Genetic diversity of Fusarium spp. in pineapple ‘Pérola’ cultivar

Souza, Wilza Carla Oliveira de; Nascimento, Luciano; Oliveira, M.D.M.; Porcino, Mirelly Miguel; Silva, Hiago A. O.

doi:10.1007/s10658-017-1328-0

Cited by 6 publications

(1 citation statement)

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“…However, this production has been decreasing each year and significantly due to the occurrence of fusariosis caused by Fusarium spp. (SOUZA et al, 2017), also known as resinosis and fungal gummy disease, which is considered a key pineapple disease (AQUIJE et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

In vitrobehavior of Fusarium spp. isolates in differents cultivations conditions

Gomes

Demartelaere²,

Maciel

et al. 2020

BJD

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Ananas comosus (L) Merril var. comosus is the most important fruit segment in Brazil. In Paraíba, the occurrence of fusariosis is associated with humidity, light and temperature, important factors for the reproduction and dissemination of Fusarium spp. The aim of the study was to evaluate mycelial growth and sporulation of F. spp. under different cultivation conditions. The 10 isolates were grown at different temperatures, luminosities and a Potato Dextrose Agar (PDA) culture medium. Mycelial growth was measured with a ruler graduated in centimeters (cm), at 24-hour intervals, for six days. Conidial production was also quantified with the aid of a Neubauer chamber (x 10 5 conidia/mL). The design was completely randomized in a factorial arrangement (3x3x10) and 15 repetitions. The averages were compared by Scott-Knott (p ≤ 0.05) in the statistical program R. At temperatures of 15 and 35 °C, in all light regimes, there was no stimulus for the production of mycelial when the ten isolates were evaluated, with the exception of the temperature of 35 °C, in the alternating light regime, which obtained. At a temperature of 25 °C, isolates 5 and 10 stood out from the others in the mycelial growth of F. spp., with isolates that produced low and medium mycelium production. For the production of conidia, the temperature of 15 °C, in the three light regimes, a small production of conidia (x 10 5 /mL) was observed, at the temperature of 25 °C in the light and continuous dark regimes, there was a greater production of conidia (x 10 5 /mL) in isolates 5 and 20 in relation to the other isolates, already in the alternating light regime, all isolates obtained a high production of conidia (x 10 5 /mL). At a temperature of 35 °C, with continuous light and dark regimes and alternating light for isolates 1, 2, 3, 4 and 7, they presented an average production, whereas isolates 5, 6, 8, 9 and 19 obtained high productions conidia (x 10 5 /mL) of F. spp. The recommended culture conditions for mycelial growth and multiplication of Fusarium spp. are the alternating light regime and temperature of 25 °C.

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Section: Introductionmentioning

confidence: 99%