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Exhausted plant cell culture media as potential biostimulants to enhance plant growth and nitrogen use efficiency in tomatoes under optimal and reduced nitrogen supply.

Authors :
Cannata, Claudio
Basile, Federico
La Bella, Emanuele
Arciello, Stefania
Abreu, Ana Cristina
Fernández, Ignacio
Leonardi, Cherubino
Mauro, Rosario Paolo
Source :
Journal of Plant Nutrition & Soil Science. Sep2024, p1. 12p. 2 Illustrations.
Publication Year :
2024

Abstract

Background Aims Methods Results Conclusions Inefficient nitrogen (N) use leads to economic losses and environmental harm. Improving N use efficiency (NUE) is crucial. The use of plant biostimulants (PBs), integrated with good agronomic practices, offers a sustainable solution.The study explores the potential use of exhausted cell culture media from plant cell cultures (<italic>Nicotiana</italic> sp. and <italic>Gardenia</italic> sp.) as PBs, assessing their role in enhancing plant physiological status and NUE. It also compares their effectiveness against commercial PBs.Two experiments (Experiments 1 and 2) were conducted using cherry tomato plants. In the first one, the two media were applied at different concentrations as a foliar spray to define the optimal dose. This outcome was used to set up Experiment 2, in which both media were compared to commercial PBs under optimal and reduced N supply. Measurements included plant growth, chlorophyll (Chl) content, and NUE indices. Moreover, Experiment 2 examined gene expression related to N assimilation, transport, and response to oxidative stress.Both experiments demonstrated a significant increase in leaf area (≈11%) and aboveground biomass (≈13%) using exhausted media. Furthermore, Experiment 2 demonstrated enhancements in Chl content (≈10%) and plant N accumulation (≈20%). These findings indicate that exhausted media has a comparable efficacy to commercial PBs.The study underscores the practical viability of exhausted cell culture media as effective PBs for tomato growth in both N conditions. This approach aligns with sustainability objectives by repurposing by‐products to enhance plant resilience against abiotic stress and potentially improve the efficiency of N fertilizers. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14368730
Database :
Academic Search Index
Journal :
Journal of Plant Nutrition & Soil Science
Publication Type :
Academic Journal
Accession number :
179725463
Full Text :
https://doi.org/10.1002/jpln.202300464