Prolonged root hypoxia induces ammonium accumulation and decreases the nutritional quality of tomato fruits

Journal of Plant Physiology
Faouzi HorchaniPhilippe Raymond

Abstract

Here we examined the effects of root hypoxia (1-2% oxygen) on the physiology of the plant and on the biochemical composition of fruits in tomato (Solanum lycopersicum cv. Micro-Tom) plants submitted to gradual root hypoxia at first flower anthesis. Root hypoxia enhanced nitrate absorption with a concomitant release of nitrite and ammonium into the medium, a reduction of leaf photosynthetic activity and chlorophyll content, and an acceleration of fruit maturation, but did not affect final fruit size. Quantitative metabolic profiling of mature pericarp extracts by (1)H NMR showed that levels of major metabolites including sugars, organic acids and amino acids were not modified. However, ammonium concentration increased dramatically in fruit flesh, and ascorbate and lycopene concentrations decreased. Our data indicate that the unfavorable effects of root hypoxia on fruit quality cannot be explained by two of the well-known effects of root hypoxia on the plant, namely a decrease in photosynthesis or an excess in ethylene production, but may instead result from disturbances in the supply of either growth regulators or ammonium, by the roots.

References

Feb 10, 1995·Analytical Biochemistry·K KampfenkelD Inzé
Feb 17, 2001·Nitric Oxide : Biology and Chemistry·K M MirandaD A Wink
Mar 26, 2003·Journal of Experimental Botany·Carine DevauxPhilippe Raymond
Jun 1, 1997·Annual Review of Plant Physiology and Plant Molecular Biology·Malcolm C. Drew
Aug 18, 2004·Journal of Plant Physiology·Philippe MorardThierry Lamaze
Feb 16, 2005·Journal of Experimental Botany·Yuni Sri RahayuFritz Bangerth
May 12, 2006·Journal of Experimental Botany·Esmeralda MartíJosé L García-Martínez
Aug 18, 2006·Plant Molecular Biology·Nadège TélefPhilippe Gallusci
Oct 31, 2006·Plant Physiology·I G L LibourelR G Ratcliffe

❮ Previous
Next ❯

Citations

Nov 20, 2009·Plant & Cell Physiology·Jed A ChristiansonIain W Wilson
Dec 9, 2010·Plant Signaling & Behavior·Faouzi Horchani, Samira Aschi-Smiti
Feb 11, 2011·Plant Signaling & Behavior·Faouzi Horchani, Samira Aschi-Smiti
Jul 15, 2016·Brazilian Journal of Biology = Revista Brasleira De Biologia·C M HütherM A Bacarin
May 3, 2018·Annals of Botany·Bertrand BeauvoitYves Gibon
Jun 17, 2020·The Science of the Total Environment·C B PandeyJ S Singh

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.