Relationships between lipid peroxidation and anoxia tolerance in a range of species during post‐anoxic reaeration

Blokhina, Olga; Fagerstedt, Kurt; Чиркова, Т. В.

doi:10.1034/j.1399-3054.1999.105405.x

Cited by 63 publications

(42 citation statements)

References 38 publications

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“…In addition to dehydration tolerance, the ability to manage ROS detoxification can influence survival of a submergence event. The specific activity of SOD is more significantly induced upon reoxygenation in rhizomes of submergence-tolerant Iris pseudacorus than intolerant Iris germanica (Monk et al, 1987), which is negatively correlated with lipid peroxidation (Blokhina et al, 1999). Similarly, submergence-tolerant FR13A rice, the donor of SUB1A in this study, restricts lipid peroxidation and chlorophyll degradation following desubmergence compared with intolerant IR42 (Ella et al, 2003).…”

Section: Discussionsupporting

confidence: 46%

The Submergence Tolerance Regulator SUB1A Mediates Crosstalk between Submergence and Drought Tolerance in Rice

2010

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Submergence and drought are major constraints to rice (Oryza sativa) production in rain-fed farmlands, both of which can occur sequentially during a single crop cycle. SUB1A, an ERF transcription factor found in limited rice accessions, dampens ethylene production and gibberellic acid responsiveness during submergence, economizing carbohydrate reserves and significantly prolonging endurance. Here, we evaluated the functional role of SUB1A in acclimation to dehydration. Comparative analysis of genotypes with and without SUB1A revealed that SUB1A enhanced recovery from drought at the vegetative stage through reduction of leaf water loss and lipid peroxidation and increased expression of genes associated with acclimation to dehydration. Overexpression of SUB1A augmented ABA responsiveness, thereby activating stressinducible gene expression. Paradoxically, vegetative tissue undergoes dehydration upon desubmergence even though the soil contains sufficient water, indicating that leaf desiccation occurs in the natural progression of a flooding event.Desubmergence caused the upregulation of gene transcripts associated with acclimation to dehydration, with higher induction in SUB1A genotypes. SUB1A also restrained accumulation of reactive oxygen species (ROS) in aerial tissue during drought and desubmergence. Consistently, SUB1A increased the abundance of transcripts encoding ROS scavenging enzymes, resulting in enhanced tolerance to oxidative stress. Therefore, in addition to providing robust submergence tolerance, SUB1A improves survival of rapid dehydration following desubmergence and water deficit during drought.

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Section: Discussionsupporting

confidence: 46%

The Submergence Tolerance Regulator SUB1A Mediates Crosstalk between Submergence and Drought Tolerance in Rice

2010

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“…Furthermore, we cannot exclude that galactolipids could play a role in reoxygenation, a severe stress that occurs after the waters recede (Biemelt et al, 1998;Blokhina et al, 1999;Branco-Price et al, 2008). However, in our survival assays, this stress was also present and did not cause a different fitness of the mutants (Figs.…”

Section: Galactolipids Seem To Play No Major Role In the Survival Undmentioning

confidence: 80%

A Shoot-Specific Hypoxic Response of Arabidopsis Sheds Light on the Role of the Phosphate-Responsive Transcription Factor PHOSPHATE STARVATION RESPONSE1

et al. 2014

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Plant responses to biotic and abiotic stresses are often very specific, but signal transduction pathways can partially or completely overlap. Here, we demonstrate that in Arabidopsis (Arabidopsis thaliana), the transcriptional responses to phosphate starvation and oxygen deficiency stress comprise a set of commonly induced genes. While the phosphate deficiency response is systemic, under oxygen deficiency, most of the commonly induced genes are found only in illuminated shoots. This jointly induced response to the two stresses is under control of the transcription factor PHOSPHATE STARVATION RESPONSE1 (PHR1), but not of the oxygen-sensing N-end rule pathway, and includes genes encoding proteins for the synthesis of galactolipids, which replace phospholipids in plant membranes under phosphate starvation. Despite the induction of galactolipid synthesis genes, total galactolipid content and plant survival are not severely affected by the up-regulation of galactolipid gene expression in illuminated leaves during hypoxia. However, changes in galactolipid molecular species composition point to an adaptation of lipid fluxes through the endoplasmic reticulum and chloroplast pathways during hypoxia. PHR1-mediated signaling of phosphate deprivation was also light dependent. Because a photoreceptor-mediated PHR1 activation was not detectable under hypoxia, our data suggest that a chloroplast-derived retrograde signal, potentially arising from metabolic changes, regulates PHR1 activity under both oxygen and phosphate deficiency.

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“…Data are the mean of three replicates with vertical bar represents standard deviation. LSD, *P \ 0.05 rice seedlings need protection from ROS [5]. Potentially 1 O 2 are generated in Photosynthesis-II (PS II) reaction centres and light harvesting complex (LHC) and O 2 -is generated in Photosynthesis-I (PS I) acceptor side [21].…”

Section: Discussionmentioning

confidence: 99%

Characterization of Leaf Gas Exchange and Anti-oxidant Defense of Rice (Oryza sativa L.) Cultivars Differing in Submergence Tolerance Owing to Complete Submergence and Consequent Re-aeration

Panda

Sarkar

2013

Agric Res

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The impact of submergence on the photosynthesis and antioxidant capacities in three Indica rice cultivars namely FR 13A, IR 42, and Sabita having differential response to flooding were examined under 8 days (d) of complete submergence and subsequent re-aeration for 24 h. All upon three genotypes showed inhibition of CO 2 photosynthetic rate due to complete submergence; this was accompanied with the decrease in the Rubisco activity, stomatal conductance (g s ), and leaf chlorophyll (Chl) content. These parameters decreased further after 24 h of re-aeration. The decrease was more pronounced in sensitive cultivar, IR 42, and elongating type cultivar, Sabita. Sensitivity of elongating type cultivar under complete submergence was alike to submergence sensitive type cultivar. The activities of antioxidant enzymes such as superoxide dismutase, catalase, guaiacol peroxidase, ascorbate peroxidase, dehydroascorbate reductase, and glutathione reductase and levels of ascorbate were found to be significantly high in tolerant cv. FR 13A during submergence and subsequent re-aeration period. This study indicates that the suppression of CO 2 photo-assimilation under submergence was not only due to decrease of g s and leaf chlorophyll content but mainly due to the inhibition of rubisco activity. A greater protection of the photosynthetic system was observed through antioxidant system, since the degree of protection was more, when the levels of ascorbate and the activities of antioxidant enzymes were high.

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Relationships between lipid peroxidation and anoxia tolerance in a range of species during post‐anoxic reaeration

Cited by 63 publications

References 38 publications

The Submergence Tolerance Regulator SUB1A Mediates Crosstalk between Submergence and Drought Tolerance in Rice

The Submergence Tolerance Regulator SUB1A Mediates Crosstalk between Submergence and Drought Tolerance in Rice

A Shoot-Specific Hypoxic Response of Arabidopsis Sheds Light on the Role of the Phosphate-Responsive Transcription Factor PHOSPHATE STARVATION RESPONSE1

Characterization of Leaf Gas Exchange and Anti-oxidant Defense of Rice (Oryza sativa L.) Cultivars Differing in Submergence Tolerance Owing to Complete Submergence and Consequent Re-aeration

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