Diseases of dragon fruit (Hylocereus species): Etiology and current management options

Balendres, Mark Angelo; Bengoa, Jennelyn

doi:10.1016/j.cropro.2019.104920

Cited by 39 publications

(26 citation statements)

References 57 publications

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“…Plant diseases are among the most serious problems faced by dragon fruit growers worldwide, negatively affecting their yield and income (Balendres & Bengoa, 2019). In the Philippines, reddish‐brown spot caused by Nigrospora sphaerica (Taguiam et al.…”

Section: Figurementioning

confidence: 99%

Reduction of Selenicereus stem cuttings weight by fungal plant pathogens during storage

Taguiam

Evallo

Balendres

2021

Journal of Phytopathology

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Dragon fruit (Selenicereus spp.) is a high‐value crop in the Philippines. It is commonly propagated using stem cuttings, which quality is essential for fruit production. Several pathogens have been reported to cause various diseases in dragon fruit worldwide. These diseases affect stem and fruit quality in the field, but the consequences during storage are unknown. This study aims to determine the effect of three pathogens (Neoscytalidium dimidiatum, Epicoccum sorghinum, and Nigrospora sphaerica) on Selenicereus stem cuttings in controlled storage conditions. Three weeks after inoculation, only N. dimidiatum significantly reduced Selenicereus stem weight in both cooler (air‐conditioned storage area/19‐25°C) and warmer (room temperature/28‐30°C) temperatures. Nonetheless, all pathogens induced symptoms on stems, which caused a loss in product quality. Neoscytalidium dimidiatum caused significantly more severe symptoms under controlled conditions. In general, symptoms were more severe on the stems kept in the air‐conditioned storage area. This study highlights the importance of disease‐free planting materials and adequate temperature in the storage area in the preparation and dissemination of high‐quality dragon fruit stem cuttings.

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Section: Figurementioning

confidence: 99%

Reduction of Selenicereus stem cuttings weight by fungal plant pathogens during storage

Taguiam

Evallo

Balendres

2021

Journal of Phytopathology

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“…Dragon fruit used to be a backyard plant grown only for table consumption and medicinal uses. But now, there is a global growth of dragon fruit production from which growers are getting bene tted (Balendres & Bengoa, 2019). The pulp of dragon fruit has a high concentration of vitamin C as well as water-soluble ber.…”

Section: Introductionmentioning

confidence: 99%

Microencapsulation of Dragon Fruit Peel Extract by Freeze-Drying Using Hydrocolloids: Optimization by Hybrid Artificial Neural Network and Genetic Algorithm

Raj

Dash

2022

Food Bioprocess Technol

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The freeze drying encapsulation process was used to encapsulate dragon fruit peel extract with three distinct wall materials: maltodextrin, gum arabica, and gelatin. The process was modeled using a feed forward back propagation arti cial neural network with four, eleven, and four neurons in the input, hidden, and output layers. Three of the four input neurons were concentrations of wall material (g), while the fourth was ultrasonication power. The four output neurons were encapsulation e ciency, antioxidant activity, hygroscopicity, and solubility of freeze-dried encapsulation powder. The procedure was optimized using hybrid arti cial neural network (ANN) and genetic algorithm (GA) approach. The optimal wall material composition for encapsulation obtained by the integrated ANN and GA was 4.461 g maltodextrin, 3.863 g gum arabic, and 3.198 g gelatin. The optimal ultrasonication power for achieving a homogenous mixture was determined to be 123 W. At the optimal condition, the predicted values for the responses encapsulation e ciency, antioxidant activity, hygroscopicity, and solubility were found to be 88.143%, 81.702%, 6.924 g/100g, and 32.841%, respectively. Under optimal conditions, the relative deviation between the predicted model and experimental outcomes was less than 2.077%. The thermal stability of the encapsulated powder followed the rst order kinetic modeling. The results showed that the sample treated at pH of 7 was more thermally stable at 80°C than the sample treated at pH of 3.6. The half-life time was found to be 140 min and 103 min for the sample treated at pH of 7 and 3.6, respectively.

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“…Due to the interruption of nutrient supply, the vitality of the postharvest dragon fruits was weakened, the disease resistance was reduced, and they could be infected easily by pathogenic microorganisms during storage and transportation, resulting in illness. At present, there are kinds of diseases caused by microorganisms such as anthracnose, soft rot, canker, black spot, and wilts in dragon fruit after harvest ( Balendres and Bengoa, 2019 ). Among them, fungal diseases are more common and serious.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Screening of Control Agents Against Isolated Fungal Pathogens Causing Postharvest Diseases of Pitaya in Guizhou, China

Chen

et al. 2022

Front. Chem.

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Pitaya, or dragon fruit, is a typical tropical fruit with an appealing taste and diverse health benefits to humans. The plantation of pitaya in Guizhou province in China has greatly boosted the income of local farmers and alleviated poverty. However, the frequent occurrence of postharvest diseases has brought large economic loss. To find a solution, we set out to identify the postharvest disease-causing agents of Guizhou pitaya. Several fungi were isolated from diseased pitaya and identified as species based on the ITS1 sequence similarity. Of them, Penicillium spinulosum, Phoma herbarum, Nemania bipapillata, and Aspergillus oryzae were, for the first time, found to cause dragon fruit disease. In consideration of their prevalence in postharvest fruit diseases, Alternaria alternata H8 and Fusarium proliferatum H4 were chosen as representative pathogens for the drug susceptibility test. Among the tested drugs and plant extracts, 430 g/L tebuconazole and 45% prochloraz were found to be the most potent fungicides against H8 and H4, respectively. The research provides insights into the mechanism and control of postharvest diseases of dragon fruits in Guizhou, China, and thus could be of economic and social significance to local farmers and the government.

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Diseases of dragon fruit (Hylocereus species): Etiology and current management options

Cited by 39 publications

References 57 publications

Reduction of Selenicereus stem cuttings weight by fungal plant pathogens during storage

Reduction of Selenicereus stem cuttings weight by fungal plant pathogens during storage

Microencapsulation of Dragon Fruit Peel Extract by Freeze-Drying Using Hydrocolloids: Optimization by Hybrid Artificial Neural Network and Genetic Algorithm

Laboratory Screening of Control Agents Against Isolated Fungal Pathogens Causing Postharvest Diseases of Pitaya in Guizhou, China

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