Nitrogen Use Efficiency in Oil Palm Seedlings: Unraveling the Untapped Potential of Elevated External Ammonium Supply

Ammonium (NH ) is an essential nitrogen source for plants, but excessive exposure can trigger stress responses that vary among and within different plant species. This study investigated the phenotypic variations in response to ammonium nutrition in five oil palm genotypes seedlings. Nitrate nutriti...

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Bibliographic Details
Published in:Plants (Basel) 2023-07, Vol.12 (15), p.2819
Main Authors: De la Peña, Marlon, Ruiz-Romero, Rodrigo, Romero, Hernán Mauricio
Format: Article
Language:English
Subjects:
Agricultural production
Amino acids
Ammonium
ammonium tolerance
Analysis
Chlorophyll
Climate change
Comparative analysis
Composition
Contamination
Efficiency
Environmental aspects
Gas exchange
Genotype & phenotype
Genotypes
Growth
metabolites
Nitrates
Nitrogen
nitrogen use efficiency
Nutrition
Oil palm
Phenotypic variations
Physiological aspects
Physiology
Plant growth
Plant species
Proteins
Scientific equipment and supplies industry
Seedlings
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Summary:Ammonium (NH ) is an essential nitrogen source for plants, but excessive exposure can trigger stress responses that vary among and within different plant species. This study investigated the phenotypic variations in response to ammonium nutrition in five oil palm genotypes seedlings. Nitrate nutrition was used as a reference for a non-stressful condition, and three different nitrogen concentrations (5, 10, and 15 mM) were examined. Control groups without external nitrogen application were included for each genotype. Several parameters were analyzed, including plant growth, root length, gas exchange, fluorescence, chlorophyll, reducing sugars, amino acids, proteins, and nitrogen uptake. The results revealed a significant genotype effect, particularly between the interspecific OxG hybrid and the genotypes. Ammonium nutrition increased shoot growth in all genotypes compared to nitrate nutrition. Additionally, there was a trend towards increased primary root length, amino acids, proteins, and nitrogen uptake under ammonium supply. These findings are promising, particularly considering the recommendation to use ammonium with inhibitors for environmental sustainability.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants12152819