Potential of Trichoderma harzianum for biological control of Meloidogyne incognita, the root-knot nematode of tomato. (Abstract/Poster in atti di convegno)

Type
Label
  • Potential of Trichoderma harzianum for biological control of Meloidogyne incognita, the root-knot nematode of tomato. (Abstract/Poster in atti di convegno) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Alternative label
  • Leonetti P., Costanza A., Zonno M.C., Molinari S., Altomare C. (2014)
    Potential of Trichoderma harzianum for biological control of Meloidogyne incognita, the root-knot nematode of tomato.
    in IOBC, XIII Meeting of the Working Group biological control of fungal and bacterial plant pathogens. Biocontrol of plant diseases: "From the field to the laboratory and back again", Uppsala, Sweden, 15-18 June, 2014
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Leonetti P., Costanza A., Zonno M.C., Molinari S., Altomare C. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Abstracts of the IOBC, XIII Meeting of the Working Group biological control of fungal and bacterial plant pathogens. Biocontrol of plant diseases: \"From the field to the laboratory and back again\", Uppsala, Sweden, 15-18 June, 2014. Abs. 116. (literal)
Note
  • Abstract (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-IPP CNR-IPP CNR-ISPA CNR-IPP CNR-ISPA (literal)
Titolo
  • Potential of Trichoderma harzianum for biological control of Meloidogyne incognita, the root-knot nematode of tomato. (literal)
Abstract
  • Nematodes of the genus Meloidogyne spp. are obligate parasites that infect a wide range of different crops in all agricultural regions worldwide and cause significant losses of both yield and quality of produce. M. incognita is one of the most important pests of tomato in warm climates. Juveniles of M. incognita infect tomato plant roots causing the development of root-knot galls, and drain plant nutrients by building up feeding sites in the root central cylinder. Infection of young plants may be lethal, while infection of mature plants causes decreased yield.The effective management of diseases caused by root-knot nematodes is multifactorial and difficult to achieve. Control is made even more difficult as the nematodes can survive in alternative weed hosts. At the present, in most crops it heavily relies on the use of chemical nematocides. However, chemical control is costly and poses safety and environmental concerns, therefore suppression of plant parasitic nematodes with predators, parasites or disease agents is a desirable alternative to chemicals. Soil fungi belonging to the genus Trichoderma have long been known to be a feasible biological alternative to chemicals for control of several soil-borne plant pathogen. More recently it has been shown that Trichoderma spp. have a potential also for biological control of plant parasitic nematodes. However, very little is known about their mechanism(s) of nematode control. We have investigated the three-way interaction between one antagonistic strain of Trichoderma harzianum and the root-knot nematode M. incognita on susceptible tomato plants in pot experiments. Tomato germlings were seeded in clay pots containing sterile river sand and subsequently treated with a conidia suspension of T. harzianum, to reach the density of 107 CFU/g of soil. Plants were grown in a growth chamber for ten days, then inoculated with M. incognita juveniles (J2) and grown for 40 more days. The amount of J2 that entered the roots and started to develop was significantly lower in T. harzianum-treated than in untreated plants. To obtain new insights into the events underlining the processes of plant-nematode-Trichoderma interactions, the expression pattern of pathogenesis-related genes considered as markers for either salicylic acid (SA)- or jasmonic acid (JA)-dependent systemic acquired resistance (SAR) was examined in the roots and shoots of tomato plants treated with T. harzianum and subsequently infected with root-knot nematodes. First findings concerned with changes in gene expression of tomato plants infected with M. incognita as a result of a pre-treatment with T. harzianum will be shown. (literal)
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