Pathogenicity of Pochonia species on eggs of Meloidogyne javanica

Moosavi, Mohammad Reza; Zare, Rasoul; Zamanizadeh, Hamid Reza; Fatemy, S.

doi:10.1016/j.jip.2010.03.002

Cited by 39 publications

(20 citation statements)

References 36 publications

(47 reference statements)

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“…The Arthrobotrys strains tested were more active than the Pochonia ones, at least in the experimental condition where the preys considered were nematode adults or larvae stages; this observation can be explained by the fact that P. chlamydosporia and P. bulbillosa are particularly active against the eggs as reported by the literature . This underlines also the good sensitivity of the assay used, that was able to indicate the best nematophagous strain for killing nematodes (adults and larvae stages).…”

Section: Discussionsupporting

confidence: 64%

“…bulbillosa caused an average nematodes' net mortality of the 12% compared to the control's death rate. Association with nematodes and activity data concerning this species are scarce and are reported only for nematode eggs [17,18]. Nematophagous activity of P. bulbillosa reported in this paper represents a new datum, giving new insights on the biology of the fungus.…”

Section: Discussionmentioning

confidence: 84%

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In vitro evaluation of nematophagous activity of fungal isolates

Nicola

Tosi

Savini

2013

J. Basic Microbiol.

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Four filamentous fungi associated with nematodes were isolated and identified from litter samples collected in the Integral Natural Reserve "Bosco Siro Negri" (PV, Italy): Arthrobotrys dactyloides, Arthrobotrys oligospora var. oligospora, Pochonia bulbillosa, and Pochonia chlamydosporia var. catenulata. Their capacity to break down the nematode population was evaluated in vitro by means of simple and reproducible multiwell plates method. All fungal strains were able to cause a death-rate significantly different from the controls (p < 0.05). Precisely, A. dactyloides caused, on average, a 26% death rate increase in the nematode population compared to the control, A. oligospora var. oligospora 25%, P. bulbillosa 12%, and P. chlamidosporia var. catenulata 17%. The method has also allowed to determine the more active fungi as regards the prey's life cycle stage. The most active strains against nematodes (adults) were A. dactyloides and A. oligospora var. oligospora, known to attack adults or larval stages by means of tridimensional traps. On the contrary P. bulbillosa and P. chlamydosporia, known to attack mainly the nematode life stage of cysts, showed lower activity against adult nematodes.

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Section: Discussionsupporting

confidence: 64%

Section: Discussionmentioning

confidence: 84%

In vitro evaluation of nematophagous activity of fungal isolates

Nicola

Tosi

Savini

2013

J. Basic Microbiol.

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“…The evaluated isolate of Pochonia bulbillosa (FI 2480) exhibited high virulence on T. peregrinus (72% mortality on the 10th day) even when this genus is a known pathogen of nematodes (Moosavi, Zare, Zamanizadeh, & Fatemy, ). This mortality percentage is greater than the one found by Kim et al (), who recorded a very low virulence (less than 20% insect mortality) when Pochonia was inoculated on Tenebrio molitor Linnaeus (Coleoptera) larvae and Riptortus pedestris Fabricius (Hemiptera) 10 days after treatment.…”

Section: Discussionmentioning

confidence: 99%

Entomopathogenic fungi naturally infecting the eucalypt bronze bug, Thaumastocoris peregrinus (Heteroptera: Thaumastocoridae), in Uruguay

Corallo

Simeto

Martínez

et al. 2019

J Applied Entomology

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Thaumastocoris peregrinus Carpintero & Dellapé (Heteroptera: Thaumastocoridae) is a sap‐sucking insect that feeds on leaves of Eucalyptus. In Uruguay, it was detected in 2008 causing significant economic losses in Eucalyptus plantations. At present, there is no efficient control for this pest; thus, the use of biological control agents seems to be an environmentally friendly alternative to reduce the damage caused by this insect. The aims of this study were to isolate and identify the species of entomopathogenic fungi that naturally infect T. peregrinus in Uruguay and to characterize and select the most virulent isolates towards this pest. Individuals of T. peregrinus were collected in eight Eucalyptus plantations infested by the pest. The entomopathogenic fungi were isolated and identified by observation of their micromorphological characteristics, and their identity was confirmed by molecular methods. The pathogenicity and virulence against T. peregrinus of the isolated entomopathogenic fungi were evaluated. Isolates causing the highest insect mortality were selected to evaluate the effect of temperature and water activity on conidial viability. Entomopathogenic fungi were found in very low number with the prevalence of less than 3%. Isolates corresponded to Beauveria, Fusarium, Isaria, Lecanicillium, Paecilomyces, Pochonia, Purpureocillium and Simplicillium genera. Two species, B. pseudobassiana and L. muscarium, were first recorded in Uruguay. Among all the tested species, an isolate of B. bassiana (FI 2403) showed the highest virulence followed by an isolate of B. pseudobassiana. The isolate of B. bassiana presented the highest percentage of spore germination at the three temperatures and the highest viability at low water activities. Isolate FI 2403 was selected as a promissory candidate for the development of a commercial formulation against T. peregrinus.

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“…'Early-Urbana') starting from a single nematode egg mass previously identified as M. javanica (Moosavi et al 2010, Moosavi 2012. The nematode infected roots were cut into 0.5-1 cm pieces and shaken up for 2-3 min in 0.5% sodium hypochlorite solution followed by rinsing over 60 and 20 μm sieves (Hussey & Barker 1973).…”

Section: Preparation Of M Javanica Inoculummentioning

confidence: 99%

Damage of the Root-Knot Nematode Meloidogyne javanica to Bell Pepper, Capsicum annuum

Moosavi

2015

J Plant Dis Prot

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Root-knot nematodes are the most economically important nematodes on a worldwide basis. Prediction of the crop loss that a certain population density of nematode may cause is of importance to decide whether to cultivate a plant or not. It is also of use for choosing the most suitable managing strategies. A pot experiment was devised to determine the damage potential of an Iranian population of Meloidogyne javanica on pepper (cv. California Wonder). Two leaves seedlings were planted in 3 kg pots contain different inoculum level of 0, 0. 125, 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64, 128, 256 and 512 eggs and juveniles g -1 sandy loam soil. Shoot weight, yield and nematode reproduction rate were negatively correlated with initial inoculum level of nematode while the root response was variable. Seinhorst's model fitted the data of yield and shoot weight and a tolerance limit of 0.5 and 0.28 eggs and juveniles g -1 soil was respectively estimated. The minimum relative yield and shoot weight was 0.16 and 0.3, respectively. The damage threshold was estimated of 1.8 eggs and juveniles g -1 soil by Seinhorst's model. The maximum multiplication rate and the equilibrium density of M. Javanica were estimated as 708.31 and 159.65 (eggs and juveniles g -1 soil), respectively.

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Pathogenicity of Pochonia species on eggs of Meloidogyne javanica

Cited by 39 publications

References 36 publications

In vitro evaluation of nematophagous activity of fungal isolates

In vitro evaluation of nematophagous activity of fungal isolates

Entomopathogenic fungi naturally infecting the eucalypt bronze bug, Thaumastocoris peregrinus (Heteroptera: Thaumastocoridae), in Uruguay

Damage of the Root-Knot Nematode Meloidogyne javanica to Bell Pepper, Capsicum annuum

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