Mannitol Application Alleviates Boron Toxicity in Wheat Seedlings

Coşkun, Yasemin; Olgunsoy, Pınar; Karatas, Nihal; Bulut, Fatma; Yarar, Firdevs

doi:10.1080/00103624.2013.867054

Cited by 10 publications

(6 citation statements)

References 22 publications

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“…However, in our study, despite having a general detrimental effect on the SL of the studied accessions, a very few accessions (Ab2, Ac4, and Al1) could tolerate the highly toxic B supply and showed a significant increase in SL (Figure 3B). Though a few studies reported no effect of B toxicity on SL (Yau and Saxena, 1997;Brdar-Jokanovic, 2020), others reported a significant negative effect of high B on the SL of wheat cultivars (Coskun et al, 2014). These differences in the results of the RL and SL direct toward a major role of genotypic variation in response to B toxicity.…”

Section: Impact Of B Toxicity Stress On the Root-shoot Growth Parametersmentioning

confidence: 95%

Variability in Physiological Traits Reveals Boron Toxicity Tolerance in Aegilops Species

et al. 2021

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Boron (B) is an important micronutrient required for the normal growth and development of plants. However, its excess in the soil causes severe damage to plant tissues, which affects the final yield. Wheat, one of the main staple crops, has been reported to be largely affected by B toxicity stress in arid and semi-arid regions of the world. The prevalence of B toxicity stress can be addressed by utilizing wild wheat genotypes with a variant level of stress tolerance. Wild wheat relatives have been identified as a prominent source of several abiotic stress-tolerant genes. However, Aegilops species in the tertiary gene pool of wheat have not been well exploited as a source of B toxicity tolerance. This study explores the root and shoot growth, proline induction, and extent of lipid peroxidation in 19 Aegilops accessions comprising 6 different species and the B-tolerant check wheat cultivar Bolal 2973 grown under Control (3.1 μM B), toxic (1 mM B), and highly toxic (10 mM B) B stress treatment. B toxicity stress had a more decisive impact on growth parameters as compared to the malondialdehyde (MDA) and proline content. The obtained results suggested that even the genotypes with high shoot B (SB) accumulation can be tolerant to B toxicity stress, and the mechanism of B redistribution in leaves should be studied in detail. It has been proposed that the studied Aegilops accessions can be potentially used for genetically improving the B toxicity-tolerance trait due to a high level of variation in the response toward high B toxicity. Though a number of accessions showed suppression in the root and shoot growth, very few accessions with stress adaptive plasticity to B toxicity stress leading to an improvement of shoot growth parameters could be determined. The two accessions, Aegilops biuncialis accession TGB 026219 and Aegilops columnaris accession TGB 000107, were identified as the potential genotypes with B toxicity stress tolerance and can be utilized for developing a pre-breeding material in B tolerance-based breeding programs.

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Section: Impact Of B Toxicity Stress On the Root-shoot Growth Parametersmentioning

confidence: 95%

Variability in Physiological Traits Reveals Boron Toxicity Tolerance in Aegilops Species

et al. 2021

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“…However, 0.25 mM B treatment seemed to alleviate the reductions in root and shoot FW, shoot DW, root and shoot lengths resulted from drought stress by causing 42, 17, 26, 33 and 14 % increases, respectively, in comparison to 0.05 mM B treatment (control) plants. Growth reduction resulting from B toxicity has also been reported in barley (Karabal et al, 2003), tomato (Cervilla et al, 2007; and wheat (Coskun et al, 2014).…”

Section: Resultsmentioning

confidence: 88%

Oxidative stress responses in watermelon (Citrullus lanatus) as influenced by boron toxicity and drought

Hamurcu

Demiral

Hakkı

et al. 2015

Zemdirbyste-Agriculture

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This study aimed to investigate the effect of different boron (B) treatments on drought tolerance of watermelon plants. Drought tolerant Citrullus lanatus (Thunb.) Matsum. et Nakai genotype 'Kar 98' was grown in controlled greenhouse conditions hydroponically and exposed to drought stress by applying PEG 6000 (polyethylene glycol) in the presence of three boron dosages: 0.05, 0.25 and 1.25 mM. Growth parameters (fresh weight, dry weight and lengths of shoot and roots), leaf relative water content, boron accumulation, lipid peroxidation level and activities of superoxide dismutase (SOD), catalase (CAT) and glutathione reductase (GR) enzymes were determined as well as the accumulation of hydrogen peroxide (H 2 O 2 ) and hydroxyl (•OH)-scavenging activity were assayed. Increasing dosages of boron alone caused more severe growth reduction than combined with PEG 6000-induced drought stress. Induced drought stress caused less accumulation of boron in leaves and roots. B concentration of 1.25 mM caused lipid peroxidation in a reactive oxygen species-independent manner and drought stress-induced lipid peroxidation was alleviated by increasing B dosages. Induced glutathione reductase activity under the combination of 1.25 mM B and PEG 6000-induced drought stress seemed an important physiological response in 'Kar 98' plants against multiple stresses.

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“…For the determination of SWC, whole germinated seedlings were weighed before and after drying at 70°C for 24 h (Coskun et al., 2014; Ge et al., 2016).…”

Section: Methodsmentioning

confidence: 99%

“…For each treatment, GP, SVI, and SWC were calculated as follows: (Ali & Idris et al, 2015;Caruso et al, 2018;Ilori et al, 2012) Seeds were counted as normally germinated when the radicle extrusion was at least 3 mm (Almaghrabi, 2012). (Ali & Idris et al, 2015;Caruso et al, 2018) (Ge et al, 2016) For the determination of SWC, whole germinated seedlings were weighed before and after drying at 70°C for 24 h (Coskun et al, 2014;Ge et al, 2016).…”

Section: Germination and Seedlings Growth Parametersmentioning

confidence: 99%

Phenotypic variability for early drought stress resistance in tetraploid wheat accessions correlates with terminal drought performance

Poggi,

Corneti,

Aloisi

et al. 2024

J Agronomy Crop Science

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Durum wheat (Triticum durum Desf.) is a fundamental staple food for the countries of the Mediterranean basin. Climate change is predicted to cause a trend of increasing drought severity in this region in the near future, necessitating the improvement of durum wheat's resilience to drought stress. Using polyethylene glycol to simulate water scarcity, early vigour parameters in germinating seeds are quickly, easily and affordably assessed. Many screenings, however, only consider the seedling stage; consequently, genotypes identified as promising for cultivation in drought scenarios, may not show such features if drought appears in later phenological phases, as happens in Mediterranean climatic areas, generally prone to terminal drought. The correlation between drought stress resistance during the seedling stage (early vigour) and later stages in the life cycle is elusive due to the lack of scientific efforts. Here we used polyethylene glycol screening to classify fifty‐five tetraploid wheat accessions into three clusters (susceptible, medium resistant and highly resistant to drought), based on morpho‐physiological traits. These accessions included durum wheat cultivars and landraces, as well as ancestors like durum emmer wheat and wild emmer wheat. The results of the screenings were combined with subsequent pot experiments using nine randomly selected accessions, imposing terminal drought, and evaluating their performance. Principal component analysis was performed on data for net photosynthesis, stomatal conductance, transpiration and grain yield. Notably, the genotypes that performed best in the pot experiments were also those that performed well in the screening. Highly resistant candidates had in fact higher physiological and performance parameters than susceptible candidates. In summary, polyethylene glycol screening of germinating seeds resulted to be suitable to predictively evaluate drought resistance in tetraploid wheat accessions under terminal drought conditions, typical of Mediterranean climate zones. The reported data, thus evidence of how this inexpensive and simple method might be efficiently applied for large‐scale phenotyping.

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Mannitol Application Alleviates Boron Toxicity in Wheat Seedlings

Cited by 10 publications

References 22 publications

Variability in Physiological Traits Reveals Boron Toxicity Tolerance in Aegilops Species

Variability in Physiological Traits Reveals Boron Toxicity Tolerance in Aegilops Species

Oxidative stress responses in watermelon (Citrullus lanatus) as influenced by boron toxicity and drought

Phenotypic variability for early drought stress resistance in tetraploid wheat accessions correlates with terminal drought performance

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