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Luca Capriotti
Department of Agricultural, Food and Environmental Sciences, Marche Polytechnic University, 60131 Ancona, Italy

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Journal article
Published: 29 March 2021 in Plants
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Plant pathogenic fungi are the largest group of disease-causing agents on crop plants and represent a persistent and significant threat to agriculture worldwide. Conventional approaches based on the use of pesticides raise social concern for the impact on the environment and human health and alternative control methods are urgently needed. The rapid improvement and extensive implementation of RNA interference (RNAi) technology for various model and non-model organisms has provided the initial framework to adapt this post-transcriptional gene silencing technology for the management of fungal pathogens. Recent studies showed that the exogenous application of double-stranded RNA (dsRNA) molecules on plants targeting fungal growth and virulence-related genes provided disease attenuation of pathogens like Botrytis cinerea, Sclerotinia sclerotiorum and Fusarium graminearum in different hosts. Such results highlight that the exogenous RNAi holds great potential for RNAi-mediated plant pathogenic fungal disease control. Production of dsRNA can be possible by using either in-vitro or in-vivo synthesis. In this review, we describe exogenous RNAi involved in plant pathogenic fungi and discuss dsRNA production, formulation, and RNAi delivery methods. Potential challenges that are faced while developing a RNAi strategy for fungal pathogens, such as off-target and epigenetic effects, with their possible solutions are also discussed.

ACS Style

Daniel Gebremichael; Zeraye Haile; Francesca Negrini; Silvia Sabbadini; Luca Capriotti; Bruno Mezzetti; Elena Baraldi. RNA Interference Strategies for Future Management of Plant Pathogenic Fungi: Prospects and Challenges. Plants 2021, 10, 650 .

AMA Style

Daniel Gebremichael, Zeraye Haile, Francesca Negrini, Silvia Sabbadini, Luca Capriotti, Bruno Mezzetti, Elena Baraldi. RNA Interference Strategies for Future Management of Plant Pathogenic Fungi: Prospects and Challenges. Plants. 2021; 10 (4):650.

Chicago/Turabian Style

Daniel Gebremichael; Zeraye Haile; Francesca Negrini; Silvia Sabbadini; Luca Capriotti; Bruno Mezzetti; Elena Baraldi. 2021. "RNA Interference Strategies for Future Management of Plant Pathogenic Fungi: Prospects and Challenges." Plants 10, no. 4: 650.

Review
Published: 09 August 2020 in International Journal of Molecular Sciences
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Downy mildew, powdery mildew, and grey mold are some of the phytopathological diseases causing economic losses in agricultural crops, including grapevine, worldwide. In the current scenario of increasing global warming, in which the massive use of agrochemicals should be limited, the management of fungal disease has become a challenge. The knowledge acquired on candidate resistant (R) genes having an active role in plant defense mechanisms has allowed numerous breeding programs to integrate these traits into selected cultivars, even though with some limits in the conservation of the proper qualitative characteristics of the original clones. Given their gene-specific mode of action, biotechnological techniques come to the aid of breeders, allowing them to generate simple and fast modifications in the host, without introducing other undesired genes. The availability of efficient gene transfer procedures in grapevine genotypes provide valid tools that support the application of new breeding techniques (NBTs). The expertise built up over the years has allowed the optimization of these techniques to overexpress genes that directly or indirectly limit fungal and oomycetes pathogens growth or silence plant susceptibility genes. Furthermore, the downregulation of pathogen genes which act as virulence effectors by exploiting the RNA interference mechanism, represents another biotechnological tool that increases plant defense. In this review, we summarize the most recent biotechnological strategies optimized and applied on Vitis species, aimed at reducing their susceptibility to the most harmful fungal and oomycetes diseases. The best strategy for combating pathogenic organisms is to exploit a holistic approach that fully integrates all these available tools.

ACS Style

Luca Capriotti; Elena Baraldi; Bruno Mezzetti; Cecilia Limera; Silvia Sabbadini. Biotechnological Approaches: Gene Overexpression, Gene Silencing, and Genome Editing to Control Fungal and Oomycete Diseases in Grapevine. International Journal of Molecular Sciences 2020, 21, 5701 .

AMA Style

Luca Capriotti, Elena Baraldi, Bruno Mezzetti, Cecilia Limera, Silvia Sabbadini. Biotechnological Approaches: Gene Overexpression, Gene Silencing, and Genome Editing to Control Fungal and Oomycete Diseases in Grapevine. International Journal of Molecular Sciences. 2020; 21 (16):5701.

Chicago/Turabian Style

Luca Capriotti; Elena Baraldi; Bruno Mezzetti; Cecilia Limera; Silvia Sabbadini. 2020. "Biotechnological Approaches: Gene Overexpression, Gene Silencing, and Genome Editing to Control Fungal and Oomycete Diseases in Grapevine." International Journal of Molecular Sciences 21, no. 16: 5701.

Journal article
Published: 16 June 2020 in Plants
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In the present study, an efficient system for the in vitro regeneration of adventitious shoots from the peach rootstock Hansen 536 leaves has been established. Twenty regeneration media containing McCown Woody Plant Medium (WPM) as a basal salt supplemented with different concentrations and combinations of plant growth regulators (PGRs) were tested. Expanded leaves along with their petiole from 3-week-old elongated in vitro shoot cultures were used as starting explants. The highest regeneration rate (up to 53%) was obtained on WPM basal medium enriched with 15.5 μM N6-benzylaminopurine (BAP). The influences on leaf regeneration of the ethylene inhibitor silver thiosulphate (STS) and of different combinations of antibiotics added to the optimized regeneration medium were also investigated. The use of 10 μM STS or carbenicillin (238 mM) combined with cefotaxime (210 μM) significantly increased the average number of regenerating shoots per leaf compared to the control. In vitro shoots were finally elongated, rooted and successfully acclimatized in the greenhouse. The results achieved in this study advances the knowledge on factors affecting leaf organogenesis in Prunus spp., and the regeneration protocol described looks promising for the optimization of new genetic transformation procedures in Hansen 536 and other peach rootstocks and cultivars.

ACS Style

Angela Ricci; Luca Capriotti; Bruno Mezzetti; Oriano Navacchi; Silvia Sabbadini. Adventitious Shoot Regeneration from In Vitro Leaf Explants of the Peach Rootstock Hansen 536. Plants 2020, 9, 1 .

AMA Style

Angela Ricci, Luca Capriotti, Bruno Mezzetti, Oriano Navacchi, Silvia Sabbadini. Adventitious Shoot Regeneration from In Vitro Leaf Explants of the Peach Rootstock Hansen 536. Plants. 2020; 9 (6):1.

Chicago/Turabian Style

Angela Ricci; Luca Capriotti; Bruno Mezzetti; Oriano Navacchi; Silvia Sabbadini. 2020. "Adventitious Shoot Regeneration from In Vitro Leaf Explants of the Peach Rootstock Hansen 536." Plants 9, no. 6: 1.