Biocidal activity of plant-derived compounds against Phytophthora infestans: An alternative approach to late blight management

Najdabbasi, Neda; Mirmajlessi, Seyed Mahyar; Dewitte, Kevin; Landschoot, Sofie; Mänd, Marika; Audenaert, Kris; Ameye, Maarten; Haesaert, Geert

doi:10.1016/j.cropro.2020.105315

Cited by 22 publications

(26 citation statements)

References 63 publications

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“…Among the P. infestans genotypes tested in this study, EU-13-A2 was the most pathogenic genotype, as it showed higher sporulation intensity and DSI than other genotypes. This agrees with the results of Najdabbasi et al [18], who concluded that EU-13-A2 was the most aggressive genotype in terms of aggressiveness and sporulation intensity on both potato tubers and leaves. The European EU-13-A2 has been introduced as a dominant population of P. infestans in Europe since 2004, where genotypes EU-1-A1 and EU-6-A1 had continuously existed in the population for over a decade [66][67][68].…”

Section: Discussionsupporting

confidence: 93%

“…To ensure aggressiveness had not been lost, they were regularly transferred to potato slices (cv. Bintje) for host passage, as described in an earlier study by Najdabbasi et al [18]. Cultures of P. infestans were grown on rye-B agar (containing 0.005% b-sitosterol) (Merck, Darmstadt, Germany) at 18 • C in the dark for 12-14 days before use.…”

Section: Phytophthora Infestans Genotypesmentioning

confidence: 99%

“…To examine the potential impact of the pre-exposure of potato plants to Z-3-HAC on subsequent infection with P. infestans, detached leaflet bioassays were conducted at two different time points (1 and 24 h after exposure), according to Najdabbasi et al [18]. Briefly, three composed leaves, equivalent to fifteen leaflets per treatment, pre-exposed to the Z-3-HAC, were cut and set abaxial surface down on foam inside the plastic trays (60 × 50 × 20 cm) containing distilled water.…”

Section: Biocidal Activity Of Z-3-hac In Vivomentioning

confidence: 99%

“…However, yield stability remains the main challenge for farming systems [16]. Although the breeding of resistant plant varieties is the top priority, the development of biocontrol practices has also been proposed as an alternative sustainable strategy to manage P. infestans [13,17,18].…”

Section: Introductionmentioning

confidence: 99%

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Green Leaf Volatile Confers Management of Late Blight Disease: A Green Vaccination in Potato

Najdabbasi

Mirmajlessi

Dewitte

et al. 2021

JoF

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Yield losses of crops due to plant pathogens are a major threat in all agricultural systems. In view of environmental issues and legislative limitations for chemical crop protection products, the need to design new environmentally friendly disease management strategies has gained interest. Despite the unique capability of green leaf volatiles (GLVs) to suppress a broad spectrum of plant pathogens, their capacity to control the potato late-blight-causing agent Phytophthora infestans has not been well studied. This study addresses the potential role of the GLV Z-3-hexenyl acetate (Z-3-HAC) in decreasing the severity of late blight and the underlying gene-based evidence leading to this effect. Nine-week-old potato plants (Solanum tuberosum L.) were exposed to Z-3-HAC before they were inoculated with P. infestans genotypes at different time points. These pre-exposed potato plants exhibited slower disease development after infection with the highly pathogenic genotype of P. infestans (EU-13-A2) over time. Qualitative assessment showed that the exposed, infected plants possessed significantly lower sporulation intensity and disease severity compared to the control plants. Hypersensitive response (HR)-like symptoms were observed on the treated leaves when inoculated with different pathogen genotypes. No HR-like lesions were detected on the untreated leaves after infection. It was shown that the transcript levels of several defense-related genes, especially those that are involved in reactive oxygen species (ROS) production pathways were significantly expressed in plants at 48 and 72 h postexposure to the Z-3-HAC. The current work provides evidence on the role of Z-3-HAC in the increased protection of potato plants against late blight through plant immunity and offers new opportunities for the sustainable control of potato diseases.

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Section: Discussionsupporting

confidence: 93%

Section: Phytophthora Infestans Genotypesmentioning

confidence: 99%

Section: Biocidal Activity Of Z-3-hac In Vivomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Green Leaf Volatile Confers Management of Late Blight Disease: A Green Vaccination in Potato

Najdabbasi

Mirmajlessi

Dewitte

et al. 2021

JoF

Self Cite

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“…Bintje) were planted in pots (4 L) comprising standard commercial potting substrate (NPK 14-16-18, pH 5-6.5, organic-dry matters: 25-20%) and maintained under optimal greenhouse conditions at 18 • C and 16 h photoperiod. P. infestans genotype EU-13 grown on rye-B agar (supplemented with 0.005% b-sitosterol) (Merck, Darmstadt, Germany) was subcultured on V8-juice medium and incubated at 18 • C under fluorescent light with a 16 h photoperiod for seven days [40]. Sporangial suspensions were prepared by scraping the culture surface as previously described by Najdabbasi et al [40].…”

Section: Plant and Pathogen Materialsmentioning

confidence: 99%

Combination of Potassium Phosphite and Reduced Doses of Fungicides Encourages Protection against Phytophthora infestans in Potatoes

et al. 2022

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Late blight caused by the oomycete Phytophthora infestans is considered the biggest threat to potato farming worldwide. For susceptible cultivars, the disease is often managed by frequent applications of fungicides to reduce yield loss. The use of bio-based compounds that interfere with biologically active systems is an innovative strategy for improving disease management. In the present work, the control of P. infestans infection on potatoes by potassium phosphite (KPhi) combined with recommended and reduced doses of active ingredients (Ais) from different fungicides was evaluated. The protective effects of different combinations were initially assessed in vivo and subsequently compared with a greenhouse screening. The active ingredients cyazofamid (CFD) and mancozeb (MCB), used at recommended and reduced doses, were less effective at reducing P. infestans infections than when combined with KPhi. In greenhouse trials, CFD, mandipropamid (MPD) and MCB at recommended doses were the most effective treatments when combined with KPhi; meanwhile, the combination of KPhi with azoxystrobin (AZ), benthiavalicarb-isopropyl/mancozeb (ISO/MCB), and CFD at reduced doses exhibited strong protective activity compared to other similar combinations. This decreased the severity of infection by P. infestans up to ~89%. Greenhouse experiments also demonstrated that a combination of KPhi and CFD at both doses caused the highest reduction in disease severity (up to ~90%) within 35 days of infection. In microplot experiments, KPhi delayed the progression of late blight in susceptible potato varieties; therefore, in the combined treatments AUDPC values were significantly lower than those obtained after applications with CFD doses, providing sufficient protection against late blight. Our data suggest that optimizing the formulation with addition of KPhi could result in a lower recommended dose. This would result in a reduction of the active compounds of the fungicides in potato farming. Furthermore, the impact of KPhi on late blight development makes it a potential component for incorporation into an integrated pest management system.

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The efficacy of dry medicinal plant powders against rice diseases

et al. 2022

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Biocidal activity of plant-derived compounds against Phytophthora infestans: An alternative approach to late blight management

Cited by 22 publications

References 63 publications

Green Leaf Volatile Confers Management of Late Blight Disease: A Green Vaccination in Potato

Green Leaf Volatile Confers Management of Late Blight Disease: A Green Vaccination in Potato

Combination of Potassium Phosphite and Reduced Doses of Fungicides Encourages Protection against Phytophthora infestans in Potatoes

The efficacy of dry medicinal plant powders against rice diseases

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