There is a direct link between allantoin concentration and cadmium tolerance in Arabidopsis

Nourimand, Maryam; Todd, Christopher D.

doi:10.1016/j.plaphy.2018.11.016

Cited by 22 publications

(16 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Purine catabolism can lead to the complete disintegration of the purine ring in plants (Fig. 5B; Werner and Witte, 2011) to recycle nitrogen (Soltabayeva et al, 2018), but it is also used to generate the intermediates uric acid and especially allantoin, which counteract stress by reducing reactive oxygen species (Brychkova et al, 2008;Watanabe et al, 2014;Todd, 2016, 2018;Lescano et al, 2016;Ma et al, 2016;Casartelli et al, 2019;Nourimand and Todd, 2019). Sometimes also the accumulation of allantoate has been observed (Alamillo et al, 2010).…”

Section: Purine Nucleotide Degradationmentioning

confidence: 99%

Nucleotide Metabolism in Plants

2019

View full text Add to dashboard Cite

Section: Purine Nucleotide Degradationmentioning

confidence: 99%

Nucleotide Metabolism in Plants

2019

View full text Add to dashboard Cite

“…In our study, H 2 O 2 was highly accumulated in the umpk mutant under normal conditions. This indicates that the UMP kinase is critical for maintaining appropriate ROS metabolism in rice, which is similar to four other enzymes involved in nucleotide metabolism, including nucleoside diphosphate kinase 1, nucleoside diphosphate kinase 2, glutamine phosphoribosyl pyrophosphate amidotransferase 2, and allantoinase [4,41,42,43]. In addition to the high accumulation of ROS, high activities of SOD and POD were also observed in the mutant under normal conditions.…”

Section: Discussionmentioning

confidence: 70%

UMP Kinase Regulates Chloroplast Development and Cold Response in Rice

Dong

Zhang

Zhou

et al. 2019

IJMS

View full text Add to dashboard Cite

Pyrimidine nucleotides are important metabolites that are building blocks of nucleic acids, which participate in various aspects of plant development. Only a few genes involved in pyrimidine metabolism have been identified in rice and the majority of their functions remain unclear. In this study, we used a map-based cloning strategy to isolate a UMPK gene in rice, encoding the UMP kinase that phosphorylates UMP to form UDP, from a recessive mutant with pale-green leaves. In the mutant, UDP content always decreased, while UTP content fluctuated with the development of leaves. Mutation of UMPK reduced chlorophyll contents and decreased photosynthetic capacity. In the mutant, transcription of plastid-encoded RNA polymerase-dependent genes, including psaA, psbB, psbC and petB, was significantly reduced, whereas transcription of nuclear-encoded RNA polymerase-dependent genes, including rpoA, rpoB, rpoC1, and rpl23, was elevated. The expression of UMPK was significantly induced by various stresses, including cold, heat, and drought. Increased sensitivity to cold stress was observed in the mutant, based on the survival rate and malondialdehyde content. High accumulation of hydrogen peroxide was found in the mutant, which was enhanced by cold treatment. Our results indicate that the UMP kinase gene plays important roles in regulating chloroplast development and stress response in rice.

show abstract

“…Evidence for the involvement of purine catabolism in stress protection in plants has recently emerged [15,21,39,40], with ALLA as an activator of JA/J metabolism, signaling, and responses involving abscisic acid (ABA) [15,41]. ALLA mitigates plant stress through decreasing ROS accumulation, directly as a ROS protectant [42], or indirectly [43].…”

Section: Discussionmentioning

confidence: 99%

“…ALLA mitigates plant stress through decreasing ROS accumulation, directly as a ROS protectant [42], or indirectly [43]. On the other hand, it is still not clear whether the stimulatory effect of ALLA on plant growth in adverse conditions is related to its regulatory or signaling function or to its participation in metabolic processes (e.g., ALLA can serve as an alternative N source in the absence of its primary source) [41,44]. An elevated ALLA level during stress is essential for the development of plant tolerance [45], which was also demonstrated in our research.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Bacterial Isolate Inhabiting Spitsbergen Soil Modifies the Physiological Response of Phaseolus coccineus in Control Conditions and under Exogenous Application of Methyl Jasmonate and Copper Excess

Hanaka

Nowak

Plak

et al. 2019

IJMS

View full text Add to dashboard Cite

The aim of the study was to demonstrate the potential of the promotion and regulation of plant physiology and growth under control and copper stress conditions, and the impact of the exogenous application of methyl jasmonate on this potential. Runner bean plants were treated with methyl jasmonate (1 or 10 µM) (J; J1 or J10) and Cu (50 µM), and inoculated with a bacterial isolate (S17) originating from Spitsbergen soil, and identified as Pseudomonas luteola using the analytical profile index (API) test. Above- and under-ground plant parts were analyzed. The growth parameters; the concentration of the photosynthetic pigments, elements, flavonoids (FLAVO), phenolics (TPC), allantoin (ALLA), and low molecular weight organic acids (LMWOAs); the activity of antioxidant enzymes and enzymes of resistance induction pathways (e.g., superoxide dismutase (SOD), catalase (CAT), ascorbate (APX) and guaiacol (GPX) peroxidase, glucanase (GLU), and phenylalanine (PAL) and tyrosine ammonia-lyase (TAL)), and the antioxidant capacity (AC) were studied. The leaves exhibited substantially higher ALLA and LMWOA concentrations as well as PAL and TAL activities, whereas the roots mostly had higher activities for a majority of the enzymes tested (i.e., SOD, CAT, APX, GPX, and GLU). The inoculation with S17 mitigated the effect of the Cu stress. Under the Cu stress and in the presence of J10, isolate S17 caused an elevation of the shoot fresh weight, K concentration, and TAL activity in the leaves, and APX and GPX (also at J1) activities in the roots. In the absence of Cu, isolate S17 increased the root length and the shoot-to-root ratio, but without statistical significance. In these conditions, S17 contributed to a 236% and 34% enhancement of P and Mn, respectively, in the roots, and a 19% rise of N in the leaves. Under the Cu stress, S17 caused a significant increase in FLAVO and TPC in the leaves. Similarly, the levels of FLAVO, TPC, and AC were enhanced after inoculation with Cu and J1. Regardless of the presence of J, inoculation at Cu excess caused a reduction of SOD and CAT activities, and an elevation of GPX. The effects of inoculation were associated with the application of Cu and J, which modified plant response mainly in a concentration-dependent manner (e.g., PAL, TAL, and LMWOA levels). The conducted studies demonstrated the potential for isolate S17 in the promotion of plant growth.

show abstract

There is a direct link between allantoin concentration and cadmium tolerance in Arabidopsis

Cited by 22 publications

References 34 publications

Nucleotide Metabolism in Plants

Nucleotide Metabolism in Plants

UMP Kinase Regulates Chloroplast Development and Cold Response in Rice

Bacterial Isolate Inhabiting Spitsbergen Soil Modifies the Physiological Response of Phaseolus coccineus in Control Conditions and under Exogenous Application of Methyl Jasmonate and Copper Excess

Contact Info

Product

Resources

About