Involvement of antioxidants and lipid peroxidation in the adaptation of two cool-season grasses to localized drought stress

Fu, Jinmin; Huang, Bingru

doi:10.1016/s0098-8472(00)00084-8

Cited by 552 publications

(343 citation statements)

References 36 publications

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“…In our study, PEG treatment of -0.2 MPa had no significant effect on CAT activity in GA-pretreated seeds. Previous studies also reported that CAT activity was not affected by mild drought (Fu and Huang 2001). However, CAT activity under PEG -0.6 MPa conditions showed markedly higher levels compared to the control for both GA-and distill-water-pretreat seeds (Table 2).…”

Section: Discussionmentioning

confidence: 54%

Germination, osmotic adjustment, and antioxidant enzyme activities of gibberellin-pretreated Picea asperata seeds under water stress

et al. 2009

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Germination of dragon spruce (Picea asperata Mast.) seeds pretreated with gibberellin (GA) in response to water stress and changes in the levels of osmotic adjustments as well as in activities of antioxidant enzymes were investigated. With decreasing water potential caused by increasing concentrations of PEG 6000, germination percentage and germination index decreased gradually; the decrease was especially prominent under the serious water stress from PEG -0.6 MPa. In contrast, osmotic regulation substances (free proline and soluble sugar contents), lipid peroxidation (MDA), and activities of antioxidant enzyme (ascorbate peroxidase, catalase, and peroxidase) increased markedly with decreased water potential. Similarly, the values in all parameters under -0.6 MPa PEG treatment were markedly higher than the control and -0.2 MPa PEG treatment. These results suggested that P. asperata seed germination was insensitive to water stress. In addition, seeds pretreated with GA had increased tolerance to water stress as measured by germination percentage and germination index, osmotic regulation substance, and antioxidant enzyme activities.

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Section: Discussionmentioning

confidence: 54%

Germination, osmotic adjustment, and antioxidant enzyme activities of gibberellin-pretreated Picea asperata seeds under water stress

et al. 2009

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“…CAT was shown increased under drought treatment in e.g Prunus, tomato, sesame, alfalfa or wheat (Rubio et al, 2002;Luna et al, 2004;Sofo et al, 2005;Őnayayar, 2005;Naya et al, 2007;Fazeli et al, 2007), but decreased or unchanged in sunflower, pea and some grasses (Iturbe-Ormaetxe et al, 1998;Fu and Huang, 2001). In our piece, a new CAT isozyme was induced under drought conditions, but the total CAT activity did not increase significantly under drought stress.…”

Section: Change In Anti-oxidative Isozymes' Spectrummentioning

confidence: 97%

Does a terminal drought tolerance QTL contribute to differences in ROS scavenging enzymes and photosynthetic pigments in pearl millet exposed to drought?

Kholová

Hash

Kočová

et al. 2011

Environmental and Experimental Botany

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“…Under water stress condition, photosynthesis pigments and compounds changed ( Anjum et al, 2003), apparatus damaged (Fu and Huang, 2001) and activities of enzymes in Calvin cycle also diminished, which lead to reduction in crop yield.…”

Section: Growth Responsesmentioning

confidence: 99%

Evaluation of <i>Hevea brasiliensis</i> (Latex Timber Clone: RRIM 2001 and RRIM 3001) in Relation to Different Water Stress

Mokhatar

Daud

Zamri³

2011

American Journal of Agricultural and Biological Sciences

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Problem statement: Rubber, Hevea brasiliensis, has been traditionally planted in the humid tropics, which is characterized by high rainfall throughout the year. However, due to an increase in world's demand for rubber, future planting will be established in dry areas, characterized by prevalence water stress. Utilizing limited resource, in dry areas or to use water wisely is very important. This study provides a detail evaluation of morphological and physiological responses of rubber trees at nursery stage in relation to different water stress. Approach: Two new latex timber clones from Malaysia Rubber Board (MRB), RRIM 2001 and RRIM 3001 were used in this study. Five levels of treatment were used; plants irrigated for every two days, five days, 10 days, 15days and everyday which acted as control. The experimental design used was a Completely Randomized Block Design (RCBD) with four replications. Results: Fundamental changes of plant growth and physiological responses showed that treatment with well watered for clone RRIM 2001 (T1) had higher values than other treatments. Harvest index highest in well watered (T1) with mean 20.73, while T5 were lowest with the mean 5.03. Stomata conductance showed significant difference between T6 with 0.161µmol m -2 s -1 compared to under stress treatments with 0.00 µmol m -2 s -1 . There was treatment failure to adapt to water stress at treatments withholding water for 15days followed by treatments 10days and five days. Conclusion: RRIM 2001 and RRIM 3001 clones had responded to water stress by indicating changes in morphological and physiological responses. This indicated that Hevea brasiliensis cannot withstand water stress.

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Involvement of antioxidants and lipid peroxidation in the adaptation of two cool-season grasses to localized drought stress

Cited by 552 publications

References 36 publications

Germination, osmotic adjustment, and antioxidant enzyme activities of gibberellin-pretreated Picea asperata seeds under water stress

Germination, osmotic adjustment, and antioxidant enzyme activities of gibberellin-pretreated Picea asperata seeds under water stress

Does a terminal drought tolerance QTL contribute to differences in ROS scavenging enzymes and photosynthetic pigments in pearl millet exposed to drought?

Evaluation of <i>Hevea brasiliensis</i> (Latex Timber Clone: RRIM 2001 and RRIM 3001) in Relation to Different Water Stress

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