Plant Polyphenol Antioxidants and Oxidative Stress

Urquiaga, Inés; Leighton, Federico

doi:10.4067/s0716-97602000000200004

Cited by 335 publications

(215 citation statements)

References 39 publications

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“…Plants have evolved a wide range of defense systems to survive continuous assault by an arsenal of biotic attacks, constantly changing weather and other environmental conditions [35,41,42,45,55,56,61,63,69,73,75,77]. Unlocking the physiological and molecular basis for the plasticity of plant defending metabolism not only provides access to a largely untapped resource of genes and selection markers for breeding enhanced stress tolerance in crops but also ensures improved food security and agricultural sustainable development worldwide [5,8,10,19,32,44,48,52,62].…”

Section: Discussionmentioning

confidence: 99%

“…Living organisms can be viewed as reducing-oxidising (redox) systems in which catabolic, largely oxidative processes produce energy and anabolic, principally reductive processes assimilate it [5,35,61,75,77]. Aerobic organisms exploit the redox potential of oxygen while controlling oxidation, in particular, the plants in arid and semi-arid zones.…”

Section: Discussionmentioning

confidence: 99%

“…In this situation acclamatory changes in gene expression are induced in attempt to restore redox homeostasis [73,75]. If the repertoire of genomic responses is not insufficient or not appropriate then primary metabolism is impaired, oxidative stress becomes increasingly important and cell death and senescence responses are triggered [5,59,61]. One of the earliest responses of plants to pathogens, wounding, drought, extremes of temperature or physical and chemical shocks is the accumulation of active oxygen species (AOS) such as superoxide, hydroxyl radicals, hydrogen peroxide and singlet oxygen [35].…”

Section: Discussionmentioning

confidence: 99%

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Relationship between water use efficiency (WUE) and production of different wheat genotypes at soil water deficit

Shao

Chu

et al. 2006

Colloids and Surfaces B: Biointerfaces

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Through 2-year field experiments, 7 wheat genotypes were better in their field yield. These 7 wheat genotypes and other 3 wheat species, which are being popularized on a large scale in different locations of China, were selected as experimental materials for the sake of measuring their difference in WUE and production and comparing their relationship at soil water deficits, future more, providing better drought resistance lines and theoretical guide for wheat production and practices and exploring anti-drought physiological mechanisms of different wheat genotypes. Under the condition of 3 soil-water-stress treatments (75% field capacity (FC), 55% FC, 45% FC, named level 1, level 2 and level 3, respectively), pot experiments for them were conducted and the related data were collected from their life circle. The main results were as followed: (1) according to the selected soil stress levels, water use efficiency (WUE) of 10 different wheat genotypes was divided into two groups (A and B); group A included genotypes 2, 3, 4, 5, 6, 7, 8, whose WUE decreased basically from level 1 to level 3 and reached individual peak of WUE at level 1; Group 2 included genotypes 1, 9, 10, whose WUE reached their individual peak at level 2; (2) based on total water consumption through all life circle, genotypes 1, 4, 8, 9 had lower water consumption (TWC) at level 1, genotypes 2, 3, 5, 6, 7 lower TWC at level 2, genotype 10 lower TWC at level 3; (3) at level 1, genotypes 2, 3, 4, 5, 6, 7, 8 had higher grain weight of single spike (GWSS), genotypes 1, 9, 10 better GWSS at level 2, which was in good line with individual WUE of different wheat genotypes; (4) by analyzing the indexes related to examining cultivars, it was found that genotypes 1, 2, 3, 4, 5, 6, 9, 10 had longer plant length (PL), spike length (SL), bigger grain number (GN) except genotypes 7 and 8 at level 1, RL was in better line with genotypes 1, 2, 3, 8, 9, 10, but not in the other genotypes at level 1.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Relationship between water use efficiency (WUE) and production of different wheat genotypes at soil water deficit

Shao

Chu

et al. 2006

Colloids and Surfaces B: Biointerfaces

View full text Add to dashboard Cite

show abstract

“…Drought is a complex physical-chemical process, in which many biological macromolecules and small molecules are involved, such as nucleic acids (DNA, RNA, microRNA), proteins, carbohydrates, lipids, hormones, ions, free radicals, mineral elements [3,8,12,13,18,20,22,26,31,43,49,50,55,65]. In addition, drought is also related to salt stress, cold stress, high temperature stress, acid stress, alkaline stress, pathological reactions, senescence, growth, development, cell cycle, UV-B damage, wounding, embryogenesis, flowering, signal transduction and so on [16,17,[26][27][28]36,37,[44][45][46][47][52][53][54]62]. Therefore, drought is connected with almost all aspects of biology.…”

Section: Introductionmentioning

confidence: 99%

“…With progressive global climate change and increasing shortage of water resources and worsening eco-environment, wheat production is influenced greatly [7,15,29,[32][33][34]38,41,51,58,64]. Anti-oxidative performance in higher plants have been thought to be one of the main physiological mechanisms and be central in responses to soil water deficits [12,27,28,47,52,53]. POD (peroxidase), SOD (superoxide dismutase) and CAT (catalase) are main components of anti-oxidative machinery for drought resistance in higher plants.…”

Section: Introductionmentioning

confidence: 99%