Studies on some biochemical changes and ion regulation in some tomato genotypes exposed to drought stress

Kıran, Sevinç; Kuşvuran, Şebnem; Talhounı, M.; Sönmez, Kenan; Ellialtıoğlu, Şeküre Şebnem; Özkay, Fatma

doi:10.17660/actahortic.2016.1142.56

Cited by 3 publications

(5 citation statements)

References 14 publications

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“…Genotype P21 has an increased activity of SOD at the later stage to counter the deleterious effects of superoxide radicals released from the significant increase in lipid peroxidation content at the early stage. A similar occurrence has been recorded in other crops; Oilseed Rape (Brassica napus) [30]; and tomato seedlings [31] that reacted with increased lipid peroxidation content and increased their SOD activities as an enzymatic defense system against droughtinduced oxidative stress. Despite the increase in lipid peroxidation content of genotype P19, SOD activities decreased under drought conditions.…”

Section: Biochemical Analysis Of Drought Tolerance Genotypessupporting

confidence: 80%

Physio-Chemical Properties Responses of Six Fonio Genotypes (Digitaria exilis and D. iburua) Subjected to Drought Stress Conditions

Osundinakin

Ogunkanmi

Onuminya

et al. 2023

Advanced Research in Life Sciences

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The cultivation of fonio in the Western Africa has been greatly hindered by the low amount of rainfall. Crop failure due to drought has been widely reported in Nigeria, which has led to research on different crops with paucity of information on fonio. The present study evaluated six drought genotypes of fonio to determine their physiological and biochemical responses under drought stress conditions. Fonio seeds were planted for a period of 3 weeks and subjected to drought. WUE decreased under drought stress particularly in the P21 genotype, while the RSR significantly increased for all evaluated genotypes. Drought stress seems to enhance the lipid peroxidation and free amino acid activities in the 6 evaluated genotypes, whereas it reduced the proline activities in 4 out of the 6 genotypes. At the early and the late stage, the highest lipid peroxidation was recorded in P25 and P21 respectively. The SOD activities varied at the early and the late stage under drought stress conditions, particularly for the P25, which showed higher level of SOD activities (= 10 folds higher than the control group at the late stage). The activities of CAT and GR for all genotypes studied were not affected by these stressful conditions. However, the APX activity was preferentially reduced in some genotypes, while the remaining ones were unchanged. In conclusion, difference in the physiochemical responses to drought reflects the differences in the ability of the genotypes to withstand varying degrees of drought. The increase in SOD activities might be a frontline defence to counter the increase observed in lipid peroxidation content caused by the reduction in CAT activities under droughtconditionsn.

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Section: Biochemical Analysis Of Drought Tolerance Genotypessupporting

confidence: 80%

Physio-Chemical Properties Responses of Six Fonio Genotypes (Digitaria exilis and D. iburua) Subjected to Drought Stress Conditions

Osundinakin

Ogunkanmi

Onuminya

et al. 2023

Advanced Research in Life Sciences

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show abstract

“…Authors indicated that SOD, CAT, GR and APX enzyme activities have increased in drought stress conditions. On the other hand, in the susceptible varieties (TR-63233 and H-2274) compared to the control plants in terms of the parameters studied enzyme activities decreased to varying degrees [60].…”

Section: Drought Stressmentioning

confidence: 85%

“…The results demonstrate the selection of tolerant genotypes for oxidative stress such as drought; salinity could be used for in vitro methods [59]. Drought tolerance of tomato genotypes [60] was investigated and found biochemical changes (drought stress index, MDA content and antioxidant enzyme activities) that occur as a result of stress in plants were investigated. In salt-tolerant varieties, T-1 and T-2, the decrease of ions occurred at lower levels under drought conditions.…”

Section: Drought Stressmentioning

confidence: 99%

“…In general, it also drought-tolerant melon genotypes found to be tolerant groups, respectively. In particular, these melon varieties have enhanced levels of antioxidant enzyme activities by activating the tolerant concluded [62]. Kiran et al [60] investigated that determination of tolerance levels to drought of tomato genotypes (TR-68516, Rio Grande, TR-63233, TR-63233 and H-2274).…”

Section: Drought Stressmentioning

confidence: 99%

“…In particular, these melon varieties have enhanced levels of antioxidant enzyme activities by activating the tolerant concluded [62]. Kiran et al [60] investigated that determination of tolerance levels to drought of tomato genotypes (TR-68516, Rio Grande, TR-63233, TR-63233 and H-2274). Authors indicated that SOD, CAT, GR and APX enzyme activities have increased in drought stress conditions.…”

Section: Drought Stressmentioning

confidence: 99%

See 2 more Smart Citations

Antioxidant Enzyme Activities and Abiotic Stress Tolerance Relationship in Vegetable Crops

Kuşvuran¹,

Kıran²,

Ellialtıoğlu³

2016

Abiotic and Biotic Stress in Plants - Recent Advances and Future Perspectives

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Climatic changes can cause serious reductions in yield and crop quality. Under the threat of climatic changes, one of the precautions to cope is selection and development of resistant vegetable genotypes to abiotic stresses. Several physiological and biochemical reactions and different tolerance levels can occur according to plant species. When plants are subjected to environmental stresses such as salinity, drought, temperature extremes, herbicide treatment and mineral deficiency, the balance between the production of reactive oxygen species ROS and the quenching activity of antioxidants is upset, often resulting in oxidative damage. Since activated oxygen species can disrupt normal metabolism through oxidative damage to lipids, protein and nucleic acids, plants possess a number of antioxidant enzymes that protect them from these cytotoxic effects. To control the level of ROS and to protect cells under stress conditions, plant tissues contain several enzymes for scavenging ROS. The high levels of antioxidative enzyme activities were determined in the tolerant genotypes of tomatoes, eggplant, peppers, cucumbers, melons, squash, beans, okra, etc. to several abiotic stress factors. "oth the whole plant and in vitro callus culture experiments gave similar results. "ntioxidant enzymes can be useful for screening to determine the tolerant and sensitive plant genotypes against abiotic stresses.

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Comparison of microstructure and physiological response of the leaves of six <i>Rosa rugosa</i> genotypes under drought stress

Li,

Zhu,

et al. 2024

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Studies on some biochemical changes and ion regulation in some tomato genotypes exposed to drought stress

Cited by 3 publications

References 14 publications

Physio-Chemical Properties Responses of Six Fonio Genotypes (Digitaria exilis and D. iburua) Subjected to Drought Stress Conditions

Physio-Chemical Properties Responses of Six Fonio Genotypes (Digitaria exilis and D. iburua) Subjected to Drought Stress Conditions

Antioxidant Enzyme Activities and Abiotic Stress Tolerance Relationship in Vegetable Crops

Comparison of microstructure and physiological response of the leaves of six <i>Rosa rugosa</i> genotypes under drought stress

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