Monitoramento de &lt;i&gt;Metarhizium &lt;/i&gt;spp. (Hypocreales: Clavicipitaceae) por marcadores moleculares em plantios de cana-de-açúcar

Iwanicki, Natasha Sant’Anna

doi:10.11606/d.11.2016.tde-06042016-170147

Cited by 1 publication

(2 citation statements)

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“…Isolates ESALQ 1426 and ESALQ 1635 ( M. robertsii ) and all isolates of M. anisopliae were identified by Rezende et al ( 2015 ). Isolate ESALQ 5168 ( M. robertsii ) and all isolates of M. brunneum were identified by Iwanicki ( 2015 ) and Iwanicki et al ( 2019 ). Identification in all studies were based on sequencing of the 5′ EF-1α region.…”

Section: Methodsmentioning

confidence: 99%

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UV-B Radiation Tolerance and Temperature-Dependent Activity Within the Entomopathogenic Fungal Genus Metarhizium in Brazil

Couceiro

Fatoretto

Demétrio

et al. 2021

Front. Fungal Biol.

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Metarhizium comprises a phylogenetically diverse genus of entomopathogenic fungi. In Brazil, Metarhizium anisopliae s.str. subclade Mani 2 is predominantly isolated from insects, while M. robertsii and M. brunneum mostly occur in the soil environment. Solar radiation and high temperatures are important abiotic factors that can be detrimental to fungal propagules. We hypothesized that among 12 Brazilian isolates of Metarhizium spp., M. anisopliae Mani 2 (n = 6), being adapted to abiotic conditions of the phylloplane, is more tolerant to UV light and high temperatures than M. robertsii (n = 3) and M. brunneum (n = 3). Inoculum of each isolate was exposed to UV-B for up to 8 h and viability evaluated 48 h later. After 8 h under UV-B, most of the isolates had germination rates below 5%. Discs of mycelia were incubated at different temperatures, and diameter of colonies were recorded for 12 days. Mycelia of M. robertsii isolates grew faster at 33 °C, while M. anisopliae and M. brunneum grew most at 25 °C. Dry conidia were incubated at 20, 25 or 40 °C for 12 days, and then viabilities were examined. At 40 °C, conidia of five M. anisopliae isolates were the most tolerant. In the three experiments, considerable intra- and inter-specific variability was detected. The results indicate that conclusions about tolerance to these abiotic factors should be made only at the isolate level.

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Section: Methodsmentioning

confidence: 99%

“…Rezende et al (2015). Isolate ESALQ 5168 (M. robertsii) and all isolates of M. brunneum were identified by Iwanicki (2015) and Iwanicki et al (2019). Identification in all studies were based on sequencing of the 5 ′ EF-1α region.…”

Section: Introductionmentioning

confidence: 99%