Chilling-induced changes in membrane fluidity and antioxidant enzyme activities in Coffea arabica L. roots

Queiroz, C. G. S.; Alonso, Antônio; Mares-Guia, Marcos; Magalhães, Antonio Celso Novaes de

doi:10.1023/a:1001802528068

Cited by 72 publications

(35 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The MDA content in SP increased more than three‐fold in leaves and about three‐fold in TR and MR when compared with the values of CP during drought stress (Table 2). Accumulation of MDA as a consequence of lipid peroxidation, the main effect of oxidative damage, has also been observed during the imposition of other abiotic stresses such as those responsible for seed deterioration in sunflower (Bailly et al 1996) and in chill‐stressed roots of Coffea arabica (Queiroz et al 1998). MDA levels in water‐stressed olive trees appear to be higher than those observed in herbaceous species grown in the same environmental conditions (Sairam et al 1997/98).…”

Section: Discussionmentioning

confidence: 99%

Lipoxygenase activity and proline accumulation in leaves and roots of olive trees in response to drought stress

Sofo

Dichio

Xiloyannis

et al. 2004

Physiologia Plantarum

200

141

View full text Add to dashboard Cite

The olive tree (Olea europaea L.) is commonly grown in the Mediterranean basin and is able to resist severe and prolonged drought. Levels of proline (PRO) and malondialdehyde (MDA), and the lipoxygenase (LOX) activity were determined in 2-year-old olive plants (cv. 'Coratina') grown in environmental conditions characterized by high temperatures and high photosynthetic photon flux density levels and gradually subjected to a controlled water deficit for 20 days. Before and during the experimental period, leaf and root samples were collected and analysed for PRO and MDA. The levels of PRO increased in parallel with the severity of drought stress in both leaves and roots. Significant increases of LOX activity and MDA content were also observed during the progressive increment of drought stress in both leaf and root tissues. Measurements of transpiration and photosynthetic rate, stomatal conductance and substomatal CO(2) concentration were carried out during the experiment. The accumulation of PRO indicates a possible role of PRO in drought tolerance. The increases of MDA content and LOX activity show that the water deficit is associated with lipid peroxidation mechanisms.

show abstract

Section: Discussionmentioning

confidence: 99%

Lipoxygenase activity and proline accumulation in leaves and roots of olive trees in response to drought stress

Sofo

Dichio

Xiloyannis

et al. 2004

Physiologia Plantarum

200

141

View full text Add to dashboard Cite

show abstract

“…Cold stress enhances the production of free radicals that provoke the formation of lipid radicals which form covalent bonds, thus rigidifying the membrane (Alonso et al 1997). Malondialdehyde (MDA) is one of the final products of stressinduced lipid peroxidation of polyunsaturated fatty acids (Leshem 1987) and it is considered as a marker for cold sensitivity (Queiroz et al 1998;Campos et al 2003). Regarding photosynthesis, chilling can disrupt major components such as the thylakoid electron transport, the carbon reduction cycle and the stomatal conductance (for review see Allen and Ort 2001).…”

Section: Introductionmentioning

confidence: 99%

Effect of chilling on photosynthesis and antioxidant enzymes in Hevea brasiliensis Muell. Arg.

Mai

Herbette

Vandame

et al. 2009

Trees

View full text Add to dashboard Cite

The aim of the present study was to assess the tolerance of Hevea brasiliensis to chilling temperatures since rubber production has been extended to sub-optimal environments. PB260 clone was used to analyze the responses of leaves chilled at 10°C during 96 h, as well as their recovery at 28°C. Some key parameters were used to evaluate photosynthetic apparatus functioning, membrane damage (electrolyte leakage) and oxidative stress. A shortterm response versus a long-term one have been recorded, the time point of 24 h, when stomata closure was effective, being the border between the two responses. P n decreased dramatically at 1 h, and Fv/Fm was slightly affected. NPQ reached its maximal level between 4 and 7 h. Lipid peroxidation and membrane lysis were observed between 48 and 96 h. Activities of antioxidant enzymes increased, along with the induction of antioxidant gene expression. Finally, the plants were capable to recover (net photosynthetic rate, photochemical efficiency, antioxidant enzymes activities) when placed back to 28°C showing that PB260 can withstand long-term chilling.

show abstract

“…This species is considered to be sensitive to low temperatures (Levitt, 1980;Bauer et al, 1985), presenting decreased growth and stunting (Smille et al, 1988); coffee plants are also prone to injuries caused by low temperatures (Levitt, 1980). Studies involving the mechanisms that modulate tolerance or susceptibility to chilling in coffee are rare (Bauer et al, 1985;Queiroz et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

“…The ability of plants to tolerate chilling stress has been studied as an important ecophysiological adaptation phenomenon and is the subject of intense research in the field of plant biology with many agricultural applications (Bauer et al, 1985;Smillie et al, 1988;Alonso et al, 1997;Queiroz et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

The effect of chilling on the photosynthetic activity in coffee (Coffea arabica L.) seedlings: The protective action of chloroplastid pigments

Oliveira¹,

Alves²,

Magalhães³

2002

Braz. J. Plant Physiol.

View full text Add to dashboard Cite

Coffea arabica is considered to be sensitive to low temperatures, being affected throughout its entire life cycle. Injury caused by chilling (low temperatures above zero degree centigrade) is characterized primarily by inhibition of the photosynthetic process. The objective of this work was to evaluate the role of photosynthetic pigments in the tolerance of coffee (C. arabica L.) seedlings to chilling. The evaluation the photosynthetic activity was made by emission of Chl a fluorescence at room temperature (25 ºC) in vivo and in situ, using a portable fluorometer. The pigment content was obtained by extraction with 80 % acetone, while estimation of membrane lipid peroxidation was determined by measuring the MDA content in leaf tissue extracts. The results indicated a generalized reduction in the quantum yield of PSII when the seedlings were maintained in the dark. The reduction occurred in the seedlings submitted to chilling treatment as well as in the control ones. This demonstrates that not only chilling acts to cause an alteration in PSII. It is possible that the tissue storage reserves had been totally exhausted, with the respiratory rate exceeding the photosynthetic rate; the later was nil, since the seedlings were kept in the dark. The efficiency in the capture, transfer and utilization of light energy in PS II photochemical reactions requires a sequence of photochemical, biochemical and biophysical events which depend on the structural integrity of the photosynthetic apparatus. However, this efficiency was found to be related to the protective action of chloroplastid pigments, rather than to the concentration of these pigments.

show abstract

Chilling-induced changes in membrane fluidity and antioxidant enzyme activities in Coffea arabica L. roots

Cited by 72 publications

References 37 publications

Lipoxygenase activity and proline accumulation in leaves and roots of olive trees in response to drought stress

Lipoxygenase activity and proline accumulation in leaves and roots of olive trees in response to drought stress

Effect of chilling on photosynthesis and antioxidant enzymes in Hevea brasiliensis Muell. Arg.

The effect of chilling on the photosynthetic activity in coffee (Coffea arabica L.) seedlings: The protective action of chloroplastid pigments

Contact Info

Product

Resources

About