Differential antioxidation activities in two alfalfa cultivars under chilling stress

Wang, Wenbin; Kim, Yun-Hee; Lee, Haeng‐Soon; Deng, Xin; Kwak, Sang‐Soo

doi:10.1007/s11816-009-0102-y

Cited by 20 publications

(15 citation statements)

References 31 publications

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“…Each plant has its own anti-oxidative system where ROS-scavenging enzymes such as SOD (superoxide dismutase), CAT (catalase), APO (ascorbate peroxidase), POX (peroxidase) and GR (glutathione reductase) come into play along with non-enzymatic antioxidants such as glutathione (GSH), ascorbate (AsA) and carotenoids (Hasanuzzaman et al 2013). ROS quenching by anti-oxidative machinery is linked to stress tolerance, e.g., higher cold tolerance was observed in plants with enhanced activities of anti-oxidative enzymes in chickpea (Kumar et al 2011b) and alfalfa (Wang et al 2009). Soybean seedlings exposed to very low temperature (1°C) increased activities of anti-oxidative enzymes (Posmyk et al 2005).…”

Section: Temperature-induced Oxidative Stressmentioning

confidence: 99%

Temperature sensitivity of food legumes: a physiological insight

Bhandari

Sharma

Rao³

et al. 2017

Acta Physiol Plant

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Of the various environmental stresses that a plant can experience, temperature has the widest and most far-reaching effects on legumes. Temperature extremes, both high (heat stress) and low (cold stress), are injurious to plants at all stages of development, resulting in severe loss of productivity. In response to unfavorable temperatures, plant biomolecules such as stress proteins, enzymatic and non-enzymatic antioxidants, organic osmolytes and phytohormones come into play, usually, as a part of the plant defense mechanisms. The accumulation of these molecules, which may be useful as metabolic indicators of stress tolerance, depend on the plant species exposed to the temperature stress, its intensity and duration. Some of these molecules such as osmolytes, non-enzymatic antioxidants and phytohormones may be supplied exogenously to improve temperature stress tolerance. Legumes show varying degrees of sensitivity to high and low-temperature stresses, which reduces their potential performance at various developmental stages. To address the ever-fluctuating temperature extremes that various legumes are being constantly exposed, efforts are being made to develop tolerant plant varieties via conventional breeding methods as well as more recent molecular breeding techniques. In this review, we describe the progress made towards the adverse effects of abnormal temperatures on various growth stages in legumes and propose appropriate strategies to resolve these effects.

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Section: Temperature-induced Oxidative Stressmentioning

confidence: 99%

Temperature sensitivity of food legumes: a physiological insight

Bhandari

Sharma

Rao³

et al. 2017

Acta Physiol Plant

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“…Thus, the chloroplast and mitochondria are the two most vulnerable to ROS. The cellular membranes and other macro-molecules, like proteins, nucleic acid, lipids, glycosides, etc., are more sensitive to cytosolic and organellespecific ROS (Wang et al 2009). Cellular impairment in terms of different metabolic events, which include chlorophyll attenuation, lipid peroxidation, protein carbonylation, oxidation of -SH groups of proteins and other organic moieties, reduction of enoic fatty acids, etc., are accelerated by these ROS and thus their cellular status or performance becomes retarded.…”

Section: Introductionmentioning

confidence: 99%

Differential responses of two rice varieties to salt stress

Ghosh

Adak

Ghosh

et al. 2010

Plant Biotechnol Rep

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Two rice varieties, viz. Nonabokra and Pokkali, have been evaluated for their responses to salinity in terms of some physiological and biochemical attributes. During the exposure to salinity (200 mM concentration of sodium chloride for 24, 48, and 72 h), a significant increase in sodium was recorded which was also concomitant with the changes of other metabolic profiles like proline, phenol, polyamine, etc. The protein oxidation was significantly increased and also varied between the two cultivars. The changes in activities of anti-oxidative enzymes under stress were significantly different to the control. The detrimental effects of salinity were also evident in terms of lipid peroxidation, chlorophyll content, protein profiles, and generation of free radicals; and these were more pronounced in Pokkali than in Nonabokra. The assessment and analysis of these physiological characters under salinity could unravel the mechanism of salt responses revealed in this present study and thus might be useful for selection of tolerant plant types under the above conditions of salinity.

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“…Some studies show elevation of SOD in chilling-stressed plants (Kuk et al 2003), while the others report decrease in its activity (Zhang et al 1995). It has been reported that genotypes expressing higher SOD activity possess superior cold tolerance (Huang and Guo 2005;Wang et al 2009). Our findings on CAT and APX activity are in agreement with observations on rice (Guo et al 2006) and alfalfa (Wang et al 2009), where cold-tolerant genotypes had greater activity of these enzymes.…”

Section: Discussionmentioning

confidence: 99%

Growth and metabolic responses of contrasting chickpea (Cicer arietinum L.) genotypes to chilling stress at reproductive phase

et al. 2010

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Chilling stress (\10°C) at reproductive phase of chickpea results in abortion of flowers and pods leading to poor yield. The metabolic causes associated with cold sensitivity of chickpea are not well understood. Hence, in the present study, we evaluated four chickpea genotypes (ICC 16348, ICC 16349, PBG1 and GPF2) having contrasting cold sensitivity for their reproductive growth and metabolism subjected to cold stress (average day temperature: 17.6°C; average night temperature: 4.9°C). Genotypes ICC 16348 and ICC 16349 showed flowering and set pods, while PBG1 and GPF2 failed to do so during the stress conditions indicating the former to be cold tolerant. The stress injury in the leaves such as increase in electrolyte leakage, decrease in chlorophyll content and relative leaf water content was significantly less in ICC 16348 and ICC 16349 genotypes. The analysis of carbohydrates indicated total sugars and starch to be present in greater content in ICC 16348 and ICC 16349 relative to PBG1 and GPF2 genotypes. The enzymes related to carbohydrate metabolism such as b-amylase, invertase and sucrose synthase showed significantly higher activity in the leaves of ICC 16348 and ICC 16349 compared to the other two genotypes. PBG1 and GPF2 genotypes experienced greater oxidative stress measured as malondialdehyde and hydrogen peroxide. ICCV 16348 and ICC 16349 possessed significantly higher levels of enzymatic (superoxide dismutase, catalase, ascorbate peroxidase) and non-enzymatic antioxidants (proline and ascorbic acid) relative to PBG1 and GPF2. Particularly, proline and ascorbic acid were markedly higher in cold-tolerant genotypes compared to the sensitive ones suggesting their deciding role in governing the cold tolerance.

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Differential antioxidation activities in two alfalfa cultivars under chilling stress

Cited by 20 publications

References 31 publications

Temperature sensitivity of food legumes: a physiological insight

Temperature sensitivity of food legumes: a physiological insight

Differential responses of two rice varieties to salt stress

Growth and metabolic responses of contrasting chickpea (Cicer arietinum L.) genotypes to chilling stress at reproductive phase

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