Citric Acid Affects Melissa officinalis L. Essential Oil Under Saline Soil

Relationships of irrigation water and soil physical and chemical characteristics with yield, chemical composition and antimicrobial activity of Damask rose essential oil

“…Results of correlations between soil characteristics and ME contents suggested that there were strong positive correlations between ME content and soil EC and sand and gypsum contents and strong inverse correlations between its content and soil pH and silt and clay percentages. [96] confirmed that EC increased the contents of important compounds in the EO of Melissa officinalis L. These results are consistent with those of the present research. Higher EC values pose major constraints to growth, development, productivity, and crop quality in many regions of the world through disrupting plant physiological functions, but they may stimulate production and accumulation of secondary metabolites in plants [61].…”

Glutathione to ameliorate growth criterions and chemical constituents of geranium irrigated with salt water

“…Significant decreases were recorded in growth characters, essential oil yield of damsesea and mint pants due to salinity stress treatments, while opposite trend was observed in essential oil yield and essential oil main constituents [ 60 , 61 ]. Growth criterions, essential oil (%), major compounds of essential oil, total carbohydrates and proline were significantly increased under saline irrigation water treatments, but nutrients and protein contents were reduced [ 62 ].Under salt stress conditions, different decreases were recorded in growth criterions, essential oil yield, photosynthetic pigments, protein, N, P, K and Ca of geranium, pot marigold, lemon balm, black cumin, Artemisia and sunflower crops [ 13 , 39 , 53 , [63] , [64] , [65] ]; on the other antioxidant enzymes activities, essential oil (%) and its main compounds, carbohydrates, proline, sodium and chloride were increased. Different studies were carried out previously and showed the effect of salinity on growth and chemical composition of medicinal and aromatic plants.…”

“…Different studies were carried out previously and showed the effect of salinity on growth and chemical composition of medicinal and aromatic plants. Plants treated with different salinity levels gave different decreases in growth characters, essential oil yield, photosynthetic pigments, crude protein and elemental contents; on the other hand various increments were recorded in the percentage of essential oils and their major constituents, total carbohydrates, proline, Na, Cl and antioxidant enzymes activities [ [60] , [61] , [62] , [63] , [64] ]. Application of glutathione resulted in various improvements of geranium morphological and chemical characters.…”

Exogenous citric acid enhances drought tolerance in tobacco (Nicotiana tabacum)

“…2017), and also increased non‐enzymatic antioxidants (TPC and proline accumulation) in H. sabdariffa and Melissa officinalis to maintain redox balance (Ahmed et al . 2017; Abdellatif & Ibrahim, 2018). Additionally, spraying with citric acid improved tolerance to lead (Pb) stress in Larix olgensis , which was correlated with higher proline accumulation (Song et al .…”

“…Previous studies revealed that exogenous citric acid pretreatment promotes the synthesis of proline and other metabolites, including phenolic compounds, flavonoids and soluble sugars, in response to environmental stress (Kaur et al 2017;Li et al 2019). Under salt stress, a foliar spray with citric acid resulted in higher proline content and total phenolic compounds (TPC) in G. barbadense (El-Beltagi et al 2017), and also increased non-enzymatic antioxidants (TPC and proline accumulation) in H. sabdariffa and Melissa officinalis to maintain redox balance (Ahmed et al 2017;Abdellatif & Ibrahim, 2018). Additionally, spraying with citric acid improved tolerance to lead (Pb) stress in Larix olgensis, which was correlated with higher proline accumulation (Song et al 2018).…”