Fertilisation with compost mitigates salt stress in tomato by affecting plant metabolomics and nutritional profiles

Chemical and Biological Technologies in Agriculture

Research

Mariavittoria Verrillo¹  Giovanni Vinci¹  Antonietta Aliberti²  Albino Maggio²  Davide Savy²  Amalia Barone²  Vincenza Cozzolino³  Alessandro Piccolo³ 

[1] Centro Interdipartimentale di Ricerca Sulla Risonanza, Magnetica Nucleare Per l’Ambiente, l’Agro-Alimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy;Dipartimento di Agraria, Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy;Dipartimento di Agraria, Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy;Centro Interdipartimentale di Ricerca Sulla Risonanza, Magnetica Nucleare Per l’Ambiente, l’Agro-Alimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy;

关键词: Organic amendments;    Salinity;    Stress tolerance;    Gas chromatography mass spectrometry (GC–MS);    Soluble sugars and amino acids;    Plant signalling;    Metabolic reprogramming;   

DOI  :  10.1186/s40538-022-00373-5

 received in 2021-12-30, accepted in 2022-12-09,  发布年份 2022

来源: Springer

【 摘 要 】

BackgroundSalinity is one of the major threats for crop growth and yield and its rate of expansion is expected to increase. We conducted a pot experiment to evaluate and compare the effect of a green compost addition and mineral fertilisation, on growth, nutrition and metabolites of tomato plants, exposed to increasing doses of NaCl.ResultsAlthough the development of stressed plants was lower than the corresponding controls, compost-treated plants performed better than mineral-amended plants watered with the same amount of salt. The different plant growth was related to an increased nutritional status. Namely, compost-treated plants showed a larger content of macro- and micronutrients, and a greater accumulation of osmoprotectants, such as soluble sugars and amino acids. Moreover, compost-treated plants showed a larger content of metabolites involved in modulating the response to salt stress, such as molecules related to energy transfer in plants and precursors of Reactive Oxygen Species scavenging compounds. Overall, the better performance of compost-added plants may be attributed to a greater availability of the organic forms of nutrients and to the positive bioactivity of compost-derived humic substances.ConclusionsCompost application efficiently mitigated salt stress in tomato plants in respect to mineral fertilisation. This alleviating role was associated to the induction of a more efficient metabolic response that increased accumulation of metabolites involved in modulating the salinity stress. Therefore, fertilising with composted agricultural residue may represent a convenient alternative to mineral fertilisers to grow tomato plants in the presence of salt stress.Graphical Abstract

【 授权许可】

CC BY   
© The Author(s) 2022

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