Pathogenicity of Fusarium spp. associated with diseases of Aleppo-pine seedlings in Algerian forest nurseries

Lazreg, F.; Belabid, L.; Sánchez, José González; Gallego, Eduardo; Bayaa, B.

doi:10.17221/65/2013-jfs

Cited by 15 publications

(16 citation statements)

References 24 publications

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“…These results suggest that one-year-old seedlings of P. sylvestris appeared to be resistant to F. oxysporum, F. tricinctum, F. poae, F. graminearum (A and D) and F. culmorum. In a previous study, preliminary assessment of the pathogenicity of pine seedlings in Petri dishes proved to be an effective method of determining the pathogenic capacity of Fusarium species prior to greenhouse trials [45]. As expected, the fifteen-day-old pine seedlings were more sensitive to the most of Fusarium species tested than one-year-old pine seedlings, in which root growth inhibition was less important.…”

Section: Virulence Of Other Fusarium Speciessupporting

confidence: 60%

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A Comparative Study of the Pathogenicity of Fusarium circinatum and other Fusarium Species in Polish Provenances of P. sylvestris L.

Davydenko

Nowakowska

Kałuski

et al. 2018

Forests

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The fungal pathogen Fusarium circinatum is the causal agent of Pine Pitch Canker (PPC), a disease which seriously affects different species of pine in forests and nurseries worldwide. In Europe, the fungus affects pines in northern Spain and Portugal, and it has also been detected in France and Italy. Here, we report the findings of the first trial investigating the susceptibility of Polish provenances of Scots pine, Pinus sylvestris L., to infection by F. circinatum. In a greenhouse experiment, 16 Polish provenances of Scots pine were artificially inoculated with F. circinatum and with six other Fusarium species known to infect pine seedlings in nurseries. All pines proved highly susceptible to PPC and displayed different levels of susceptibility to the other Fusarium spp. tested. The findings obtained indicate the potentially strong threat of establishment of an invasive pathogen such as F. circinatum following unintentional introduction into Poland.

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Section: Virulence Of Other Fusarium Speciessupporting

confidence: 60%

“…Fusarium spp. are commonly found to affect the roots of coniferous seedlings, causing damping-off and wilt in pine seedlings [44,45]. Our findings demonstrate that all of the Fusarium species tested successfully infected pine seedlings.…”

Section: Virulence Of Other Fusarium Speciesmentioning

confidence: 53%

A Comparative Study of the Pathogenicity of Fusarium circinatum and other Fusarium Species in Polish Provenances of P. sylvestris L.

Davydenko

Nowakowska

Kałuski

et al. 2018

Forests

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“…Aleppo pine seeds were surface disinfected by agitation in 2% NaOCl solution on a shaker at 120 rpm for 25 min, rinsed four times in sterile distilled water and dried on sterile filter paper. Seeds were wrapped in moistened, sterile cheesecloth, enclosed in Petri dishes of 12 cm diameter, and incubated at 25°C for 3 weeks (Lazreg et al 2014).…”

Section: Methodsmentioning

confidence: 99%

Root rot and damping-off of Aleppo pine seedlings caused by Pythium spp. in Algerian forest nurseries

Lazreg¹,

Belabid²,

Sánchez³

et al. 2016

J. For. Sci.

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Aleppo pine (Pinus halepensis Miller) is a common forest tree in the Mediterranean Region. Production of Aleppo pine seedlings is hindered by damping off and root rot diseases in cooler conditions of north-western Algeria, which significantly reduces the seedling emergence. is work was carried out to evaluate the pathogenicity of different Pythium Pringsheim species on Aleppo pine seedlings. Seventeen isolates of Pythium spp. were isolated from diseased seedlings, identified to the species level based on DNA sequence from the internal transcribed spacer region and their identity was confirmed on morphological basis. e obtained isolates were pathologically characterized in Petri dish and pot assays. Germination was significantly inhibited by the different Pythium spp. isolates. e highest inhibition was observed with Pythium ultimum Trow in Petri dish and pot assays. e reduction in root growth differed significantly between different isolates. e maximum reduction in root growth (92.2%) was observed for P. ultimum in Petri dish assay. e various isolates of Pythium showed a significant influence on root length, shoot length and vigour index. e maximum disease incidence (89.7%) was caused by P. ultimum. Our results indicated that Pythium spp. is commonly found on diseased seedlings, in most containers and bare-root nurseries.

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“…Seeds and seedlings of Abies sibirica. This part of the work followed modified methodological approach used in studies by Lazreg et al 26 , Alghuthaymi et al 27 , and Güney & Güldür 28 . Seeds of A. sibirica were sterilised in 0.5% dilution of KMnO 4 for 120 min, washed with sterile water, dried in-between layers of sterile filter paper and sawn into plastic 350 ml volume containers, size 107 × 82 × 70 mm (length × breadth × height), filled with heat-sterilised sand intermixed with wood chips of size 20 × 10 × 3 mm.…”

Section: Molecular Identification and Phylogenetic Analyses Dna Isolmentioning

confidence: 99%

Occurrence and pathogenicity of Corinectria spp. – an emerging canker disease of Abies sibirica in Central Siberia

Pavlov

Vasaitis

Litovka

et al. 2020

Sci Rep

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During recent years, a new disease of Siberian fir (A. sibirica) emerged in Central Siberia, exhibiting symptoms of stem/branch deformation, cambium necrosis, and dieback of branches and twigs, the causal agent remaining unknown. The aim was to identify agent of the disease and to investigate its pathogenicity to A. sibirica and Norway spruce (Picea abies). Symptomatic tissues of fir were subjected to pure culture isolation of anticipated pathogen(s). Obtained isolates were subjected to molecular identification, phylogenetic analyses, and pathogenicity tests with A. sibirica saplings, and seeds and seedlings of A. sibirica and P. abies. The study demonstrated that, (i) most commonly isolated fungus from canker wounds of A. sibirica exhibited Acremonium-like anamorphs; (ii) phylogeny demonstrated that investigated fungi belong to genus Corinectria, but are genetically well separated from other worldwide known Corinectria spp.; (iii) one species of isolated fungi has the capacity to cause the disease and kill A. sibirica saplings and seedlings, but also seedlings of P. abies. Guidelines for future research were defined in order to generate needed information on species description, its origin and ecology, and estimation of potential risks upon the eventual invasion of the pathogen to new geographic areas, in particular of Europe. Abies sibirica Ledeb., the Siberian fir, is a very widespread tree species: the range of its native distribution covers a huge geographic area, stretching from Northern Europe-Russia (starting east of the Volga River), through Siberia to northern China, Mongolia, and the Russian Far East, reaching north up to 67°40′ Northern latitude (http://www.agroatlas.ru/en/content/related/Abies_sibirica/map/index.html) (Fig. 1). There, A. sibirica forms extensive forests on the northern plains and on cool wet mountainsides, growing on soils that are usually of alluvial origin, podzolic, calcareous, well drained and free of permafrost; in the mountains, reaching elevations up to 2000 metres. It is an economically important timber species, extensively harvested from vast natural stands for use in construction, pulp etc.; the tree also has local medicinal uses 1. Notably, native range of A. sibirica in the European part of Russia (west of Ural Mountains reaching the Volga River) overlaps with that of Norway spruce (Picea abies (L.) Karst.) (Fig. 1), one of the most economically important timber producing tree species of Europe. During recent years, a new disease of A. sibirica emerged in Central Siberia (Fig. 1), exhibiting symptoms of stem/branch deformation, cambium necrosis, and dieback of branches and twigs, with the subsequent development on those of round red fungal fruitbodies (Fig. 2A-C). The disease is typically observed on relatively young re-growth trees, and often results in their death. The first symptoms of the disease have been observed in the year 2006 in the eastern Sayan Mountains (N54°29′13″; E93°27′11″; elevation 700 m), and after following two years it was repeatedly observed within ...

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Pathogenicity of Fusarium spp. associated with diseases of Aleppo-pine seedlings in Algerian forest nurseries

Cited by 15 publications

References 24 publications

A Comparative Study of the Pathogenicity of Fusarium circinatum and other Fusarium Species in Polish Provenances of P. sylvestris L.

A Comparative Study of the Pathogenicity of Fusarium circinatum and other Fusarium Species in Polish Provenances of P. sylvestris L.

Root rot and damping-off of Aleppo pine seedlings caused by Pythium spp. in Algerian forest nurseries

Occurrence and pathogenicity of Corinectria spp. – an emerging canker disease of Abies sibirica in Central Siberia

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