1. Introduction
The 2030 Agenda for Sustainable Development planned 17 Sustainable Development Goals (SDGs) to ensure a better present and future for our planet and the people that are living on it. The European Union joined Agenda 2030 and included some of them in the Farm to Fork strategy of European Green Deal, which plans a list of measures within 2030, including reaching 25% of organic agriculture, halving food waste (often ascribed to the postharvest decay of fruit and vegetables) and halving the use of synthetic pesticides. Therefore, the need to find environmentally friendly and safe solutions and strategies for the management of pre- and postharvest diseases can meet some of these requirements. The Special Issue “Biological Control of Pre- and Postharvest Fungal Diseases” included nine research articles and two reviews. All contributions provided potential alternatives to synthetic pesticides by reporting innovative results about the use of alternative strategies to synthetic pesticides, involving the use of biocontrol agents (BCAs), essential oils (EOs), basic substances, and plant extracts to manage some of the most important pre- and postharvest diseases of fresh fruit and vegetables.
2. Special Issue Contents
The Special Issue covered three main topics: (i) plant extracts and basic substances, (ii) BCAs and (iii) future perspectives for the implementation of the use of BCAs in agriculture.
On the first topic, three articles focused on the biocidal activity of natural products derived from plants, such as an aqueous extract of
Calotropis procera [
1],
Reynoutria japonica and
Humulus lupulus [
2] and rosemary and eucalyptus EOs [
3] to control
Fusarium oxysporum f. sp.
lycopersici,
Phytophthora infestans and
Penicillium expansum, respectively. Basic substances (e.g., water-soluble form of chitosan hydrochloride and calcium chloride) and the biofumigated
Brassica nigra defatted meal’s effectiveness toward
P. infestans on potatoes and
Cadophora luteo-olivacea on kiwifruit were discussed in two research articles [
2,
4].
On the second topic, six articles focused on study cases aiming to detect active microorganisms (
Trichoderma spp.,
Vishniacozyma victoriae,
Sporobolomyces roseus,
Aureobasidium pullulans and
Metschnikowia fructicola) to control fruit postharvest pathogens by evaluating their main mechanisms of action [
4,
5,
6,
7] and investigating their effect and variations in the composition of fruit microbiome after the application [
8]. An applicative approach was examined in the research article by Bullman et al. (2022) [
9] that showed the application in field and during the storage of different
Metschnikowia pulcherrima bioformulations (freeze dried and liquid) toward bull’s-eye rot of apples.
In the Special Issue, as the third topic, the review by Palmieri et al. (2022) [
10] provided state-of-the-art methods on the biocontrol of fungal plant pathogens. For the BCA’s commercial use, an efficient bioformulation that guarantees long-term stability and an easy application is essential. The review of Teixido et al. (2022) [
11] covered essential aspects, such as the production, formulation, packaging and shelf life of a single BCA. The review provided new insights for implementing all processes for the development of a bioformulation containing a microbial
consortium in order to provide improved disease control than using a single BCA.
3. Conclusions
The present Special Issue consists of articles with purposes of finding alternative, sustainable, and effective strategies to control important pre- and postharvest diseases. Some fungal pathogens could represent an important problem concerning human health to produce toxic compounds. Moreover, the intensive use of synthetic fungicides to manage plant diseases developed the appearance of resistant fungal isolates. To prevent this, all strategies reported in the present Special Issue can represent a valid alternative for adoption in large-scale trials. In addition, in these last years, consumers are increasingly demanding food free of residues and food produced in an environmentally friendly manner.
All articles of this collection provided interesting contributions that help increase knowledge on these research fields and can help improve future breakthroughs in finding applicable solutions. The Guests Editors thank all authors for ensuring the high-quality research findings in this Special Issue and for sharing their expertise; moreover, we thank the valuable support of the journal “Horticulturae” for allowing us to realize this Special Issue, which allows us to provide advances in the field of the biological control of pre- and postharvest diseases with respect to fresh fruit and vegetables.
Author Contributions
Writing—Original Draft Preparation, Writing—Review & Editing, Visualization, Supervision, A.D.F., G.R. and R.T. All authors have read and agreed to the published version of the manuscript.
Funding
This research received no external funding.
Data Availability Statement
Not applicable.
Conflicts of Interest
The authors declare no conflict of interest.
References
- Abo-Elyousr, K.; Ali, E.; Sallam, N. Alternative control of tomato wilt using the aqueous extract of Calotropis procera. Horticulturae 2022, 8, 197. [Google Scholar] [CrossRef]
- Žabka, M.; Pavela, R. The dominance of chitosan hydrochloride over modern natural agents or basic substances in efficacy against Phytophthora infestans, and its safety for the non-target model species Eisenia fetida. Horticulturae 2021, 7, 366. [Google Scholar] [CrossRef]
- Xylia, P.; Chrysargyris, A.; Ahmed, Z.; Tzortzakis, N. Application of rosemary and eucalyptus essential oils and their main component on the preservation of apple and pear fruits. Horticulturae 2021, 7, 479. [Google Scholar] [CrossRef]
- Di Francesco, A.; Di Foggia, M.; Vittoria, A.; Baraldi, E. Post-harvest non-conventional and traditional methods to control Cadophora luteo-olivacea: Skin pitting agent of Actinidia chinensis var. deliciosa (A. Chev.). Horticulturae 2021, 7, 169. [Google Scholar] [CrossRef]
- López-López, M.; Del-Toro-Sánchez, C.; Gutiérrez-Lomelí, M.; Ochoa-Ascencio, S.; Aguilar-López, J.; Robles-García, M.; Plascencia-Jatomea, M.; Bernal-Mercado, A.; Martínez-Cruz, O.; Ávila-Novoa, M.; et al. Isolation and characterization of Trichoderma spp. for antagonistic activity against avocado (Persea americana Mill) fruit pathogens. Horticulturae 2022, 8, 714. [Google Scholar] [CrossRef]
- Sepúlveda, X.; Silva, D.; Ceballos, R.; Vero, S.; López, M.; Vargas, M. Endophytic yeasts for the biocontrol of Phlyctema vagabunda in apples. Horticulturae 2022, 8, 535. [Google Scholar] [CrossRef]
- Sanzani, S.; Sgaramella, M.; Mosca, S.; Solfrizzo, M.; Ippolito, A. Control of Penicillium expansum by an epiphytic basidiomycetous yeast. Horticulturae 2021, 7, 473. [Google Scholar] [CrossRef]
- Biasi, A.; Zhimo, V.; Kumar, A.; Abdelfattah, A.; Salim, S.; Feygenberg, O.; Wisniewski, M.; Droby, S. Changes in the fungal community assembly of apple fruit following postharvest application of the yeast biocontrol agent Metschnikowia fructicola. Horticulturae 2021, 7, 360. [Google Scholar] [CrossRef]
- Bühlmann, A.; Kammerecker, S.; Müller, L.; Hilber-Bodmer, M.; Perren, S.; Freimoser, F. Stability of dry and liquid Metschnikowia pulcherrima formulations for biocontrol applications against apple postharvest diseases. Horticulturae 2021, 7, 459. [Google Scholar] [CrossRef]
- Palmieri, D.; Ianiri, G.; Del Grosso, C.; Barone, G.; De Curtis, F.; Castoria, R.; Lima, G. Advances and perspectives in the use of biocontrol agents against fungal plant diseases. Horticulturae 2022, 8, 577. [Google Scholar] [CrossRef]
- Teixidó, N.; Usall, J.; Torres, R. Insight into a successful development of biocontrol agents: Production, formulation, packaging, and shelf life as key aspects. Horticulturae 2022, 8, 305. [Google Scholar] [CrossRef]
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