Two rice cytosolic ascorbate peroxidases differentially improve salt tolerance in transgenic Arabidopsis

Zhou, Lu; Liu, Dali; Liu, Shenkui

doi:10.1007/s00299-007-0395-7

Cited by 174 publications

(84 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…systems, which modulates protection from high light and a combination of drought and heat (Davletova et al, 2005a;Koussevitzky et al, 2008). Overexpression of rice APX1 and APX2 in Arabidopsis reduces the accumulation of hydrogen peroxide, restricts chlorophyll degradation, and enhances survival under salinity stress (Lu et al, 2007). We determined that the accumulation of both APX1 and APX2 mRNAs was upregulated by methyl viologen treatment in M202 and M202(Sub1), but the induction was more pronounced in the SUB1 genotype ( Figure 8).…”

Section: Sub1a Enhances Oxidative Stress Tolerancementioning

confidence: 99%

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

2010

View full text Add to dashboard Cite

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.

show abstract

Section: Sub1a Enhances Oxidative Stress Tolerancementioning

confidence: 99%

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

2010

View full text Add to dashboard Cite

show abstract

“…The previous study found the Apx genes in rice leaves showed a difference of their transcription in response to the abiotic stress [14,29]. Increase in tolerance against salinity stress was observed in Arabidopsis plant overexpressed with cApx gene [30]. The different transcription level of Apc gene(s) indicated that a variation of oxidative defence mechanism was developed depending on the type and level of the abiotic stress.…”

Section: The Apx Gene Expressionmentioning

confidence: 99%

The response of antioxidant genes in rice (Oryza sativa L.) seedling Cv. Cempo Ireng under drought and salinity stresses

Refli

Purwestri

2016

AIP Conference Proceedings

View full text Add to dashboard Cite

Effects of sodium azide (NaN 3 ) and cytokininon vegetative growth and yield of black rice plant (Oryza sativa L. 'Cempo Ireng') AIP Conference Proceedings 1755, 130005 (2016) ). The present concluded that dismutation of superdioxide radical and biosynthesis of reduced ascorbic acid in gluthationine-ascorbate cycle within cells were less in seedling under drought stress so that the oxidative damage of seedling under drought was higher than that under salinity

show abstract

“…Expression analysis reveals that OsAPX2 is upregulated by salt [168]. Arabidopsis plants expressing OsAPX2 exhibit higher ROS-scavenging activity and salt tolerance than those expressing OsAPX1 [104].…”

Section: Functional Proteinsmentioning

confidence: 99%

Toward Understanding Molecular Mechanisms of Abiotic Stress Responses in Rice

Gao

Chao

Lin

2008

Rice

View full text Add to dashboard Cite

Plants have evolved delicate mechanisms to cope with environmental stress. Following exposure to environmental stimuli, extracellular signals are perceived and transmitted through signal transduction cascades. Upon receipt and transmission of the signals, a number of stressrelated genes are induced, leading to stress adaptation in plant cells. Rice, which is a critical food grain for a large portion of the world's population, is frequently impacted by several abiotic stressors, the most important of which are drought, salinity, and cold. Exposure to environmental conditions outside of acceptable tolerance ranges can negatively affect rice growth and production. In this paper, a review of rice responses to abiotic stress is presented, with particular attention to the genes and pathways related to environmental stress tolerance. It is apparent that, while progress has been made in identifying genes involved in stress adaptation, many questions remain. Understanding the mechanisms of stress response in rice is important for all research designed to develop new rice varieties with improved tolerance.Keywords Abiotic stress . Rice . Signal perception and transduction . Transcription factor . Stress tolerance Plant growth and productivity can be adversely affected by abiotic stress. Plants are exposed to any number of potentially adverse environmental conditions such as water deficit, high salinity, extreme temperature, and submergence. In response, plants have evolved delicate mechanisms, from the molecular to the physiological level, to adapt to stressful environments.Rice is the staple food for more than half of the world's population. Evolved in a semi-aquatic, low-radiation habitat, rice exhibits distinct tolerance and susceptibilities to abiotic stresses among domesticated cereal crops [92]. Rice thrives in waterlogged soil and can tolerate submergence at levels that would kill other crops, and is moderately tolerant of salinity and soil acidity but is highly sensitive to drought and cold [92]. Cultivated over a broad region between 45°north and south latitudes, rice plants are faced with low temperature in temperate regions, submergence in tropical regions, water deficit in humid tropics, and other stressors [109].Arabidopsis is a good model in plant molecular biology and genetics research, and the majority of studies examining the impacts of abiotic stress have employed this plant [37,85,165,183,193]. The signaling pathways and regulatory network in Arabidopsis have been well characterized and well reviewed. Although progresses were also made on rice, reviews were less focused on this most important crop because of little functional genes characterized. Recent years, multiple genes contributing to abiotic stress responses in rice were identified by using genetics, reverse genetics, and molecular biology method. Here, we Rice

show abstract

Two rice cytosolic ascorbate peroxidases differentially improve salt tolerance in transgenic Arabidopsis

Cited by 174 publications

References 31 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

The response of antioxidant genes in rice (Oryza sativa L.) seedling Cv. Cempo Ireng under drought and salinity stresses

Toward Understanding Molecular Mechanisms of Abiotic Stress Responses in Rice

Contact Info

Product

Resources

About