Comparative analysis of salt impact on sea barley from semi-arid habitats in Tunisia and cultivated barley with special emphasis on reserve mobilization and stress recovery aptitude

Debez, Ahmed; Slimen, Imen Debez Ben; Bousselmi, Sawsen; Atia, Abdallah; Farhat, Nèjia; Kahoui, Salem El; Abdelly, Chédly

doi:10.1080/11263504.2019.1651777

Cited by 16 publications

(23 citation statements)

References 31 publications

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“…Salinity affects the seed germination process by altering water imbibition, changing enzymatic activities causing ionic toxicity, interfering with protein metabolism, causing hormonal imbalances, and reducing the possibility of seeds using their reserves, all of which delay and reduce the number of sprouting seeds (Läuchli and Grattan, 2007;Bordi, 2010;Munns et al, 2012;Parihar et al, 2015;Debez et al, 2019). Saline conditions create an external osmotic stress that reduces water availability and uptake…”

Section: Effect Of Salinity On Germinationmentioning

confidence: 99%

“…Barley, the fourth most important cereal in the world (Schulte et al, 2009;Visioni et al, 2019), is a glycophyte, but its salinity tolerance varies among genotypes (Mano and Takeda, 1997;Flowers and Hajibagheri, 2001;Xue et al, 2009;Debez et al, 2019). Some barley genotypes are able to thrive in saline conditions (Harlan, 1995;Shen et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Salinity tolerance in barley during germination—homologs and potential genes

Mwando

Angessa

Han

et al. 2020

J. Zhejiang Univ. Sci. B

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Salinity affects more than 6% of the world's total land area, causing massive losses in crop yield. Salinity inhibits plant growth and development through osmotic and ionic stresses; however, some plants exhibit adaptations through osmotic regulation, exclusion, and translocation of accumulated Na + or Cl −. Currently, there are no practical, economically viable methods for managing salinity, so the best practice is to grow crops with improved tolerance. Germination is the stage in a plant's life cycle most adversely affected by salinity. Barley, the fourth most important cereal crop in the world, has outstanding salinity tolerance, relative to other cereal crops. Here, we review the genetics of salinity tolerance in barley during germination by summarizing reported quantitative trait loci (QTLs) and functional genes. The homologs of candidate genes for salinity tolerance in Arabidopsis, soybean, maize, wheat, and rice have been blasted and mapped on the barley reference genome. The genetic diversity of three reported functional gene families for salt tolerance during barley germination, namely dehydration-responsive element-binding (DREB) protein, somatic embryogenesis receptor-like kinase and aquaporin genes, is discussed. While all three gene families show great diversity in most plant species, the DREB gene family is more diverse in barley than in wheat and rice. Further to this review, a convenient method for screening for salinity tolerance at germination is needed, and the mechanisms of action of the genes involved in salt tolerance need to be identified, validated, and transferred to commercial cultivars for field production in saline soil.

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Section: Effect Of Salinity On Germinationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Salinity tolerance in barley during germination—homologs and potential genes

Mwando

Angessa

Han

et al. 2020

J. Zhejiang Univ. Sci. B

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“…The reduction in germination is due to the increase in the osmotic pressure of the soil solution, which delays imbibition and limits the water absorption required for metabolism [22]. During germination, the salinity effects can be manifested firstly as osmotic (reversible) and secondly as toxic (irreversible) [23]. Thus, the seed will be rehydrated as soon as it is placed in soil containing sufficient moisture.…”

Section: Introductionmentioning

confidence: 99%

Comparing Salt Tolerance at Seedling and Germination Stages in Local Populations of Medicago ciliaris L. to Medicago intertexta L. and Medicago scutellata L.

Mbarki

Skalický

Vachová

et al. 2020

Plants

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Salt stress is one of the most serious environmental stressors that affect productivity of salt-sensitive crops. Medicago ciliaris is an annual legume whose adaptation to agroclimatic conditions has not been well described. This study focused on the salinity tolerance of M. ciliaris genotypes compared to M. intertexta and M. scutellata in terms of plant growth, physiology, and biochemistry. Salt tolerance was determined at both germination and early seedling growth. Germination and hydroponic assays were used with exposing seeds to 0, 50, 100, 150, and 200 mM NaCl. Among seven genotypes of M. ciliaris studied, Pop1, 355, and 667, were most salt tolerant. Populations like 355 and 667 showed marked tolerance to salinity at both germination and seedling stages (TI ≤1, SI(FGP) > 0 increased FGP ≥ 20% and SI(DW) < 0 (DW decline ≤ 20%); at 100 mM); while Pop1 was the most salt tolerant one at seedling stages with (TI =1.79, SI(FGP) < 0 decline of FGP ≤ 40% and with increased DW to 79%); at 150 mM NaCl). The genotypes, 306, 773, and M. scutellata, were moderately tolerant to salt stress depending on salt concentration. Our study may be used as an efficient strategy to reveal genetic variation in response to salt stress. This approach allows selection for desirable traits, enabling more efficient applications in breeding methods to achieve stress-tolerant M. ciliaris populations.

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“…Only 34% of the soils in the Western Cape Province are nonsaline and have an EC of less than 2 dS m −1 (Nell & van Huyssteen, 2018). Salinity and sodicity not only pose a significant risk to crop production in this region but also in many other semiarid parts of the world (Ahmed et al, 2019;Hussain et al, 2019). Locally, for example, Swanepoel and Tshuma (2017) reported a significant reduction in the number of viable annual Medicago seeds in the soil and reduced herbage production as a result of high concentrations of salts in the Western Cape Province of South Africa.…”

Section: Introductionmentioning

confidence: 99%

“…Field crops are most susceptible to osmotic stress in the early stages of growth (Yadav et al, 2019). Salinity may delay or even prevent the germination of seeds (Ahmed et al, 2019), particularly growth of the radicle (Kshetrimayum, Sahoo, Mitra, & Panda, 2017). Uniform germination and establishment of crops depend on the quality of the seed planted and the conditions under which the seed was planted (Acquaah, 2002).…”

Section: Introductionmentioning

confidence: 99%

Effect of salinity on the germination of wheat and barley in South Africa

Bagwasi

Agenbag

Swanepoel

2020

Crop Forage & Turfgrass Mgmt

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Field crops are most susceptible to salt stress in the early stages of growth. There is a general belief that barley (Hordeum vulgare L.) is more salt‐tolerant than wheat (Triticum aestivum L.), yet little is known regarding the response of different South African wheat and barley cultivars to saline conditions. An experiment was conducted to study the effects of salinity on seed germination in three South African spring wheat cultivars (SST 027, SST 056, and SST 087) and three spring barley cultivars (Nemesia, Erica, and Hessekwa). The experiment was conducted in petri dishes in a growth incubator at a constant temperature of 20 °C for 7 d. Seeds were exposed to five NaCl solutions with electrical conductivity (EC) levels of 4, 8, 12, 16, and 20 dS m−1 and were compared with those exposed to a solution with an EC of 0 dS m−1 (distilled water), which served as a control. The experiment design was a completely randomized design. The study showed that salinity influenced seed germination in all wheat and barley cultivars. Although all cultivars showed a reduction in total germination percentage with increasing salinity from EC levels of 0 to 20 dS m−1, the differences were only significant (P < .05) at high EC levels (16–20 dS m−1). Wheat cultivars outperformed barley cultivars at EC levels of 0, 4, 8, 12, and 16 dS m−1. The study showed that salinity influenced seed germination in both wheat and barley, but barley was less salt‐tolerant during germination than wheat.

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Comparative analysis of salt impact on sea barley from semi-arid habitats in Tunisia and cultivated barley with special emphasis on reserve mobilization and stress recovery aptitude

Cited by 16 publications

References 31 publications

Salinity tolerance in barley during germination—homologs and potential genes

Salinity tolerance in barley during germination—homologs and potential genes

Comparing Salt Tolerance at Seedling and Germination Stages in Local Populations of Medicago ciliaris L. to Medicago intertexta L. and Medicago scutellata L.

Effect of salinity on the germination of wheat and barley in South Africa

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