Physiological and biochemical markers for screening salt tolerant quinoa genotypes at early seedling stage

Derbali, Walid; Goussi, Rahma; Koyro, Hans‐Werner; Abdelly, Chédly; Manaa, Arafet

doi:10.1080/17429145.2020.1722266

Cited by 21 publications

(17 citation statements)

References 81 publications

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“…Malondialdehyde and hydrogen peroxide (H 2 O 2 ) level enhanced significantly (P ≤ 0.001) under saline conditions in our study (Table 2, Figure 4). Our findings are in accordance with the past studies in rice (Shahbaz et al, 2017) and quinoa (Derbali et al, 2020). Presowing seed treatment with GB prominently (P ≤ 0.001) reduced the both MDA and H 2 O 2 both under nonsaline and saline conditions.…”

Section: Biochemical Attributessupporting

confidence: 93%

Presowing seed treatment with glycine betaine confers NaCl tolerance in quinoa by modulating some physiological processes and antioxidant machinery

Maqsood¹,

Shahbaz²,

Arfan³

et al. 2020

Turk J Bot

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IntroductionGlobal warming induced climatic changes are among the major causes for salinity and drought stresses which ultimately reduce plant growth and yield. Therefore, the study of different physiological processes in plants is of prime importance for improvement in food security (Abdallah et al., 2020). Salinization, as a serious problem, is increasing day by day worldwide and considerably affects the arable lands particularly in dryland environments. Up to the mid of 21st century, 50% arable land will be lost due to salinity as the salinity is increasing about 10% annually (Al-Dakheel and Hussain, 2016). Accumulation of salts changes different physiological mechanisms like gas exchange parameters and chlorophyll fluorescence in crop plants (Shahbaz et al., 2017). Salinity also disturbs the numerous metabolic processes especially CO 2 assimilation rate and reduces the growth in rice (Shahbaz and Zia, 2011) and sunflower (Lalarukh and Shahbaz, 2018). Salinity is a major factor that reduces plant development and yield (Shahbaz et al., 2017;Lalarukh and Shahbaz, 2018).Oxidative stress generated due to excessive production of reactive oxygen species (ROS) leads to the upregulation of defensive mechanism in plants, i.e., enzymatic (catalase, superoxide dismutase and peroxidase) as well as nonenzymatic (ascorbate, tocopherol and phenolics) antioxidants (Shafiq et al., 2015). Enzymatic antioxidants support the steady development and reclamation of ROS, produced under stress condition. Being a halophyte, quinoa has a diversified range of different salt tolerant mechanisms (Ruiz et al., 2016).Halophytes are used as a source of food even under high saline conditions. Because of its tolerance to different abiotic stresses and superior nutritional profile, quinoa has a great potential to meet human food resources (Ruiz et al., 2016). Quinoa has strong ability to survive in harsh environmental conditions like salinity and drought.

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Section: Biochemical Attributessupporting

confidence: 93%

Presowing seed treatment with glycine betaine confers NaCl tolerance in quinoa by modulating some physiological processes and antioxidant machinery

Maqsood¹,

Shahbaz²,

Arfan³

et al. 2020

Turk J Bot

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“…Similarly, Jabeen et al [96] observed a higher amount of MDA content in the roots (44%) than the leaves (38%) compared to the control when Glycine max plants were exposed to 100 mM NaCl. Derbali et al [97] evaluated four genotypes of Chenopodium quinoa (cvs. Tumeko, Red Faro, Kcoito and UDEC-5) under different doses of salt (100, 300 and 500 mM NaCl) and reported that both the MDA and H 2 O 2 contents increased in a dose-dependent manner in these four genotypes.…”

Section: Salinity-induced Oxidative Stress In Plantsmentioning

confidence: 99%

Regulation of Reactive Oxygen Species and Antioxidant Defense in Plants under Salinity

Hasanuzzaman

Raihan

Masud

et al. 2021

IJMS

292

153

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The generation of oxygen radicals and their derivatives, known as reactive oxygen species, (ROS) is a part of the signaling process in higher plants at lower concentrations, but at higher concentrations, those ROS cause oxidative stress. Salinity-induced osmotic stress and ionic stress trigger the overproduction of ROS and, ultimately, result in oxidative damage to cell organelles and membrane components, and at severe levels, they cause cell and plant death. The antioxidant defense system protects the plant from salt-induced oxidative damage by detoxifying the ROS and also by maintaining the balance of ROS generation under salt stress. Different plant hormones and genes are also associated with the signaling and antioxidant defense system to protect plants when they are exposed to salt stress. Salt-induced ROS overgeneration is one of the major reasons for hampering the morpho-physiological and biochemical activities of plants which can be largely restored through enhancing the antioxidant defense system that detoxifies ROS. In this review, we discuss the salt-induced generation of ROS, oxidative stress and antioxidant defense of plants under salinity.

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“…There is abundant literature elucidating several mechanisms that contribute to quinoa's high salinity tolerance, and most of them attribute this tolerance to its efficient sodium (Na + ) sequestration in leaf vacuoles, oxidative stress protection, and potassium (K + ) retention (Adolf et al, 2013;Iqbal et al, 2020;Shabala et al, 2012). However, salinity tolerance was shown to widely vary among quinoa cultivars/genotypes (Adolf et al, 2012;Peterson & Murphy, 2015) and between different growth stages (Derbali et al, 2020;Maleki et al,…”

Section: Introductionmentioning

confidence: 99%

Evaluation of quinoa genotypes for their salinity tolerance at germination and seedling stages

Chaganti¹,

Ganjegunte²

2022

Agrosystems Geosci & Env

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Freshwater scarcity and salinity stress are major constraints for irrigated agriculture in the arid West Texas region. Alternative crops that are tolerant to salinity and less water-intensive are needed for long-term agricultural sustainability in this region.Quinoa (Chenopodium quinoa Willd.) is a halophytic crop with its seed having high market value and that can be a potential substitute for traditional crops. However, its salinity tolerance is a variable trait among genotypes and was shown to differ with growth stages. This study evaluated 25 quinoa genotypes that are suitable for growing in this arid region for their salinity tolerance at germination stage and classified them based on their stress tolerance index (STI). A completely randomized factorial design was used with water salinity and quinoa genotypes as two factors. Quinoa seeds were subjected to salinity stress at 1, 10, 15, 20, 25, and 30 dS m −1 , their germination determined for two weeks, and seedling growth was evaluated through biomass production. Results showed that germination decreased significantly (by 60%) across all genotypes as salinity increased, with zero germination at 30 dS m −1 . All genotypes differed significantly across salinity levels, with percent germination ranging between 37-72%. Using hierarchical cluster analysis, 23GR, 130R, 124R, and 31P were identified as highly salt-tolerant genotypes at seed germination. Seedling biomass also decreased with increasing salinity, but genotypical differences were not as pronounced as at the germination stage. We conclude that salinity tolerance at germination and seedling growth stages is indeed a variable trait among selected quinoa genotypes.

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Physiological and biochemical markers for screening salt tolerant quinoa genotypes at early seedling stage

Cited by 21 publications

References 81 publications

Presowing seed treatment with glycine betaine confers NaCl tolerance in quinoa by modulating some physiological processes and antioxidant machinery

Presowing seed treatment with glycine betaine confers NaCl tolerance in quinoa by modulating some physiological processes and antioxidant machinery

Regulation of Reactive Oxygen Species and Antioxidant Defense in Plants under Salinity

Evaluation of quinoa genotypes for their salinity tolerance at germination and seedling stages

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