Normal Growth ◽  
Ethylene Biosynthesis ◽  
Regulation Mechanism ◽  
Biological Functions ◽  
Loss Of Function ◽  
Auxiliary Subunit ◽  
Ethylene Content ◽  
Endogenous Ethylene ◽  
Exogenous Ethylene

AbstractN-terminal acetylation (NTA) is a highly abundant protein modification catalyzed by N-terminal acetyltransferases (NATs) in eukaryotes. However, the plant NATs and their biological functions have been poorly explored. Here we reveal that loss of function of CKRC3 and NBC-1, the auxiliary subunit (Naa25) and catalytic subunit (Naa20) of Arabidopsis NatB, respectively, led to defects in skotomorphogenesis and triple responses of ethylene. Proteome profiling and WB test revealed that the 1-amincyclopropane-1-carboxylate oxidase (ACO, catalyzing the last step of ethylene biosynthesis pathway) activity was significantly down-regulated in natb mutants, leading to reduced endogenous ethylene content. The defective phenotypes could be fully rescued by application of exogenous ethylene, but less by its precursor ACC. The present results reveal a previously unknown regulation mechanism at the co-translational protein level for ethylene homeostasis, in which the NatB-mediated NTA of ACOs render them an intracellular stability to maintain ethylene homeostasis for normal growth and responses.

scholarly journals Ethylene Sensor-Enabled Dynamic Monitoring and Multi-Strategies Control for Quality Management of Fruit Cold Chain Logistics

Sensors ◽  
2020 ◽  
Vol 20 (20) ◽  
pp. 5830
Author(s):  
Xuepei Wang ◽  
Xinwu Li ◽  
Daqi Fu ◽  
Rajko Vidrih ◽  
Xiaoshuan Zhang
Keyword(s):  
Quality Management ◽  
Control Strategies ◽  
Response Speed ◽  
Chromatic Aberration ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Cold Chain ◽  
Dynamic Monitoring ◽  
Quality Loss ◽  
Exogenous Ethylene

Due to the presence of bioactive compounds, fruits are an essential part of people’s healthy diet. However, endogenous ethylene produced by climacteric fruits and exogenous ethylene in the microenvironment could play a pivotal role in the physiological and metabolic activities, leading to quality losses during storage or shelf life. Moreover, due to the variety of fruits and complex scenarios, different ethylene control strategies need to be adapted to improve the marketability of fruits and maintain their high quality. Therefore, this study proposed an ethylene dynamic monitoring based on multi-strategies control to reduce the post-harvest quality loss of fruits, which was evaluated here for blueberries, sweet cherries, and apples. The results showed that the ethylene dynamic monitoring had rapid static/dynamic response speed (2 ppm/s) and accurately monitoring of ethylene content (99% accuracy). In addition, the quality parameters evolution (firmness, soluble solids contents, weight loss rate, and chromatic aberration) showed that the ethylene multi-strategies control could effectively reduce the quality loss of fruits studied, which showed great potential in improving the quality management of fruits in the supply chain.

Chemical composition determines the bioenergy potential of food waste from pre- and post-production

2021 ◽  
Author(s):  
Beatriz Salustiano Pereira ◽  
Raíssa Nobre Castrisana ◽  
Caroline de Freitas ◽  
Jonas Contiero ◽  
Michel Brienzo
Keyword(s):  
Chemical Composition ◽  
Food Waste ◽  
Post Production

scholarly journals Ethylene enhances root water transport and aquaporin expression in trembling aspen (Populus tremuloides) exposed to root hypoxia

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Xiangfeng Tan ◽  
Mengmeng Liu ◽  
Ning Du ◽  
Janusz J. Zwiazek
Keyword(s):  
Gas Exchange ◽  
Water Transport ◽  
Populus Tremuloides ◽  
Leaf Gas Exchange ◽  
Hydraulic Conductance ◽  
Root Hydraulic Conductance ◽  
Trembling Aspen ◽  
Expression Levels ◽  
Root Hypoxia ◽  
Exogenous Ethylene

Abstract Background Root hypoxia has detrimental effects on physiological processes and growth in most plants. The effects of hypoxia can be partly alleviated by ethylene. However, the tolerance mechanisms contributing to the ethylene-mediated hypoxia tolerance in plants remain poorly understood. Results In this study, we examined the effects of root hypoxia and exogenous ethylene treatments on leaf gas exchange, root hydraulic conductance, and the expression levels of several aquaporins of the plasma membrane intrinsic protein group (PIP) in trembling aspen (Populus tremuloides) seedlings. Ethylene enhanced net photosynthetic rates, transpiration rates, and root hydraulic conductance in hypoxic plants. Of the two subgroups of PIPs (PIP1 and PIP2), the protein abundance of PIP2s and the transcript abundance of PIP2;4 and PIP2;5 were higher in ethylene-treated trembling aspen roots compared with non-treated roots under hypoxia. The increases in the expression levels of these aquaporins could potentially facilitate root water transport. The enhanced root water transport by ethylene was likely responsible for the increase in leaf gas exchange of the hypoxic plants. Conclusions Exogenous ethylene enhanced root water transport and the expression levels of PIP2;4 and PIP2;5 in hypoxic roots of trembling aspen. The results suggest that ethylene facilitates the aquaporin-mediated water transport in plants exposed to root hypoxia.

Comparative response to post‐production process of two Anastrepha ludens strains: Application in the sterile insect technique

2021 ◽  
Author(s):  
José Arredondo ◽  
Juan F. Aguirre‐Medina ◽  
José S. Meza ◽  
Jorge Cancino ◽  
Francisco Díaz‐Fleischer
Keyword(s):  
Production Process ◽  
Sterile Insect Technique ◽  
Anastrepha Ludens ◽  
Comparative Response ◽  
Post Production
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