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Influence of Tomato Plant Mycorrhization on Nitrogen Metabolism, Growth and Fructification on P-Limited Soil

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Abstract

The application of mycorrhizal fungi in agricultural soils as bio-fertilizers is going to be established as an agronomic practice for enhancing crop nutrients acquisition and production. In this work, the effects of tomato root colonization by arbuscular mycorrhizal fungus Glomus mosseae, on nitrogen metabolism, fructification and environmental sustainability without P soil fertilization have been studied. At the harvesting fruit stage, the mycorrhizal (M) plants present a significantly higher concentration of mineral nutrients and organic nitrogen compounds. In particular, GLU, GLN, ASP and ASN have risen about 35% more than non-mycorrhizal (NM) plants. Tomato root mycorrhization improved nitrogen metabolism in plants, too by increasing the nitrate reductase and the glutamine synthetase enzymatic activity. Moreover, mycorrhization affects many aspects of vegetative and reproductive growth. In particular, the fruit production turns from inoculated (M) plants into non-inoculated (NM) plants, rising up to 50%.

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  1. Department of Agriculture, Environmental and Food, University of Molise, Via F. De Sanctis, 86100, Campobasso, Italy

    Catello Di Martino, Davide Palmieri, Valentina Torino & Giuseppe Palumbo

  2. Department of Environmental, Biological and Pharmaceutical Science and Technologies, University of Campania “Luigi Vanvitelli”, Via Vivaldi 43, 81100, Caserta, Italy

    Antonietta Fioretto

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  1. Catello Di Martino
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Di Martino, C., Fioretto, A., Palmieri, D. et al. Influence of Tomato Plant Mycorrhization on Nitrogen Metabolism, Growth and Fructification on P-Limited Soil. J Plant Growth Regul 38, 1183–1195 (2019). https://doi.org/10.1007/s00344-019-09923-y

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