Effect of salt stress on growth, electrolyte leakage, Na+ and K+ content in selected plant species

This study monitors the effect of salt stress induced by a NaCl solution (0 – deionized water, 50, 100, 200, 300 mmol/L) in lettuce (Lactuca sativa L. cv. Orion), New Zealand spinach (Tetragonia tetragonoides (Pall) Kuntze) and common purslane (Portulaca oleracea L. cv. Green Purslane) over the course of 50 days. The diverse reactions of these monitored species to salt stress are well apparent from the results. Lettuce proved as the most sensitive to salt stress, showing a significant reduction of dry weight, where even lower concentrations of salt affected membrane stability through increased electrolyte leakage value and an imbalance in the content of Na+ and K+, observed in the form of lower ratios of K+/Na+. In case of T. tetragonoides, lower salt concentrations positively affected growth and this species appears to particularly accumulate sodium. In case of P. oleracea no significant reduction of dry weight took place with the increasing concentration of NaCl and a naturally high content of potassium contributed to maintaining a favourable ratio of K+/Na+ even at higher salt concentrations, which is one of the prerequisites of salt-stress tolerance.

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Mitigation of Salt Stress in Lettuce (Lactuca sativa L. var. Crispa) by Seed and Foliar 24-epibrassinolide Treatments

HortScience ◽

10.21273/hortsci.47.5.631 ◽

2012 ◽

Vol 47 (5) ◽

pp. 631-636 ◽

Cited By ~ 24

Author(s):

Melek Ekinci ◽

Ertan Yildirim ◽

Atilla Dursun ◽

Metin Turan

Keyword(s):

Salt Stress ◽

Lactuca Sativa ◽

Electrolyte Leakage ◽

Mineral Content ◽

Dry Weight ◽

Nutrient Content ◽

Fresh Weight ◽

Shoot Dry Weight ◽

Negative Effect ◽

Almost All

The objective of this study was to determine the effect of 24-epibrassinolide (24-EBL) applications on growth, chlorophyll, and mineral content of lettuce (Lactuca sativa L. var. Crispa) grown under salt stress. The study was conducted in pot experiments under greenhouse conditions. Lettuce seedlings were treated with seed and foliar 24-EBL applications at different concentrations (0, 1, 2, and 3 μM). Salinity treatments were established by adding 0, 50, and 100 mm of sodium chloride (NaCl) to a base complete nutrient solution. Results showed that salt stress negatively affected the growth and mineral content of lettuce plants. However, seed and foliar applications of 24-EBL resulted in greater shoot fresh weight, shoot dry weight, root fresh weight, and root dry weight as well as higher stem diameter than the control under salt stress. Salinity treatments induced significant increases in electrolyte leakage of plant, but foliar 24-EBL application reduced leaf electrolyte leakage and has determined lower values of leaf electrolyte leakage than non-treated ones. In regard to nutrient content, it can be inferred that 24-EBL applications increased almost all nutrient content in leaves and roots of lettuce plants under salt stress. Generally, the greatest values were obtained from 3 μM 24-EBL application. Treatments of 24-EBL alleviated the negative effect of salinity on the growth of lettuce.

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Influence of different organic manures on growth, yield and mineral nutrient accumulation in lettuce (Lactuca sativa L.)

Dhaka University Journal of Biological Sciences ◽

10.3329/dujbs.v30i2.54642 ◽

2021 ◽

Vol 30 (2) ◽

pp. 159-168

Author(s):

Shabnur Chowdhury ◽

MK Rahman

Keyword(s):

Leaf Area Index ◽

Leaf Area ◽

Lactuca Sativa ◽

Dry Weight ◽

Organic Manure ◽

Leaf Number ◽

Nutrient Accumulation ◽

Area Index ◽

Organic Manures ◽

Lactuca Sativa L

Effects of organic manures on growth and yield of lettuce (Lactuca sativa L.) and nutrient accumulation in its leaves was examined. The experiment was conducted in a completely randomized design (CRD) replicated thrice with ten treatments involving nine organic manures and a control treatment. Growth parameters viz. plant height, leaf number, leaf length, leaf area, leaf area index and fresh and dry weight of leaf, stem and root were assessed. The highest height (23.69 cm), longest leaf (32.18cm), leaf area (5883.43cm2), leaf area index (6.434), fresh weight (85.41 g) and dry weight (42.73 g) were found in Payel organic manure. The maximum leaf number (27) was recorded in Approshika organic manure. The maximum content of nitrogen (6.12%), phosphorus (1.83%), potassium (4.11%) and Sulphur (1.69%) were observed in Payel organic manure. The best growth performance and nutrient accumulation was observed in Payel organic manure. Dhaka Univ. J. Biol. Sci. 30(2): 159-168, 2021 (July)

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Protective Effect of Purple Lettuce (Lactuca sativa L.) Aqueous Extract on Physiological Quality of Lettuce Seedlings Subject to Salt Stress

Journal of Experimental Agriculture International ◽

10.9734/jeai/2018/42486 ◽

2018 ◽

Vol 24 (6) ◽

pp. 1-13

Author(s):

Cristiane Deuner ◽

Carolina Borges ◽

César Castellanos ◽

Sidnei Deuner ◽

Francisco Villela ◽

...

Keyword(s):

Salt Stress ◽

Protective Effect ◽

Aqueous Extract ◽

Lactuca Sativa ◽

Lactuca Sativa L ◽

Physiological Quality

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Improved Salinity Tolerance in Carrizo Citrange Rootstock through Overexpression of Glyoxalase System Genes

BioMed Research International ◽

10.1155/2015/827951 ◽

2015 ◽

Vol 2015 ◽

pp. 1-7 ◽

Cited By ~ 13

Author(s):

Ximena Alvarez-Gerding ◽

Rowena Cortés-Bullemore ◽

Consuelo Medina ◽

Jesús L. Romero-Romero ◽

Claudio Inostroza-Blancheteau ◽

...

Keyword(s):

Salt Stress ◽

Transgenic Plants ◽

Stress Tolerance ◽

Salinity Tolerance ◽

Dry Weight ◽

Wild Type Plant ◽

Wild Type ◽

Salt Stress Tolerance ◽

Glyoxalase System ◽

Carrizo Citrange

Citrus plants are widely cultivated around the world and, however, are one of the most salt stress sensitive crops. To improve salinity tolerance, transgenic Carrizo citrange rootstocks that overexpress glyoxalase I and glyoxalase II genes were obtained and their salt stress tolerance was evaluated. Molecular analysis showed high expression for both glyoxalase genes (BjGlyIandPgGlyII) in 5H03 and 5H04 lines. Under control conditions, transgenic and wild type plants presented normal morphology. In salinity treatments, the transgenic plants showed less yellowing, marginal burn in lower leaves and showed less than 40% of leaf damage compared with wild type plants. The transgenic plants showed a significant increase in the dry weight of shoot but there are no differences in the root and complete plant dry weight. In addition, a higher accumulation of chlorine is observed in the roots in transgenic line 5H03 but in shoot it was lower. Also, the wild type plant accumulated around 20% more chlorine in the shoot compared to roots. These results suggest that heterologous expression of glyoxalase system genes could enhance salt stress tolerance in Carrizo citrange rootstock and could be a good biotechnological approach to improve the abiotic stress tolerance in woody plant species.

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Assessing salt-stress tolerance in barley

Universitas Scientiarum ◽

10.11144/javeriana.sc24-1.asst ◽

2019 ◽

Vol 24 (1) ◽

pp. 91-109

Author(s):

Rajeswari Somasundaram ◽

Neeru Sood ◽

Gokhale Trupti Swarup ◽

Ramachandran Subramanian

Keyword(s):

Salt Stress ◽

Abiotic Stress ◽

Stress Tolerance ◽

Crop Yields ◽

Abiotic Stress Tolerance ◽

Dry Weight ◽

Cereal Crops ◽

Plant Responses ◽

Physiological Changes ◽

Salt Stress Tolerance

Identifying naturally existing abiotic-stress tolerant accessions in cereal crops is central to understanding plant responses toward sstress. Salinity is an abiotic stressor that limits crop yields. Salt stress triggers major physiological changes in plants, but individual plants may perform differently under salt stress. In the present study, 112 barley accessions were grown under controlled salt stress conditions (1 Sm-1 salinity) until harvest. The accessions were then analyzed for set of agronomic and physiological traits. Under salt stress, less than 5 % of the assessed accessions (CIHO6969, PI63926, PI295960, and PI531867) displayed early flowering. Only two (< 2 %) of the accessions (PI327671 and PI383011) attained higher fresh and dry weight, and a better yield under salt stress. Higher K+/Na+ ratios were maintained by four accessions PI531999, PI356780, PI452343, and PI532041. These top-performing accessions constitute naturally existing variants within barley’s gene pool that will be instrumental to deepen our understanding of abiotic-stress tolerance in crops.

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Produksi selada (Lactuca sativa l.) dengan penyinaran lampu led merah dan biru di malam hari pada teknologi hidroponik sistem terapung termodifikasi

Journal of Agro Complex ◽

10.14710/joac.2.1.79-85 ◽

2018 ◽

Vol 2 (1) ◽

pp. 79 ◽

Cited By ~ 1

Author(s):

Ardiansyah Azhary Suhandoko ◽

Sumarsono Sumarsono ◽

Endang Dwi Purbajanti

Keyword(s):

Lactuca Sativa ◽

Nutrient Concentration ◽

Light Emitting Diode ◽

Dry Weight ◽

Fresh Weight ◽

Light Emitting ◽

Blue Led ◽

Lactuca Sativa L ◽

Floating System ◽

Led Lights

This research has an aim to observe the production of lettuce (Lactuca sativa L.) on hydroponic technology of floating system with red and blue LED (Light Emitting Diode) at night. This research was conducted inside the Screenhouse in which located on the top of Griya Kads House building, Bulusan Village, Tembalang Sub-district from May to June 2017. The research was conducted by 3x3 factorial experiments in Nested Design with 3 replications. The first factor was 0, 1.5 and 3 hours irradiation of red and blue LED lights at night. The second factor was 3, 5 and 7 ml/liter of AB mix nutrient concentration which was nested in the first factor. The data collected were fresh weight, dry weight and root canopy ratio. The results of the study showed that the treatment of AB mix nutrient concentration had no significant effect on all parameters. The production of lettuce with level of 5 ml concentration of AB mix was quite good, yet 3 ml and 7 ml levels didn’t improve lettuce production. The duration of red and blue LED irradiation only resulted in an increase in the production of canopy fresh weight. This research can be concluded that 3 hours was sufficient to give the good results to improve the results of lettuce plants production. Keywords : Lettuce Production, AB Mix Nutrition, Red and Blue LED.

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PENGARUH PENAMBAHAN ABU SEKAM PADI (RICE HUSK ASH) DENGAN PROPORSI YANG BERBEDA TERHADAP PERTUMBUHAN SELADAI AIR (Lactuca sativa L.)

VIABEL Jurnal Ilmiah Ilmu-Ilmu Pertanian ◽

10.30957/viabel.v11i2.369 ◽

2017 ◽

Vol 11 (2) ◽

pp. 1-8

Author(s):

Tri Kurniastuti ◽

Palupi Puspitorini ◽

Tyas Nyonita Punjungsari

Keyword(s):

Plant Height ◽

Rice Husk ◽

Lactuca Sativa ◽

Rice Husk Ash ◽

Dry Weight ◽

Root Dry Weight ◽

Lactuca Sativa L ◽

Randomized Design ◽

Nutritional Needs ◽

Height Increase

Lettuce vegetables (Lactuca sativa L.) much needed by the community to meet the nutritional needs, but lettuce production is still low because of low productivity. Increasing the quality and quantity of vegetables grown on polybags is by fertilizing and arranging the composition of the planting medium. Provision of fertilizer aims to increase the supply of nutrients needed plants to boost the production and quality of crops. Fertilizer is to provide or add nutrients that plants need. However, fertilizer will tend to cause high production value and less appropriate with vegetable planting at home, therefore more optimized setting the composition of planting media. Planting media should be able to provide nutrients needed by plants. Farmers use plant residual organic materials such as rice husk as and cockpit for vegetable cultivation. The rice husk is the outermost part of the grain. The rice husk ash usually contains N 0.32%, P 0.15%, K 0.31%, Ca 0.96%, Fe 180 ppm, Mn 80.4 ppm Zn 14.10 ppm and pH 6, 8 which is expected to meet the needs of plant nutrients. The study was prepared using a complete randomized design with one factor that is the addition of planting media in the form of rice husk ash with the proportion of top soil and rice husk ash as follows: M1 (3: 1), M2 (2: 2), and M3 (1: 3). The observed variables were stem height, crown dry weight, and root dry weight. Data analysis used F Test 5% and continued with Duncan Multiple Range Test (DMRT) 5%. The results obtained at plant height of M3 (1: 3) gave the best result where there was a plant height increase of 40 cm from the first day of planting until the third day, the addition of rice husk ash did not affect the addition of root dry weight and dry weight of crown.

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Phytochemical Responses to Salt Stress in Red and Green Baby Leaf Lettuce (Lactuca sativa L.) Varieties Grown in a Floating Hydroponic Module

Separations ◽

10.3390/separations8100175 ◽

2021 ◽

Vol 8 (10) ◽

pp. 175

Author(s):

Giandomenico Corrado ◽

Paola Vitaglione ◽

Maria Giordano ◽

Giampaolo Raimondi ◽

Francesco Napolitano ◽

...

Keyword(s):

Salt Stress ◽

Lactuca Sativa ◽

Leaf Traits ◽

Leafy Vegetables ◽

Response Models ◽

Lactuca Sativa L ◽

Harvest Strategy ◽

Leaf Lettuce ◽

Full Factorial

Lettuce (Lactuca sativa L.) is one of the most popular leafy vegetables, appreciated globally as a low-calorie food with bioactive compounds. The application of a low dose of abiotic stress is considered a sustainable pre-harvest strategy to modify the nutraceutical value of horticultural products. In this work, we explored the response of two differently colored (red or green) baby leaf lettuce varieties to four NaCl concentrations in the nutrient solution (from 1 to 30 mM), using a full factorial design. We focused on leaf morphological parameters and possible phytochemical enhancement of the main polyphenols and anthocyanins, analyzed by LC-MS. The response to low-to-moderate salt stress exposure was affected mainly by salt concentration for leaf traits or by the cultivar for leaf color, with very limited factors’ interactions. Multivariate analysis indicated a predominant role of the genotypic factor in shaping differences in the two weeks growing cycle for baby leaf lettuce. Phytochemically, different dose–response models to sub-optimal saline conditions may be applied to the various compounds. A significant hormetic stimulation was present only for cyanidin-malonyl glucoside, the main anthocyanin present in the red cultivar.

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