Influence of the nitrogen source on the tolerance of Actinidia chinensis to Pseudomonas syringae pv. actinidiae

Silva, M. Nunes da; Fernandes, A.P.G.; Vasconcelos, Manuel; Valente, Luísa M.P.; Carvalho, S.M.P.

doi:10.17660/actahortic.2022.1332.14

Cited by 2 publications

(2 citation statements)

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“…In Actinidia -Psa, for example, favoring less dense canopies and avoiding excessive plant vigor have been pointed out as important aspects to consider in places with higher pathogen pressure ( Mauri et al., 2016 ). In addition, optimized nutritional regimens should also be developed aiming at increasing Actinidia tolerance to Psa ( Mauri et al., 2016 ; Gu et al., 2021 ; Nunes da Silva et al., 2021b ). These aspects have been addressed in recent reviews ( Ristaino et al., 2021 ; Nunes da Silva et al., 2022b ).…”

Section: State-of-the-art On Sustainable Disease Management Tools To ...mentioning

confidence: 99%

Scientific and technological advances in the development of sustainable disease management tools: a case study on kiwifruit bacterial canker

Santos,

Nunes da Silva,

Vasconcelos

et al. 2024

Front. Plant Sci.

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Plant disease outbreaks are increasing in a world facing climate change and globalized markets, representing a serious threat to food security. Kiwifruit Bacterial Canker (KBC), caused by the bacterium Pseudomonas syringae pv. actinidiae (Psa), was selected as a case study for being an example of a pandemic disease that severely impacted crop production, leading to huge economic losses, and for the effort that has been made to control this disease. This review provides an in-depth and critical analysis on the scientific progress made for developing alternative tools for sustainable KBC management. Their status in terms of technological maturity is discussed and a set of opportunities and threats are also presented. The gradual replacement of susceptible kiwifruit cultivars, with more tolerant ones, significantly reduced KBC incidence and was a major milestone for Psa containment – which highlights the importance of plant breeding. Nonetheless, this is a very laborious process. Moreover, the potential threat of Psa evolving to more virulent biovars, or resistant lineages to existing control methods, strengthens the need of keep on exploring effective and more environmentally friendly tools for KBC management. Currently, plant elicitors and beneficial fungi and bacteria are already being used in the field with some degree of success. Precision agriculture technologies, for improving early disease detection and preventing pathogen dispersal, are also being developed and optimized. These include hyperspectral technologies and forecast models for Psa risk assessment, with the latter being slightly more advanced in terms of technological maturity. Additionally, plant protection products based on innovative formulations with molecules with antibacterial activity against Psa (e.g., essential oils, phages and antimicrobial peptides) have been validated primarily in laboratory trials and with few compounds already reaching field application. The lessons learned with this pandemic disease, and the acquired scientific and technological knowledge, can be of importance for sustainably managing other plant diseases and handling future pandemic outbreaks.

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Section: State-of-the-art On Sustainable Disease Management Tools To ...mentioning

confidence: 99%

Scientific and technological advances in the development of sustainable disease management tools: a case study on kiwifruit bacterial canker

Santos,

Nunes da Silva,

Vasconcelos

et al. 2024

Front. Plant Sci.

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“…deliciosa Hayward, high nitrate rates (24 ppm, two times/week) positively influenced plant responses against Psa, whereas ammonium nitrate showed higher disease incidence and severity, increasing endophytic Psa populations [50]. Recently, it was demonstrated that Hayward plants grown with nitrate as the sole N source showed no visual disease symptoms and had a lower Psa endophytic population in comparison with plants receiving ammonium, which led to the appearance of typical Psa-induced leaf spotting, lower total chlorophyll content, and impaired photosynthetic capacity [129]. With nitrate supply, plants accumulated higher phosphorus (P), potassium (K), magnesium (Mg), calcium (Ca), and iron (Fe) contents, which possibly contributed to a more balanced mineral nutrition and increased tolerance to Psa, whereas with ammonium, the higher N content observed in plant tissues may have favored bacterial multiplication [129].…”

Section: Agronomical Practicesmentioning

confidence: 99%

Mitigation of Emergent Bacterial Pathogens Using Pseudomonas syringae pv. actinidiae as a Case Study—From Orchard to Gene and Everything in Between

Silva

Santos

Vasconcelos

et al. 2022

Crops

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Globalization propelled human migration and commercial exchanges at the global level, but woefully led to the introduction of non-indigenous organisms into several agroecological systems. These include pathogenic bacteria with devastating consequences for numerous crops of agronomical importance for food production worldwide. In the last decade, research efforts have focused on these noxious organisms, aiming to understand their evolutionary processes, degree of pathogenicity, and mitigation strategies, which have allowed stakeholders and policymakers to develop evidence-based regulatory norms to improve management practices and minimize production losses. One of these cases is the bacterium Pseudomonas syringae pv. actinidiae (Psa), the causal agent of the kiwifruit bacterial canker, which has been causing drastic production losses and added costs related to orchard management in the kiwifruit industry. Although Psa is presently considered a pandemic pathogen and far from being eradicated, the implementation of strict regulatory norms and the efforts employed by the scientific community allowed the mitigation, to some extent, of its negative impacts through an integrated pest management approach. This included implementing directive guidelines, modifying cultural practices, and searching for sources of plant resistance. However, bacterial pathogens often have high spatial and temporal variability, with new strains constantly arising through mutation, recombination, and gene flow, posing constant pressure to agroecosystems. This review aims to critically appraise the efforts developed to mitigate bacterial pathogens of agronomical impact, from orchard management to genome analysis, using Psa as a case study, which could allow a prompter response against emerging pathogens in agroecosystems worldwide.

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Influence of the nitrogen source on the tolerance of Actinidia chinensis to Pseudomonas syringae pv. actinidiae

Cited by 2 publications

References 20 publications

Scientific and technological advances in the development of sustainable disease management tools: a case study on kiwifruit bacterial canker

Scientific and technological advances in the development of sustainable disease management tools: a case study on kiwifruit bacterial canker

Mitigation of Emergent Bacterial Pathogens Using Pseudomonas syringae pv. actinidiae as a Case Study—From Orchard to Gene and Everything in Between

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