Rhizophagus clarus controls Meloidogyne javanica and enhances the activity of defense-related enzymes in tomato

IF 0.7 4区农林科学 Q4 HORTICULTURE

Horticultura Brasileira Pub Date : 2022-06-01 DOI:10.1590/s0102-0536-20220205

Monique TR e Silva, Beatriz de A e Silva, O. Alberton, R. P. Schwengber, C. R. Dias-Arieira

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Abstract

ABSTRACT Root-knot nematodes (Meloidogyne spp.) cause severe damage to tomato crop. This study aimed to investigate the biocontrol potential of the arbuscular mycorrhizal fungus Rhizophagus clarus compared with that of the fungi Trichoderma harzianum and Pochonia chlamydosporia against Meloidogyne javanica in tomato and assess the activity of defense-related enzymes in mycorrhizal roots. Three experiments were carried out to evaluate mycorrhizal colonization, nematode penetration, development, and reproduction, plant growth, and enzyme activity in mycorrhizal roots. We observed that R. clarus colonization of tomato roots increased with time. Although R. clarus did not prevent nematode penetration or development in roots, it was efficient in reducing total nematode numbers. R. clarus, T. harzianum and P. chlamydosporia treatments reduced nematode reproduction by 56.5, 54.4, and 56.9%, respectively, compared with the control. Moreover, R. clarus increased tomato shoot weight and phenylalanine ammonia-lyase and peroxidase activities.

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根噬菌能抑制爪哇甜蛾，提高番茄防御相关酶的活性

根结线虫(Meloidogyne spp.)对番茄作物造成严重危害。本研究旨在探讨丛枝菌根真菌根食菌(Rhizophagus clarus)与哈茨木霉(Trichoderma harzianum)和衣孢波氏菌(Pochonia chlamydosporia)对番茄蔓结线虫(Meloidogyne javanica)的生物防治潜力，并评价菌根防御相关酶的活性。通过3个试验对菌根定植、线虫渗透、发育和繁殖、植物生长和菌根酶活性进行了评价。结果表明，随着时间的推移，番茄根茎上的弧菌定殖量逐渐增加。虽然黑毛霉不能阻止线虫在根系中的渗透和发育，但能有效地减少线虫的总数。与对照相比，黑丝孢子虫、哈氏弓形虫和衣原孢子虫分别使线虫繁殖减少56.5、54.4和56.9%。此外，红曲霉还能提高番茄茎重，提高苯丙氨酸解氨酶和过氧化物酶活性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Horticultura Brasileira 农林科学-园艺

CiteScore

1.40

自引率

28.60%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal Horticultura Brasileira, a quarterly journal, is the Official Publication of the Sociedade de Olericultura do Brasil. Its abbreviated title is Hortic. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.