Comprehensive evaluating of wild and cultivated emmer wheat (Triticum turgidum L.) genotypes response to salt stress

Feng, Kewei; Cui, Licao; Lv, Shuzuo; Bian, Jianxin; Wang, Meng; Song, Weining; Nie, Xiaojun

doi:10.1007/s10725-017-0337-5

Cited by 22 publications

(10 citation statements)

References 42 publications

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“…The homogenate was centrifuged at 4 000 g for 10 min and washed at least twice with 50 mM PBS buffer (pH 5.8), and then the pellets were dissolved and incubated in 1 M NaCl for 2 h. After it was centrifuged at 1 000 g for 10 min, the supernatant containing cell wall-bound POD (cw-POD) was collected. Enzyme activity was determined with the method of Dos Santos et al (2008). The reaction mixture consisted of 25 mM PBS (pH 6.8), 10 mM H2O2, 2.58 mM guaiacol, and the enzyme extract.…”

Section: Real-time Quantitative Pcr Of Gene Expressionmentioning

confidence: 99%

Comparison of antioxidant enzyme activity and gene expression in two new spring wheat cultivars treated with salinity

Xu¹,

Zhang²,

Li³

et al. 2021

Biologia plant.

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This study aimed to analyze element content, antioxidative response, and related gene expression in two new wheat (Tritium aestivum L.) cultivars Longchun 30 and Longchun 27 when exposed to different NaCl concentrations. Low NaCl concentration (25 mM) promoted root growth and decreased malondialdehyde (MDA) content and relative conductivity (REC) in Longchun 30. Differently, higher salinity stress (100 and 200 mM NaCl) inhibited root growth and increased MDA content and REC in both cultivars. Under salt stress, the increment of Na content in the roots and leaves and the reduction of Ca content in the roots were more remarkable in Longchun 27 than in Longchun 30. In contrast, the potassium content decreased in the roots but did not significantly change in the leaves in both cultivars under salinity. When the seedlings were exposed to salinity, the increases of superoxide dismutase (SOD) and catalase (CAT) activities in Longchun 27 roots were associated with high isoenzymes abundance and high TaCu/ZnSOD, TaMnSOD and TaCAT expression. Meanwhile, total peroxidase (POD) activity induced by NaCl treatment coincided with the changes of TaPOD expression and isoenzyme abundance in both cultivars. Besides, the inhibition of activities of apoplastic antioxidant enzymes, cell wall-bound POD, diamine oxidase, and polyamine oxidase was observed in salinity-stressed roots of both cultivars. Taken together, cv. Longchun 30 might be more suitable for growing in salinity environment in comparison with Longchun 27.

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Section: Real-time Quantitative Pcr Of Gene Expressionmentioning

confidence: 99%

Comparison of antioxidant enzyme activity and gene expression in two new spring wheat cultivars treated with salinity

Xu¹,

Zhang²,

Li³

et al. 2021

Biologia plant.

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“…In A. saligna, the STI recorded a 50% reduction at 200 and 400 mM NaCl, and this reduction reached 70% at 600 mM NaCl compared to control (Figure 2). Dry biomass is used to estimate the salinity tolerance index as suggested by many authors (Feng et al 2018) in order to evaluate the threshold of salinity tolerance over a given period. Our results indicate that plants exposed to salt stress at different concentrations had delaying effects on whole plant performance, including growth and development inhibition.…”

Section: Salinity Tolerance Indexmentioning

confidence: 99%

Physio-biochemical characterization of two acacia species (A. karroo Hayn and A. saligna Labill.) under saline conditions

Kheloufi

Mansouri

Anas

et al. 2019

REFOR

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Drought and salinity act simultaneously in tolerance and acclimatization under saline conditions. Therefore, plants subjected to these types of stress should have developed specific structural adaptations at the early stages of development. The solution to these environmental problems is to look for species that are relatively water-efficient and resistant to recurrent episodes of various abiotic stresses such as salt stress. In this study, the salinity tolerance index, ionic homeostasis and osmoprotection were evaluated in A. karroo and A. saligna plants of 90 days old and cultured at various concentrations of NaCl for 21 days. Results showed that salt caused remarkable changes in some growth-related parameters (dry biomass) represented by the salinity tolerance index (STI). Na + , Ca 2+ , and RatioNa+/K+ content in the leaves increased with salinity levels, while K + contents were significantly reduced compared to the control in both acacia species. Levels of proline, total free amino acids and reducing sugars have been accumulated considerably in the leaves. A. karroo was more salt-tolerant than A. saligna. Our results showed that the adaptability of a species to salinity is closely related to ion selectivity and biomass production. The seedlings also accumulated significantly a set of important osmolytes in leaves under salt stress, showing a marked increase in secondary metabolite accumulation. This adaptation proved very specific to each species for better survival in saline environments.

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“…So far, in bread wheat, using bi-parental mapping populations and varietal associative mapping panels, QTLs have been localized on the chromosomes of almost all homoeological groups, which indicates a complex genetic control of this trait in wheat (Ehdaie et al, 2016;Lui et al, 2019). Researchers are also looking for genetic diversity for root size in relatives of bread wheat (Feng et al, 2018). It has been shown that the presence of rye introgression in wheat genotypes leads to a significant increase in root weight and an increase in plant productivity under normal and drought conditions (Ehdaie et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

The relationship between the genetic status of the Vrn-1 locus and the size of the root system in bread wheat (Triticum aestivum L.)

Smirnova

Пшеничникова

2022

Vestn. VOGiS

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One of the main ways to fine-tune the adaptive potential of wheat cultivars is to regulate the timing of flowering using the genes of the Vrn-1 locus, which determines the type and rate of development. Recently, with the use of introgression and isogenic lines of bread wheat, it was shown that this locus is involved in the genetic control of root length and weight both under irrigation and drought conditions. It turned out that the VrnA1 gene is associated with a significant decrease in the size of the root system in a winter genotype. The Vrn-A1 gene had the strongest effect on the reduction of the root system in comparison with the homoeoallelic genes Vrn-B1 and Vrn-D1. The aim of this work was to determine whether the allelic composition of the genes at the Vrn-1 locus affects the root size in seven spring cultivars and in two lines of bread wheat differing in flowering time under conditions of normal watering and drought. The research was carried out in a hydroponic greenhouse; drought was created at the tillering stage. In this work, we have shown that early flowering wheat cultivars with the dominant Vrn-A1а allele have more lightweight and shorter roots under normal watering conditions compared to the late flowering carriers of the dominant homoeoalleles Vrn-B1 and Vrn-D1. In drought conditions, the root length decreased insignificantly, but the weight of the roots significantly decreased in all genotypes, with the exception of Diamant 2. It has been hypothesized that the level of the transcription factor VRN-1 at the onset of drought may affect the size of the root system. The large variability in root weight may indicate the participation, in addition to the Vrn-1 locus, of other gene networks in the formation of this trait. Breeders working to develop early maturing varieties should consider the possibility of reducing the root size, especially in arid conditions. A significant increase in the root size of line 821 with introgressions into chromosomes 2A, 2B, and 5A from T. timopheevii indicates the possibility of using congeners as a source of increasing the trait in wheat.

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Comprehensive evaluating of wild and cultivated emmer wheat (Triticum turgidum L.) genotypes response to salt stress

Cited by 22 publications

References 42 publications

Comparison of antioxidant enzyme activity and gene expression in two new spring wheat cultivars treated with salinity

Comparison of antioxidant enzyme activity and gene expression in two new spring wheat cultivars treated with salinity

Physio-biochemical characterization of two acacia species (A. karroo Hayn and A. saligna Labill.) under saline conditions

The relationship between the genetic status of the Vrn-1 locus and the size of the root system in bread wheat (Triticum aestivum L.)

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