Effect of abiotic stress on the abundance of different vitamin B6 vitamers in tobacco plants

Huang, ShuoHao; Zhang, Jianyun; Wang, LingHong; Huang, LongQuan

doi:10.1016/j.plaphy.2013.02.010

Cited by 25 publications

(15 citation statements)

References 24 publications

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“…Vitamin B 6 was demonstrated to play a crucial role in protecting cells from oxidative stress because it exhibits antioxidant activity (Vanderschuren et al 2013). Similarly, Huang et al (2013) revealed that abiotic stresses increased the abundance of different B 6 vitamers, particularly pyridoxine in tobacco plants. Therefore, we deduce that the high concentration of pyridoxine glucoside helps alleviate the osmotic stress caused by salinity stress in hulless barley.…”

Section: Discussionmentioning

confidence: 94%

Metabolite profiling in two contrasting Tibetan hulless barley cultivars revealed the core salt-responsive metabolome and key salt-tolerance biomarkers

Wang

Zeng

et al. 2019

AoB PLANTS

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Salinity stress represents one of the most harmful abiotic stresses for agricultural productivity. Tibetan hulless barley is an important economic crop widely grown in highly stressful conditions in the Qinghai-Tibet Plateau and is often challenged by salinity stress. To investigate the temporal metabolic responses to salinity stress in hulless barley, we performed a widely targeted metabolomic analysis of 72 leaf samples from two contrasting cultivars. We identified 642 compounds 57 % of which were affected by salt stress in the two cultivars, principally amino acids and derivatives, organic acids, nucleotides, and derivatives and flavonoids. A total of 13 stress-related metabolites including piperidine, L-tryptophan, L-glutamic acid, L-saccharopine, L-phenylalanine, 6-methylcoumarin, cinnamic acid, inosine 5′-monophosphate, aminomalonic acid, 6-aminocaproic acid, putrescine, tyramine and abscisic acid (ABA) represent the core metabolome responsive to salinity stress in hulless barley regardless of the tolerance level. In particular, we found that the ABA signalling pathway is essential to salt stress response in hulless barley. The high tolerance of the cultivar 0119 is due to a metabolic reprogramming at key stress times. During the early salt stress stages (0–24 h), 0119 tended to save energy through reduced glycolysis, nucleotide metabolism and amino acid synthesis, while increased antioxidant compounds such as flavonoids. Under prolonged stress (48–72 h), 0119 significantly enhanced energy production and amino acid synthesis. In addition, some important compatible solutes were strongly accumulated. By comparing the two cultivars, nine salt-tolerance biomarkers, mostly unreported salt-tolerance compounds in plants, were uncovered. Our study indicated that the salt tolerant hulless barley cultivar invokes a tolerance strategy which is conserved in other plant species. Overall, we provide for the first time some extensive metabolic data and some important salt-tolerance biomarkers which may assist in efforts to improve hulless barley tolerance to salinity stress.

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Section: Discussionmentioning

confidence: 94%

Metabolite profiling in two contrasting Tibetan hulless barley cultivars revealed the core salt-responsive metabolome and key salt-tolerance biomarkers

Wang

Zeng

et al. 2019

AoB PLANTS

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“…Cysteine plays a critical role in protection against abiotic/biotic stresses thanks to its derivatives, such as GSH and phytochelatin polymers 84, 85 . Moreover, an upregulation of pyridoxal phosphate (PLP) coenzyme was observed; PLP is important for the functioning of several aminotransferases, thus playing a role in N metabolism, and is notably involved in several stress responses 86 .…”

Section: Discussionmentioning

confidence: 99%

Transcriptomic response of durum wheat to nitrogen starvation

Curci

Cigliano

Zuluaga

et al. 2017

Sci Rep

126

123

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Nitrogen (N) is a key macronutrient representing a limiting factor for plant growth and development and affects productivity in wheat. In this study, durum wheat response to N chronic starvation during grain filling was investigated through a transcriptomic approach in roots, leaves/stems, flag leaf and spikes of cv. Svevo. Nitrogen stress negatively influenced plant height, tillering, flag leaf area, spike and seed traits, and total N content. RNA-seq data revealed 4,626 differentially expressed genes (DEGs). Most transcriptomic changes were observed in roots, with 3,270 DEGs, while 963 were found in leaves/stems, 470 in flag leaf, and 355 in spike tissues. A total of 799 gene ontology (GO) terms were identified, 180 and 619 among the upregulated and downregulated genes, respectively. Among the most addressed GO categories, N compound metabolism, carbon metabolism, and photosynthesis were mostly represented. Interesting DEGs, such as N transporters, genes involved in N assimilation, along with transcription factors, protein kinases and other genes related to stress were highlighted. These results provide valuable information about the transcriptomic response to chronic N stress in durum wheat, which could be useful for future improvement of N use efficiency.

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“…5; Supplemental Table S2), PDX1.3 protein accumulated and the total B 6 level increased by 60% in response to UV-B exposure (Ristilä et al, 2011); total B 6 also increased by 60% in response to heat stress (Moccand et al, 2014). Levels of pyridoxal 59-phosphate and free pyridoxal or pyridoxine likewise increased by about 2-fold in tobacco exposed to chilling, UV radiation, osmotic stress, oxidative stress, or drought (Huang et al, 2013).…”

Section: Vitamin Bmentioning

confidence: 99%

Does Abiotic Stress Cause Functional B Vitamin Deficiency in Plants?

et al. 2016

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B vitamins are the precursors of essential metabolic cofactors but are prone to destruction under stress conditions. It is therefore a priori reasonable that stressed plants suffer B vitamin deficiencies and that certain stress symptoms are metabolic knock-on effects of these deficiencies. Given the logic of these arguments, and the existence of data to support them, it is a shock to realize that the roles of B vitamins in plant abiotic stress have had minimal attention in the literature (100-fold less than hormones) and continue to be overlooked. In this article, we therefore aim to explain the connections among B vitamins, enzyme cofactors, and stress conditions in plants. We first outline the chemistry and biochemistry of B vitamins and explore the concept of vitamin deficiency with the help of information from mammals. We then summarize classical and recent evidence for stress-induced vitamin deficiencies and for plant responses that counter these deficiencies. Lastly, we consider potential implications for agriculture.

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Effect of abiotic stress on the abundance of different vitamin B6 vitamers in tobacco plants

Cited by 25 publications

References 24 publications

Metabolite profiling in two contrasting Tibetan hulless barley cultivars revealed the core salt-responsive metabolome and key salt-tolerance biomarkers

Metabolite profiling in two contrasting Tibetan hulless barley cultivars revealed the core salt-responsive metabolome and key salt-tolerance biomarkers

Transcriptomic response of durum wheat to nitrogen starvation

Does Abiotic Stress Cause Functional B Vitamin Deficiency in Plants?

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