Next Article in Journal
Antimicrobial Effects against Oral Pathogens and Cytotoxicity of Glycyrrhiza uralensis Extract
Next Article in Special Issue
Chlamydomonas reinhardtii, an Algal Model in the Nitrogen Cycle
Previous Article in Journal
QTL Mapping and Prediction of Haploid Male Fertility Traits in Maize (Zea mays L.)
Previous Article in Special Issue
Flavonoids and Isoflavonoids Biosynthesis in the Model Legume Lotus japonicus; Connections to Nitrogen Metabolism and Photorespiration
Open AccessArticle

Exogenous Carbon Compounds Modulate Tomato Root Development

Grupo de Bioquímica y Biotecnología, Área de Fisiología Vegetal, Departamento de Ciencias Agrarias y del Medio Natural, ESTCE, Universitat Jaume I, 12071 Castellón, Spain
*
Authors to whom correspondence should be addressed.
Plants 2020, 9(7), 837; https://doi.org/10.3390/plants9070837
Received: 30 May 2020 / Revised: 28 June 2020 / Accepted: 29 June 2020 / Published: 3 July 2020
(This article belongs to the Special Issue Plant Nitrogen Assimilation and Metabolism)
NO3 is not only a nutrient, but also a signaling compound that plays an important role in several plant processes, like root development. The present study aimed to investigate the effect of three different exogenous C compounds (sucrose, glucose, 2-oxoglutarate) added to NO3 nutrition on C/N, auxin and antioxidant metabolisms in 10-day-old tomato seedlings. Sucrose and glucose supplementation enhanced primary root (PR) length, lateral root number and root density, while 2-oxoglutarate negatively affected them. This phenomenon was accompanied by a slight increase in NRT2.1 and GS1 gene expression, together with an increase in LAX2 and LAX3 and a decrease in LAX4 in the roots growing under sucrose and glucose sources. The addition of 2-oxoglutarate enhanced the expression of NiR, GDH, PEPC1, LAX1, LAX3 and the antioxidant gene SOD Cl. Taken together, these findings contribute to a better understanding of how these C sources can modulate N uptake and C/N, auxin and antioxidant gene expression, which could be useful for improving nitrogen use efficiency. View Full-Text
Keywords: Solanum lycopersicum; root development; N metabolism; sugars; 2-oxoglutarate Solanum lycopersicum; root development; N metabolism; sugars; 2-oxoglutarate
Show Figures

Graphical abstract

MDPI and ACS Style

González-Hernández, A.I.; Scalschi, L.; García-Agustín, P.; Camañes, G. Exogenous Carbon Compounds Modulate Tomato Root Development. Plants 2020, 9, 837.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop