Effects of water deficit and rehydration on the polar lipid and membranes resistance leaves of Phaseolus vulgaris L. cv. Pérola

Júnior, Raimundo Rômulo Martins; Oliveira, Micheline Soares Costa; Baccache, Maria Ary; Paula, Fernando Monteiro de

doi:10.1590/s1516-89132008000200016

Cited by 20 publications

(2 citation statements)

References 26 publications

(25 reference statements)

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“…Drought stress also induced a decrease in the proportion of unsaturated fatty acids in the total lipids content (El Kaoua et al, 2006;Martins Júnior et al, 2008). The percentage of unsaturation in rolled leaves of Ctenanthe setosa subjected to water-deficit stress was higher than in control leaves (Ayaz et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

Impact of UV-B on drought- or cadmium-induced changes in the fatty acid composition of membrane lipid fractions in wheat

Gondor

Szalai

Kovács

et al. 2014

Ecotoxicology and Environmental Safety

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Several reports have demonstrated the direct and indirect effects of UV-B radiation, an integral component of sunlight, on the plant growth and metabolism of various plant species, including a range of morphological, physiological and biochemical changes (Zlatev et al., 2012). However, as well as being a damaging agent UV-B also has an important role as a regulatory signal. The perception of and responses to UV-B by plants stimulate protective mechanisms, including the accumulation of UV-absorbing phenolic compounds and the modification of the biochemical composition (Jenkins, 2008). Under natural conditions plants are often subjected to multiple stress factors, so the impact of any particular stress may be aggravated or attenuated by the simultaneous action of another stressor. In a previous study it was demonstrated that UV-B radiation may have either a positive or negative impact under the same conditions in wheat, depending on the type of secondary abiotic stress factor: Cd or drought (Kovács et al., 2014). Supplemental UV-B light prevented the wilting and leaf rolling induced by PEG treatment. In contrast, combined UV-B and Cd treatment resulted in pronounced oxidative stress, which was manifested in the further enhancement of the leaf MDA content, root antioxidant enzyme activities and also root polyamine content compared to the effect of single stress factors, Cd or UV-B radiation (Kovács et al., 2014).The ability to adjust membrane lipid fluidity by changing the level of unsaturated fatty acids is a feature of stress-tolerant plants, resulting in an environment suitable for the function of critical integral proteins. Changes have been described in the total lipid content, in the saturation of the total lipids, in the ratio of the membrane lipid fractions, and in the fatty acid composition of individual membrane fractions during single abiotic stresses, such as drought (Zhong et al., 2011;Filek et al., 2012) or heavy metal (Pál et al., 2007;Bernat et al., 2014). Nevertheless, no reports have yet been published on the combined effect of either drought or Cd treatment and UV-B radiation on the fatty acid composition of the individual membrane fractions in wheat plants. Impact of UV-B on drought-or cadmium-induced changes in the fatty acid composition of membrane lipid fractions in wheat AbstractUV-B radiation may have either a positive or negative impact under the same conditions in wheat, depending on the type of secondary abiotic stressor: Cd or drought. Supplemental UV-B prevented the wilting and leaf rolling induced by PEG treatment. In contrast, combined UV-B and Cd treatment resulted in pronounced oxidative stress. The opposite effect of UV-B radiation in the case of drought or cadmium stress may be related to the alteration induced in the fatty acid composition. UV-B caused changes in the unsaturation of leaf phosphatidylglycerol fractions, and the accumulation of flavonoid in the leaves may prevent the stress induced by subsequent drought treatment. However it resulted in pronounced injury despite ...

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Section: Discussionmentioning

confidence: 99%

Impact of UV-B on drought- or cadmium-induced changes in the fatty acid composition of membrane lipid fractions in wheat

Gondor

Szalai

Kovács

et al. 2014

Ecotoxicology and Environmental Safety

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“…An increased fraction of phospholipids, especially PC and an increased degree of fatty acid unsaturation was detected under such conditions (Quartacci et al 1995;Aziz and Larher 1998;Wu et al 2005;Toumi et al 2008;Filek et al 2012). However, registered modifications of the lipids composition were dependent on the tolerance of plant genotypes (genetically engineered) to osmotic stress thus changes of fatty acid saturation in the opposite direction were also found (Martins et al 2008;Filek et al 2012). Similarly, alterations of lipid membranes induced by low temperature were correlated with genetically modified plant resistance and/or with their acclimation to cold and frost.…”

Section: Tablementioning

confidence: 99%

Physicochemical techniques in description of interactions in model and native plant membranes under stressful conditions and in physiological processes

Rudolphi-Skórska

Sieprawska

2015

Acta Physiol Plant

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The diversity of chemical structure of lipids present in the cell membranes, concerning both a hydrophilic (polarity and charge) and hydrophobic (chain length and unsaturation of fatty acids residues) parts, assists in providing suitable physical and chemical properties for the course of multiple reaction within the membrane. This review presents the results of the changes in the lipid composition of native membranes of plant cells under stress conditions and during developmental processes. It also discussed the use of lipids to create model systems which allow for interpretation of specificity of reactions taking place in the membrane fragments. The spontaneous formation by lipids closed spherical structures (bi-layers) in an aqueous medium, and monolayers at the water/air interface creates a convenient model system for the native membranes. The review focuses on the techniques of electrokinetic potential (zeta potential) measurements and Langmuir monolayers' studies. The first gives the possibility to conclude about the modification of the polar part of the membranes, the second allows to determine their structural properties (fluidity, stiffness). The relatively rapid modification of the lipid composition under stress and during the course of developmental processes to ensure the optimal functions of membranes and organelles includes the changes of hydrophobic/hydrophilic character of lipid, as an important factor influencing the course of multiple reactions in cells. Understanding the physicochemical properties of lipids that accompany these processes may contribute to the correct description of the functionality of the cells under these conditions.

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Wheat

Huseynova

Allahverdiyev²,

Babayev

et al. 2016

Water Stress and Crop Plants

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Effects of water deficit and rehydration on the polar lipid and membranes resistance leaves of Phaseolus vulgaris L. cv. Pérola

Abstract: ABSTRACT

Cited by 20 publications

References 26 publications

Impact of UV-B on drought- or cadmium-induced changes in the fatty acid composition of membrane lipid fractions in wheat

Impact of UV-B on drought- or cadmium-induced changes in the fatty acid composition of membrane lipid fractions in wheat

Physicochemical techniques in description of interactions in model and native plant membranes under stressful conditions and in physiological processes

Wheat

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