PEG-simulated drought stress and spike in vitro culture are used to study the impact of water stress on barley malt quality

Wu, Xingxin; Zeng, Fanrong; Zhang, Guoping

doi:10.1007/s10725-016-0201-z

Cited by 9 publications

(8 citation statements)

References 36 publications

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“…Thus, it may be understandable that the faster grain filling process causes the lower β-glucan content. Indeed, our results revealed that the grain β-glucan content in wild barley (XZ147 and XZ5) was decreased much more than that in cultivated barley (Tr and TL43) when subjected to water stress ( Figure 1B ), completely coinciding with our previous results that the grain filling process of wild barley (XZ147 and XZ5) was much faster than the cultivated barley (Tr and TL43) after onset of drought stress ( Wu et al, 2017 ). Furthermore, it has been also reported that the synthesis of β-glucan in barley grains was largely controlled by the genes GSL1 , GSL4 , and GSL7 ( Schober et al, 2009 ).…”

Section: Discussionsupporting

confidence: 91%

“…In this study, the available sucrose transported to grains was dramatically increased under water stress for all barley genotypes, with XZ147 having the most increase ( Figures 2 , 5 ). Thanks to its much quicker grain-filling process under water stress ( Wu et al, 2017 ), XZ147 remained relatively smaller change in grain weight than other genotypes ( Figure 1A ).…”

Section: Discussionmentioning

confidence: 98%

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Metabolite Profiling of Barley Grains Subjected to Water Stress: To Explain the Genotypic Difference in Drought-Induced Impacts on Malting Quality

Wu¹,

Cai²,

Zhang³

et al. 2017

Front. Plant Sci.

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Grain weight and protein content will be reduced and increased, respectively, when barley is subjected to water stress after anthesis, consequently deteriorating the malt quality. However, such adverse impact of water stress differs greatly among barley genotypes. In this study, two Tibetan wild barley accessions and two cultivated varieties differing in water stress tolerance were used to investigate the genotypic difference in metabolic profiles during grain-filling stage under drought condition. Totally, 71 differently accumulated metabolites were identified, including organic acids, amino acids/amines, and sugars/sugar alcohols. Their relative contents were significantly affected by water stress for all genotypes and differed distinctly between the wild and cultivated barleys. The principal component analysis of metabolites indicated that the Tibetan wild barley XZ147 possessed a unique response to water stress. When subjected to water stress, the wild barley XZ147 showed the most increase of β-amylase activity among the four genotypes, as a result of its higher lysine content, less indole-3-acetic acid (IAA) biosynthesis, more stable H2O2 homeostasis, and more up-regulation of BMY1 gene. On the other hand, XZ147 had the most reduction of β-glucan content under water stress than the other genotypes, which could be explained by the faster grain filling process and the less expression of β-glucan synthase gene GSL7. All these results indicated a great potential for XZ147 in barley breeding for improving water stress tolerance.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 98%

Metabolite Profiling of Barley Grains Subjected to Water Stress: To Explain the Genotypic Difference in Drought-Induced Impacts on Malting Quality

Wu¹,

Cai²,

Zhang³

et al. 2017

Front. Plant Sci.

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“…This concentration was selected based on our preliminary tests and all treatments were sprayed as a volume that saturated the canopy (approximately 100 mL per plot). After pre-treatment, the plants were subjected to cold stress (4 °C), high salt (300 mM NaCl) and drought stress (200 g·L −1 PEG) [53,54]. Leaf samples were harvested at 0, 12, 24 and 48 h after abiotic stress treatment from each group, immediately frozen in liquid nitrogen and stored at −80 °C for subsequent analysis of physiological indicators and gene expression.…”

Section: Methodsmentioning

confidence: 99%

Exogenous Melatonin Enhances Cold, Salt and Drought Stress Tolerance by Improving Antioxidant Defense in Tea Plant (Camellia sinensis (L.) O. Kuntze)

et al. 2019

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Melatonin is a biological hormone that plays crucial roles in stress tolerance. In this study, we investigated the effect of exogenous melatonin on abiotic stress in the tea plant. Under cold, salt and drought stress, increasing malondialdehyde levels and decreasing maximum photochemical efficiency of PSII were observed in tea leaves. Meanwhile, the levels of reactive oxygen species (ROS) increased significantly under abiotic stress. Interestingly, pretreatment with melatonin on leaves alleviated ROS burst, decreased malondialdehyde levels and maintain high photosynthetic efficiency. Moreover, 100 μM melatonin-pretreated tea plants showed high levels of glutathione and ascorbic acid and increased the activities of superoxide dismutase, peroxidase, catalase and ascorbate peroxidase under abiotic stress. Notably, melatonin treatments can positively up-regulate the genes (CsSOD, CsPOD, CsCAT and CsAPX) expression of antioxidant enzyme biosynthesis. Taken together, our results confirmed that melatonin protects tea plants against abiotic stress-induced damages through detoxifying ROS and regulating antioxidant systems.

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“…The ABTS working solution was made by diluting ABTS solution to an absorbance of 0.7 ± 0.01 at 734 nm using acetate buffer. Then, 3 mL of the working solution was mixed with 2 mL of each sample or standard solution (5,10,15,20, and 25 μg/mL ascorbic acid). The absorbance was read at 734 nm after standing for 30 min at room temperature.…”

Section: Methodsmentioning

confidence: 99%

“…Barley sprouts are abound with soluble fiber components, especially β-glucan, and have a lot of beneficial effects on human beings; hence, it draws much attention. 4,15,51 β-Glucan could be a major part of the polysaccharides. 6 In the present study, the TSP contents (19.75 ± 0.19 to 6.83 ± 0.08 mg GE/g) of all of the UVtreated groups decreased dramatically with the prolonging of growth time, which was in consistence with β-glucan in previous studies.…”

Section: Total Flavonoids (Tf)mentioning

confidence: 99%

Comprehensive Evaluation of the Effect of Ultraviolet Stress on Functional Phytochemicals of Hulless Barley (Qingke) Grass in Different Growth Times at Vegetative Stage

et al. 2020

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The present study was executed to analyze the functional phytochemicals of hulless barley grass grown under different intensities of ultraviolet stress. The wheat seedlings were imposed to 0.5, 1.0, 1.5, 2.0, and 2.5 h ultraviolet radiation and harvested in different times at vegetative stage. Specifically, the contents of total polyphenols, total flavonoids, total triterpenes, total polysaccharides, proanthocyanidins, and chlorophyll were determined and antioxidants capacity was evaluated by OH• and 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) scavenging ability. A mathematical model (Technique for Order Preference by Similarity to Ideal Solution, TOPSIS) was also employed for the comprehensive evaluation of functional components of hulless barley grass at different growth stages. The results showed that the UV stress could efficiently improve/preserve the contents of total polyphenols, total flavonoids, total triterpenes, total polysaccharides, proanthocyanidins, chlorophyll a, chlorophyll b, and total chlorophyll, as well as the OH• and ABTS scavenging capacity. TOPSIS evaluation revealed that the highest phytochemical contents were yield on the 15th day under 1.0 h ultraviolet treatment.

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PEG-simulated drought stress and spike in vitro culture are used to study the impact of water stress on barley malt quality

Cited by 9 publications

References 36 publications

Metabolite Profiling of Barley Grains Subjected to Water Stress: To Explain the Genotypic Difference in Drought-Induced Impacts on Malting Quality

Metabolite Profiling of Barley Grains Subjected to Water Stress: To Explain the Genotypic Difference in Drought-Induced Impacts on Malting Quality

Exogenous Melatonin Enhances Cold, Salt and Drought Stress Tolerance by Improving Antioxidant Defense in Tea Plant (Camellia sinensis (L.) O. Kuntze)

Comprehensive Evaluation of the Effect of Ultraviolet Stress on Functional Phytochemicals of Hulless Barley (Qingke) Grass in Different Growth Times at Vegetative Stage

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