Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/49350
Título: Extratos do Fungo Pochonia chlamydosporia no Controle de Meloidogyne javanica no Tomateiro
Autores: Souza, Paulo Estevão de
Soares, Filippe Elias de Freitas
Souza, Paulo Estevão de
Campos, Vicente Paulo
Sufiate, Bruna Leite
Palavras-chave: Nematoides de galhas
Fungos nematófagos
Controle bioquímico
Tomateiro - Doenças e pragas
Root-knot nematodes
Nematophagous fungi
Biochemical control
Tomato - Diseases and pests
Data do documento: 16-Fev-2022
Editor: Universidade Federal de Lavras
Citação: GUIMARÃES, N. N. Extratos do Fungo Pochonia chlamydosporia no Controle de Meloidogyne javanica no Tomateiro. 2022. 53 p. Dissertação (Mestrado em Agronomia/Fitopatologia) – Universidade Federal de Lavras, Lavras, 2022.
Resumo: The phytonematodes are responsible for standing out in tomato production, including the species Meloidogyne javanica. One of the strategies found to control these phytopathogens is the use of egg parasite fungi such as Pochonia chlamydosporia. How this parasitism occurs from a biochemical point of view still needs scientific explanation. Fungal enzymes are being tested and not being tested in nematode control, but there are still gaps in the knowledge about these enzymes in vivo both in the laboratory and in the greenhouse and in the field. In this work, the action of proteases and qutinases from P. chlamydosporia on the control of M. javanica on tomato were added. Dry macerates (MS) without chitin (MSS, 2%) and with chitin (MSQ, 2%) of P. chlamydosporia significantly reduced (P ≤ 0.05) the number of second instar juveniles (J2) of M. javanica in vitro and in the in vivo test reduced the number of root knot/g of M. javanica in 43 the weight of the fresh mass of the roots of the treatments MSQ (0.5, 1, 4%) were statistically equal to the control (MSQ 0%).These are attributed to the enzymatic activity of proteases and chitins, being the macerates MSS and MSQ showed 23 and 0.71 U/mg of specific protease activity, chitinases 0.06 and 0.10 U/mL and protease VCP1 45.10-3 and 35.10-3 μg/min. Therefore, the 0.5% MSQ was the most efficient in reducing the infectivity of the M. javanica population, so it has the potential to be used as an alternative to control this nematode.
URI: http://repositorio.ufla.br/jspui/handle/1/49350
Aparece nas coleções:Agronomia/Fitopatologia - Mestrado (Dissertações)

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