ABA and proline accumulation in leaves and roots of wild (Hordeum spontaneum) and cultivated (Hordeum vulgare ‘Maresi’) barley genotypes under water deficit conditions

Bandurska, Hanna; Stroiński, Andrzej

doi:10.1007/s11738-003-0036-x

Cited by 34 publications

(27 citation statements)

References 29 publications

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“…A significant role in this respect is played by abscisic acid (Chaves et al 2003). This is confirmed by the results of our previous investigations, in which we observed a rapid increase of ABA level under the influence of WD in roots and next in leaves of barley, which was correlated with a high RWC level in leaves (Bandurska and Stroiński 2003). However, closure of stomata may lead to a reduced intensity of photosynthesis and, as a consequence, growth inhibition (Farooq et al 2009).…”

Section: Discussionsupporting

confidence: 85%

Response of barley seedlings to water deficit and enhanced UV-B irradiation acting alone and in combination

2011

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Responses of barley seedlings to water deficit (WD) induced by polyethylene glycol (PEG 6000) and ultraviolet (UV-B; 280-320 nm) radiation and their interaction (UV-B ? WD) were examined. A decrease in dry matter yield and water content of leaves and roots was observed following application of WD and UV-B ? WD, while no changes were found after treating barley plants with UV-B. Proline content was increased in leaves under WD conditions and UV-B ? WD. In contrast, UV-B treatment had no effect on the accumulation of proline in leaves of barley plants. Changes in root proline content showed a varied response: WD induced an increase in the level of this amino acid, while UV-B as well as UV-B ? WD suppressed root proline content. The lipid peroxidation product malondialdehyde (MDA) was increased in leaves under WD and UV-B ? WD stresses. Root MDA content increased in WD-stressed plants, but it decreased in the case of combined application of both stresses. The applied stress factors operated in a variable manner on phenylpropanoid metabolism. Phenylalanine ammonialyase (PAL) activity in leaves and roots was stimulated after exposure to WD and application of UV-B ? WD stresses, while UV-B stress did not affect its activity. On the other hand, UV-B treatment enhanced the activity of 4:coumarate-CoA ligase (4CL) in leaves and this enhancement was positively correlated with the accumulation of anthocyanins and flavonols. However, the combined application of WD and UV-B reduced the positive effect of UV-B on the accumulation of these compounds and the activity of 4CL. Surprisingly, anthocyanins and flavonols were not detected in roots of examined barley seedlings despite increased 4CL activity. The results suggest that UV-B-induced activation of 4CL as well as accumulation of anthocyanin and flavonols in leaves is beneficial for the response to this stress factor. On the other hand, WD-induced reduction of the effect of UV-B on 4CL activity and the contents of anthocyanin and flavonol might be a cause of membrane damage in UV-B-and WDstressed plants. In addition, conversely to what could be expected, the UV-B effect was perceived by the waterstressed roots, which exhibited reduced lipid peroxidation (MDA) and proline accumulation in WD-stressed plants exposed to UV-B.

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Section: Discussionsupporting

confidence: 85%

Response of barley seedlings to water deficit and enhanced UV-B irradiation acting alone and in combination

2011

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“…The contents of hydrogen peroxide were measured according to Patterson et al (1984). The isolation and estimation of ABA by highperformance liquid chromatography (HPLC) were performed according to Bandurska and Stroinski (2003).…”

Section: Methodsmentioning

confidence: 99%

Effect of salicylic acid pretreatment on cadmium toxicity in wheat

Moussa¹,

El-Gamal²

2010

Biologia plant.

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Cadmium (100, 400 and 1000 µM CdCl 2 ) treatments resulted in the inhibition of root dry biomass, root elongation and increased Cd accumulation in wheat (Triticum aestivum L.) roots. Further, these treatments decreased relative water content, chlorophyll content, 14 CO 2 -fixation, activities of phosphoenolpyruvate carboxylase and ribulose-1,5-bisphosphate carboxylase and abscisic acid content while increased malondialdehyde, hydrogen peroxide and free proline contents. Chloroplast and root ultrastructure was also changed. Pretreatment of seeds with SA (500 µM) for 20 h resulted in amelioration of these effects.

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“…Number of degree of freedom (df) for critical values of (r) were for maize 11 and for triticale 9 NS, r-Correlation coefficient not significant *, ** r 00 -Correlation coefficient significant at the 0.05 or 0.01 level, respectively Acta Physiol Plant (2013) 35:549-565 561 Table 8 Correlation coefficients (r) among physiological stress traits in maize and triticale genotypes On the other hand, the effectiveness of the evaluation of tolerance based on the measurement of different parameters of leaf gaseous exchange and the content of various metabolites, including proline, has not been definitely confirmed. (Hanson and Nelson 1985;Farquhar et al 1993;Dubey 1997;Bandurska and Stroiński 2003). The maize and triticale genotypes used in these experiments show a relatively wide range of drought tolerance.…”

Section: Relative Loss Of Intracellular Electrolytes From Leaf Tissuementioning

confidence: 99%

The relations between drought susceptibility index based on grain yield (DSIGY) and key physiological seedling traits in maize and triticale genotypes

et al. 2012

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The physiological reasons for the differences in sensitivity of C 3 and C 4 plant species to environmental stresses have not been thoroughly explained. In this study the effects of drought stress on the growth and selected physiological traits were examined in the seedlings of 13 single cross maize (C 4 plant) hybrids and 11 spring triticale (C 3 plant) breeding lines and varieties differing in drought sensitivity. For plants in the seedling stage the results demonstrated a genetic variation in dry matter accumulation of shoots and roots (DW S , DW R ), number (N) and length (L) of particular components (seminal, seminal adventitious, nodal) of the root system, membrane injury by soil drought (LI D ), osmotic and high temperature stress (LI OS , LI HT ), water potential (w), water loss (WL), grain germination in osmotic stress (FG, PI), and seedling survival (SS). Seedlings grown under moderate soil drought showed a decrease in dry matter of the top parts and roots and a decrease in the length of seminal, seminal adventitious and nodal roots in comparison to seedlings grown in control conditions. The observed harmful effects of drought stress were more distinct in drought sensitive genotypes. Used in this paper drought susceptibility indexes (DSI GY ) were calculated in other experiment by determining the changes in grain yield (GY) under two soil moisture levels (irrigated and drought). The variation of DSI GY for maize ranges from 0.381 to 0.650 and for triticale from 0.354 to 0.578. The correlations between DSI GY and laboratory tests (LI, FG, SS) confirmed that they are good indicators of drought tolerance in plants. The highest values of genetic variation were observed in LI, DW S , SS and WL and the lowest in the measurements of w FG, PI, L S , L SA and L N . The correlation coefficients between LI OS and LI HT tests were, in most of the considered cases, statistically significant, which indicates that in maize and triticale the mechanisms of membrane injury caused by simulated drought or high temperature are physiologically similar. It can be concluded that an approach to the breeding of maize and triticale for drought tolerance using these tests can be implemented on the basis of separate selection for each trait or for all of them simultaneously. In that case, it would be necessary to determine the importance of the trait in relation to growth phase, drought timing and level, as well as its associations with morphological traits contributing to drought tolerance. The obtained values of the correlation coefficient between laboratory tests suggest that the same physiological traits may be applied as selection criteria in drought tolerance of maize and triticale genotypes.

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ABA and proline accumulation in leaves and roots of wild (Hordeum spontaneum) and cultivated (Hordeum vulgare ‘Maresi’) barley genotypes under water deficit conditions

Cited by 34 publications

References 29 publications

Response of barley seedlings to water deficit and enhanced UV-B irradiation acting alone and in combination

Response of barley seedlings to water deficit and enhanced UV-B irradiation acting alone and in combination

Effect of salicylic acid pretreatment on cadmium toxicity in wheat

The relations between drought susceptibility index based on grain yield (DSIGY) and key physiological seedling traits in maize and triticale genotypes

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