Physiological and Phytochemical Responses of Lemon Balm (Melissa officinalis L.) to Pluramin Application and Inoculation with Pseudomonas fluorescens PF-135 under Water-Deficit Stress

2021 ◽  
Author(s):  
H. Mohammadi ◽  
S. Saeedi ◽  
S. Hazrati ◽  
M. Brestic
Keyword(s):  
Pseudomonas Fluorescens ◽  
Water Deficit ◽  
Water Deficit Stress ◽  
Melissa Officinalis ◽  
Lemon Balm

Pseudomonas fluorescens enhances biomass yield and ajmalicine production in Catharanthus roseus under water deficit stress

2007 ◽  
Vol 60 (1) ◽  
pp. 7-11 ◽  
Author(s):  
C. Abdul Jaleel ◽  
P. Manivannan ◽  
B. Sankar ◽  
A. Kishorekumar ◽  
R. Gopi ◽  
...  
Keyword(s):  
Pseudomonas Fluorescens ◽  
Water Deficit ◽  
Catharanthus Roseus ◽  
Biomass Yield ◽  
Water Deficit Stress

scholarly journals Physiological and biochemical changes in Matricaria chamomilla induced by Pseudomonas fluorescens and water deficit stress

2018 ◽  
Vol 111 (1) ◽  
pp. 63 ◽  
Author(s):  
Hamid MOHAMMADI ◽  
Mohammad ESMAILPOUR ◽  
Samaneh GHORBI ◽  
Mehrnaz HATAMI
Keyword(s):  
Essential Oil ◽  
Pseudomonas Fluorescens ◽  
Water Deficit ◽  
Stress Condition ◽  
Growth Parameters ◽  
Dry Mass ◽  
Water Deficit Stress ◽  
Matricaria Chamomilla ◽  
Seedling Inoculation ◽  
Oil Concentration

Environmental stresses and rhizosphere microorganisms affect growth parameters and accumulation of active ingredients especially in plants with medicinal properties. The present study examined the effects of chamomile (<em>Matricaria chamomilla </em>L.) seedling inoculation with <em>Pseudomonas fluorescens</em> PF-135 strain on its growth parameters, photosynthetic pigments, proline, malondialdehyde (MDA), and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) content, and essential oil concentration at both regular watering and water deficit experiments. Based on the obtained results, water deficit stress reduced root dry mass, and flower fresh and dry mass as well. However, amount of H<sub>2</sub>O<sub>2</sub> and MDA in root and shoot tissues were considerably lower in inoculated plants compared to non-inoculated ones under both normal watering and water deficit regimes. It indicates that lipid peroxidation and production of reactive oxygen species has been diminished in inoculated plants. Also, essential oil content in inoculated plants significantly increased compared with that of non-inoculated ones under water deficit stress condition. It can be concluded that <em>P. fluorescens </em>PF-135 strain has an outstanding potential to alleviate adverse effects of water deficit on plant growth, and hence can be used as an excellent PGPR in order to boost chamomile productivity especially under water deficit stress condition.

scholarly journals Effect of water deficit on yield and quality of lemon balm (Melissa officinalis L.)

2016 ◽  
Vol 103 (4) ◽  
pp. 385-390 ◽  
Author(s):  
Péter Radácsi ◽  
Krisztina Szabó ◽  
Dóra Szabó ◽  
Eszter Trócsányi ◽  
Éva Németh-Zámbori
Keyword(s):  
Water Deficit ◽  
Melissa Officinalis ◽  
Lemon Balm ◽  
Effect Of Water ◽  
Yield And Quality

The study of important agronomic traits by multivariate analysis in winter rapeseed cultivars

2014 ◽  
Vol 1 (1) ◽  
pp. 20-24
Author(s):  
Gader Ghaffari ◽  
Farhad Baghbani ◽  
Behnam Tahmasebpour
Keyword(s):  
Water Potential ◽  
Water Deficit ◽  
Leaf Water Potential ◽  
Seed Weight ◽  
Dry Weight ◽  
Total Variance ◽  
Water Deficit Stress ◽  
The Third ◽  
High Eigenvalue ◽  
Winter Rapeseed

In order to group winter rapeseed cultivars according to evaluated traits, an experiment was conducted in the Research Greenhouse of Agriculture Faculty, University of Tabriz - IRAN. In the experiment were included 12 cultivars of winter rapeseed and 3 levels of water deficit stress. Gypsum blocks were used to monitor soil moisture. Water deficit stress was imposed from stem elongation to physiological maturity. According to the principal component analysis, five principal components were chosen with greater eigenvalue (more than 0.7) that are including 81.34% of the primeval variance of variables. The first component that explained the 48.02% of total variance had the high eigenvalue. The second component could justify about 13.64% of total variance and had positive association with leaf water potential and proline content and had negative relationship with leaf stomatal conductivity. The third, fourth and fifth components expressed around, 10.18, 4.83 and 4.68% of the total variance respectively. The third component had the high eigenvalue for plant dry weight. The fourth component put 1000-seed weight, seed yield, Silique per Plant and root dry weight against plant dry weight, chlorophyll fluorescence and leaf water potential. The fifth component had the high eigenvalue for root dry weight, root volume and 1000-seed weight.

scholarly journals Plant Extract Valorization of Melissa officinalis L. for Agroindustrial Purposes through Their Biochemical Properties and Biological Activities

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Mouna Souihi ◽  
Rayda Ben Ayed ◽  
Imen Trabelsi ◽  
Marwa Khammassi ◽  
Nadia Ben Brahim ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Biological Activities ◽  
Biochemical Properties ◽  
Major Constituent ◽  
Allelopathic Effect ◽  
Melissa Officinalis ◽  
Lemon Balm ◽  
The North ◽  
Germacrene D ◽  
Leaf Essential Oil

Lemon balm (Melissa officinalis L.) is one of the rare medicinal plants in Tunisia. It was found only in two sites in the north of Tunisia with a small number of plants. The study of germination under the NaCl and PEG effect showed that Tunisian lemon balm seeds were sensitive to saline and osmotic stress. Morphological and biochemical characterizations of Tunisian M. officinalis were performed. Results showed that the Tunisian populations presented plants with long, broad leaves and weak branching. The major constituent in leaf essential oil was germacrene-D with a percentage ranging from 29.17 to 24.6%, and the major fatty acids were polyunsaturated fatty acids, linoleic acid, ranging from 73.93 to 66.74%. The phenolic content of M. officinalis extract varied significantly among origins which could explain the high variation in antiradical scavenging activity. The evaluation of allelopathic activities showed that the extract of the lemon balm leaves presented an allelopathic effect with the majority of the tested seeds.

scholarly journals EMS Derived Wheat Mutant BIG8-1 (Triticum aestivum L.)—A New Drought Tolerant Mutant Wheat Line

2021 ◽  
Vol 22 (10) ◽  
pp. 5314
Author(s):  
Marlon-Schylor L. le Roux ◽  
Nicolas Francois V. Burger ◽  
Maré Vlok ◽  
Karl J. Kunert ◽  
Christopher A. Cullis ◽  
...  
Keyword(s):  
Amino Acids ◽  
Water Deficit ◽  
Triticum Aestivum L ◽  
Water Deficit Stress ◽  
Drought Response ◽  
Fibrous Root ◽  
Wheat Varieties ◽  
Breeding Programs ◽  
Response Characteristics ◽  
Drought Tolerant

Drought response in wheat is considered a highly complex process, since it is a multigenic trait; nevertheless, breeding programs are continuously searching for new wheat varieties with characteristics for drought tolerance. In a previous study, we demonstrated the effectiveness of a mutant known as RYNO3936 that could survive 14 days without water. In this study, we reveal another mutant known as BIG8-1 that can endure severe water deficit stress (21 days without water) with superior drought response characteristics. Phenotypically, the mutant plants had broader leaves, including a densely packed fibrous root architecture that was not visible in the WT parent plants. During mild (day 7) drought stress, the mutant could maintain its relative water content, chlorophyll content, maximum quantum yield of PSII (Fv/Fm) and stomatal conductance, with no phenotypic symptoms such as wilting or senescence despite a decrease in soil moisture content. It was only during moderate (day 14) and severe (day 21) water deficit stress that a decline in those variables was evident. Furthermore, the mutant plants also displayed a unique preservation of metabolic activity, which was confirmed by assessing the accumulation of free amino acids and increase of antioxidative enzymes (peroxidases and glutathione S-transferase). Proteome reshuffling was also observed, allowing slow degradation of essential proteins such as RuBisCO during water deficit stress. The LC-MS/MS data revealed a high abundance of proteins involved in energy and photosynthesis under well-watered conditions, particularly Serpin-Z2A and Z2B, SGT1 and Calnexin-like protein. However, after 21 days of water stress, the mutants expressed ABC transporter permeases and xylanase inhibitor protein, which are involved in the transport of amino acids and protecting cells, respectively. This study characterizes a new mutant BIG8-1 with drought-tolerant characteristics suited for breeding programs.

scholarly journals Increase maize productivity and water use efficiency through application of potassium silicate under water stress

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. A. Gomaa ◽  
Essam E. Kandil ◽  
Atef A. M. Zen El-Dein ◽  
Mamdouh E. M. Abou-Donia ◽  
Hayssam M. Ali ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Deficit ◽  
Water Use ◽  
Field Experiments ◽  
Foliar Application ◽  
Potassium Silicate ◽  
Water Deficit Stress ◽  
Maize Productivity ◽  
Use Efficiency

AbstractIn Egypt, water shortage has become a key limiting factor for agriculture. Water-deficit stress causes different morphological, physiological, and biochemical impacts on plants. Two field experiments were carried out at Etay El-Baroud Station, El-Beheira Governorate, Agriculture Research Center (ARC), Egypt, to evaluate the effect of potassium silicate (K-silicate) of maize productivity and water use efficiency (WUE). A split-plot system in the four replications was used under three irrigation intervals during the 2017 and 2018 seasons. Whereas 10, 15, and 20 days irrigation intervals were allocated in main plots, while the three foliar application treatments of K-silicate (one spray at 40 days after sowing; two sprays at 40 and 60 days; and three sprays at 40, 60, and 80 days, and a control (water spray) were distributed in the subplots. All the treatments were distributed in 4 replicates. The results indicated that irrigation every 15 days gave the highest yield in both components and quality. The highly significant of (WUE) under irrigation every 20 days. Foliar spraying of K-silicate three times resulted in the highest yield. Even under water-deficit stress, irrigation every fifteen days combined with foliar application of K-silicate three times achieved the highest values of grain yield and its components. These results show that K-silicate treatment can increase WUE and produce high grain yield requiring less irrigation.

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