Effects of different levels of water stress on leaf photosynthetic characteristics and antioxidant enzyme activities of greenhouse tomato

We compared the enzymatic antioxidative defence mechanisms of some regional subspecies of Allium (A. cepa L., A. ascalonicum auct. hort., A. sativum L.) cultivated mainly in the western regions of Romania, and two modern Hungarian climate resistant F 1 hybrids. The variability in the activities of antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), glutathione reductase (GR) and glutathione S-transferase (GST) and their changes under soil moisture stress were investigated. 1-week-long water stress revealed that among three Allium species, relative water content decreased only in A. ascalonicum leaves (up to 16%). Unlike root enzymes, the activities of the shoot enzymes, especially POD, GR and GST showed a stronger correlation with the water content of the leaves after one week of water withdrawal; regression coefficients (R2) were 0.359, 0.518 and 0.279, respectively. The ancient populations with elevated (or highly inducible) antioxidant enzyme activities may be interesting for further research and for breeding of new Allium varieties.

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Effects of soil drought stress on photosynthetic characteristics and antioxidant enzyme activities inHippophae rhamnoidesLinn. seedings

Acta Ecologica Sinica ◽

10.5846/stxb201209281358 ◽

2013 ◽

Vol 33 (5) ◽

pp. 1386-1396 ◽

Cited By ~ 3

Author(s):

裴斌 PEI Bin ◽

张光灿 ZHANG Guangcan ◽

张淑勇 ZHANG Shuyong ◽

吴芹 WU Qin ◽

徐志强 XU Zhiqiang ◽

...

Keyword(s):

Drought Stress ◽

Antioxidant Enzyme ◽

Enzyme Activities ◽

Photosynthetic Characteristics ◽

Soil Drought ◽

Antioxidant Enzyme Activities

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Responses of pomegranate cultivars to severe water stress and recovery: changes on antioxidant enzyme activities, gene expression patterns and water stress responsive metabolites

Physiology and Molecular Biology of Plants ◽

10.1007/s12298-017-0435-x ◽

2017 ◽

Vol 23 (2) ◽

pp. 321-330 ◽

Cited By ~ 9

Author(s):

Mohammadreza Pourghayoumi ◽

Majid Rahemi ◽

Davood Bakhshi ◽

Ali Aalami ◽

Ali Akbar Kamgar-Haghighi

Keyword(s):

Gene Expression ◽

Water Stress ◽

Antioxidant Enzyme ◽

Enzyme Activities ◽

Expression Patterns ◽

Gene Expression Patterns ◽

Antioxidant Enzyme Activities ◽

Severe Water Stress

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Drought Tolerance of Soybean (Glycine max L. Merr.) by Improved Photosynthetic Characteristics and an Efficient Antioxidant Enzyme Activities Under a Split-Root System

Frontiers in Physiology ◽

10.3389/fphys.2019.00786 ◽

2019 ◽

Vol 10 ◽

Cited By ~ 20

Author(s):

Nasir Iqbal ◽

Sajad Hussain ◽

Muhammad Ali Raza ◽

Cai-Qiong Yang ◽

Muhammad Ehsan Safdar ◽

...

Keyword(s):

Glycine Max ◽

Drought Tolerance ◽

Root System ◽

Antioxidant Enzyme ◽

Enzyme Activities ◽

Photosynthetic Characteristics ◽

Antioxidant Enzyme Activities ◽

Split Root ◽

Split Root System ◽

Glycine Max L

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

New Forests ◽

10.1007/s11056-009-9167-2 ◽

2009 ◽

Vol 39 (2) ◽

pp. 231-243 ◽

Cited By ~ 14

Author(s):

Y. Yang ◽

Q. Liu ◽

G. X. Wang ◽

X. D. Wang ◽

J. Y. Guo

Keyword(s):

Water Stress ◽

Antioxidant Enzyme ◽

Osmotic Adjustment ◽

Enzyme Activities ◽

Antioxidant Enzyme Activities ◽

Picea Asperata

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Effect of Super Absorbent Application on Antioxidant Enzyme Activities in Canola ( Brassica napus L.) Cultivars under Water Stress Conditions

American Journal of Agricultural and Biological Sciences ◽

10.3844/ajabssp.2009.215.223 ◽

2009 ◽

Vol 4 (3) ◽

pp. 215-223 ◽

Cited By ~ 19

Author(s):

Shirani-R

Keyword(s):

Water Stress ◽

Brassica Napus ◽

Antioxidant Enzyme ◽

Enzyme Activities ◽

Stress Conditions ◽

Antioxidant Enzyme Activities ◽

Brassica Napus L

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Effect of hydric and light stress on biomass, nutrient uptake and enzymatic antioxidants of Argania spinosa seedlings

Archives of Biological Sciences ◽

10.2298/abs201220010h ◽

2021 ◽

pp. 10-10

Author(s):

Abdouroihamane Hachemi ◽

Ouswati Said Ali ◽

Tarik Belghazi ◽

Abderrahman Lahrouni ◽

Said El Mercht ◽

...

Keyword(s):

Water Stress ◽

Antioxidant Enzyme ◽

Enzyme Activities ◽

Light Stress ◽

Phosphorus Uptake ◽

Interactive Effects ◽

Antioxidant Enzyme Activities ◽

Total Biomass ◽

Enzymatic Antioxidants ◽

Argania Spinosa

Sunlight and water are factors that affect seedling development. However, the effects of acclimatization of seedlings to sunlight and water stress remain poorly understood. This study aimed to examine the interactive effects of acclimatization to light and water stress on argan tree (Argania spinosa) seedlings in nurseries. An experiment was conducted with 504 seedlings using two sunlight treatments (L1 and L2, i.e. 100% and 60% of full sunlight, respectively), and three watering treatments (well-watered, moderate stress and severe stress, i.e. 100%, 50% and 25% of field capacity, respectively). According to our results, water stress treatments caused a reduction in total biomass accumulation, nitrogen and phosphorus uptake. Water stress significantly increased other macroelements, H2O2 and MDA levels and antioxidant enzyme activities compared to well-watered seedlings. Seedlings grown under moderate shade (L2) showed higher macroelement uptake, which probably contributed to the increase in total biomass in all water treatments. The highest membrane stability index (MSI) values, H2O2 and MDA levels and lowest antioxidant enzyme activities were recorded in acclimatized argan seedlings under moderate shading (L2). These results suggest that moderate shade can effectively prevent stress caused by light excess and can also mitigate the harmful effects of water stress on A. spinosa seedlings.

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