Host status of crispy-leaf lettuce cultivars to root-knot nematodes

Sgorlon, Luís Fernando Franchin; Silva, Edgard Henrique Costa; Soares, Renato Silva; Borges, Heloísa Oliveira; Diniz, Guilherme Matos Martins; Braz, Leila Trevisan; Soares, Pedro Luiz Martins

doi:10.14393/bj-v34n5a2018-39387

Cited by 5 publications

(1 citation statement)

References 11 publications

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“…3). This indicates that lettuce plants are susceptible to M. incognita, a fact widely reported in the literature (Franchin et al, 2018;Souza et al, 2019).…”

Section: Discussionsupporting

confidence: 58%

Silicon promotes the control of Meloidogyne incognita in lettuce by increasing ascorbic acid and phenolic compounds

et al. 2022

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The use of silicon (Si) has a physical barrier effect on plant tissues, decreasing nematode infection in different crops. Notwithstanding, research on lettuce crop is lacking, especially regarding the chemical mechanisms of action of this bene cial element. Therefore, this study evaluates the effect of Si supply on lettuce plants infested with 0, 6000, and 12000 eggs and second stage juveniles of M. incognita, both in the absence and in the presence of Si (2 mM) in the nutrient solution. Silicon increases phenolic compounds and ascorbic acid, reducing the M. incognita population and decreasing oxidative stress. It also increases chlorophyll index and the quantum e ciency of the photosystem II (FV/FM), favoring the growth and production of lettuce plants. The use of Si decreased the number of nematodes and affected their reproduction, decreasing the number of eggs and galls in the roots of lettuce plants, being yet another sustainable alternative for the control of M. incognita. The Si bene t would be due to the combined effect of the physical barrier and the chemical action from the increase in phenolic compounds and ascorbic acid in plant tissues, improving the physiological aspects of plants. Key MessagesThe Lactuca sativa is a crop susceptible to the attack of root-knot nematode.The Si strengthens the defense system of this plant against incognita.Si has an effect on increasing the rmness of tissues acting as a physical barrier in control of incognita.Si supply decreases the reproduction rate of incognita. The Si a sustainable alternative, in control of root-knot nematode since its use can reduce applications with nematicides.

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“…3). This indicates that lettuce plants are susceptible to M. incognita, a fact widely reported in the literature (Franchin et al, 2018;Souza et al, 2019).…”

Section: Discussionsupporting

confidence: 58%