We are analyzing https://link.springer.com/article/10.1007/s00726-007-0501-8.

Title:
Polyamines and abiotic stress: recent advances | Amino Acids
Description:
In this review we will concentrate in the results published the last years regarding the involvement of polyamines in the plant responses to abiotic stresses, most remarkably on salt and drought stress. We will also turn to other types of abiotic stresses, less studied in relation to polyamine metabolism, such as mineral deficiencies, chilling, wounding, heavy metals, UV, ozone and paraquat, where polyamine metabolism is also modified. There is a great amount of data demonstrating that under many types of abiotic stresses, an accumulation of the three main polyamines putrescine, spermidine and spermine does occur. However, there are still many doubts concerning the role that polyamines play in stress tolerance. Several environmental challenges (osmotic stress, salinity, ozone, UV) are shown to induce ADC activity more than ODC. The rise in Put is mainly attributed to the increase in ADC activity as a consequence of the activation of ADC genes and their mRNA levels. On the other hand, free radicals are now accepted as important mediators of tissue injury and cell death. The polycationic nature of polyamines, positively charged at physiological pH, has attracted the attention of researchers and has led to the hypothesis that polyamines could affect physiological systems by binding to anionic sites, such as those associated with nucleic acids and membrane phospholipids. These amines, involved with the control of numerous cellular functions, including free radical scavenger and antioxidant activity, have been found to confer protection from abiotic stresses but their mode of action is not fully understood yet. In this review, we will also summarize information about the involvement of polyamines as antioxidants against the potential abiotic stress-derived oxidative damage.
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Keywords {🔍}

google, scholar, cas, plant, polyamines, physiol, pubmed, stress, polyamine, plants, sci, salt, tolerance, abiotic, putrescine, decarboxylase, rice, article, ozone, arginine, effects, metabolism, activity, free, cell, oxidative, arabidopsis, growth, benavides, responses, biochem, response, biol, leaves, seedlings, content, involvement, stresses, spermidine, tobacco, transgenic, gene, accumulation, salinity, adc, levels, damage, liu, effect, development,

Topics {✒️}

d-pyrolline-5-carboxylate synthetase gene kaur-sawhney aw galston comba ml tomaro month download article/chapter young aw galston dc%2bd38xmt1shtry%3d 10 dyal2sxhsvelsa%3d%3d 10 s-adenosylmethionine decarboxylase transcript copper-induced oxidative damage león pj green arabidopsis stress-inducible gene hoffmann jf hausman mannitol iso-osmotic stresses tang rj newton plant cells induced ozone-induced leaf senescence lipid peroxidation biochem wheat leaf discs maría patricia benavides abiotic stress responses biochemical plant responses kaur sawhney induce adc activity oxidative stress induced amorós ma botella sun yl liu privacy choices/manage cookies abiotic stress tolerance betula pendula roth environmental stress tolerance drought stress stress-regulated genes full article pdf verma sn mishra chong dps verma wheat cultivars differing mung bean seedlings excess copper induces sunflower plants differing chilled cucumber plants arginine decarboxylase atadc2 potassium-dependent transcriptome federico mc guido antioxidant system responses salinity-stressed rice arginine decarboxylase activity cold-stressed tomato lupinus luteus seedlings plant responses golldack kj dietz

Questions {❓}

PT Evans RL Malmberg (1989) Do polyamines have roles in plant development?

Schema {🗺️}

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         description:In this review we will concentrate in the results published the last years regarding the involvement of polyamines in the plant responses to abiotic stresses, most remarkably on salt and drought stress. We will also turn to other types of abiotic stresses, less studied in relation to polyamine metabolism, such as mineral deficiencies, chilling, wounding, heavy metals, UV, ozone and paraquat, where polyamine metabolism is also modified. There is a great amount of data demonstrating that under many types of abiotic stresses, an accumulation of the three main polyamines putrescine, spermidine and spermine does occur. However, there are still many doubts concerning the role that polyamines play in stress tolerance. Several environmental challenges (osmotic stress, salinity, ozone, UV) are shown to induce ADC activity more than ODC. The rise in Put is mainly attributed to the increase in ADC activity as a consequence of the activation of ADC genes and their mRNA levels. On the other hand, free radicals are now accepted as important mediators of tissue injury and cell death. The polycationic nature of polyamines, positively charged at physiological pH, has attracted the attention of researchers and has led to the hypothesis that polyamines could affect physiological systems by binding to anionic sites, such as those associated with nucleic acids and membrane phospholipids. These amines, involved with the control of numerous cellular functions, including free radical scavenger and antioxidant activity, have been found to confer protection from abiotic stresses but their mode of action is not fully understood yet. In this review, we will also summarize information about the involvement of polyamines as antioxidants against the potential abiotic stress-derived oxidative damage.
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