The Enigmatic LEA Proteins and Other Hydrophilins

Battaglia, Marina; Olvera-Carrillo, Yadira; Garcíarrubio, Alejandro; Campos, Francisco; Covarrubias, Alejandra A.

doi:10.1104/pp.108.120725

Cited by 713 publications

(719 citation statements)

References 218 publications

(293 reference statements)

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“…S2). In addition, these proteins are similar to other LEA proteins in terms of physiochemical properties (Battaglia et al, 2008). ASR gene expression has been observed in different plant species, as well as different organs and growth stages (Battaglia et al, 2008).…”

Section: Discussionmentioning

confidence: 95%

“…As shown in Fig. 1, the ASR gene responded to environmental stresses, such as water deficit, salinity, low temperature, and limited light (Battaglia et al, 2008). Although the functions of ASR1 are still unknown, there is no evidence to suggest that this protein participates in the adaptive response to stress.…”

Section: Discussionmentioning

confidence: 99%

“…Cytosolic tomato ASR1 (SlASR1) has chaperone-like activity, and is able to confer stability to a number of proteins in response to heat and freeze-thaw cycle (Konrad and Bar-Zvi, 2008). Previous studies have also demonstrated the cryoprotective function of LEA group 7 (ASR1) proteins (Battaglia et al, 2008). Although ASR proteins play a role in the modulation of gene expression (Kalifa, 2004), no study has examined the antioxidant activity of the ASR1 protein.…”

Section: Discussionmentioning

confidence: 99%

“…The role of ASR1 protects in oxidative stress in plants was explored based on previous results, which demonstrated that the ASR1 protein was involved in the response against ROSinduced oxidative stress caused by NaCl, freezing, and dehydration (Battaglia et al, 2008). The effects of oxidative challenge on the growth rate and survival were evaluated in yeast cells transformed with the pVTU260 plasmid containing either the ASR1 gene or vector alone.…”

Section: Stress Tolerance To Hydrogen Peroxide and Redox State In Asrmentioning

confidence: 99%

“…In two rice varieties with different salt tolerance, the ASR1 homolog was highly expressed upon exposure to excess salt for 3 and 6 h. ASR1 expression was also shown to be developmentally regulated since expression levels of ASR1 mRNA increase during fruit ripening (Rom et al, 2006). In addition, ASR proteins share properties (protective properties against freezing and dehydration) with LEA proteins as they are considered to be group 7 LEA proteins (Battaglia et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Rice ASR1 Protein with Reactive Oxygen Species Scavenging and Chaperone-like Activities Enhances Acquired Tolerance to Abiotic Stresses in Saccharomyces cerevisiae

Kim

Yoon

2012

Molecules and Cells

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Abscisic acid stress ripening (ASR1) protein is a small hydrophilic, low molecular weight, and stress-specific plant protein. The gene coding region of ASR1 protein, which is induced under high salinity in rice (Oryza sativa Ilmi), was cloned into a yeast expression vector pVTU260 and transformed into yeast cells. Heterologous expression of ASR1 protein in transgenic yeast cells improved tolerance to abiotic stresses including hydrogen peroxide (H 2 O 2 ), high salinity (NaCl), heat shock, menadione, copper sulfate, sulfuric acid, lactic acid, salicylic acid, and also high concentration of ethanol. In particular, the expression of metabolic enzymes (Fba1p, Pgk1p, Eno2p, Tpi1p, and Adh1p), antioxidant enzyme (Ahp1p), molecular chaperone (Ssb1p), and pyrimidine biosynthesis-related enzyme (Ura1p) was up-regulated in the transgenic yeast cells under oxidative stress when compared with wild-type cells. All of these enzymes contribute to an alleviated redox state to H 2 O 2 -induced oxidative stress. In the in vitro assay, the purified ASR1 protein was able to scavenge ROS by converting H 2 O 2 to H 2 O. Taken together, these results suggest that the ASR1 protein could function as an effective ROS scavenger and its expression could enhance acquired tolerance of ROS-induced oxidative stress through induction of various cell rescue proteins in yeast cells.

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Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Stress Tolerance To Hydrogen Peroxide and Redox State In Asrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Rice ASR1 Protein with Reactive Oxygen Species Scavenging and Chaperone-like Activities Enhances Acquired Tolerance to Abiotic Stresses in Saccharomyces cerevisiae

Kim

Yoon

2012

Molecules and Cells

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Plant Stress Physiology

Smirnoff

2014

Encyclopedia of Life Sciences

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UKOver the last few years there has been an explosion of information on responses to abiotic stresses in the model plant Arabidopsis thaliana as well as crops such as rice. Much of the research has focussed on changes in gene transcription following stress imposition. The approach identifies potential 'stress tolerance genes' followed by assessment of their effects in mutants and genetically modified plants. Although this approach has produced plants that are apparently more stress resistant, evidence for translation to improved performance in the field has been very limited. Possible reasons include the use of unrealistic laboratory stress treatments and the use of plants that are not fully acclimatised to the variable and interacting environmental factors encountered in the field. Stress research is beginning to address this issue and more recent approaches are highlighting the importance of putting stress responses in the context of the control of plant growth by hormones, the initial perception of stress signals and in the context of understanding the physiological and metabolic adjustments that are needed for stress tolerance.

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Plant Desiccation Tolerance: A Survival Strategy with Exceptional Prospects for Climate‐Smart Agriculture

Hilhorst¹,

Farrant

2018

Annual Plant Reviews Online

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Drought is one of the main threats to agriculture worldwide because most of our staple crops are not very tolerant to dehydration stress. Some 135 species of angiosperms, however, are extremely tolerant of severe drought. These so‐called resurrection plants are desiccation tolerant because they can withstand drying to water contents below 0.1 gram water per gram dry weight and remain viable for extended periods of time, similar to most seeds. Indeed, recent research has shown that mechanisms of desiccation tolerance of different species, be it vegetative tissues or seeds, utilise the same basic ingredients, including anti‐oxidants, chaperone proteins, and specific carbohydrates. However, there is species‐specific behaviour, related to habitat, e.g. in cell wall properties and the manner in which photo‐oxidative damage is prevented upon drying. Crop plants produce desiccation‐tolerant seeds and, hence, possess the genomic information required for desiccation tolerance, but this is exclusively expressed in the seeds. Elucidation of the mechanisms of desiccation tolerance may enable the ‘release’ of this characteristic in the leaves, stems, and roots.

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The Enigmatic LEA Proteins and Other Hydrophilins

Cited by 713 publications

References 218 publications

Rice ASR1 Protein with Reactive Oxygen Species Scavenging and Chaperone-like Activities Enhances Acquired Tolerance to Abiotic Stresses in Saccharomyces cerevisiae

Rice ASR1 Protein with Reactive Oxygen Species Scavenging and Chaperone-like Activities Enhances Acquired Tolerance to Abiotic Stresses in Saccharomyces cerevisiae

Plant Stress Physiology

Plant Desiccation Tolerance: A Survival Strategy with Exceptional Prospects for Climate‐Smart Agriculture

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