Investigation on the relationship of proline with wheat anti-drought under soil water deficits

Shao, Hongbo; Chen, Xiaoyan; Chu, Li-Ye; Zhao, Xining; Wu, Gang; Yang, Yuan; Zhao, Chengcheng; Hu, Zhongliang

doi:10.1016/j.colsurfb.2006.08.008

Cited by 114 publications

(50 citation statements)

References 60 publications

(133 reference statements)

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“…This was confirmed in our experiment, where the applied concentration of PEG caused a higher accumulation of proline under D2 and D3 than under D1 treatment and in the resistant CS than in the susceptible SQ1 genotype. The accumulation of proline serves as a depot for energy to regulate redox potentials (Hong-Boa et al 2006;Saradhi and Saradhi 1991), and functions as a hydroxyl radical scavenger (Smirnoff and Cumbes 1989). Our results showed that concentration of soluble carbohydrates was higher after D2 and D3 treatments in comparison to the control.…”

Section: Discussionsupporting

confidence: 65%

Impact of osmotic stress on physiological and biochemical characteristics in drought-susceptible and drought-resistant wheat genotypes

et al. 2012

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In this study, the seedlings of two wheat cultivars were used: drought-resistant Chinese Spring (CS) and drought-susceptible (SQ1). Seedlings were subjected to osmotic stress in order to assess the differences in response to drought stress between resistant and susceptible genotype. The aim of the experiment was to evaluate the changes in physiological and biochemical characteristics and to establish the optimum osmotic stress level in which differences in drought resistance between the genotypes could be revealed. Plants were subjected to osmotic stress by supplementing the root medium with three concentrations of PEG 6000. Seedlings were grown for 21 days in control conditions and then the plants were subjected to osmotic stress for 7 days by supplementing the root medium with three concentrations of PEG 6000 (D1, D2, D3) applied in two steps: during the first 3 days of treatment -0.50, -0.75 and -1.00 and next -0.75, -1.25 and -1.5 MPa, respectively. Measurements of gas exchange parameters, chlorophyll content, height of seedlings, length of root, leaf and root water content, leaf osmotic potential, lipid peroxidation, and contents of soluble carbohydrates and proline were taken. The results highlighted statistically significant differences in most traits for treatment D2 and emphasized that these conditions were optimum for expressing differences in the responses to osmotic stress between SQ1 and CS wheat genotypes. The level of osmotic stress defined in this study as most suitable for differentiating drought resistance of wheat genotypes will be used in further research for genetic characterization of this trait in wheat through QTL analysis of mapping population of doubled haploid lines derived from CS and SQ1.

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Section: Discussionsupporting

confidence: 65%

Impact of osmotic stress on physiological and biochemical characteristics in drought-susceptible and drought-resistant wheat genotypes

et al. 2012

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“…Therefore, accumulation of osmolytes is a prerequisite for osmotic adjustment of all organisms under DS. Physiological studies have shown that osmolyte accumulation was dependent on water status, physiological stage of crop growth and cultivar (Grumet and Hanson 1986;Qifu et al 2004;Zhu et al 2005;Shao et al 2006). Glycinebetaine (GB) is known to be an effective osmoprotectant which accumulates in certain species under DS.…”

Section: Introductionmentioning

confidence: 99%

Differential plant growth and osmotic effects of two maize (Zea mays L.) cultivars to exogenous glycinebetaine application under drought stress

2009

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We investigated the effects of exogenous glycinebetaine (GB) and drought stress (DS) on grain yield (GY) and production of dry matter (DM) and osmolytes in two maize (Zea mays L.) cultivars i.e. Shaandan 9 (S 9 ) and Shaandan 911 (S 911 ) during the entire growing period. Drought stress substantially reduced DM and GY but increased free proline, endogenous GB, soluble sugar and K ? concentrations in leaves of both cultivars. The DM production, GY, drought index (DI) and concentrations of these osmolytes were greater for S 9 than those for S 911 under DS. The significant differences in these parameters suggested that S 9 was more drought-tolerant as compared to S 911 . Additionally, foliar application of GB increased the concentrations of all osmolytes measured, DM and GY of both cultivars under DS. These positive responses of exogenous GB spray were more pronounced in S 911 as compared to those in S 9 . Further correlation analysis involving a number of parameters indicated that maize production was tighterly correlated with accumulation of the osmolytes measured during DS rather than wellwatered controls. Accordingly, this study demonstrated the notion of an anti-drought role of exogenous GB by osmoregulation under DS, particularly in this drought sensitive cultivar. Thus, exogenous GB application might be firstly used with drought sensitive species/cultivars when exposed to DS.

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“…Drought is a worldwide problem that adversely affects yield and crop quality (Chartzoulakis et al, 1999;Chartzoulakis et al, 2002;Souza et al, 2005;Hong-Bo et al, 2006). Reductions in the soil moisture as a result of withholding water lead straightly to changes in the plants physical environment, subsequently affecting physiological and biochemical processes (Sarker et al, 2005;Sircelj et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…potassium, soluble sugar, amino acids, proline and betaine. These molecules, which have low molecular weights, are important plant physiological indicators used to evaluate the ability to adjust osmotically and the drought-tolerance of many species and genotypes (Hong-Bo et al, 2006, Farooq et al, 2009). The main function of organic solutes is relative to protein stabilization, protein-complex and membranes when plants are submitted to environmental stresses (Bohnert and Shen, 1999).…”

Section: Introductionmentioning

confidence: 99%

Water relations and organic solutes production in four umbu tree (Spondias tuberosa) genotypes under intermittent drought

Silva

Nogueira

Vale

et al. 2009

Braz. J. Plant Physiol.

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In order to evaluate changes in leaf water potential (ψw) and solute accumulation induced by intermittent drought, an research was performed under greenhouse conditions using four umbu tree genotypes (GBU 44, GBU 48, GBU 50 and GBU 68) and two water treatments (control and stressed by withholding water), with four replicates. The ψw was measured in four-hour intervals during a 24-hour period at the first stomatal closure and at the end of the experimental period. Carbohydrates, amino acids, protein and proline contents were also evaluated in leaves and roots. Significant differences were found in most of the studied parameters. The lower ψw hour was between 800 h and 1200 h. GBU 50 reduced significantly ψw in stressed plants at 800 h, while control plants reduced at 1200 h . GBU 68 presented the higher ψw. The extending of the stress induced reductions to carbohydrates in the leaves of all genotypes, increases in amino acids to GBU 44 and 48, and reductions of 40% and 43% to GBU 50 and 68, respectively; results also showed alterations in proline content. In the roots, increases in carbohydrates were observed only in GBU 48. Alterations in amino acids, protein, and proline were verified. Umbu trees presented isohydric behavior maintaining high leaf water potential and a great variability in organic solutes accumulation in response to drought with marked differences among the genotypes.

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Investigation on the relationship of proline with wheat anti-drought under soil water deficits

Cited by 114 publications

References 60 publications

Impact of osmotic stress on physiological and biochemical characteristics in drought-susceptible and drought-resistant wheat genotypes

Impact of osmotic stress on physiological and biochemical characteristics in drought-susceptible and drought-resistant wheat genotypes

Differential plant growth and osmotic effects of two maize (Zea mays L.) cultivars to exogenous glycinebetaine application under drought stress

Water relations and organic solutes production in four umbu tree (Spondias tuberosa) genotypes under intermittent drought

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