Salt tolerance in aquatic macrophytes: possible involvement of the antioxidative enzymes

Rout, N.P.; Shaw, Birendra Prasad

doi:10.1016/s0168-9452(00)00406-4

Cited by 198 publications

(135 citation statements)

References 22 publications

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“…They control the level of ROS and eliminate their detrimental effects. SOD transforms O − 2 to H 2 O 2 by acting as the first line of defence against ROS and H 2 O 2 also is scavenged by CAT and POX to water (Rout and Shaw 2001). The present findings showed that SOD activity decreased in cold-tolerant barley and increased in cold-sensitive barley by the cold treatment at all the days (10, 17, 24 and 31) as compared to respective controls ( Figure 3).…”

Section: Effects Of Cold and Sa + Cold On Antioxidant Enzyme Activitiessupporting

confidence: 57%

“…Antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) have a main role in scavenging of the ROS. During cold stress in plants, the levels of decreased ROS have a critical role for living cells because ROS seriously disrupt normal metabolism through oxidative damage in the absence of any protective mechanism (Rout and Shaw 2001). Researches for signal molecules mediating plant stress response are an important step in our better understanding of how plants acclimatize to their adverse environments.…”

Section: Introductionmentioning

confidence: 99%

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Exogenous salicylic acid alleviates cold damage by regulating antioxidative system in two barley (Hordeum vulgareL.) cultivars

Mutlu

Atıcı

Nalbantoğlu

et al. 2016

Frontiers in Life Science

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In this work, the time-dependent effect of exogenous salicylic acid (SA) applied before cold stress was investigated on the regulation of antioxidative respond mechanisms in two barley (Hordeum vulgare L.) cultivars (Akhisar and Tokak) differed in cold tolerance. SA (0.1 mM) was applied to 7-days old barley seedlings growing under control conditions (20/18°C). After this application, the seedlings were transferred to cold conditions (7/5°C) at different times (7, 14, 21 and 28 days) for 3 days. Then, the contents of malondialdehyde (MDA), hydrogen peroxide (H 2 O 2 ) and the activities of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) were determined in the leaves (control, cold and SA + cold) from the seedlings harvested at 10, 17, 24 and 31 days. Moreover, the effect of cold stress was evaluated on the endogenous SA level at the both cultivars by comparing to control plants. The MDA content increased in the cold treatment while it decreased in the SA treatment at all the days studied at the both cultivars. The SA + cold treatment could have a variable effect on H 2 O 2 content at the tolerant barley (Tokak) while decreased its content at the sensitive cultivar (Akhisar). The SA + cold treatment could increase the activities of POX and SOD at both cultivars, but it increased the CAT activity at the tolerant cultivar while decreased at the sensitive cultivar. In addition, the content of endogenous SA was decreased by cold stress at all the days studied at the barley cultivars as compared to control plants. The results show that the SA treatment could be effective on the regulation of the parameters studied at cold conditions until 31 days after SA application, and the importance of exogenous SA treatment before cold stress. It was concluded that exogenous and endogenous SA could play an ameliorating role on cold tolerance by regulating reactive oxygen species and the activities of antioxidative enzymes in both cold-sensitive and cold-tolerant cultivars of barley. ARTICLE HISTORY

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Section: Effects Of Cold and Sa + Cold On Antioxidant Enzyme Activitiessupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Exogenous salicylic acid alleviates cold damage by regulating antioxidative system in two barley (Hordeum vulgareL.) cultivars

Mutlu

Atıcı

Nalbantoğlu

et al. 2016

Frontiers in Life Science

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“…The intensity and direction of the antioxidative response to Cd appeared to be dependent on the plant species, tissue analyzed, metal identity (Rout and Shaw, 2001), duration of metal exposure (Hegedus et al, 2001) and stage of plant development (Rout and Shaw, 2001). The explanation for such antioxidative enzyme activity reductions is not fully known yet.…”

Section: Resultsmentioning

confidence: 99%

Cadmium-induced oxidative stress and antioxidative enzyme response in water hyacinth and salvinia

Vestena¹,

Cambraia²,

Ribeiro³

et al. 2011

Braz. J. Plant Physiol.

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The reactive oxygen species generation, lipid peroxidation and antioxidative enzyme response of water hyacinth and salvinia to Cd were evaluated. Cadmium was absorbed/accumulated mainly in the roots, but significant amounts also translocated to the leaves. No Cd effect on dry weight was detected, although toxicity symptoms were visible. Superoxide and H 2 O 2 concentrations increased, in addition to lipid peroxidation in both species, especially in the leaves of salvinia. In general, antioxidative enzyme activities were reduced in both species following Cd treatment, especially in salvinia. Glutathione peroxidase (GPX, EC 1.11.1.9) activity decreased in water hyacinth but increased in salvinia. Glutathione S-transferase (GST, EC 2.5.1.18) activity increased in the leaves but decreased in the roots of both species. So, Cd induced ROS generation/accumulation, but the antioxidative enzymes were not able to combat the Cd-induced oxidative injury in these two species. Nevertheless, water hyacinth consistently showed a higher tolerance to Cd than salvinia.

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“…Tiron (1,2-dihydroxybenzene-3,5-disulfonate), a scavenger of O 2 - (Sakaki et al, 1983), sodium L-ascorbate (AsA), a scavenger of H 2 O 2 and other active oxygen species (Noctor and Foyer, 1998), DABCO (1,4-diazabicyclo-[2,2,2]-octane), a scavenger of 1 O 2 (Rout and Shaw, 2001) and benzoate, a scavenger of OH (Luna et al, 1994), were used as antioxidants.…”

Section: Antioxidantsmentioning

confidence: 99%

Pretreatment with Antioxidants Decreases the Effects of Salt Stress on Chloroplast Ultrastructure in Rice Leaf Segments (Oryza sativaL.)

Yamane

Rahman

Kawasaki

et al. 2004

Plant Production Science

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Salt tolerance in aquatic macrophytes: possible involvement of the antioxidative enzymes

Cited by 198 publications

References 22 publications

Exogenous salicylic acid alleviates cold damage by regulating antioxidative system in two barley (Hordeum vulgareL.) cultivars

Exogenous salicylic acid alleviates cold damage by regulating antioxidative system in two barley (Hordeum vulgareL.) cultivars

Cadmium-induced oxidative stress and antioxidative enzyme response in water hyacinth and salvinia

Pretreatment with Antioxidants Decreases the Effects of Salt Stress on Chloroplast Ultrastructure in Rice Leaf Segments (Oryza sativaL.)

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