Cold activity and tolerance of the entomopathogenic fungus Tolypocladium spp. to UV-B irradiation and heat

Santos, Maiara P.; Dias, Luciana Pereira Pinto; Ferreira, Paulo César Peregrino; Pasin, Liliana Auxiliadora Avelar Pereira; Rangel, Drauzio E.N.

doi:10.1016/j.jip.2011.09.001

Cited by 42 publications

(14 citation statements)

References 39 publications

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“…other than B. bassiana (Fernandes et al 2007), and Tolypocladium spp. (Santos et al 2011). Great inter-and intraspecies variability in susceptibility to solar irradiation has been reported.…”

Section: Seeking Fungal Isolates Naturally Tolerant To Uvmentioning

confidence: 99%

Tolerance of entomopathogenic fungi to ultraviolet radiation: a review on screening of strains and their formulation

et al. 2015

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Ultraviolet radiation from sunlight is probably the most detrimental environmental factor affecting the viability of entomopathogenic fungi applied to solar-exposed sites (e.g., leaves) for pest control. Most entomopathogenic fungi are sensitive to UV radiation, but there is great inter- and intraspecies variability in susceptibility to UV. This variability may reflect natural adaptations of isolates to their different environmental conditions. Selecting strains with outstanding natural tolerance to UV is considered as an important step to identify promising biological control agents. However, reports on tolerance among the isolates used to date must be analyzed carefully due to considerable variations in the methods used to garner the data. The current review presents tables listing many studies in which different methods were applied to check natural and enhanced tolerance to UV stress of numerous entomopathogenic fungi, including several well-known isolates of these fungi. The assessment of UV tolerance is usually conducted with conidia using dose-response methods, wherein the UV dose is calculated simply by multiplying the total irradiance by the period (time) of exposure. Although irradiation from lamps seldom presents an environmentally realistic spectral distribution, laboratory tests circumvent the uncontrollable circumstances associated with field assays. Most attempts to increase field persistence of microbial agents have included formulating conidia with UV protectants; however, in many cases, field efficacy of formulated fungi is still not fully adequate for dependable pest control.

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Section: Seeking Fungal Isolates Naturally Tolerant To Uvmentioning

confidence: 99%

Tolerance of entomopathogenic fungi to ultraviolet radiation: a review on screening of strains and their formulation

et al. 2015

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“…For example, the entomopathogenic fungus Tolypocladium sp. is UV-B tolerant [15]. Peatland amoebae are more abundant in ambient than reduced UV-B and diversity of some species increases under ambient UV-B [16].…”

Section: Effect Of Elevated Uv Radiation On Soilsmentioning

confidence: 99%

Effect of Elevated CO₂, O₃, and UV Radiation on Soils

Formánek

Rejšek

Vranová

2014

The Scientific World Journal

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In this work, we have attempted to review the current knowledge on the impact of elevated CO2, O3, and UV on soils. Elevated CO2 increases labile and stabile soil C pool as well as efficiency of organic pollutants rhizoremediation and phytoextraction of heavy metals. Conversely, both elevated O3 and UV radiation decrease inputs of assimilates to the rhizosphere being accompanied by inhibitory effects on decomposition processes, rhizoremediation, and heavy metals phytoextraction efficiency. Contrary to elevated CO2, O3, or UV-B decreases soil microbial biomass, metabolisable C, and soil Nt content leading to higher C/N of soil organic matter. Elevated UV-B radiation shifts soil microbial community and decreases populations of soil meso- and macrofauna via direct effect rather than by induced changes of litter quality and root exudation as in case of elevated CO2 or O3. CO2 enrichment or increased UV-B is hypothesised to stimulate or inhibit both plant and microbial competitiveness for soluble soil N, respectively, whereas O3 favours only microbial competitive efficiency. Understanding the consequences of elevated CO2, O3, and UV radiation for soils, especially those related to fertility, phytotoxins inputs, elements cycling, plant-microbe interactions, and decontamination of polluted sites, presents a knowledge gap for future research.

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“…(Baldrian et al, 2011), etc. Several identified species are entomopathogenic according to the literature: Beauveria geodes, Tolypocladium geodes (Santos et al, 2011), Metarhizium anisopliae (Leger et al, 1992), Paecilomyces carneus, P. marquandii (Sevim et al, 2010), Isaria fumosorosea (Ayala-Zermeño et al, 2011), Lecanicillium kalimantanense (Sukarno et al, 2009). Bionectria ochroleuca is associated with soil mites (Renker et al, 2005).…”

Section: Taxonomic Analysis Of Soil Fungal Populationsmentioning

confidence: 99%

Comparison of soil microorganism abundance and diversity in stands of European aspen (Populus tremulaL.) and hybrid aspen (Populus tremuloidesMichx. ×P. tremulaL.)

Grantina-Ievina¹,

Saulite²,

Zeps³

et al. 2011

Estonian J. Ecol.

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The use of short rotation forest tree species is increasing worldwide. The hybrid aspen (Populus tremuloides Michx. × P. tremula L.) is one of the suitable tree species under the climatic conditions of the Baltic region. The cultivation of these trees on former agricultural soils differs from agricultural practices with reduced soil tillage and is characterized by increased demand of nutrients, which in long term can cause changes in the soil microbial populations. The aim of our investigation was to compare soil microbial populations in hybrid aspen and European aspen (P. tremula L.) stands in four sampling plots with aspen age ranging from 10 to 46 years. The abundance and diversity of soil microbial populations were estimated by enumeration of microorganisms (plate counts on three microbiological media) and by molecular methods (PCR, ARDRA, molecular identification of fungal isolates). Results showed that during long cultivation periods hybrid aspens reduced the number of culturable bacteria. The number of culturable filamentous fungi was statistically significantly increased only in one sampling plot in soil samples from hybrid aspen clones at a depth of 16-30 cm and only on one microbiological cultivation medium. The same was detected also with molecular methods in the case of fungal diversity estimated by Shannon-Weaver diversity indices in this sampling plot. None of the other characteristics of soil microbial populations, such as the number of yeasts and maltose utilizing bacteria on MEA, the number of yeasts and filamentous fungi on RBA, the total amount of soil DNA, fungal and bacterial diversity estimated by molecular biology methods, and species composition of filamentous fungi, was significantly affected by hybrid aspen. The identified filamentous fungi represented the following genera: Acremonium, and others. The main conclusion was that cultivation of hybrid aspen as a short rotation forest tree in the Baltic region would not significantly affect the abundance and diversity of saprophytic soil microorganisms.

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Cold activity and tolerance of the entomopathogenic fungus Tolypocladium spp. to UV-B irradiation and heat

Cited by 42 publications

References 39 publications

Tolerance of entomopathogenic fungi to ultraviolet radiation: a review on screening of strains and their formulation

Tolerance of entomopathogenic fungi to ultraviolet radiation: a review on screening of strains and their formulation

Effect of Elevated CO₂, O₃, and UV Radiation on Soils

Comparison of soil microorganism abundance and diversity in stands of European aspen (Populus tremulaL.) and hybrid aspen (Populus tremuloidesMichx. ×P. tremulaL.)

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Cold activity and tolerance of the entomopathogenic fungus Tolypocladium spp. to UV-B irradiation and heat

Cited by 42 publications

References 39 publications

Tolerance of entomopathogenic fungi to ultraviolet radiation: a review on screening of strains and their formulation

Tolerance of entomopathogenic fungi to ultraviolet radiation: a review on screening of strains and their formulation

Effect of Elevated CO2, O3, and UV Radiation on Soils

Comparison of soil microorganism abundance and diversity in stands of European aspen (Populus tremulaL.) and hybrid aspen (Populus tremuloidesMichx. ×P. tremulaL.)

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Effect of Elevated CO₂, O₃, and UV Radiation on Soils