Correlations between the thermal stability of chloroplast (thylakoid) membranes and the composition and fluidity of their polar lipids upon acclimation of the higher plant, Nerium oleander, to growth temperature

Raison, John K.; Roberts, Justin K. M.; Berry, Joseph A.

doi:10.1016/0005-2736(82)90597-1

Cited by 175 publications

(119 citation statements)

References 22 publications

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“…However, in the field, desert species did have greater realized photosynthetic thermotolerance on aver age than coastal species. Our study concurs with other studies indicating that plant species have a large capacity for plastic acclima tion of photosynthetic thermotolerance (Seemann et al 1979(Seemann et al , 1986Berry and Bjorkman 1980;Raison et al 1982;Downton et al 1984). Seven out of eight species were significantly different for T S20 and five out of eight were significantly different for T 50 and T between max common environment and field measurements.…”

Section: Discussionsupporting

confidence: 92%

“…The mag nitude of plasticity within a species was greater than the magnitude of evolved differences between the coastal and desert congeners. Others have reported even greater plasticity (Seemann et al 1979(Seemann et al , 1986Raison et al 1982;Downton et al 1984). If we were able to acclimate plants to a number of different common environments or make measurements in the field on several occasions, we may have found an even greater range of photosynthetic ther mal acclimation.…”

Section: Discussionmentioning

confidence: 80%

“…Increased fluorescence at high temperatures is caused by a disrup tion of electron transport, which leaves a greater propor tion of excited electrons to decay (Schreiber and Armond 1978;Bukhov et al 1990;Yamane et al 2000). In creased membrane fluidity (Raison et al 1982), the dissociation of primary electron acceptors Q A and Q B (Bilger et al 1984;Bukhov et al 1990), and the separa tion of light harvesting complex II from the oxygen evolving complex of photosystem II (Yamane et al 1997) are all thought to contribute to increased fluores cence at high temperatures. To compare leaves, the in Critical temperature of T-F o , calculated by intersecting a line modeled on the slow rise phase of the curve, with a line modeled on the fast rise phase.…”

Section: Introductionmentioning

confidence: 99%

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An ecological and evolutionary analysis of photosynthetic thermotolerance using the temperature-dependent increase in fluorescence

2002

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The hypothesis that species inhabiting warmer regions have greater photosynthetic tolerance of high temperatures was tested using the temperature-dependent increase in fluorescence (T-F o ). Congeneric species pairs of Atriplex, Salvia, Encelia, and Eriogonum with desert versus coastal distributions were studied in a common environment and in the field. In addition, 21 species with contrasting microclimate distributions were studied at a field site in a northern California chaparral community. The average July maximum temperature within the cur rent distributions of species was quantified using a geo graphic information system. Four parameters (T crit , T S20 , T 50 , and T max ) of the T-F o response were used to quantify photosynthetic thermotolerance. In the common environ ment, only the desert Atriplex species was significantly greater for all T-F o parameters when compared to its coastal congener. In the field, desert species had signifi cantly greater T crit , T S20 , T 50 , and T max when compared to coastal species. The magnitude of variation between spe cies and between genera was similar in the common en vironment and the field. However, T crit , T S20 , T 50 and T max were all significantly greater when measured in the field. There was no relationship between T-F o parame ters and the microclimate distribution of the 21 species at the chaparral field site. In addition, T-F o parameters for all 35 species were not correlated with the average July maximum temperature within the species ranges. How ever, there was a significant negative correlation be tween the average annual amount of precipitation inside species' ranges and T S20 . Our results show that photo synthetic thermotolerance is (1) significantly different between genera and species, (2) highly plastic, (3) not necessarily greater for species with warm climate distributions when measured in a common environment, but (4) significantly greater overall for desert species compared to coastal species when measured in the field.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

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An ecological and evolutionary analysis of photosynthetic thermotolerance using the temperature-dependent increase in fluorescence

2002

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“…The importance of membrane fluidity is clearly evident in respect to plant response to changes of environmental conditions. Changes of lipid saturation level inevitably reflect membrane fluidity, which is well-characterized phenomenon of plant and algal acclimation to temperature and light conditions (Raison et al, 1982;Klyachko-Gurvich et al, 1999). To date, a number of studies have been reported on the influence of the degree of fatty acid unsaturation on the extent of low temperature photoinhibition of some cyanobacteria (Kanavero et al,.…”

Section: Introductionmentioning

confidence: 99%

Response of isolated thylakoid membranes with altered fluidity to short term heat stress

Velitchkova

Lazarova

Popova

2009

Physiol Mol Biol Plants

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The effect of alterations of lipid phase order of thylakoid membranes on the thermosensitivity of photosystem I (PS I) and photosystem II (PS II) was studied. Plant sterols stigmasterol and cholesterol were applied to decrease the fluidity in isolated membranes. After sterol treatment, a decrease of the temperature of 50 % inhibition of PSII activity was observed. Heat stressinduced stimulation of PSI-mediated electron transport rate was registered for control, but not for sterol-treated membranes. Effect of altered lipid order on oxygen evolving complex was evaluated by means of flash oxygen yields revealing changes in the stoichiometry of PSII α and PSII β centers. The effect of sterol incorporation on the changes in the thermotropic behavior of the main pigment-protein complexes was studied by differential scanning calorimetry (DSC). DSC traces of control thylakoids in the temperature range 20-98 o C exhibited several irreversible endothermic transitions. Incorporation of cholesterol and stigmasterol results in superimposition of the transitions and only two main bands could be resolved. While high temperature band peaks at the same temperature after treatment with both sterols, the band that combines low temperature transitions shows different melting temperature (T m ) : 70 o C for stigmasterol-and 65 0 C for cholesterol-treated membranes. The data presented here emphasise the crucial role of lipid order for the response of thylakoids to high temperatures, mediated not only by changes in the fluidity of bulk lipid phase as result of sterol incorporation but also by changes in the thermotropic properties of pigment-protein complexes.

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“…

As a complementary approach to this general problem, we have isolated a number of mutants of Arabidopsis thaliana with reduced levels of unsaturation of their leaf lipids (5, 10-12, 17, 18).

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mentioning

confidence: 99%

Enhanced Thermal Tolerance in a Mutant of Arabidopsis Deficient in Palmitic Acid Unsaturation

Kunst¹,

Browse²,

Somerville³

1989

Plant Physiol.

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(14), lipase treatment of chloroplast membranes (23), hydrogenation of unsaturated fatty acids in membrane lipids (20, 27, 28), correlation of events during chloroplast development (7, 13), and analysis of environmental effects on membrane composition, structure, and function (3,21,22). However, in no case, in plants or in animals, has a simple direct relationship been demonstrated between the physical properties of membrane lipids and cellular function (20, 26).As a complementary approach to this general problem, we have isolated a number of mutants of Arabidopsis thaliana with reduced levels of unsaturation of their leaf lipids (5, 10-12, 17, 18). Previous studies of several of these mutants has indicated that photosynthetic electron transport appears to be relatively insensitive to changes in lipid composition (10, 1 1, 17, 18). By contrast, several of the mutants exhibit significant changes in chloroplast ultrastructure (10,11,18) suggesting an important role for lipid composition in the development or maintenance of membrane architecture. We recently isolated a novel mutant, designatedfadB, deficient in the activity of the chloroplast 9 desaturase which converts palmitic acid (16:0) at position sn-2 of MGD to cis-16:1 (12

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Correlations between the thermal stability of chloroplast (thylakoid) membranes and the composition and fluidity of their polar lipids upon acclimation of the higher plant, Nerium oleander, to growth temperature

Cited by 175 publications

References 22 publications

An ecological and evolutionary analysis of photosynthetic thermotolerance using the temperature-dependent increase in fluorescence

An ecological and evolutionary analysis of photosynthetic thermotolerance using the temperature-dependent increase in fluorescence

Response of isolated thylakoid membranes with altered fluidity to short term heat stress

Enhanced Thermal Tolerance in a Mutant of Arabidopsis Deficient in Palmitic Acid Unsaturation

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