Some physiological and biochemical aspects of salt tolerance of Sesuvium portulacastrum

2003 ◽  
pp. 71-77 ◽  
Author(s):  
D. Messedi ◽  
N. Sleimi ◽  
C. Abdelly
Keyword(s):  
Salt Tolerance ◽  
Sesuvium Portulacastrum ◽  
Physiological And Biochemical

scholarly journals Morphological, physiological and biochemical aspects of salt tolerance of halophyte Petrosimonia triandra grown in natural habitat

2019 ◽  
Vol 25 (6) ◽  
pp. 1335-1347 ◽  
Author(s):  
Dorina Podar ◽  
Kunigunda Macalik ◽  
Kinga-Olga Réti ◽  
Ildikó Martonos ◽  
Edina Török ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Natural Habitat ◽  
Physiological And Biochemical

scholarly journals Mechanism of Salt Tolerance in Fruit Crops: A Review

2020 ◽  
Vol 41 (01) ◽  
Author(s):  
P. K. Nimbolkar ◽  
Jyoti Bajeli ◽  
Arunima Tripathi ◽  
A. K. Chaube
Keyword(s):  
Salt Tolerance ◽  
Salinity Stress ◽  
Crop Production ◽  
Critical Factor ◽  
Fruit Crops ◽  
Whole Plant ◽  
Metabolic Activities ◽  
Plant Level ◽  
Ionic Components ◽  
Physiological And Biochemical

Salinity in soil and water is a critical factor that is causing hindrance in crop production under salt affected areas. Plant metabolic activities are apparently restricted due to accumulation of salt. The event of salt stress happens to be the reason of severe alteration in the sequence of plant growth and development which ultimately reduces the survivability of plants. The physiological and biochemical mechanisms of tolerance to various osmotic and ionic components of salinity stress are evaluated at the cellular, organ and whole plant level. The course of adaptation towards salinity stress could be of various types such as avoidance, exclusion, extrusion, ion compartmentalization etc. Appropriate understanding of mechanism involved in salt tolerance at different levels in plant tissues provide a new opportunity to integrate physiological and biochemical knowledge to improve the salinity tolerance of fruit crops, especially from the nutritional aspect. Such information not only helpful in escalating the productivity in salt affected areas, but also facilitate in bringing relatively more salt affected areas under cultivation.

scholarly journals Agronomical, Physiological and Biochemical Characterization of In Vitro Selected Eggplant Somaclonal Variants under NaCl Stress

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2544
Author(s):  
Sami Hannachi ◽  
Stefaan Werbrouck ◽  
Insaf Bahrini ◽  
Abdelmuhsin Abdelgadir ◽  
Hira Affan Siddiqui
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Normal Growth ◽  
Nacl Stress ◽  
Soluble Carbohydrates ◽  
Regenerated Plants ◽  
And Control ◽  
Physiological And Biochemical

Previously, an efficient regeneration protocol was established and applied to regenerate plants from calli lines that could grow on eggplant leaf explants after a stepwise in vitro selection for tolerance to salt stress. Plants were regenerated from calli lines that could tolerate up to 120 mM NaCl. For further in vitro and in vivo evaluation, four plants with a higher number of leaves and longer roots were selected from the 32 plants tested in vitro. The aim of this study was to confirm the stability of salt tolerance in the progeny of these four mutants (‘R18’, ‘R19’, ‘R23’ and ‘R30’). After three years of in vivo culture, we evaluated the impact of NaCl stress on agronomic, physiological and biochemical parameters compared to the parental control (‘P’). The regenerated and control plants were assessed under in vitro and in vivo conditions and were subjected to 0, 40, 80 and 160 mM of NaCl. Our results show significant variation in salinity tolerance among regenerated and control plants, indicating the superiority of four regenerants (‘R18’, ‘R19’, ‘R23’ and ‘R30’) when compared to the parental line (‘P’). In vitro germination kinetics and young seedling growth divided the lines into a sensitive and a tolerant group. ‘P’ tolerate only moderate salt stress, up to 40 mM NaCl, while the tolerance level of ‘R18’, ‘R19’, ‘R23’ and ‘R30’ was up to 80 mM NaCl. The quantum yield of PSII (ΦPSII) declined significantly in ‘P’ under salt stress. The photochemical quenching was reduced while nonphotochemical quenching rose in ‘P’ under salt stress. Interestingly, the regenerants (‘R18’, ‘R19’, ‘R23’ and ‘R30’) exhibited high apparent salt tolerance by maintaining quite stable Chl fluorescence parameters. Rising NaCl concentration led to a substantial increase in foliar proline, malondialdehyde and soluble carbohydrates accumulation in ‘P’. On the contrary, ‘R18’, ‘R19’, ‘R23’ and ‘R30’ exhibited a decline in soluble carbohydrates and a significant enhancement in starch under salinity conditions. The water status reflected by midday leaf water potential (ψl) and leaf osmotic potential (ψπ) was significantly affected in ‘P’ and was maintained a stable level in ‘R18’, ‘R19’, ‘R23’ and ‘R30’ under salt stress. The increase in foliar Na+ and Cl− content was more accentuated in parental plants than in regenerated plants. The leaf K+, Ca2+ and Mg2+ content reduction was more aggravated under salt stress in ‘P’. Under increased salt concentration, ‘R18’, ‘R19’, ‘R23’ and ‘R30’ associate lower foliar Na+ content with a higher plant tolerance index (PTI), thus maintaining a normal growth, while foliar Na+ accumulation was more pronounced in ‘P’, revealing their failure in maintaining normal growth under salinity stress. ‘R18’, ‘R19’, ‘R23’ and ‘R30’ showed an obvious salt tolerance by maintaining significantly high chlorophyll content. In ‘R18’, ‘R19’, ‘R23’ and ‘R30’, the enzyme scavenging machinery was more performant in the roots compared to the leaves. Salt stress led to a significant augmentation of catalase, ascorbate peroxidase and guaiacol peroxidase activities in the roots of ‘R18’, ‘R19’, ‘R23’ and ‘R30’. In contrast, enzyme activities were less enhanced in ‘P’, indicating lower efficiency to cope with oxidative stress than in ‘R18’, ‘R19’, ‘R23’ and ‘R30’. ACC deaminase activity was significantly higher in ‘R18’, ‘R19’, ‘R23’ and ‘R30’ than in ‘P’. The present study suggests that regenerated plants ‘R18’, ‘R19’, ‘R23’ and ‘R30’ showed an evident stability in tolerating salinity, which shows their potential to be adopted as interesting selected mutants, providing the desired salt tolerance trait in eggplant.

An aquaporin gene from halophyte Sesuvium portulacastrum, SpAQP1, increases salt tolerance in transgenic tobacco

2015 ◽  
Vol 35 (2) ◽  
pp. 385-395 ◽  
Author(s):  
Wenjun Chang ◽  
Xiwen Liu ◽  
Jiahong Zhu ◽  
Wei Fan ◽  
Zhili Zhang
Keyword(s):  
Salt Tolerance ◽  
Transgenic Tobacco ◽  
Sesuvium Portulacastrum ◽  
Aquaporin Gene

scholarly journals Adaptive Mechanisms of Halophytes and Their Potential in Improving Salinity Tolerance in Plants

2021 ◽  
Vol 22 (19) ◽  
pp. 10733
Author(s):  
Md. Mezanur Rahman ◽  
Mohammad Golam Mostofa ◽  
Sanjida Sultana Keya ◽  
Md. Nurealam Siddiqui ◽  
Md. Mesbah Uddin Ansary ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Sustainable Agriculture ◽  
Contaminated Soils ◽  
Anthropogenic Activities ◽  
Soil Salinization ◽  
Saline Soils ◽  
Negative Effects ◽  
Defense Proteins ◽  
Biochemical Adaptation ◽  
Physiological And Biochemical

Soil salinization, which is aggravated by climate change and inappropriate anthropogenic activities, has emerged as a serious environmental problem, threatening sustainable agriculture and future food security. Although there has been considerable progress in developing crop varieties by introducing salt tolerance-associated traits, most crop cultivars grown in saline soils still exhibit a decline in yield, necessitating the search for alternatives. Halophytes, with their intrinsic salt tolerance characteristics, are known to have great potential in rehabilitating salt-contaminated soils to support plant growth in saline soils by employing various strategies, including phytoremediation. In addition, the recent identification and characterization of salt tolerance-related genes encoding signaling components from halophytes, which are naturally grown under high salinity, have paved the way for the development of transgenic crops with improved salt tolerance. In this review, we aim to provide a comprehensive update on salinity-induced negative effects on soils and plants, including alterations of physicochemical properties in soils, and changes in physiological and biochemical processes and ion disparities in plants. We also review the physiological and biochemical adaptation strategies that help halophytes grow and survive in salinity-affected areas. Furthermore, we illustrate the halophyte-mediated phytoremediation process in salinity-affected areas, as well as their potential impacts on soil properties. Importantly, based on the recent findings on salt tolerance mechanisms in halophytes, we also comprehensively discuss the potential of improving salt tolerance in crop plants by introducing candidate genes related to antiporters, ion transporters, antioxidants, and defense proteins from halophytes for conserving sustainable agriculture in salinity-prone areas.

Salt tolerance in Sesuvium portulacastrum

2001 ◽  
pp. 406-407 ◽  
Author(s):  
D. Messeddi ◽  
N. Sleimi ◽  
C. Abdelly
Keyword(s):  
Salt Tolerance ◽  
Sesuvium Portulacastrum
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