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Preventive and curative activity of postharvest potassium silicate treatments to control green and blue molds on orange fruit

Published on Apr 1, 2014in European Journal of Plant Pathology1.74
· DOI :10.1007/s10658-013-0345-x
Pedro A. Moscoso-Ramírez6
Estimated H-index: 6
,
Lluís Palou26
Estimated H-index: 26
Cite
Abstract
Preventive and curative antifungal activities of postharvest treatments with potassium silicate (PSi) against green (GM) and blue (BM) molds were evaluated on oranges (cvs. ‘Valencia’ or ‘Lanelate’) artificially inoculated in rind wounds with Penicillium digitatum and P. italicum, respectively. The most effective PSi concentration, the effect of fungal inoculum concentration, and the influence of temporal and spatial factors on antifungal activity were assessed in in vivo primary screenings. After 6 days of incubation at 20 °C, significant preventive (treatment before fungal inoculation) and curative (treatment after inoculation) activities against GM and BM were observed with PSi at 90 mM (GM and BM incidence reductions of 23 and 52 %, and 23 and 40 %, respectively). In preventive tests, the effectiveness of PSi was influenced by inoculum concentration (103, 104, 105, or 106 spores ml-1), but not by the distance between treatment and inoculation sites (10, 20 or 30 mm). PSi applied about 2 h before inoculation showed higher preventive activity than applied before 24, 48 or 96 h. In order to determine the best dip treatment conditions, PSi at 90 mM was tested at 20 or 50 °C for 60 or 150 s in small-scale trials with ‘Lanelate’ oranges artificially inoculated before or after the treatment and incubated for 7 days at 20 °C. Dips at 20 °C for 60 s were selected and subsequently applied on inoculated ‘Valencia’ oranges stored at 5 °C and 90 % RH for up to 6 weeks. Curative postharvest dips effectively reduced the incidence and severity of both GM and BM during cold storage, while preventive dips significantly reduced the severity but not the incidence. Overall, postharvest PSi treatments showed potential as a new tool to be part of non-polluting strategies to control penicillium decay of citrus fruit.
  • References (25)
  • Citations (9)
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References25
Newest
Published on Nov 1, 2013in Postharvest Biology and Technology3.93
Pedro A. Moscoso-Ramírez6
Estimated H-index: 6
,
Lluís Palou26
Estimated H-index: 26
Abstract Preventive and curative activities of postharvest treatments with selected chemical resistance inducers to control postharvest green (GM) and blue (BM) molds on oranges (cvs. ‘Valencia’ or ‘Lanelate’) artificially inoculated with Penicillium digitatum and Penicillium italicum , respectively, were evaluated. In vivo primary screenings to select the most effective chemicals and concentrations were performed with benzothiadiazole (BTH), β-aminobutyric acid (BABA), 2,6-dichloroisonicotinic ...
Published on Oct 1, 2012in Postharvest Biology and Technology3.93
Khamis Youssef6
Estimated H-index: 6
,
Angela Ligorio7
Estimated H-index: 7
+ 2 AuthorsAntonio Ippolito30
Estimated H-index: 30
Abstract The effectiveness of sodium bicarbonate (SB), sodium carbonate (SC), sodium silicate (SS), potassium bicarbonate (PB), potassium carbonate (PC), potassium sorbate (PS), calcium chloride (CC), and calcium chelate (CCh) against naturally occurring postharvest decay on ‘Comune’ clementine and ‘Valencia late’ orange fruit was investigated. Aqueous salt solutions (2%, w/v, 20 hl ha −1 ) were applied according to three strategies: (i) by spraying before harvest, (ii) by dipping after harvest,...
Published on Oct 1, 2010in Current Microbiology1.59
Jia Liu13
Estimated H-index: 13
(CAS: Chinese Academy of Sciences),
Yuanyuan Zong6
Estimated H-index: 6
(CAS: Chinese Academy of Sciences)
+ 2 AuthorsShiping Tian46
Estimated H-index: 46
(CAS: Chinese Academy of Sciences)
The antifungal activity of silicon (Si) on Penicillium digitatum, and the possible action mode involved were investigated. Spore germination, germ tube elongation, and mycelial growth of P. digitatum were strongly inhibited by Si in the form of sodium silicate. Using propidium iodide (PI) stain combined with fluorescent microscopy, it was found that the plasma membrane of Si-treated P. digitatum spores was obviously damaged, and the leakage of protein and sugar was significantly higher in Si-tre...
Published on Aug 1, 2010in Journal of Plant Diseases and Protection0.95
Guang-Hui Shen4
Estimated H-index: 4
(NWAFU: Northwest A&F University),
Q.-H. Xue1
Estimated H-index: 1
(NWAFU: Northwest A&F University)
+ 5 AuthorsJuan Zhao5
Estimated H-index: 5
(NWAFU: Northwest A&F University)
Silicon (Si) can reduce the severity of fungal diseases in field crops, but the mechanism by which Si protects plants from fungal diseases is not well understood. This study investigated the effect of potassium silicate on the growth of five soilborne phytopathogenic fungi in vitro. Results showed that the growth of four of the fungal isolates (Rhizoctonia solani, Pestalotiopsis clavispora, Fusarium oxysporum and Fusarium oxysporum f. sp. fragariae) was signficantly (P < 0.05) inhibited on potas...
Published on May 1, 2009in Postharvest Biology and Technology3.93
Samir Droby47
Estimated H-index: 47
(Agricultural Research Organization, Volcani Center),
Michael Wisniewski51
Estimated H-index: 51
(USDA: United States Department of Agriculture)
+ 1 AuthorsCharles L. Wilson39
Estimated H-index: 39
The use of biocontrol agents as an alternative to synthetic, chemical fungicides that are presently used to control postharvest pathogens, has many constraints and obstacles that make it difficult to implement their use as a practical control strategy. Over the last 20 years postharvest biocontrol research has evolved towards being more integrated into a production systems approach with greater awareness of industry concerns. More research, however, is needed in many aspects of the science and t...
Published on Jan 1, 2009
Roberto Buonaurio1
Estimated H-index: 1
,
G. Romanazzi1
Estimated H-index: 1
,
M. Iriti1
Estimated H-index: 1
Published on Jan 1, 2008in Stewart Postharvest Review
Lluís Palou26
Estimated H-index: 26
,
Joseph L. Smilanick40
Estimated H-index: 40
,
Samir Droby47
Estimated H-index: 47
Purpose of review: This article reviews research based on the evaluation of postharvest control methods alternative to conventional chemical fungicides for the control of citrus green and blue moulds, caused by the pathogens Penicillium digitatum and P. italicum, respectively. Emphasis is given to advances developed during the last few years. Potential benefits, disadvantages and commercial feasibility of the application of these methods are discussed. Findings: Substantial progress has been acc...
Published on Aug 1, 2007in International Journal of Food Science and Technology2.28
Yurong Guo1
Estimated H-index: 1
(GAU: Gansu Agricultural University),
Lei Liu1
Estimated H-index: 1
(GAU: Gansu Agricultural University)
+ 1 AuthorsYang Bi7
Estimated H-index: 7
(GAU: Gansu Agricultural University)
Summary Silicon oxide and sodium silicate were investigated as potential agents for the control of postharvest pink rot in Chinese cantaloupe (cultivar Yujingxing) caused by Trichothecium roseum. In vitro tests showed that sodium silicate, when added to potato dextrose agar, was effective in suppressing the radial growth of the pathogen on the medium, whereas silicon oxide was ineffective. The effectiveness of sodium silicate increased with concentration, and the growth of the fungus was complet...
Published on Mar 1, 2006in Plant Disease3.58
Y. Bi1
Estimated H-index: 1
(CAS: Chinese Academy of Sciences),
Shiping Tian46
Estimated H-index: 46
(CAS: Chinese Academy of Sciences)
+ 2 AuthorsGuozheng Qin33
Estimated H-index: 33
(CAS: Chinese Academy of Sciences)
ABSTRACT The effect of sodium silicate (Si) for control of decay was tested in Hami melons (Cucumis melo L. var. inodorus Jacq.). Si significantly inhibited mycelial growth of Alternaria alternata, Fusarium semitectum, and Trichothecium roseum in vitro. Si at 100 mM was more effective than Si at 25 or 50 mM at controlling the diseases caused by the three pathogens, whereas Si at 200 mM was phytotoxic. Si treatments applied at 100 mM pre-inoculation with T. roseum had lower decay incidence and se...
Published on Jan 1, 2006
Mark Laing18
Estimated H-index: 18
,
M. C. Gatarayiha6
Estimated H-index: 6
,
A. Adandonon1
Estimated H-index: 1
Cited By9
Newest
Published on Nov 23, 2018in Horticulturae
Control of postharvest diseases of fresh fruits has relied for many years on the continuous use of conventional chemical fungicides. However, nonpolluting alternatives are increasingly needed because of human health and environmental issues related to the generation of chemical residues. Low-toxicity chemicals classified as food preservatives or as generally recognized as safe (GRAS) compounds have known and very low toxicological effects on mammals and minimal impact on the environment. Among t...
Published on Jan 1, 2018in Crop Protection2.17
Mareli Kellerman2
Estimated H-index: 2
(Stellenbosch University),
Elbie Liebenberg1
Estimated H-index: 1
(Stellenbosch University)
+ 2 AuthorsPaul H. Fourie24
Estimated H-index: 24
(Stellenbosch University)
Abstract Residue loading of pyrimethanil (PYR) with application methods typically used in South African packhouses and green mould control was studied. PYR was applied curatively (after inoculation) and protectively (before inoculation) in dip, drench and wax coating treatments and fruit were inoculated with an imazalil (IMZ)-sensitive or an IMZ-resistant isolate of Penicillium digitatum , the causal agent of citrus green mould. The dip treatments consisted of PYR concentrations 0, 50, 100, 250,...
Published on Dec 29, 2016in Ousl Journal
Darshani Weerahewa2
Estimated H-index: 2
(Open University of Sri Lanka),
Kosala Somapala (Open University of Sri Lanka)
Silicon (Si) has proven to enhance disease resistance in a wide range of tropical fruits and vegetables. It has been used in controlling various diseases: mildews, rots, moulds, wilt, blight, anthracnose and leaf spots. However, the highest number of records was available on reducing diseases of powdery mildews on fruits and vegetables belonging to the family Cucurbitaceae. Silicon-mediated defense responses in plant pathosystems are mainly attributed to the physical resistance, which involves r...
Published on Dec 1, 2016in Postharvest Biology and Technology3.93
Lluís Palou26
Estimated H-index: 26
,
Asgar Ali20
Estimated H-index: 20
(University of Nottingham Malaysia Campus)
+ 1 AuthorsG. Romanazzi23
Estimated H-index: 23
(Marche Polytechnic University)
Abstract Postharvest decay caused by fungal pathogens is one of the most important factors causing economic losses for the worldwide industry of fresh horticultural produce. Despite the positive results of the use of conventional chemical fungicides, alternatives for decay control are needed because of increasing concerns related to their widespread and continued use. Low-toxicity chemical alternatives evaluated for control of postharvest diseases of temperate, subtropical and tropical fruit, an...
Published on May 1, 2016in Postharvest Biology and Technology3.93
Clara Montesinos-Herrero8
Estimated H-index: 8
,
Pedro A. Moscoso-Ramírez6
Estimated H-index: 6
,
Lluís Palou26
Estimated H-index: 26
Abstract The curative activity of the food additives dehydroacetic acid, dimethyl dicarbonate, ethylene diamine tetracetic acid, sodium acetate, and sodium benzoate (SB) was tested in in vivo preliminary screenings against green and blue molds on citrus fruit artificially inoculated 24 h before with Penicillium digitatum and Penicillium italicum , respectively. SB was the most effective compound and it was further tested in trials simulating postharvest industrial applications. Dip treatments fo...
Published on Feb 22, 2016in Molecules3.06
Jimei Ma18
Estimated H-index: 18
,
Yupeng Li1
Estimated H-index: 1
+ 3 AuthorsHong Jiang6
Estimated H-index: 6
Nine oxylipin mimics were designed and synthesized starting from d-mannose. Their antifungal activity against three citrus postharvest pathogens was evaluated by spore germination assay. The results indicated that all the compounds significantly inhibited the growth of Penicillium digitatum, Penicillium italicum and Aspergillus niger. The compound (3Z,6Z,8S,9R,10R)-octadeca-3,6-diene-8,9,10-triol (3) exhibited excellent inhibitory effect on both Penicillium digitatum (IC50 = 34 ppm) and Penicill...
Published on Feb 1, 2016in Canadian Journal of Microbiology1.55
Lili Niu1
Estimated H-index: 1
,
Yang Bi7
Estimated H-index: 7
+ 5 AuthorsAlejandro Calderón-Urrea1
Estimated H-index: 1
Trichothecium roseum is one of the most important postharvest pathogens in arid and semiarid regions. Sodium silicate (NaSi) and environmental pH have significant inhibitory effects on fungal growth. However, no study has addressed the relationship of NaSi and pH in combination and the effects on T. roseum. In this work, we showed that spore germination, germ tube elongation, and mycelial growth of T. roseum were significantly inhibited by various NaSi concentrations, which had corresponding inc...
Published on Sep 1, 2014in Crop Protection2.17
Ueder Pedro Lopes4
Estimated H-index: 4
,
Laércio Zambolim18
Estimated H-index: 18
+ 2 AuthorsFernando Luiz Finger1
Estimated H-index: 1
Abstract The objective of this study was to investigate the effect of silicon and chitosan as alternative controls for postharvest rot of strawberries (gray mold) caused by Botrytis cinerea . Chitosan and potassium silicate applications were performed at the preharvest stage using the following treatments: chitosan once a week; potassium silicate once a week; potassium silicate once a week + chitosan once a week; and without application. An additional variable was introduced at postharvest, with...
Published on Jan 1, 2014
Lluís Palou1
Estimated H-index: 1
Abstract Green and blue molds, caused by the pathogens Penicillium digitatum and Penicillium italicum , respectively, are the most economically important postharvest diseases of citrus fruit in all production areas with low summer rainfall. Both fungi are strict wound pathogens that affect all citrus species and cultivars and can infect the fruit in the field, the packing house, and during distribution and marketing. Taxonomy and morphology of the pathogens and factors that can influence fruit i...
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