ISSN: 0973-7510

E-ISSN: 2581-690X

Open Access
Amani Abdel-Latif1, Reem Badr1, Injy Hassan1 and Gamal Osman2,3
1Department of Botany and Microbiology, faculty of science, Alexandria University, Egypt.
2Department of Biology, Umm Al-Qura University, Makkah, KSA.
3Department of Microbial Genetics, Agricultural Genetic Engineering Research Institute (AGERI), Giza, Egypt.
J Pure Appl Microbiol. 2018;12(2):611-622 | © The Author(s). 2018
Received: 07/03/2018 | Accepted: 30/04/2018 | Published: 30/06/2018

The present study aimed to investigate the biological effects of different concentrations of Ulva lactuca aqueous extract (ULAE) on the growth parameters and biochemical characteristics of Zea mays. The ULAE was applied by foliar spray or directly added to the growth medium of maize plant cultivated in hydroponic system. The growth parameters (shoot length, root length, fresh weight, dry weight and seedling length), minerals, biochemical constituents (chlorophyll content, the activity of ribulose bisphosphate carboxylase (Rubisco), and the detection of Rubisco activase (rca1) gene in seedlings of Zea mays hybrid line (M10) were determined. ULAE was characterized by high abundance of calcium (3255.86 ppm) followed by potassium (287.9 ppm). Among the different treatments, 0.5% and 1% concentration of ULAE as foliar spray exhibited significant effects on growth parameters and biochemical constitutions of the Zea mays seedlings. However, at the higher concentration of ULAE (5%), inhibitory effects were observed. Moreover, as a foliar spray, ULAE at 0.5% and 1% concentration showed a significant effect on seedling length.


Ulva lactuca; Rubisco; Photosynthetic Pigments; RCA1

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© The Author(s) 2018. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.