Visualization of Phytophthora palmivora Infection in Oil Palm Leaflets with Fluorescent Proteins and Cell Viability Markers

Ochoa, José Boix; Herrera, Mariana; Navia, Mónica; Romero, Hernán Mauricio

doi:10.5423/ppj.oa.02.2018.0034

Cited by 5 publications

(2 citation statements)

References 43 publications

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“…In 2008, Phytophthora palmivora (Butler) was identified as the causal agent of BR [14]. Biological studies on P. palmivora describe the infection process, infection times, entry sites, and colonization of bud tissue [15][16][17]. Moreover, the physiological and biochemical responses of oil palm to the pathogen have been recorded [18].…”

Section: Introductionmentioning

confidence: 99%

An Integrated Disease Management of Oil Palms Affected by Bud Rot Results in Shorter Recovery Times

Tupaz-Vera¹,

Ayala-Diaz²,

Rincón³

et al. 2021

Agronomy

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Bud rot is a limiting disease that affects most oil palm crops destroying thousands of hectares in Latin America. Bud rot (BR) is caused by the oomycete Phytophthora palmivora (Butler). Integrated disease management (IDM) technology has been used to control the disease, which slows down the progress of the disease, allowing palm recovery. However, the effect of this technology on the recovery speed of treated palms is not well known. We studied the time taken for palm recovery from BR under the integrated management approach. The study was carried out on 21 oil palm commercial cultivars dura × pisifera (D × P) and O × G hybrids affected by BR in the Colombian oil palm Central Zone. The analysis included different recovery times (RT), the severity degree, time of the year (wet or dry season), number of reinfections, and cultivar. The RT of bud rot-affected palms ranges from 103 to 315 days, with an average of 202.8 days when an IDM is used. RT was lower than that reported in the diseased palms without IDM (540 days). According to the severity degree, the RT lasted 202 days for severity degree 1, 198 days for severity degree 2, and 222 with severity degree 3 and 4. In comparison, there was no significant difference between dry and rainy seasons in RT. Differences between cultivars were found; however, under IDM, all cultivars showed low RT. The IDM has a positive impact in reducing the RT to BR. Low RT has indirect effects minimizing potential yield losses, improving the number of successfully recovered palms, and reducing the risk of disease dissemination.

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Section: Introductionmentioning

confidence: 99%

An Integrated Disease Management of Oil Palms Affected by Bud Rot Results in Shorter Recovery Times

Tupaz-Vera¹,

Ayala-Diaz²,

Rincón³

et al. 2021

Agronomy

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“…Phytophthora palmivora is an example of a tropical species with a broad host range. First described on palm trees in the early 1900's, it has since been described on numerous other hosts such as coconut, papaya, and cacao (Ochoa et al 2019, Perrine-Walker 2020. Like other Phytophthora spp., it thrives in humid conditions, and it can spread quickly through asexual spores (box 1.1).…”

Section: Phytophthora Speciesmentioning

confidence: 99%

The dynamic organization of the actin and tubulin cytoskeleton in Phytophthora pathogens

Kots¹

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The oomycete Phytophthora infestans is the cause of late blight in potato and tomato. It is a devastating pathogen and there is an urgent need to design alternative strategies to control the disease. To find novel potential drug targets we study the actin cytoskeleton, using Lifeact-GFP expressing P. infestans for high resolution live cell imaging of the actin cytoskeleton during development. Previously, we identified actin plaques as structures that are unique for oomycetes. Here we describe two additional novel actin configurations; one associated with plug deposition in germ tubes and the other with appressoria, infection structures formed prior to host cell penetration. Plugs are composed of cell wall material that is deposited in hyphae emerging from cysts to seal off the cytoplasm-depleted base after cytoplasm retraction towards the growing tip. Preceding plug formation there was a typical local actin accumulation and during plug deposition actin remained associated with the leading edge. In appressoria, formed either on an artificial surface or upon contact with plant cells, we observed a novel aster-like actin configuration that was localized at the contact point with the surface. Our findings strongly suggest a role for the actin cytoskeleton in plug formation and plant cell penetration.

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Transformation systems, gene silencing and gene editing technologies in oomycetes

Ghimire

Saraiva

Andersen

et al. 2022

Fungal Biology Reviews

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Visualization of Phytophthora palmivora Infection in Oil Palm Leaflets with Fluorescent Proteins and Cell Viability Markers

Cited by 5 publications

References 43 publications

An Integrated Disease Management of Oil Palms Affected by Bud Rot Results in Shorter Recovery Times

An Integrated Disease Management of Oil Palms Affected by Bud Rot Results in Shorter Recovery Times

The dynamic organization of the actin and tubulin cytoskeleton in Phytophthora pathogens

Transformation systems, gene silencing and gene editing technologies in oomycetes

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