Evaluation of salt tolerance at the seedling stage in rice genotypes by growth performance, ion accumulation, proline and chlorophyll content

Kanawapee, Nantawan; Sanitchon, Jirawat; Lontom, Watanachai; Threerakulpisut, Piyada

doi:10.1007/s11104-012-1179-6

Cited by 68 publications

(52 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some investigators suggested that proline accumulation was negatively related to the degree of salt tolerance and proline was a symptom of salt stress. 40 The results of the present study showed that under saline conditions, seed priming with the highest concentration of mannitol and KNO 3 , and low dilutions of wood vinegar (1:1000 and 1:300) (i.e., under salt stress) reduced proline content ( Figure 2B). Our results confirmed the previous findings that rice seedlings raised from seeds primed with various dilutions of smoke water (1:500, 1:1000 and 1:5000) accumulated lower amount of proline under salt-stressed conditions as compared with seedlings grown from non-primed seeds.…”

Section: Discussionmentioning

confidence: 49%

Seed Priming Alleviated Salt Stress Effects on Rice Seedlings by Improving Na+/K+ and Maintaining Membrane Integrity

Theerakulpisut

Kanawapee

Panwong

2017

IJPB

Self Cite

View full text Add to dashboard Cite

The potential of seed priming by different chemicals on alleviation of growth inhibition of rice (Oryza sativa L.) seedlings under salt stress was investigated. A preliminary experiment using 10 seed-priming chemicals including NaCl, KCl, CaCl 2 , KNO 3 , ascorbic acid (AsA), mannitol, polyethylene glycol (PEG 6000 ), sorbitol, wood vinegar and distilled water revealed that mannitol, KNO 3 and wood vinegar were more effective than the others in alleviating salt-induced growth inhibition of 10-day-old seedlings. Various concentrations of mannitol (1, 2 and 3%), KNO 3 (0.25, 0.5 and 0.75%) and wood vinegar (1:1000, 1:300 and 1:100 dilutions) were subsequently used to prime rice seeds to investigate the effects on mitigation of salt-induced growth inhibition and modulation of physiological responses of 4-week-old rice plants grown in a hydroponic solution. All tested concentrations of mannitol, KNO 3 and wood vinegar resulted in seedlings with significantly higher dry weights than those grown from non-primed and hydroprimed seeds under both controlled and saltstressed (150 mM NaCl, 7 days) conditions. Under salt stress, enhanced growth of seedlings raised from seeds primed with all three chemicals was attributable to greater membrane stability, higher chlorophyll content and lower Na + /K + ratio.

show abstract

Section: Discussionmentioning

confidence: 49%

Seed Priming Alleviated Salt Stress Effects on Rice Seedlings by Improving Na+/K+ and Maintaining Membrane Integrity

Theerakulpisut

Kanawapee

Panwong

2017

IJPB

Self Cite

View full text Add to dashboard Cite

show abstract

“…Under saline conditions, plants are generally exposed to four major constraints: (i) low osmotic potential of soil solution (osmotic stress); (ii) specific ion effects (ion stress); (iii) restriction of leaf CO 2 capture due to stomatal closure; and (iv) nutritional imbalance leading to damaging effects on plant growth and development (Kanawapee et al . ; Hussin et al . ).…”

Section: Introductionmentioning

confidence: 99%

Salt tolerance of Beta macrocarpa is associated with efficient osmotic adjustment and increased apoplastic water content

et al. 2015

View full text Add to dashboard Cite

The chenopod Beta macrocarpa Guss (wild Swiss chard) is known for its salt tolerance, but the mechanisms involved are still debated. In order to elucidate the processes involved, we grew wild Swiss chard exposed to three salinity levels (0, 100 and 200 mm NaCl) for 45 days, and determined several physiological parameters at the end of this time. All plants survived despite reductions in growth, photosynthesis and stomatal conductance in plants exposed to salinity (100 and 200 mm NaCl). As expected, the negative effects of salinity were more pronounced at 200 mm than at 100 mm NaCl: (i) leaf apoplastic water content was maintained or increased despite a significant reduction in leaf water potential, revealing the halophytic character of B. macrocarpa; (ii) osmotic adjustment occurred, which presumably enhanced the driving force for water extraction from soil, and avoided toxic build up of Na(+) and Cl(-) in the mesophyll apoplast of leaves. Osmotic adjustment mainly occurred through accumulation of inorganic ions and to a lesser extent soluble sugars; proline was not implicated in osmotic adjustment. Overall, two important mechanisms of salt tolerance in B. macrocarpa were identified: osmotic and apoplastic water adjustment.

show abstract

“…It has been reported that Alternanthera bettzickiana plants at salinitiy level of 20 dS/m will produce 30.3% less biomass than controls. Further increasing salinity will lead to lower biomass in response to higher salt stress (Ali et However, another study has shown that chlorophyll content cannot be used as an indicator of salt tolerance ability (Kanawapee et al, 2012). Although plant species can differ considerably in total amount of chlorophyll content under salt stress, results from this study suggest that chlorophyll content might be considered as an additional trait useful for screening salt tolerance.…”

Section: Discussionmentioning

confidence: 76%

“…Proline content was analyzed with the modified procedure of Kanawapee et al (2012). Briefly, the third and fourth leaves from the apical shoot of three plants per treatment were frozen immediately in liquid nitrogen at harvest.…”

Section: Measurementsmentioning

confidence: 99%

Morphological and Physiological Responses of Purple Chrysanthemum (Aster Sphathulifolius) Under Long-Term Stress of Calcium Chloride as Deicing Salt

Ju¹

2018

Appl. Ecol. Env. Res.

View full text Add to dashboard Cite

Abstract. Long-term research on the effect of deicers on groundcover plants can open up usage of groundcover plants for ornamental purposes on the roadside affected by deicer salt. The objective of this study was to investigate the long-term effect of CaCl 2 on morphological and physical responses of purple chrysanthemum (Aster sphathulifolius) grown in a greenhouse. Five different concentrations (0, 1, 2, 5, 10, and 15 g/L) of road deicer (CaCl 2 74%) solutions (100 ml) were applied twice a week for a 5 month period. Survival rate, growth parameter, biomass, and physiological indices were measured. Increased CaCl 2 concentration resulted in decreased survival rate, especially at concentrations higher than 10 g/L. Exposure to increasing CaCl 2 concentrations resulted in dramatic decreases in growth index, number of leaves, leaf width, and leaf length at concentration higher than 2 g/L. Biomass was also negatively affected by increasing deicer salt stress, with shoot mass being reduced more than root fresh weight. Chlorophyll b content was decreased, while chlorophyll a and proline contents in leaves had a gradual increase when plants were exposed to increasing salt stress. Although a clear roadside negative effect did exist, there was no significant difference between plants under 1 g/L of CaCl 2 and control treatment for 5 months. Our results suggest that Aster sphathulifolius planting could be highly beneficial to the roadside or urban areas with mildly salt-affected soils.

show abstract

Evaluation of salt tolerance at the seedling stage in rice genotypes by growth performance, ion accumulation, proline and chlorophyll content

Cited by 68 publications

References 46 publications

Seed Priming Alleviated Salt Stress Effects on Rice Seedlings by Improving Na+/K+ and Maintaining Membrane Integrity

Seed Priming Alleviated Salt Stress Effects on Rice Seedlings by Improving Na+/K+ and Maintaining Membrane Integrity

Salt tolerance of Beta macrocarpa is associated with efficient osmotic adjustment and increased apoplastic water content

Morphological and Physiological Responses of Purple Chrysanthemum (Aster Sphathulifolius) Under Long-Term Stress of Calcium Chloride as Deicing Salt

Contact Info

Product

Resources

About