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Arbuscular mycorrhizal fungi decrease Meloidogyne enterolobii infection of Guava seedlings

Published online by Cambridge University Press:  27 August 2020

C.S.B. de Sá Open the ORCID record for C.S.B. de Sá [Opens in a new window]  and
M.A.S. Campos Open the ORCID record for M.A.S. Campos [Opens in a new window]
C.S.B. de Sá
Affiliation:
Collegiate of Biological Sciences, University of Pernambuco Campus Petrolina, BR 203, Km 2, Petrolina, Pernambuco56328-903, Brazil Postgraduate Program in Environmental Science and Technology for the Semiarid, PPGCTAS, University of Pernambuco Campus, Petrolina, Pernambuco, Brazil
M.A.S. Campos*
Affiliation:
Collegiate of Biological Sciences, University of Pernambuco Campus Petrolina, BR 203, Km 2, Petrolina, Pernambuco56328-903, Brazil Postgraduate Program in Environmental Science and Technology for the Semiarid, PPGCTAS, University of Pernambuco Campus, Petrolina, Pernambuco, Brazil
*
Author for correspondence: M.A.S. Campos, E-mail: [email protected]
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Abstract

Guava (Psidium guajava L.) production is prominent in the irrigated fruit growing area of Brazil. However, the parasite Meloidogyne enterolobii (a phytonematode) has caused a decrease in guava production. Arbuscular mycorrhizal fungi (AMF) are known to be beneficial to plants; however, their ability to protect plants against nematodes such as M. enterolobii remains poorly known. This study aimed to monitor M. enterolobii infection in guava seedlings inoculated with three AMF species. After AMF inoculation, the seedlings were grown in sterile soil for 60 days before inoculation with 2000 M. enterolobii eggs. Plant growth parameters, mycorrhizal colonization and the number of Meloidogyne in the roots were determined over time (30 and 60 days after Meloidogyne inoculation). The AMF enhanced guava seedling growth, and reduced the amount of Meloidogyne in the roots at 30 and 60 days after nematode inoculation, indicating that these AMF species could serve as biocontrol agents of M. enterolobii in guava cultivation.

Keywords

Irrigated fruit growingSan Francisco Valleyphytonematodearbuscular mycorrhizal fungiplant pathology
Type
Short Communication
Information
Journal of Helminthology , Volume 94 , 2020 , e183
Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press

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