Attenuation of Reactive Oxygen Production During Chilling in ABA-Treated Maize Cultured Cells

WenPing, Chen; Paul, Heiko

doi:10.1007/978-1-4615-0711-6_16

Cited by 12 publications

(5 citation statements)

References 56 publications

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“…The current study revealed that ABA significantly (P \ 0.01) enhanced proline concentration in grapevine plants upon subjecting to LTS, compared to vines without ABA pretreatment. These results are in agreement with the study of Chen and Li (2002) who reported increase of free proline concentration using 100 lM ABA application in maize cultured cells under LTS. As addressed above, proline has a key role in plant stress tolerance because of its multiple functions.…”

Section: Discussionsupporting

confidence: 95%

Role of exogenous abscisic acid in adapting of ‘Sultana’ grapevine to low-temperature stress

Karimi

Ahmad

2015

Acta Physiol Plant

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Abscisic acid (ABA) has a key role in some plant species under low-temperature stress (LTS). In this study the effects of ABA at four concentrations (0, 50, 100 and 200 lL) on electrolyte leakage (EL), visual damage index, soluble carbohydrate, proline, total phenolic compound and relative water content (RWC) of leaves of 'Sultana' grapevines were studied under LTS (0, 4 and -4°C). Moreover, to further elucidate the efficiency of foliar ABA on freezing tolerance, some relevant morphophysiological changes were evaluated at three sampling dates: September, October and November. The increase in cane and leaf EL and the visible symptoms of leaf damage caused by LTS were minimized by the application of ABA. Moreover, in ABA-treated vines, specifically at 200 lM, the contents of soluble carbohydrate, proline and total phenolic increased and the RWC decreased. These alterations in ABA-induced metabolism alleviated the deleterious effects of LTS on 'Sultana' grapevine. Freezing tolerance of ABA-treated vines improved within each sampling date in autumn. Foliar application of ABA at 200 lM decreased LT50 in September, October and November by -2.6, -3.6 and -3.9°C, respectively, as compared to those of control vines. This study also demonstrated that ABA was effective in shoot growth inhibition, leaf abscission and periderm development, indicating that ABA treatments advanced cold acclimation in grapevines. Increased fall freezing tolerance induced by foliar ABA application may be beneficial in nurseries, new established vineyards and for late-bearing cultivars in regions with fall frost events.

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Section: Discussionsupporting

confidence: 95%

Role of exogenous abscisic acid in adapting of ‘Sultana’ grapevine to low-temperature stress

Karimi

Ahmad

2015

Acta Physiol Plant

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“…LEA is important for membrane stabilization and the protection of proteins from denaturation when the cytoplasm becomes dehydrated ( Janská et al, 2010 ). MDAR is an important antioxidant enzyme that is critical to alleviate cold-induced oxidative damage ( Chen and Paul, 2002 ). Importantly, these defense-related genes were significantly induced by melatonin, exhibiting contrasting expression patterns with respect to the corresponding miRNAs, including miR159-5p , miR858 , miR8029-3p , and novel-m0048-3p ( Figures 5 and 6 ).…”

Section: Discussionmentioning

confidence: 99%

High-Throughput MicroRNA and mRNA Sequencing Reveals That MicroRNAs May Be Involved in Melatonin-Mediated Cold Tolerance in Citrullus lanatus L.

Dong

Chang

et al. 2016

Front. Plant Sci.

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Transcriptional regulation of cold-responsive genes is crucial for exogenous melatonin-mediated cold tolerance in plants. Nonetheless, how melatonin regulates cold-responsive genes is largely unknown. In this study, we found that exogenous melatonin improved cold tolerance in watermelon by regulating expression of microRNAs (miRNAs). We identified a set of miRNAs that were regulated by melatonin under unstressed or cold conditions. Importantly, mRNA-seq analysis revealed that melatonin-induced downregulation of some miRNAs, such as miR159-5p, miR858, miR8029-3p, and novel-m0048-3p correlated with the upregulation of target genes involved in signal transduction (CDPK, BHLH, WRKY, MYB, and DREB) and protection/detoxification (LEA and MDAR) under cold stress. These results suggest that miRNAs may be involved in melatonin-mediated cold tolerance in watermelon by negatively regulating the expression of target mRNAs.

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“…Also, the increased activity of the antioxidative enzymes such as superoxide dismutase, glutathione peroxidase, glutathione reductase, ascorbate peroxidase and catalase, as well as the presence of a series of non-enzymatic antioxidants, such as tripeptidthiol, glutathione, ascorbic acid (vitamin C) and alphatocopherol (vitamin E) play important role in cold acclimation and maintanance of cellular redox homeostasis (Chen and Li, 2002). Cold acclimation also affects cell lipid composition by increasing the proportion of unsaturated fatty acids making up the phospholipids, which is necessary for the maintenance of plasma membrane functionality (Rajashekar, 2000;De Palma et al, 2008).…”

Section: Low Temperature Stressmentioning

confidence: 99%

Temperature stress and redox homeostasis in agricultural crops

Awasthi

Bhandari

Nayyar

2015

Front. Environ. Sci.

225

137

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Plants are exposed to a wide range of environmental conditions and one of the major forces that shape the structure and function of plants are temperature stresses, which include low and high temperature stresses and considered as major abiotic stresses for crop plants. Due to global climate change, temperature stress is becoming the major area of concern for the researchers worldwide. The reactions of plants to these stresses are complex and have devastating effects on plant metabolism, disrupting cellular homeostasis and uncoupling major physiological and biochemical processes. Temperature stresses disrupt photosynthesis and increase photorespiration thereby altering the normal homeostasis of plant cells. The constancy of temperature, among different metabolic equilibria present in plant cells, depends to a certain extent on a homeostatically regulated ratio of redox components, which are present virtually in all plant cells. Several pathways, which are present in plant cells, enable correct equilibrium of the plant cellular redox state and balance fluctuations in plant cells caused by changes in environment due to stressful conditions. In temperature stresses, high temperature stress is considered to be one of the major abiotic stresses for restricting crop production worldwide. The responses of plants to heat stress vary with extent of temperature increase, its duration and the type of plant. On other hand, low temperature as major environmental factor often affects plant growth and crop productivity and leads to substantial crop loses. A direct result of stress-induced cellular changes is overproduction of reactive oxygen species (ROS) in plants which are produced in such a way that they are confined to a small area and also in specific pattern in biological responses. ROS (superoxide; O − 2 , hydroxyl radicals; OH − , alkoxyl radicals and non-radicals like hydrogen peroxide; H 2 O 2 and singlet oxygen; 1 O 2) are highly reactive and toxic and cause damage to proteins, lipids, carbohydrates which ultimately results in oxidative stress. ROS may also serve as signaling molecules in mediating important signal transduction pathways that coordinate an astonishing range of diverse plant processes under temperature stress. To counter temperature induced oxidative stress, plants upregulate a variety of enzymatic and non-enzymatic antioxidants which are also information-rich redox buffers and important components of redox signaling that interact with biomembrane-related compartments. They provide essential information on cellular redox state, and regulate gene expression associated with stress responses to optimize defense and survival, stress acclimation and tolerance. The work done by various researchers has explored a direct link between ROS scavenging and plant tolerance under temperature extremes in various crops which include legumes, cereals, oil crops and vegetables. There is ample need to develop temperature tolerance in crop plants by exploring suitable strategies to manage oxidative stress and maintain cel...

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Attenuation of Reactive Oxygen Production During Chilling in ABA-Treated Maize Cultured Cells

Cited by 12 publications

References 56 publications

Role of exogenous abscisic acid in adapting of ‘Sultana’ grapevine to low-temperature stress

Role of exogenous abscisic acid in adapting of ‘Sultana’ grapevine to low-temperature stress

High-Throughput MicroRNA and mRNA Sequencing Reveals That MicroRNAs May Be Involved in Melatonin-Mediated Cold Tolerance in Citrullus lanatus L.

Temperature stress and redox homeostasis in agricultural crops

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