Multivariate investigation of Moringa oleifera morpho-physiological and biochemical traits under various water regimes

The climatic changes crossing the world menace the green life through limitation of water availability. The goal of this study was to determine whether Moringa oleifera Lam. trees cultivated under Tunisian arid climate, retain their tolerance ability to tolerate accentuated environmental stress fact...

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Published in:	BMC plant biology Vol. 24; no. 1; pp. 505 - 16
Main Authors:	Hajaji, Afef N, Heikal, Yasmin M, Hamouda, Ragaa A E F, Abassi, Mejda, Ammari, Youssef
Format:	Journal Article
Language:	English
Published:	England BioMed Central Ltd 06-06-2024 BioMed Central BMC
Subjects:	Abiotic stress Amino acids Antioxidants Antioxidants - metabolism Arid climates Aridity Ascorbic acid Biological research Biology, Experimental Catalase Chlorophyll Climate change Climatic changes Dietary minerals Drought Drought-resistant tree Droughts Environmental conditions Environmental stress Enzymes Experiments Field capacity Fluorescence recovery after photobleaching Germination Glutathione Glutathione peroxidase Glutathione reductase Hardiness Hydrogen peroxide Investigations Iron compounds L-Ascorbate peroxidase Leaves Metabolites Moringa oleifera Moringa oleifera - metabolism Moringa oleifera - physiology Morpho-physiological parameters Multivariate Analysis Osmoregulation Oxidative stress Peroxidase Peroxides Phenolic compounds Phenols Physiological aspects Physiology Plant physiological ecology Plant-water relationships Plants Reactive oxygen species Reactive Oxygen Species - metabolism Reductases Salinity Scavenging Seeds Stress, Physiological Superoxide Superoxide dismutase Trees Tunisia Water Water - metabolism Water availability Water regimes Tunisia United States > US Osmoregulation Morpho-physiological parameters Oxidative stress Drought-resistant tree Field capacity
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Summary:	The climatic changes crossing the world menace the green life through limitation of water availability. The goal of this study was to determine whether Moringa oleifera Lam. trees cultivated under Tunisian arid climate, retain their tolerance ability to tolerate accentuated environmental stress factors such as drought and salinity. For this reason, the seeds of M. oleifera tree planted in Bouhedma Park (Tunisian arid area), were collected, germinated, and grown in the research area at the National Institute of Research in Rural Engineering, Waters and Forests (INRGREF) of Tunis (Tunisia). The three years aged trees were exposed to four water-holding capacities (25, 50, 75, and 100%) for 60 days to realise this work. Growth change was traduced by the reduction of several biometric parameters and fluorescence (Fv/Fm) under severe water restriction (25 and 50%). Whereas roots presented miraculous development in length face to the decrease of water availability (25 and 50%) in their rhizospheres. The sensitivity to drought-induced membrane damage (Malondialdehyde (MDA) content) and reactive oxygen species (ROS) liberation (hydrogen peroxide (H O ) content) was highly correlated with ROS antiradical scavenging (ferric reducing antioxidant power (FRAP) and (2, 2'-diphenyl-1-picrylhydrazyle (DPPH)), phenolic components and osmolytes accumulation. The drought stress tolerance of M. oleifera trees was associated with a dramatic stimulation of superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), ascorbate peroxidase (APX), and glutathione peroxidase (GPX) activities. Based on the several strategies adopted, integrated M. oleifera can grow under drought stress as accentuated adverse environmental condition imposed by climate change.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1471-2229 1471-2229
DOI:	10.1186/s12870-024-05040-5