Article
Plant Sciences
Tiemei Li, Xin Cheng, Xiaowei Wang, Guanggui Li, Bianbian Wang, Wenyuan Wang, Na Zhang, Yulei Han, Bolei Jiao, Yuejin Wang, Guotian Liu, Tengfei Xu, Yan Xu
Summary: The study revealed that VvNAC72 in grapevine negatively modulates detoxification of MG by repressing VvGLYI-4, enhancing resistance to downy mildew. This is achieved, at least in part, by regulating MG-associated ROS through a salicylic acid-mediated defense pathway.
Article
Plant Sciences
Qingqing Fu, Jing Yang, Kangzhuang Zhang, Kaixin Yin, Gaoqing Xiang, Xiao Yin, Guotian Liu, Yan Xu
Summary: This study investigates the role of the PvCRN11 protein in resistance against downy mildew in grapes. The results show that PvCRN11 induces plant immune response and inhibits the colonization of downy mildew pathogens. This research provides potential application of PvCRN11 as a protectant against downy mildew in grape production.
Article
Agriculture, Multidisciplinary
Aleksandra Burdziej, Anthony Bellee, Enora Bodin, Josep Valls Fonayet, Noel Magnin, Anna Szakiel, Tristan Richard, Stephanie Cluzet, Marie-France Corio-Costet
Summary: Three recognized plant defense stimulators (PDS), methyl jasmonate (MeJA), benzothiadiazole (BTH) and phosphonates (PHOS), were shown to confer resistance to the biotrophic pathogen Plasmopara viticola when sprayed on grapevine Vitis vinifera cuttings. The effects on molecular defense-related genes and polyphenol content were observed, with specific signaling pathways for each elicitor and some cross-talks. These results provide evidence of the different modes of action of PDS in sustainable viticulture.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Goncalo Laureano, Ana Rita Cavaco, Ana Rita Matos, Andreia Figueiredo
Summary: Research has shown that grapevines exhibit an up-regulation of plastidial FA desaturases genes upon challenge from the biotrophic pathogen Plasmopara viticola, leading to a higher content of polyunsaturated fatty acids (PUFAs) in chloroplast lipids. This discovery highlights the key role of FA desaturases in membrane remodelling and signalling in grapevine defense against biotrophic pathogens.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Agronomy
Francesco Calzarano, Leonardo Seghetti, Giancarlo Pagnani, Elisa Giorgia Metruccio, Stefano Di Marco
Summary: This study evaluated the effectiveness of copper chabasite-rich zeolitite against downy mildew in a two-year experiment conducted in Italian vineyards. The results showed that the copper zeolitite had similar control effects as conventional fungicides. Furthermore, the treated vines had a lower percentage of infected bunches and berries, and the wines made from these vines had increased polyphenol content and color intensity.
Article
Plant Sciences
David M. M. Gadoury, Surya Sapkota, Lance Cadle-Davidson, Anna Underhill, Tyler McCann, Kaitlin M. M. Gold, Nikita Gambhir, David B. B. Combs
Summary: Nighttime applications of germicidal ultraviolet effectively suppressed three diseases of grapevine, including powdery mildew, downy mildew, and sour rot. UV-C light with a peak wavelength of 254 nm and a full width at half maximum (FWHM) of 5 nm strongly inhibited the germination of conidia of Erysiphe necator. Exposure to UV-C at a dose of 100 J/m(2) during darkness reduced infection and sporulation of Plasmopara viticola by over 70%.
Article
Genetics & Heredity
Goncalo Pereira, Joao Pereira, Rita B. Santos, Andreia Figueiredo
Summary: This study reveals the importance of epigenetic regulation in the interaction between grapevine and downy mildew, suggesting that early hypomethylation is associated with resistance to the pathogen.
Article
Agronomy
Karin Weitbrecht, Stefan Schwab, Christoph Rupp, Evi Bieler, Markus Duerrenberger, Gottfried Bleyer, Stefan Schumacher, Hanns-Heinz Kassemeyer, Rene Fuchs, Eberhard Schluecker
Summary: The study demonstrates that copper minimization through microencapsulation is feasible, with CuCaps showing comparable effectiveness to commercially available copper-based fungicides in reducing disease severity on leaves and grape clusters. In challenging years, CuCaps could serve as a valuable option for organic farmers, providing a promising alternative to traditional copper-based products.
Article
Biochemistry & Molecular Biology
Carlotta Pirrello, Giulia Malacarne, Marco Moretto, Luisa Lenzi, Michele Perazzolli, Tieme Zeilmaker, Guido Van den Ackerveken, Stefania Pilati, Claudio Moser, Lisa Giacomelli
Summary: This study demonstrates that the grapevine VviDMR6-1 gene can complement the resistance mutant in Arabidopsis, making it a promising candidate gene for generating resistant grape cultivars. The study also reveals the association of VviDMR6-1 with pathogenesis-responsive genes.
Article
Multidisciplinary Sciences
Nicolas Vigneron, Jerome Grimplet, Eric Remolif, Markus Rienth
Summary: This study aimed to investigate the transcriptomic changes induced by oregano essential oil vapour (OEOV) in DM-infected grapevines. The results showed that OEOV significantly reduced DM sporulation and its efficacy appears to involve genes from a putative signalling pathway that has yet to be characterized, rather than stilbene synthesis.
SCIENTIFIC REPORTS
(2023)
Article
Plant Sciences
Demetrio Marciano, Valentina Ricciardi, Giuliana Maddalena, Annamaria Massafra, Elena Marone Fassolo, Simona Masiero, Piero Attilio Bianco, Osvaldo Failla, Gabriella De Lorenzis, Silvia Laura Toffolatti
Summary: Downy mildew, caused by Plasmopara viticola, is a major threat to viticulture. Nitrogen fertilization affects disease severity but not the expression of susceptibility/resistance genes. Exploiting these genes could lead to new environmentally friendly disease management tools.
Article
Plant Sciences
Demetrio Marciano, Valentina Ricciardi, Elena Marone Fassolo, Alessandro Passera, Piero Attilio Bianco, Osvaldo Failla, Paola Casati, Giuliana Maddalena, Gabriella De Lorenzis, Silvia Laura Toffolatti
Summary: This research assessed the efficacy of RNAi triggered by exogenous dsRNA in controlling P. viticola infections in grapevines, showing significant reductions in VviLBDIf7 gene expression and disease severity. The treatment led to alterations in the pathogen's vegetative and reproductive structures and exhibited no deleterious off-target effects, demonstrating the potential of RNAi for silencing susceptibility factors as a sustainable strategy for disease control.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Petra Stambuk, Iva Sikuten, Jasminka Karoglan Kontic, Edi Maletic, Darko Preiner, Ivana Tomaz
Summary: This study investigates the association between the initial leaf polyphenolic composition and the susceptibility of grapevine to downy mildew. The research finds that the diverse genetic background of Croatian grapevine germplasm leads to different reactions to the infection of Plasmopara viticola. The initial constitutive polyphenolic composition of the leaves has a crucial influence on their susceptibility to the pathogen, which can be utilized in grapevine breeding programs.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Nikola Mijailovic, Nicola Richet, Sandra Villaume, Andrea Nesler, Michele Perazzolli, Essaid Ait Barka, Aziz Aziz
Summary: The study demonstrated that using rare sugar-based products can induce resistance in grapevine leaves against downy mildew, primarily through enhancing the activation of salicylic acid- and jasmonic acid/ethylene-responsive genes and stilbene phytoalexin accumulation. IFP48 provides protection against P. viticola infection, but shows inconsistent effects against B. cinerea.
Article
Plant Sciences
Marisa Maia, Andrea McCann, Cedric Malherbe, Johann Far, Jorge Cunha, Jose Eiras-Dias, Carlos Cordeiro, Gauthier Eppe, Loic Quinton, Andreia Figueiredo, Edwin De Pauw, Marta Sousa Silva
Summary: This study successfully localized the molecules involved in the initial moments of grapevine-Plasmopara viticola interaction using MSI and found their accumulation on the veins. This provides important clues for further understanding the infection mechanism of P. viticola.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agronomy
Remi Platel, Melodie Sawicki, Qassim Esmaeel, Beatrice Randoux, Pauline Trapet, Mohammed El Guilli, Noureddine Chtaina, Segolene Arnauld, Alexandre Bricout, Alice Rochex, Natacha Bourdon, Patrice Halama, Cedric Jacquard, Essaid Ait Barka, Philippe Reignault, Maryline Magnin-Robert, Ali Siah
Summary: This study isolated two strains of Bacillus velezensis with antimicrobial activity against Zymoseptoria tritici, a pathogen causing the highly significant disease Septoria tritici blotch on wheat crops. The strains were found to produce different types of cyclic lipopeptides, with one strain showing stronger antifungal activity due to the synthesis of putative bacillomycin D. This research provides new potential for the biocontrol of Z. tritici.
Article
Microbiology
Lidiane Carla Miotto Vilanova, Marine Rondeau, Mathilde Robineau, Jean Francois Guise, Celine Lavire, Ludovic Vial, Florence Fontaine, Christophe Clement, Cedric Jacquard, Qassim Esmaeel, Essaid Ait Barka, Lisa Sanchez
Summary: This study investigated the effect of Paraburkholderia phytofirmans PsJN on the growth of Botrytis cinerea. The results showed that direct spraying of PsJN on inflorescences had a significant protective effect and inhibited spore germination of Botrytis.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Agronomy
Khadija Goura, Rachid Lahlali, Ouafaa Bouchane, Mohammed Baala, Nabil Radouane, Jihane Kenfaoui, Said Ezrari, Hajar El Hamss, Nabila El Alami, Said Amiri, Essaid Ait Barka, Abdessalem Tahiri
Summary: Canker symptoms were observed on almond trees in Fez-Meknes, Morocco. Four representative fungal isolates were identified and found to be pathogenic to their hosts with varying degrees of virulence. These fungi were also found to have optimal growth response at temperatures ranging from 10 to 35 degrees C and pH levels ranging from 3.0 to 8.0. This study provides valuable information about canker pathogens on almond trees and their management.
Article
Plant Sciences
Tourya Sagouti, Naima Rhallabi, Giancarlo Polizzi, Abdessalem Tahiri, Zineb Belabess, Essaid Ait Barka, Rachid Lahlali
Summary: This study aims to validate serological and molecular methods for routine diagnosis of S. citri in Moroccan citrus groves. A survey was conducted in the main citrus-growing regions of Morocco, and samples were collected from citrus trees with symptoms attributable to S. citri infection. The results showed that real-time PCR assays targeting the putative adhesion-like gene P58 were the most sensitive for accurate diagnosis of S. citri.
Article
Agronomy
Mohammed Khadiri, Hassan Boubaker, Latifa Askarne, Said Ezrari, Nabil Radouane, Abdelaaziz Farhaoui, Hajar El Hamss, Abdessalem Tahiri, Essaid Ait Barka, Rachid Lahlali
Summary: This study demonstrated that Bacillus cereus (B8W8) has antifungal activity against major post-harvest fungal pathogens affecting citrus and apples fruits. The in vitro and in vivo experiments showed that B8W8 could effectively inhibit the mycelial growth and spore's germination of various fungal pathogens. The biocontrol activity of B8W8 is mainly attributed to the production of volatile compounds, lipopeptide, and lytic enzymes.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2023)
Editorial Material
Plant Sciences
Wei Wei, Essaid Ait Barka, Ales Eichmeier
FRONTIERS IN PLANT SCIENCE
(2023)
Review
Microbiology
Salma Benchlih, Qassim Esmaeel, Kamal Aberkani, Abdessalem Tahiri, Zineb Belabess, Rachid Lahlali, Essaid Ait Barka
Summary: Tomato is susceptible to bacterial canker caused by Clavibacter michiganensis subsp. michiganensis (Cmm), leading to significant financial losses. The reliance on chemical pesticides and antibiotics as management strategies poses environmental and human safety risks. Plant growth-promoting rhizobacteria (PGPR) offer an ecological and cost-effective alternative for Cmm biocontrol.
Editorial Material
Microbiology
Salah-Eddine Laasli, Essaid Ait Barka, Rachid Lahlali
Editorial Material
Plant Sciences
Essaid Ait-Barka, Brigitte Mauch-Mani
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Redouane Ouhaddou, Abdelilah Meddich, Chayma Ikan, Rachid Lahlali, Essaid Ait Barka, Mohammad-Reza Hajirezaei, Robin Duponnois, Marouane Baslam
Summary: This study demonstrated that indigenous biostimulants can enhance the fitness of sweet corn plants under varying levels of salinity. These biostimulants not only improved plant growth and metabolism, but also enhanced soil structure and mineral composition. Therefore, this research highlights the importance of using indigenous biostimulants to mitigate salinity-related threats to agricultural land and ensure global food security.
Article
Microbiology
Nadia Lyousfi, Ikram Legrifi, Nabil Ennahli, Abdelali Blenzar, Said Amiri, Salah-Eddine Laasli, Nadia Handaq, Zineb Belabess, Essaid Ait Barka, Rachid Lahlali
Summary: A study was conducted to evaluate the antifungal activity of commonly used food additives against the brown rot disease caused by Monilinia fructigena. Most additives showed significant inhibition of fungal growth, with alkaline additives such as sodium bicarbonate and copper sulphate being the most effective. However, some acidic additives like ammonium carbonate and citric acid were less effective. The study also found that temperature played a role in the effectiveness of the additives, with lower temperatures (4°C) enhancing their efficiency.
Article
Horticulture
Nabil Radouane, Hasnae Adadi, Said Ezrari, Jihane Kenfaoui, Zineb Belabess, Fouad Mokrini, Essaid Ait Barka, Rachid Lahlali
Summary: This study identified promising halophilic bacteria from diverse saline ecosystems for controlling postharvest diseases in citrus fruits. Two strains, Bacillus amyloliquefaciens EAM1 and B. amyloliquefaciens ER2, demonstrated exceptional inhibitory effects against green and blue citrus molds, highlighting their potential as biocontrol agents.
Review
Biochemistry & Molecular Biology
Philippe Jeandet, Md. Sahab Uddin, Christophe Clement, Aziz Aziz, Cedric Jacquard, Haroon Khan, Muhammad Ajmal Shah, Essaid Ait Barka, Mattheos Koffas, Seyed Mohammad Nabavi, Eduardo Sobarzo-Sanchez, Jean-Hugues Renault
Summary: Although the resveratrol oligomers, which have higher biological activity than the monomers, have been overlooked due to the difficulty in obtaining sufficient quantities for in vivo evaluation, a synthetic and critical analysis of the methods used for their production has been presented. The most salient data regarding the approaches employed to prepare these high molecular-ordered stilbene oligomers of potential biomedical interest, including total synthesis, biomimetic approaches, or plant systems, have been gathered.
NATURAL PRODUCT REPORTS
(2023)
Article
Biology
Erika Samain, Jerome Duclercq, Essaid Ait Barka, Michael Eickermann, Cedric Ernenwein, Candice Mazoyon, Vivien Sarazin, Frederic Dubois, Thierry Aussenac, Sameh Selim
Summary: The present study shows that the efficiency of plant-growth-promoting rhizobacteria (PGPR) in promoting wheat growth and protecting against pathogens is influenced by the soil microbial communities. Inoculation of PGPR had a positive effect on root and aboveground dry biomass of wheat, depending on the wheat cultivar. The presence of Arthrobacter spp. mitigated the potential negative effect of PGPR on bacterial community and fostered root colonization by other beneficial bacterial strains.
