Rhizosphere-driven integrated management of Meloidogyne incognita in tomato (Solanum lycopersicum) using Arthrobotrys oligospora and salicylic acid through enhanced plant defense responses.
Abdelrahman R Ahmed, Mohammad Danish, Mohammad Shahid, Lukman Ahamad, Mohammad Amir, Haiam O Elkatry, Khaled M A Ramadan, Hossam S El-Beltagi
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引用次数: 0
Abstract
Root knot nematodes (Meloidogyne spp.) is a major group of plant-parasitic nematode that severely reduce crop productivity by hijacking host root resources. Environmental and toxicological risks associated with chemical nematicides drive the need of eco-friendly management strategies. Therefore, a greenhouse experiment was conducted to assess the single/joint suppressive effects of Arthrobotrys oligospora and salicylic acid (SA) in tomato (Solanum lycopersicum) plants infected with Meloidogyne incognita. Compared to single treatment, combined (A. oligospora + SA) application exhibited pronounced improvement in growth, biochemical parameters, and yield attributes in nematode-infected tomatoes. The combined treatment significantly (P < 0.05) enhanced β-1,3-glucanase, phenylamine ammonia lyase (PAL), peroxidase (POD), and superoxide dismutase (SOD) activities, while significantly (P < 0.05) decreased in proline and malondialdehyde (MDA) content when compared with nematode-infected plants. The combined treatment of A. oligospora and SA significantly decreased nematode infection parameters, disease index, and reproduction factor in nematode-infected tomato. Histological analysis showed that A. oligospora reduced nematode penetration and feeding site development, whereas roots infected solely with M. incognita displayed pronounced vascular bundle damage. These findings demonstrate that the combined application of A. oligospora and SA effectively suppressed M. incognita infection and enhanced tomato defence responses under greenhouse conditions.
期刊介绍：
Functional Plant Biology (formerly known as Australian Journal of Plant Physiology) publishes papers of a broad interest that advance our knowledge on mechanisms by which plants operate and interact with environment. Of specific interest are mechanisms and signal transduction pathways by which plants adapt to extreme environmental conditions such as high and low temperatures, drought, flooding, salinity, pathogens, and other major abiotic and biotic stress factors. FPB also encourages papers on emerging concepts and new tools in plant biology, and studies on the following functional areas encompassing work from the molecular through whole plant to community scale. FPB does not publish merely phenomenological observations or findings of merely applied significance.
Functional Plant Biology is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science.
Functional Plant Biology is published in affiliation with the Federation of European Societies of Plant Biology and in Australia, is associated with the Australian Society of Plant Scientists and the New Zealand Society of Plant Biologists.
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