Influência do fotoperíodo e da temperatura na intensidade de doença causada por Fusarium graminearum em Egeria densa e E. najas

Neto, Carlos R. Borges; Gorgati, Cláudia Q.; Pitelli, Robinson Antônio

doi:10.1590/s0100-83582005000300008

Cited by 3 publications

(2 citation statements)

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“…To determine the conditions suitable for the occurrence of different pathogens, it is essential to investigate their biological characteristics [35,36]. The findings of previous studies on the biological characteristics of F. graminearum were similar to ours, indicating that the optimal temperature for F. graminearum mycelial growth is 25 • C; optimal pH is 7; most suitable nitrogen source is Yea; and most suitable photoperiod is 12 h light/12 h darkness [10,37].…”

Section: Discussionsupporting

confidence: 57%

Identification of the Causal Agent of Brown Leaf Spot on Kiwifruit and Its Sensitivity to Different Active Ingredients of Biological Fungicides

et al. 2022

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Kiwifruit (Actinidia chinensis) is an important commercial crop in China, and the occurrence of diseases may cause significant economic loss in its production. In the present study, a new pathogen that causes brown leaf spot disease on kiwifruit was reported. The fungus was isolated from an infected sample and identified as Fusarium graminearum based on morphological and molecular evaluation. Koch’s postulates were confirmed when the pathogen was re-isolated from plants with artificially induced symptoms and identified as F. graminearum. Based on the biological characteristics of the pathogen, it was determined that: its optimal growth temperature was 25 °C; optimal pH was 7; most suitable carbon source was soluble starch; most suitable nitrogen source was yeast powder; and best photoperiod was 12 h light/12 h dark. Further investigations were conducted by determining 50% effective concentrations (EC50) of several active ingredients of biological fungicides against F. graminearum. The results showed that among the studied fungicides, tetramycin and honokiol had the highest antifungal activity against this pathogen. Our findings provide a scientific basis for the prevention and treatment of brown leaf spot disease on kiwifruit.

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Section: Discussionsupporting

confidence: 57%

Identification of the Causal Agent of Brown Leaf Spot on Kiwifruit and Its Sensitivity to Different Active Ingredients of Biological Fungicides

et al. 2022

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“…From the species tested, Mimosa pudica showed greater sensitivity to the inhibitory effects of the extracts (Santos et al 2008). Another example of use, but not in soy, is the application of a isolate of Fusarium graminearum as a biological control agent of Egeria densa and E. najas, submerged aquatic plants that cause problems in hydroelectric dams (Borges Neto et al, 2005), as well as the use of fish (Piaractus mesopotamicus) in the control of these species (Miyazaki & Pitelli, 2003).…”

Section: Biologicalmentioning

confidence: 99%