Wyniki wyszukiwania

1

Investigation of cadmium accumulation in a metallicolous population of the syrian bean caper (Zygophyllum fabago L.)

100%

Lefevre L., Lutts S.

Acta Physiologiae Plantarum

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2004

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tom 26

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nr 3 suppl.

2

Short-term iron toxicity triggers ferritin synthesis and antioxidative responses in different way depending on the plant organ in the African rice species Oryza glaberrima steud

100%

Majerus V., Lutts S.

Acta Physiologiae Plantarum

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2004

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tom 26

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nr 3 suppl.

3

Does habitat of Atriplex halimus L. affect plant strategy for osmotic adjustment?

81%

Hassine A. B., Bouzid S., Lutts S.

Acta Physiologiae Plantarum

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2010

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tom 32

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nr 2

The impact of water stress was analysed in the xero-halophyte Mediterranean shrub Atriplex halimus using two Tunisian populations originating from a subhumid coastal site (Monastir) or from a semi-arid area (Kairouan). Seedlings were exposed for 10 days to nutrient solution containing either 0 or 15% polyethylene glycol. Water potential (Ψw), osmotic potential (Ψs), osmotic potential at full turgor [Ψs(100)], relative water content (RWC), shoot dry weight (DW) and changes in solute concentrations were quantified every 2 days throughout the stress period and inorganic solutes contents were determined at the end of the treatment. The water deficit induced a decrease in Ψw, Ψs and RWC in both populations, recorded changes being higher in plants of Monastir than those of Kairouan while the shoot dry weight was reduced in a similar extent in stressed plants from both populations. Water deficit induced an increase in proline, glycinebetaine and sugar concentrations. Proline accumulated as early as after the 24-h stress treatment while, glycinebetaine required more than 6 days of stress to accumulate. At the end of the stress period, the plants of Kairouan population accumulated higher amounts of proline than those of Monastir, while an opposite trend was reported for glycinebetaine. Both populations specifically accumulated Na⁺ in response to drought stress, suggesting that this element could play a physiological role in the stress response of this xero-halophyte species. Presented results suggest that the non-recyclable osmotic solute glycinebetaine does not necessarily preferentially accumulates in population facing permanent water stress and that other strategy than osmotic adjustment might be involved in drought tolerance of A. halimus.

4

Effects of aluminium on root growth and apical root cells in rice (Oryza sativa L.) cultivars. Reliability of screening tests to detect Al resistance at the seedling stage

81%

Costa de Mecedo C. E., Van Sint Jan V., Kinet J.-M., Lutts S.

Acta Physiologiae Plantarum

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2009

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tom 31

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nr 6

The effects of Al₂(SO₄)₃‧18H₂O on growth of root and apical root cells were studied in seedlings of rice cultivars differing in Al resistance including I Kong Pao and Aiwu (Al-sensitive) and IRAT 112 and IR6023-10-1-1 (Al-resistant). Inhibition of root growth was a typical effect of Al, and the extent of the inhibition depended on both cultivar and Al concentration. Al impaired the activity of the root meristem as indicated by reductions in its size, mitotic activity and the diameter of the meristematic cell nucleoli. Cell size in the elongation zone of the root was also reduced by Al. The reliability of the haematoxylin staining method to classify rice cultivars according to their Al-sensitivity failed to discriminate the Al-resistant IR6023-10-1-1 cultivar from the two sensitive cultivars. The results are discussed in relation to the Al resistance mechanisms operating in rice.

5

Water stress impact on young seedling growth of Acacia arabica

81%

Lassouane N., Aid F., Lutts S.

Acta Physiologiae Plantarum

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2013

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tom 35

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nr 07

Drought is the major constraint in arid regions throughout the world and identification of drought-resistant plants is therefore of crucial importance. Since young seedling stage is especially sensitive to water stress, the present work analyzed the physiological behavior of seedling from Acacia arabica issued from a dry area, grown under controlled environmental conditions and subjected to progressive soil drying. Although soil gravimetric water content (g H2O g-1 soil dry weight) dropped from 80 % to less than 35 %, most plants remained alive until the end of the water stress. Seedlings were able to efficiently close their stomata to reduce water losses and accumulated high amounts of proline. Despite osmotic adjustment, turgor pressure decreased in stressed plants and could explain the stress-induced inhibition of plant growth. Decrease in net photosynthesis was related to stressinduced decrease in stomatal conductance and not to any impact on chlorophyll concentration or fluorescence-related parameter: both PSII efficiency and photochemical quenching remained unaffected by water stress while drought-induced increase in non-photochemical quenching should be regarded as a strategy to avoid over-energisation of the photosynthetic apparatus. Instantaneous water use efficiency increased in stressed plants comparative to controls. Oxidative stress estimated by malondialdehyde concentration was recorded only at the end of the treatment, suggesting that stressed plants remained able to cope with reactive oxygen species. Water stress induced an increase in anthocyanins, while aglycone flavonols decreased. Those compounds were not involved in the management of oxidative stress. It is concluded that A. arabica is a promising drought-resistant plant species for rehabilitation of dry areas.

6

Assessment of the preventive effect of vermicompost on salinity resistance in tomato (Solanum lycopersicum cv. Ailsa Craig)

81%

Benazzouk S., Djayouli Y. E., Lutts S.

Acta Physiologiae Plantarum

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2018

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tom 40

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nr 06

7

Seed priming as a strategy to overcame abiotic stresses during germination

71%

Wojtyla L., Lechowska K., Kubala S., Quinet M., Lutts S.

Acta Physiologiae Plantarum

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2018

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tom 40

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nr 11-11th International Conference Plant Functioning under Environmental Stress...

8

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Effect of cobalt chloride on soybean seedlings subjected to cadmium stress

71%

Chmielewska-Bak J., Lefevre I., Lutts S., Kulik A., Deckert J.

Acta Societatis Botanicorum Poloniae

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2014

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tom 83

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nr 3

Contamination of the environment with heavy metals such as Cd is a serious problem of modern world. Exposure of plants to Cd leads to oxidative stress, inhibition of respiration and photosynthesis, increased rate of mutation and, as a consequence, stunted growth and yield decrease. One of the common reactions of plants to cadmium stress is over-production of ethylene, however the exact role of this hormone in plants response to Cd is still unrecognized. The aim of the present study is evaluation of the impact of an ethylene synthesis inhibitor, Co, on the response of soybean seedlings to cadmium stress. The experiments included measurements of growth, cell viability, ethylene production and expression of genes associated with cellular signaling in soybean seedlings exposed to CdCl2 (with Cd in a concentration of 223 μM) and/or CoCl2 (with Co in concentration of 4.6 μM). Surprisingly, the results show that Co has no effect on ethylene biosynthesis, however, it affects cell viability and expression of Cd-induced genes associated with plant signaling pathways. The affected genes encode mitogen-activated protein kinase kinase2 (MAPKK2), nitrate reductase and DOF1 and bZIP2 transcription factors. The role of Co in plants response to cadmium stress and its potential use as an ethylene inhibitor is discussed.

9

Transcriptome and proteome changes accompanying increased vigor of osmoprimed rape (Brassica napus L.) seeds

61%

Kubala S., Lechowska K., Wojtyla L., Kosmala A., Quinet M., Lutts S., Garnczarska M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 3

Ograniczanie wyników

Investigation of cadmium accumulation in a metallicolous population of the syrian bean caper (Zygophyllum fabago L.)

Short-term iron toxicity triggers ferritin synthesis and antioxidative responses in different way depending on the plant organ in the African rice species Oryza glaberrima steud

Does habitat of Atriplex halimus L. affect plant strategy for osmotic adjustment?

Effects of aluminium on root growth and apical root cells in rice (Oryza sativa L.) cultivars. Reliability of screening tests to detect Al resistance at the seedling stage

Water stress impact on young seedling growth of Acacia arabica

Assessment of the preventive effect of vermicompost on salinity resistance in tomato (Solanum lycopersicum cv. Ailsa Craig)

Seed priming as a strategy to overcame abiotic stresses during germination

Effect of cobalt chloride on soybean seedlings subjected to cadmium stress

Transcriptome and proteome changes accompanying increased vigor of osmoprimed rape (Brassica napus L.) seeds