Physiological blockage in plants in response to postharvest stress

Vieira, Marcos Ribeiro da Silva; Santos, Caio Márcio Guimarães; Souza, Angela Vacaro de; Paes, Reinaldo de Alencar; Silva, Luzia Ferreira da

doi:10.5897/ajbx12.017

Cited by 6 publications

(7 citation statements)

References 15 publications

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“…Once the obstruction of xylem vessels occurs, water balance in the stems is impaired; under these conditions, transpiration continues and water absorption is limited, causing water stress which, in turn, causes premature loss of turgor in organs and, consequently, a reduction in the postharvest life of stems. On the other hand, the removal of obstructed areas, performed by periodic cuts at the base of stems submerged in water, may alleviate or even reverse the water status of the stems, restoring their normal water potential (AHMAD et al, 2012;VIEIRA et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

“…One of the techniques used to mitigate the effects of water stress is to recut the stem ends into floral preservative solutions, restoring stems normal water potential and allowing greater tissue hydration (BROSCHAT and DONSELMANN, 1988;AHMAD et al, 2012;VIEIRA et al, 2013). However, no information about maintaining postharvest quality of Heliconia related to this type of intervention is available.…”

Section: Introductionmentioning

confidence: 99%

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Heliconia ‘Golden Torch’ postharvest: stem ends cutting and renewing vase water benefits

Folha

Souza

Amaral

et al. 2016

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The postharvest longevity is one of the main aspects that should be considered in the production of cut flowers and is a pre-requisite for product quality and marketing success. However, cut flowers are highly perishable products that need to be treated and stored to maintain its quality and value. This study aimed to assess Heliconia psittacorum 'Golden Torch' inflorescences postharvest longevity, submitted to periodic stem ends cutting and vase water renewal. The experimental design was a completely randomized 3x2 factorial, corresponding to the stem ends cuts (1,0 cm; without cutting; cutting at 24 hours; cutting at 48 hours) and water renewal (with and without renewal), with four repetitions. The assessed variables were: water uptake by flower stems (WUFS); loss of fresh stem mass (LFSM); dry matter of flower stems (DMFS) and postharvest longevity (PHL). The stem cut significantly influenced WUFS and LFSM. However, the water renewal factors affected all variables, while the interaction between factors (stem cuts x water renewal) only influenced PHL. The cuts at the stem base of Heliconia 'Golden Torch' procedures enable the restoration of water potential and this practice, associated with water renewal during storage allows greater tissues hydration, maintaining the postharvest quality. Keywords: Cut flowers, vessels obstruction, postharvest quality. RESUMO Pós-colheita de helicônia 'Golden Torch': benefícios do corte na base da haste e renovação da água de vaso A longevidade pós-colheita é um dos aspectos mais relevantes da produção de flores de corte e é pré-requisito para qualidade do produto e o sucesso na comercialização. No entanto, as flores de corte são produtos altamente perecíveis que necessitam serem tratadas e armazenadas de forma a manter sua qualidade e valor. O objetivo deste estudo foi avaliar a durabilidade pós-colheita de inflorescências de Heliconia psittacorum 'Golden Torch' submetidas a cortes periódicos na base das hastes e renovação da água de vaso. O delineamento foi o inteiramente casualizado, arranjado em esquema fatorial (3 x 2), correspondentes aos cortes (1,0 cm) na base das hastes (sem corte; corte a 24h; corte a 48h) e renovação de água (com e sem renovação), com quatro repetições. As variáveis avaliadas foram: absorção de água pelas hastes florais (WUFS); perda de massa fresca das hastes florais (LFSM); massa seca das hastes florais (DMFS) e longevidade pós-colheita (PHL). Os cortes realizados na base das hastes florais influenciaram significativamente na AAHF e PMFHF. No entanto, o fator renovação de água apresentou efeito sobre todas as variáveis analisadas, enquanto que a interação entre os fatores (cortes na base x renovação de água) influenciaram apenas a POSC. A utilização de cortes na base das hastes florais de helicônia 'Golden Torch' possibilitou o restabelecimento do potencial hídrico e essa prática associada à renovação da água durante o armazenamento permite maior hidratação dos tecidos, mantendo a qualidade de vida pós-colheita. Palavras-chave: floricultur...

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heliconia ‘Golden Torch’ postharvest: stem ends cutting and renewing vase water benefits

Folha

Souza

Amaral

et al. 2016

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“…Among the different defense mechanisms, the deposition of secondary metabolic compounds/phenolic compounds is the foremost response of plants that is triggered to protect freshly wounded tissues by compartmentalizing or isolating damaged tissues [8]. These compounds, according to their compositions, are callose, alkaloids, tannin, lignin, starch, gum (pectin) suberin, resin, tyloses, latex, and mucilage [5,9,10].…”

Section: Woundingmentioning

confidence: 99%

“…This imbalance is usually linked with a reduction in water transport through xylem because of vascular occlusion or due to increased cell membrane permeability, linked to senescence or stress [2]. When xylem vessels are blocked, there is a reduction in water uptake because of high hydraulic resistance; still, the respiration process is continuous, which leads to water imbalance and results in flower wilting due to a loss of turgidity [5].…”

Section: Introductionmentioning

confidence: 99%

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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“…The vascular blockage in Astilbe , Bouvardia , and chrysanthemum flowers was mainly due to plant‐induced xylem occlusions (Loubaud & van Doorn, 2004; van Doorn & Cruz, 2000; van Doorn & Vaslier, 2002; Vaslier & van Doorn, 2003). Formation of such vascular plugs that could be induced by the cut surface, can lead to deposition of materials in the xylem (da Silva Vieira et al., 2013; van Doorn, 1997b) and result in a reduction of water uptake and the premature wilting of cut flowers (van Doorn, 2012). Histochemical studies have been carried out to identity the nature of the material occlusions in stem blockages of Dendrobium “Pompadour” flower stems held in tap water (Ketsa & Nobuchi, 1991).…”

Section: Postharvest Physiologymentioning

confidence: 99%

The Dendrobium Orchid: Botany, horticulture, and utilization

Ketsa

Warrington

2023

Crop Science

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Dendrobium, one of the largest genera of tropical orchids, is grown commercially on a large scale with an important economic impact in several ASEAN countries.Dendrobium orchids can be grown in a wide range of climates, but flower production is best under tropical conditions. Due to being the most popular orchid for cut flower production, many hybrids of Dendrobium have been produced with colorful and attractive blooms. Cut flowers of Dendrobium are popular worldwide. In addition, many Dendrobium cultivars can be grown as flowering potted plants and for other purposes such as in medicinal applications and for use in decorative products. Postharvest physiology and technology are important in maintaining the quality of both cut flowers and potted plants from production sites to the marketplace. Plants of the Dendrobium genus also contain a wide diversity of bioactive compounds that can be developed into medicinal and cosmetic products. This review describes the botany, cultivation, postharvest physiology, handling and utilization of Dendrobium.

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Physiological blockage in plants in response to postharvest stress

Cited by 6 publications

References 15 publications

Heliconia ‘Golden Torch’ postharvest: stem ends cutting and renewing vase water benefits

Heliconia ‘Golden Torch’ postharvest: stem ends cutting and renewing vase water benefits

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

The Dendrobium Orchid: Botany, horticulture, and utilization

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