Protective Antioxidant Enzyme Activities are Affected by Drought in Quinoa (Chenopodium Quinoa Willd)

Rachid Fghire; Oudou Issa Ali; Fatima Anaya; Ouafae Benlhabib; Sven-Erik Jacobsen; Said Wahbi

Protective Antioxidant Enzyme Activities are Affected by Drought in Quinoa (Chenopodium Quinoa Willd)

Rachid Fghire, Oudou Issa Ali, Fatima Anaya, Ouafae Benlhabib, Sven-Erik Jacobsen, Said Wahbi

Section for Crop Sciences

Abstract

Changes in water availability are responsible for a variety of biochemical stress responses in plant organisms. Stress induced by this factor may be associated with enhanced reactive oxygen species (ROS) generations, which cause oxidative damage. In the present study we investigated the activities of antioxidant enzymes superoxide dismutase (SOD), polyphenoloxydase (PPO), peroxidase (POD) and catalase (CAT), measured at flowering in quinoa, subjected to varying levels of drought stress. Drought levels were 100, 50 and 33% of evapotranspiration (ETc), and rainfed. Compared to full water supply (100%ETc), the activities of SOD under dry conditions (33%ETc) increased significantly by 39 and 90%, in 2011 and 2012, respectively. Under rainfed conditions, the activities of SOD increased by 178.71 and 322.42 %. The CAT activity in rainfed treatment increased significantly by 103.15% (2011) and 87.4% (2012) compared to the full water supply treatment. Compared to the control, POD activity in both essays increased significantly by 50.2% in 33%ETc of 2012 assay and increased by 72.8 and 115.6% in the rainfed treatment of 2011 and 2012 assays respectively. In comparison to the full watered treatment, the PPO activity increased in all treatments. These results suggest that antioxidant enzymes play important roles in reducing oxidative stress in quinoa plant exposed to drought stress.

Original language	English
Journal	Journal of Biology, Agriculture and Healthcare
Volume	3
Issue number	4
Pages (from-to)	62-68
Number of pages	7
ISSN	2224-3208
Publication status	Published - 2013

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Cite this

@article{5c41ecaaaaef487d984633bd49939618,

title = "Protective Antioxidant Enzyme Activities are Affected by Drought in Quinoa (Chenopodium Quinoa Willd)",

abstract = "Changes in water availability are responsible for a variety of biochemical stress responses in plant organisms. Stress induced by this factor may be associated with enhanced reactive oxygen species (ROS) generations, which cause oxidative damage. In the present study we investigated the activities of antioxidant enzymes superoxide dismutase (SOD), polyphenoloxydase (PPO), peroxidase (POD) and catalase (CAT), measured at flowering in quinoa, subjected to varying levels of drought stress. Drought levels were 100, 50 and 33% of evapotranspiration (ETc), and rainfed. Compared to full water supply (100%ETc), the activities of SOD under dry conditions (33%ETc) increased significantly by 39 and 90%, in 2011 and 2012, respectively. Under rainfed conditions, the activities of SOD increased by 178.71 and 322.42 %. The CAT activity in rainfed treatment increased significantly by 103.15% (2011) and 87.4% (2012) compared to the full water supply treatment. Compared to the control, POD activity in both essays increased significantly by 50.2% in 33%ETc of 2012 assay and increased by 72.8 and 115.6% in the rainfed treatment of 2011 and 2012 assays respectively. In comparison to the full watered treatment, the PPO activity increased in all treatments. These results suggest that antioxidant enzymes play important roles in reducing oxidative stress in quinoa plant exposed to drought stress.",

author = "Rachid Fghire and Ali, {Oudou Issa} and Fatima Anaya and Ouafae Benlhabib and Sven-Erik Jacobsen and Said Wahbi",

year = "2013",

language = "English",

volume = "3",

pages = "62--68",

journal = "Journal of Biology, Agriculture and Healthcare",

issn = "2224-3208",

number = "4",

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TY - JOUR

T1 - Protective Antioxidant Enzyme Activities are Affected by Drought in Quinoa (Chenopodium Quinoa Willd)

AU - Fghire, Rachid

AU - Ali, Oudou Issa

AU - Anaya, Fatima

AU - Benlhabib, Ouafae

AU - Jacobsen, Sven-Erik

AU - Wahbi, Said

PY - 2013

Y1 - 2013

N2 - Changes in water availability are responsible for a variety of biochemical stress responses in plant organisms. Stress induced by this factor may be associated with enhanced reactive oxygen species (ROS) generations, which cause oxidative damage. In the present study we investigated the activities of antioxidant enzymes superoxide dismutase (SOD), polyphenoloxydase (PPO), peroxidase (POD) and catalase (CAT), measured at flowering in quinoa, subjected to varying levels of drought stress. Drought levels were 100, 50 and 33% of evapotranspiration (ETc), and rainfed. Compared to full water supply (100%ETc), the activities of SOD under dry conditions (33%ETc) increased significantly by 39 and 90%, in 2011 and 2012, respectively. Under rainfed conditions, the activities of SOD increased by 178.71 and 322.42 %. The CAT activity in rainfed treatment increased significantly by 103.15% (2011) and 87.4% (2012) compared to the full water supply treatment. Compared to the control, POD activity in both essays increased significantly by 50.2% in 33%ETc of 2012 assay and increased by 72.8 and 115.6% in the rainfed treatment of 2011 and 2012 assays respectively. In comparison to the full watered treatment, the PPO activity increased in all treatments. These results suggest that antioxidant enzymes play important roles in reducing oxidative stress in quinoa plant exposed to drought stress.

AB - Changes in water availability are responsible for a variety of biochemical stress responses in plant organisms. Stress induced by this factor may be associated with enhanced reactive oxygen species (ROS) generations, which cause oxidative damage. In the present study we investigated the activities of antioxidant enzymes superoxide dismutase (SOD), polyphenoloxydase (PPO), peroxidase (POD) and catalase (CAT), measured at flowering in quinoa, subjected to varying levels of drought stress. Drought levels were 100, 50 and 33% of evapotranspiration (ETc), and rainfed. Compared to full water supply (100%ETc), the activities of SOD under dry conditions (33%ETc) increased significantly by 39 and 90%, in 2011 and 2012, respectively. Under rainfed conditions, the activities of SOD increased by 178.71 and 322.42 %. The CAT activity in rainfed treatment increased significantly by 103.15% (2011) and 87.4% (2012) compared to the full water supply treatment. Compared to the control, POD activity in both essays increased significantly by 50.2% in 33%ETc of 2012 assay and increased by 72.8 and 115.6% in the rainfed treatment of 2011 and 2012 assays respectively. In comparison to the full watered treatment, the PPO activity increased in all treatments. These results suggest that antioxidant enzymes play important roles in reducing oxidative stress in quinoa plant exposed to drought stress.

M3 - Journal article

SN - 2224-3208

VL - 3

SP - 62

EP - 68

JO - Journal of Biology, Agriculture and Healthcare

JF - Journal of Biology, Agriculture and Healthcare

IS - 4

ER -