Engineered drought-induced biosynthesis of α-tocopherol alleviates stress-induced leaf damage in tobacco

Espinoza, Analía; Martín, Alex San; López-Climent, María F.; Ruíz-Lara, Simón; Gómez-Cádenas, Aurelio; Casaretto, José A.

doi:10.1016/j.jplph.2013.04.004

Cited by 53 publications

(19 citation statements)

References 41 publications

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“…For example, the D-homeolog of Triplet 3259 ( SNF1-RELATED PROTEIN KINASE 2, SnRK2 ) was specifically up-regulated under HD-6 h compared to A- and B-homeolog, although all of three were abundantly expressed at HS-6 h. Similarly, A-homeolog of Triplet 126 (homogentisate phytyltransferase, HPT1 ) exhibited peak expression at HD-1 h compared to the other two. Interestingly, it has been reported that SnRK2 and HPT1 were involved in drought stress response through ABA signaling pathway and tocopherol biosynthesis, respectively [ 75 , 76 ]. In addition, Triplet 3780, encoding a NAC transcription factor XND1, was proved to negatively regulate lignocellulose synthesis and programmed cell death in xylem [ 77 ].…”

Section: Resultsmentioning

confidence: 99%

Temporal transcriptome profiling reveals expression partitioning of homeologous genes contributing to heat and drought acclimation in wheat (Triticum aestivum L.)

et al. 2015

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BackgroundHexaploid wheat (Triticum aestivum) is a globally important crop. Heat, drought and their combination dramatically reduce wheat yield and quality, but the molecular mechanisms underlying wheat tolerance to extreme environments, especially stress combination, are largely unknown. As an allohexaploid, wheat consists of three closely related subgenomes (A, B, and D), and was reported to show improved tolerance to stress conditions compared to tetraploid. But so far very little is known about how wheat coordinates the expression of homeologous genes to cope with various environmental constraints on the whole-genome level.ResultsTo explore the transcriptional response of wheat to the individual and combined stress, we performed high-throughput transcriptome sequencing of seedlings under normal condition and subjected to drought stress (DS), heat stress (HS) and their combination (HD) for 1 h and 6 h, and presented global gene expression reprograms in response to these three stresses. Gene Ontology (GO) enrichment analysis of DS, HS and HD responsive genes revealed an overlap and complexity of functional pathways between each other. Moreover, 4,375 wheat transcription factors were identified on a whole-genome scale based on the released scaffold information by IWGSC, and 1,328 were responsive to stress treatments. Then, the regulatory network analysis of HSFs and DREBs implicated they were both involved in the regulation of DS, HS and HD response and indicated a cross-talk between heat and drought stress. Finally, approximately 68.4 % of homeologous genes were found to exhibit expression partitioning in response to DS, HS or HD, which was further confirmed by using quantitative RT-PCR and Nullisomic-Tetrasomic lines.ConclusionsA large proportion of wheat homeologs exhibited expression partitioning under normal and abiotic stresses, which possibly contributes to the wide adaptability and distribution of hexaploid wheat in response to various environmental constraints.Electronic supplementary materialThe online version of this article (doi:10.1186/s12870-015-0511-8) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Temporal transcriptome profiling reveals expression partitioning of homeologous genes contributing to heat and drought acclimation in wheat (Triticum aestivum L.)

et al. 2015

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“…Vitamin E deficiency has also been shown to retard growth and change responses to abiotic stress conditions. In addition, increased vitamin E content has been shown to diminish detrimental effects of environmental stress in plants 32 .…”

Section: Why Do All Plants Have Antioxidant Potential?mentioning

confidence: 99%

Significance of Antioxidant Potential of Plants and its Relevance to Therapeutic Applications

Kasote

Katyare²,

Hegde³

et al. 2015

Int. J. Biol. Sci.

898

485

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Oxidative stress has been identified as the root cause of the development and progression of several diseases. Supplementation of exogenous antioxidants or boosting endogenous antioxidant defenses of the body is a promising way of combating the undesirable effects of reactive oxygen species (ROS) induced oxidative damage. Plants have an innate ability to biosynthesize a wide range of non-enzymatic antioxidants capable of attenuating ROS- induced oxidative damage. Several in vitro methods have been used to screen plants for their antioxidant potential, and in most of these assays they revealed potent antioxidant activity. However, prior to confirming their in vivo therapeutic efficacy, plant antioxidants have to pass through several physiopharmacological processes. Consequently, the findings of in vitro and in vivo antioxidant potential assessment studies are not always the same. Nevertheless, the results of in vitro assays have been irrelevantly extrapolated to the therapeutic application of plant antioxidants without undertaking sufficient in vivo studies. Therefore, we have briefly reviewed the physiology and redox biology of both plants and humans to improve our understanding of plant antioxidants as therapeutic entities. The applications and limitations of antioxidant activity measurement assays were also highlighted to identify the precise path to be followed for future research in the area of plant antioxidants.

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“…Antioxidants can protect cells against oxidative stress mainly caused by the active free radicals in human beings, and they have been considered as powerful remedies to improve plant defense responses (Espinoza et al, 2013). The oxidative stress plays a key role in the etiology of a variety of diseases and metabolic disorders.…”

Section: Antioxidant Activitymentioning

confidence: 99%

Chemical composition of the essential oils and extracts of Achillea species and their biological activities: A review

Mohammadhosseini

Sarker

Akbarzadeh

2017

Journal of Ethnopharmacology

163

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Engineered drought-induced biosynthesis of α-tocopherol alleviates stress-induced leaf damage in tobacco

Cited by 53 publications

References 41 publications

Temporal transcriptome profiling reveals expression partitioning of homeologous genes contributing to heat and drought acclimation in wheat (Triticum aestivum L.)

Temporal transcriptome profiling reveals expression partitioning of homeologous genes contributing to heat and drought acclimation in wheat (Triticum aestivum L.)

Significance of Antioxidant Potential of Plants and its Relevance to Therapeutic Applications

Chemical composition of the essential oils and extracts of Achillea species and their biological activities: A review

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