Tomato Response to Salt Stress

Agong, Stephen Gaya; Yoshida, Yutaro; Yazawa, Susumu; Masuda, Masaharu

doi:10.17660/actahortic.2004.637.10

Cited by 13 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of present work clearly revealed that salinity caused significant reduction in plant height, leaf area, shoot fresh and dry weights in both maize hybrids at all three growth stages. These results are in agreement with those of (Yustseven et al 2003;Agong et al 2004;Hajer et al 2006) who reported that salinity caused reduction in plant growth. This reduction in plant growth might be due to ions toxicity or decreased osmotic potential as well as low wall extensibility (Grieve et al 2001;Haplerin and Lynch 2003).…”

Section: Discussionsupporting

confidence: 93%

Potassium application mitigates salt stress differentially at different growth stages in tolerant and sensitive maize hybrids

et al. 2015

View full text Add to dashboard Cite

A pot experiment was conducted to investigate the role of potassium (K) in extenuating the injurious effect of salt stress on maize hybrids differing in salt tolerance at different growth stages. One salt-sensitive viz. 8441 and one salt-tolerant viz. 26,204 maize hybrids were sown in pots having 12 kg soil. The recommended dose of nitrogen and phosphorus @ 200 and 150 kg ha -1 with different rate of potassium (75, 150 and 300 kg ha -1 ) and salinity level (10 dS m -1 ) was developed in soil before filling the pots. Salinity stress reduced plant growth by affecting plant morphological characteristics, reducing relative water contents and membrane stability index, decreasing photosynthetic activities, altering K ? /Na ? ratios and antioxidant activities of both maize hybrids at all three growth stages. However, results also depicts that maximum relative water contents, membrane stability index, gas exchange attributes, photosynthetic pigments, antioxidant enzymes activities and proline contents was observed at reproductive growth stage as compared to vegetative and grain development growth stages in both hybrids. The inhibitory effect of salt stress was more pronounced on maize hybrid 8441 than 26,204. But, addition of potassium significantly alleviates harmful effect of salinity by improving the plant growth, gas exchange parameters, enhancing K ? /Na ? ratios and antioxidant activities of both maize hybrids. Potassium application (300 kg K ha -1 ) was found more effective in alleviating perilous effect of salinity as compared to other two levels. Salt tolerant maize hybrid (26,204) produced more biomass, less shoot Na ? concentration, high K ? concentration, exhibited more chlorophyll contents, gas exchange parameters and antioxidant enzymes activities under salt stress condition at all growth stages as compared to salt sensitive maize hybrids (8441). These results suggested that potassium application counteracted the unfavorable effects of salinity on growth of maize by civilizing photosynthetic capacity of maize plants against salinity-induced oxidative stress and maintaining ion homeostasis, however, these alleviating effects were cultivar specific.

show abstract

Section: Discussionsupporting

confidence: 93%

Potassium application mitigates salt stress differentially at different growth stages in tolerant and sensitive maize hybrids

et al. 2015

View full text Add to dashboard Cite

show abstract

“…In this study and in agreement with previous studies, Salinity reduced plant height (Achilea et al, 2002;Agong et al, 2004;Hajer et al, 2006) and leaf area (Li and Stanghelni, 2001;Mulholland et al, 2002;Maggio et al, 2004;Agong et al, 2004), fresh weight (Hassan et al, 1999;Sonneveld, 2000;Amico et al, 2003;Hajer et al, 2006) as well as dry weight (Li, 2000). Salinity affects plant growth by weakening the plant's abity to absorb water from the bed it ves in.…”

Section: Discussionsupporting

confidence: 91%

Study of the Effects Irrigation Water Sanity and pH on Production and Relative Absorption of some Elements Nutrient by the Tomato Plant

Afshari¹

2011

American Journal of Applied Sciences

View full text Add to dashboard Cite

Problem statement:This study was conducted to examine the effects of irrigation water pH and Salinity on the growth and absorption of P, Na, Ca, K by tomato. Approach:The study includes two Salinity and pH factors and is consisted from 12 treatment and three repetitions. Tomato seeding grown in foam trays were transplanted in the joune 2010 to bags filled with perte in an Greenhouse at Damghan Islamic Azad University of Iran. Plant were divided into groups then irrigated with the targeted sane and pH levels. Plants were hand-irrigated with fresh water and fertized with required nutritional solutions were prepared based on bed nutrients mitation. Greenhouse temperature was maintained in suitable level using air conditioner and its humidity was controlled by hygrometer and adjusted in the range of 60-80%. Water Salinity factors were consisted from four levels (0, 3, 6 and 9 dsm −1 ) and pH factor was consisted from three levels (6.5, 7.5 and 8.5). Salinity and pH treatments were adjusted with Nacl and H 2 SO 4 /N 2 CO 3 salts respectively. Study of the effects of Salinity and pH level on tomato were recorded and controlled depending on number of growing fruit, fertized flowers, plant dry weight, plant height, percentage of P, Na, Ca, K in leaves. Then results were studied by Anova Variance Analysis using SAS software and obtaining significant results, Dunken test was used for comparison of average levels in probabity level of 5%. Results: Data showed that all growth parameters such as plant height, leaf area, plant dry weight, percentage of P,Ca,K in leave responded negatively as the Salinity and pH level increased. Only Na + content in the leaves responded positively to increment in Salinity and pH level. Conclusion: Based on results, Salinity reduced plant height as well as dry weight and increasing of Salinity and pH increased supply of Na+ in tomato leaf.

show abstract

“…In previous studies, maximum chlorophyll content was observed at 1.0 M salinity in D. salina and thereafter it decreased with increasing salt concentration [10] while chlorophyll a was observed significantly higher at 3.0 M NaCl in D. tertiolecta [10,18]. In higher plants, it has been observed that salt treatment (0.3 M NaCl) stimulates chlorophyll production per unit leaf area, such as in tomato [1]. Dunaliella responds to high salinity by enhancing photosynthetic CO 2 assimilation, by diversion of carbon and energy resources for the synthesis of glycerol and the osmotic element [41].…”

Section: Chlorophyll Contentmentioning

confidence: 88%

Physiological characterization and stress-induced metabolic responses of Dunaliella salina isolated from salt pan

Mishra

Mandoli

Jha

2008

J Ind Microbiol Biotechnol

View full text Add to dashboard Cite

A Dunaliella strain was isolated from salt crystals obtained from experimental salt farm of the institute (latitude 21.46 N, longitude 72.11 degrees E). The comparative homology study of amplified molecular signature 18S rRNA, proves the isolated strain as D. salina. The growth pattern and metabolic responses such as proline, glycine betaine, glycerol, total protein and total sugar content to different salinity (from 0.5 to 5.5 M NaCl) were studied. The optimum growth was observed at 1.0 M NaCl and thereafter it started to decline. Maximum growth was obtained on 17th day of inoculation in all salt concentrations except 0.5 M NaCl, whereas maximum growth was observed on 13th day. There were no significant differences (P < 0.01) in chlorophyll a/b contents (1.0-1.16 +/- 0.05 microg chl. a and 0.2-0.29 +/- 0.01 microg chl. b per 10(6) cells) up to 2.0 M NaCl, however at 3.0 M NaCl a significant increase (2.5 +/- 0.12 microg chl. a and 0.84 +/- 0.4 microg chl. b per 10(6) cells) was observed which declined again at 5.5 M NaCl concentration (2.0 +/- 0.1 microg chl. a and 0.52 +/- 0.03 microg chl. b per 10(6) cells). Stress metabolites such as proline, glycine betaine, glycerol and total sugar content increased concomitantly with salt concentration. Maximum increase in proline (1.4 +/- 0.07 microg), glycine betaine (5.7 +/- 0.28 microg), glycerol (3.7 +/- 0.18 ml) and total sugar (250 +/- 12.5 microg) per 10(5) cells was observed in 5.5 M NaCl. A decrease in total protein with reference to 0.5 M NaCl was observed up to 3.0 M NaCl, however, a significant increase (P < 0.01) was observed at 5.5 M NaCl (0.19 +/- 0.01 microg per 10(5) cells). Inductive coupled plasma (ICP) analysis shows that intracellular Na(+) remained unchanged up to 2.0 M NaCl concentration and thereafter a significant increase was observed. No relevant increase in the intracellular level of K(+) and Mg(++) was observed with increasing salt concentration. Evaluation of physiological and metabolic attributes of Dunaliella salina can be used to explore its biotechnological and industrial potential.

show abstract

Tomato Response to Salt Stress

Cited by 13 publications

References 0 publications

Potassium application mitigates salt stress differentially at different growth stages in tolerant and sensitive maize hybrids

Potassium application mitigates salt stress differentially at different growth stages in tolerant and sensitive maize hybrids

Study of the Effects Irrigation Water Sanity and pH on Production and Relative Absorption of some Elements Nutrient by the Tomato Plant

Physiological characterization and stress-induced metabolic responses of Dunaliella salina isolated from salt pan

Contact Info

Product

Resources

About