Lipid peroxidation, chloroplastic pigments and antioxidant strategies in Carapa guianensis (Aubl.) subjected to water-deficit and short-term rewetting

G6PD is required for embryonic development in animals, as severe G6PD deficiency is lethal to mice, zebrafish and nematode. Lipid peroxidation is linked to membrane-associated embryonic defects in Caenorhabditis elegans (C. elegans). However, the direct link between lipid peroxidation and embryonic lethality has not been established. The aim of this study was to delineate the role of lipid peroxidation in gspd-1-knockdown (ortholog of g6pd) C. elegans during reproduction. tert-butyl hydroperoxide (tBHP) was used as an exogenous inducer. Short-term tBHP administration reduced brood size and enhanced germ cell death in C. elegans. The altered phenotypes caused by tBHP resembled GSPD-1 deficiency in C. elegans. Mechanistically, tBHP-induced malondialdehyde (MDA) production and stimulated calcium-independent phospholipase A2 (iPLA) activity, leading to disturbed oogenesis and embryogenesis. The current study provides strong evidence to support the notion that enhanced lipid peroxidation in G6PD deficiency promotes death of germ cells and impairs embryogenesis in C. elegans.

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Chitosan application in the induction of water deficit tolerance in maize plants

Acta Scientiarum Agronomy ◽

10.4025/actasciagron.v42i1.42463 ◽

2019 ◽

Vol 42 ◽

pp. e42463

Author(s):

Lorena Gabriela Almeida ◽

Paulo César Magalhães ◽

Décio Karam ◽

Eder Marcos da Silva ◽

Amauri Alves Alvarenga

Keyword(s):

Hydrogen Peroxide ◽

Lipid Peroxidation ◽

Antioxidant Enzymes ◽

Gas Exchange ◽

Water Deficit ◽

Foliar Application ◽

Water Restriction ◽

Biophysical Parameters ◽

Relative Water ◽

Maize Plants

The present research seeks to elucidate the feasibility of chitosan (CHT) in the induction of water deficit tolerance in different maize hybrids, contrasting tolerance to water restriction, tolerance and sensitivity. The maize plants were subjected to water deficit and foliar application of different chitosan doses (60, 100, 140, and 180 mg L-1) at the pre-flowering growth stage and evaluated during the stress period of fifteen days. To understand the induction behaviour of the tolerance to water restriction, biophysical parameters, such as water potential, relative water content and chlorophyll content, gas exchange, and biochemical assays, were quantified based on the activity of SOD, CAT, APX, and PAL antioxidant enzymes, lipid peroxidation activity and hydrogen peroxide content. Among the treatments, maize plants subjected to chitosan foliar application at a dose of 140 mg L-1 presented similar behavioural responses to plants under favourable irrigation conditions. Such positive responses are related to the high degree of activity of antioxidant enzymes, gas exchange and low levels of lipid peroxidation and hydrogen peroxide. The results support the potential use of CHT to increase tolerance to water stress.

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Primed Acclimation of Papaya Increases Short-term Water Use But Does Not Confer Long-term Drought Tolerance

HortScience ◽

10.21273/hortsci11600-16 ◽

2017 ◽

Vol 52 (3) ◽

pp. 441-449 ◽

Cited By ~ 4

Author(s):

Christopher Vincent ◽

Diane Rowland ◽

Bruce Schaffer

Keyword(s):

Drought Stress ◽

Soil Water ◽

Water Deficit ◽

Water Use ◽

Dry Matter ◽

Leaf Gas Exchange ◽

Severe Drought ◽

Dry Matter Accumulation ◽

Short Term ◽

Soil Water Tension

Primed acclimation (PA) is a regulated deficit irrigation (RDI) strategy designed to improve or maintain yield under subsequent drought stress. A previous study showed photosynthetic increases in papaya in response to a PA treatment. The present study was undertaken to test the duration of the PA effect when papaya plants were challenged with severe drought stress. Potted plants were stressed at 1, 2, and 3 months after conclusion of a PA treatment consisting of 3 weeks at soil water tension (SWT) of −20 kPa. Measurements included leaf gas exchange, root growth, and organ dry mass partitioning. PA did not reduce net CO2 assimilation (A) during the deficit period. At the end of the PA period, total dry matter accumulation per plant and for each organ was unaffected, but proportional dry matter partitioning to roots was favored. After resuming full irrigation, A increased and whole plant water use was more than doubled in PA-treated plants. However, water use and A of PA-treated plants decreased to reconverge with those of control plants by 6 weeks after the PA treatment. Over the course of the study, PA plants maintained lower stem height to stem diameter ratios, and shorter internode lengths. However, these changes did not improve photosynthetic response to any of the water-deficit treatments. We conclude that papaya exhibits some signs of stress memory, but that rapid short-term acclimation responses dominate papaya responses to soil water deficit.

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Diurnal changes in leaflet gas exchange, water status and antioxidant responses in Carapa guianensis plants under water-deficit conditions

Acta Physiologiae Plantarum ◽

10.1007/s11738-012-1043-6 ◽

2012 ◽

Vol 35 (1) ◽

pp. 13-21 ◽

Cited By ~ 4

Author(s):

Kaliene da Silva Carvalho ◽

Hugo Alves Pinheiro ◽

Reginaldo Alves Festucci-Buselli ◽

Dalton Dias da Silva Júnior ◽

Gledson Luiz Salgado de Castro ◽

...

Keyword(s):

Gas Exchange ◽

Water Deficit ◽

Water Status ◽

Diurnal Changes ◽

Antioxidant Responses ◽

Carapa Guianensis

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Effect of Short-term Hypothermia on Lipid Peroxidation and Antioxidant Enzyme Activity in Rats

Journal of Veterinary Medicine Series A ◽

10.1046/j.1439-0442.2002.00449.x ◽

2002 ◽

Vol 49 (6) ◽

pp. 286-288 ◽

Cited By ~ 20

Author(s):

S. Dede ◽

Y. Deger ◽

I. Meral

Keyword(s):

Lipid Peroxidation ◽

Enzyme Activity ◽

Antioxidant Enzyme ◽

Antioxidant Enzyme Activity ◽

Short Term

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Short-Term Acetaldehyde Exposure Depresses Ventricular Myocyte Contraction: Role of Cytochrome P450 Oxidase, Xanthine Oxidase, and Lipid Peroxidation

Alcoholism Clinical and Experimental Research ◽

10.1111/j.1530-0277.2003.tb04393.x ◽

2003 ◽

Vol 27 (4) ◽

pp. 577-583 ◽

Cited By ~ 30

Author(s):

Nicholas S. Aberle ◽

Jun Ren

Keyword(s):

Lipid Peroxidation ◽

Cytochrome P450 ◽

Xanthine Oxidase ◽

Ventricular Myocyte ◽

Short Term

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Effect of short-term fasting on urinary excretion of primary lipid peroxidation products and on markers of oxidative DNA damage in healthy women

Carcinogenesis ◽

10.1093/carcin/bgi337 ◽

2006 ◽

Vol 27 (7) ◽

pp. 1398-1403 ◽

Cited By ~ 27

Author(s):

Kyoung-Ho Lee ◽

Helmut Bartsch ◽

Jagadeesan Nair ◽

Dong-Ho Yoo ◽

Yun-Chul Hong ◽

...

Keyword(s):

Lipid Peroxidation ◽

Dna Damage ◽

Urinary Excretion ◽

Oxidative Dna Damage ◽

Short Term ◽

Lipid Peroxidation Products ◽

Healthy Women

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Water deficit-induced membrane injury and oxidative stress in two barley genotypes

Acta Societatis Botanicorum Poloniae ◽

10.5586/asbp.2002.002 ◽

2014 ◽

Vol 71 (1) ◽

pp. 17-21 ◽

Cited By ~ 1

Author(s):

Hanna Bandurska ◽

Jolanta Floryszak-Wieczorek

Keyword(s):

Oxidative Stress ◽

Lipid Peroxidation ◽

Water Stress ◽

Water Deficit ◽

Superoxide Radical ◽

Membrane Injury ◽

Induced Membrane ◽

Radical Generation ◽

And Oxidative Stress ◽

Barley Genotypes

The purpose of this paper was to examine the effect of water deficit on membrane injuries, superoxide radical generation and lipid peroxidation in the leaves of two barley genotypes. Six-day-old seedlings of the cv. Aramir and line R567 were used in the experiments. According to our earlier work these genotypes significantly differ in the level of membrane injuries under water deficit conditions. Water stress was applied directly to leaves or to roots. The stress caused considerable membrane injuries in the leaves of all genotypes investigated.The percentage membrane injury was higher in the line R567 than in the cv. Aramir. Water stress imposed on leaves caused higher membrane injuries than water stress imposed on roots. The water stress treatment followed by an oxidative stress in the leaves. Line R567 having noticeably larger membrane injuries also exhibited a higher level of superoxide radical generation than the cv. Aramir. The level of lipid peroxidation increased in the both genotypes under the conditions of water stress imposed on leaves, but not on roots.

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