Ascophyllum nodosum Based Extracts Counteract Salinity Stress in Tomato by Remodeling Leaf Nitrogen Metabolism

Biostimulants have rapidly and widely been adopted as growth enhancers and stress protectants in agriculture, however, due to the complex nature of these products, their mechanism of action is not clearly understood. By using two algal based commercial biostimulants in combination with the Solanum l...

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Published inPlants (Basel) Vol. 10; no. 6; p. 1044
Main Authors Dell’Aversana, Emilia, Cirillo, Valerio, Van Oosten, Michael James, Di Stasio, Emilio, Saiano, Katya, Woodrow, Pasqualina, Ciarmiello, Loredana Filomena, Maggio, Albino, Carillo, Petronia
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 21.05.2021
MDPI
Subjects
Abiotic stress
Agricultural production
Agriculture
Algae
amino acid metabolism
Amino acids
Ascophyllum nodosum
Biometrics
biostimulants
Fertilizers
Fruits
Homeostasis
leaves
mechanism of action
Metabolism
Metabolites
minor amino acids
Nitrogen
Nitrogen metabolism
Nutrients
osmolytes
Osmotic stress
Pesticides
Phenotypes
Plant cells
Plant growth
Plant tolerance
Potassium
Reactive oxygen species
Salinity
Salinity effects
salt stress
Scavenging
seaweed extract
Solanum lycopersicum
Tomatoes
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Summary:Biostimulants have rapidly and widely been adopted as growth enhancers and stress protectants in agriculture, however, due to the complex nature of these products, their mechanism of action is not clearly understood. By using two algal based commercial biostimulants in combination with the Solanum lycopersicum cv. MicroTom model system, we assessed how the modulation of nitrogen metabolites and potassium levels could contribute to mediate physiological mechanisms that are known to occur in response to salt/and or osmotic stress. Here we provide evidence that the reshaping of amino acid metabolism can work as a functional effector, coordinating ion homeostasis, osmotic adjustment and scavenging of reactive oxygen species under increased osmotic stress in MicroTom plant cells. The Superfifty biostimulant is responsible for a minor amino acid rich-phenotype and could represent an interesting instrument to untangle nitrogen metabolism dynamics in response to salinity and/or osmotic stress.
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These authors have equally contributed.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants10061044