The effect of foliar application of zinc oxide nanoparticles and Moringa oleifera leaf extract on growth, biochemical parameters and in promoting salt stress tolerance in faba bean
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Date
2022
Authors
Ragab, Sherif M.
Turoop, Losenge
Runo, Steven
Nyanjom, Steven
Journal Title
Journal ISSN
Volume Title
Publisher
AJ
Abstract
Salinity is major abiotic stress limiting plant growth worldwide. Plant adaptation to salinity stress
involves diverse physiological and metabolic pathways. In this study, we assessed the effects of foliar
application of zinc oxide nanoparticles (ZnONPs) and Moringa leaf extract (MLE) on salt tolerance in
faba beans (cultivar, Sakha 4). Morphological, chemical, and biochemical parameters of plants grown
under saline condition (50 and 100 mM NaCl) were assessed 60 days after sowing. Salt stress caused a
remarkable reduction in growth traits, photosynthetic pigments, proline, minerals, total phenol, and
enzyme activity of the faba bean variety. The results showed that foliar spraying of MLE and ZnONPs on
faba bean grown under salt-stressed conditions promoted growth parameters (that is, shoot length,
numbers of leaves, relative water content, shoot, roots fresh and dry weights), photosynthetic pigments
(that is, chl a, b, total chlorophyll and carotenoids), proline, mineral elements (Na+
, K+
, Ca+2
, and Zn+2),
total phenol and enzyme activity (POX, PPO, APX, and CAT) compared to control plants. Based on
these findings, the potential of foliar spraying application of MLE and ZnONPs may help alleviate the
negative effect of salinity on growth, photosynthesis efficiency, and biochemical properties of faba
bean.
Description
Article
Keywords
Faba bean, Moringa oleifera, antioxidant enzyme activity, ZnO nanoparticles, salt stress, proline
Citation
Ragab, S. M., Turoop, L., Runo, S., & Nyanjom, S. (2022). The effect of foliar application of zinc oxide nanoparticles and Moringa oleifera leaf extract on growth, biochemical parameters and in promoting salt stress tolerance in faba bean. African Journal of Biotechnology, 21(6), 252-266.