E-ISSN 2090-0503 | ISSN 1687-7497
 

Original Research 


ROLE OF NON-ENZYMATIC ANTIOXIDANTS IN MAIZE LEAVES (Zea mays L.) EXPOSED TO HEAT STRESS

Eazaz Mohamed Mostafa Ahmed Ahmed Sorour.

Abstract
Exposure of Zea mays L. plants to unfavorable temperature (45C) for 1-3 h caused reduction in chlorophyll content, photosystem II activity, total available carbohydrates (TAC) and total proteins (TP) in the leaves of the plant. During the heat stress (HS) and recovery period, there was a significant increase in chl.a/chl.b and carot/chl.a+b ratios that may shift off the photooxidation process. Also, the increase of invertase hydrolyzate sugares (IHS) and total phenolic components play an important acclimative role as ROS scavengers and osmoprotectant agents. Furthermore, the decline of oxidative potentials (ASA/DHASA) and (GSH/TG) indicate the stimulation of ascorbate-glutathione cycle for reduction HS-induced oxidative stress. Expression of new polypeptides (including HSP100, HSP90 and small HSPs families) under HS could be considered as a defense mechanism. These results may indicate that different non-enzymatic antioxidants systems are developed in Zea leaf cells in response to heat stress (HS).

Key words: Non-Enzymatic Antioxidants, Zea mays L. Leaves, Heat Stress


 
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Pubmed Style

Eazaz Mohamed Mostafa Ahmed Ahmed Sorour. ROLE OF NON-ENZYMATIC ANTIOXIDANTS IN MAIZE LEAVES (Zea mays L.) EXPOSED TO HEAT STRESS. Egypt. J. Exp. Biol. (Bot.). 2014; 10(1): 97-106.


Web Style

Eazaz Mohamed Mostafa Ahmed Ahmed Sorour. ROLE OF NON-ENZYMATIC ANTIOXIDANTS IN MAIZE LEAVES (Zea mays L.) EXPOSED TO HEAT STRESS. http://www.egyseb.net//?mno=186618 [Access: November 04, 2020].


AMA (American Medical Association) Style

Eazaz Mohamed Mostafa Ahmed Ahmed Sorour. ROLE OF NON-ENZYMATIC ANTIOXIDANTS IN MAIZE LEAVES (Zea mays L.) EXPOSED TO HEAT STRESS. Egypt. J. Exp. Biol. (Bot.). 2014; 10(1): 97-106.



Vancouver/ICMJE Style

Eazaz Mohamed Mostafa Ahmed Ahmed Sorour. ROLE OF NON-ENZYMATIC ANTIOXIDANTS IN MAIZE LEAVES (Zea mays L.) EXPOSED TO HEAT STRESS. Egypt. J. Exp. Biol. (Bot.). (2014), [cited November 04, 2020]; 10(1): 97-106.



Harvard Style

Eazaz Mohamed Mostafa Ahmed Ahmed Sorour (2014) ROLE OF NON-ENZYMATIC ANTIOXIDANTS IN MAIZE LEAVES (Zea mays L.) EXPOSED TO HEAT STRESS. Egypt. J. Exp. Biol. (Bot.), 10 (1), 97-106.



Turabian Style

Eazaz Mohamed Mostafa Ahmed Ahmed Sorour. 2014. ROLE OF NON-ENZYMATIC ANTIOXIDANTS IN MAIZE LEAVES (Zea mays L.) EXPOSED TO HEAT STRESS. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 10 (1), 97-106.



Chicago Style

Eazaz Mohamed Mostafa Ahmed Ahmed Sorour. "ROLE OF NON-ENZYMATIC ANTIOXIDANTS IN MAIZE LEAVES (Zea mays L.) EXPOSED TO HEAT STRESS." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 10 (2014), 97-106.



MLA (The Modern Language Association) Style

Eazaz Mohamed Mostafa Ahmed Ahmed Sorour. "ROLE OF NON-ENZYMATIC ANTIOXIDANTS IN MAIZE LEAVES (Zea mays L.) EXPOSED TO HEAT STRESS." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 10.1 (2014), 97-106. Print.



APA (American Psychological Association) Style

Eazaz Mohamed Mostafa Ahmed Ahmed Sorour (2014) ROLE OF NON-ENZYMATIC ANTIOXIDANTS IN MAIZE LEAVES (Zea mays L.) EXPOSED TO HEAT STRESS. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 10 (1), 97-106.