Polyamines: molecules with regulatory functions in plant abiotic stress tolerance

  title={Polyamines: molecules with regulatory functions in plant abiotic stress tolerance},
  author={Rub{\'e}n Alc{\'a}zar and Teresa Altabella and Francisco Marco and Cristina Bortolotti and Matthieu Reymond and Csaba Koncz and Pedro Carrasco and Antonio Fern{\'a}ndez Tiburcio},
Early studies on plant polyamine research pointed to their involvement in responses to different environmental stresses. During the last few years, genetic, transcriptomic and metabolomic approaches have unravelled key functions of different polyamines in the regulation of abiotic stress tolerance. Nevertheless, the precise molecular mechanism(s) by which polyamines control plant responses to stress stimuli are largely unknown. Recent studies indicate that polyamine signalling is involved in… 
Interactions between polyamines and abiotic stress pathway responses unraveled by transcriptome analysis of polyamine overproducers.
Comparison of common and specific gene networks affected by elevation of endogenous PAs support the view that these compounds actively participate in stress signaling through intricate crosstalks with abscisic acid (ABA), Ca(2+) signaling and other hormonal pathways in plant defense and development.
Polyamine Metabolism Responses to Biotic and Abiotic Stress.
This chapter reviewed the information available till date in relation to the roles played by polyamines in the responses of plants during biotic and abiotic stress and demonstrated that a fine-tuned regulation of the enzymes involved in the biosynthesis and catabolism of polyamines leads to the increment in the concentration of these compounds.
Improvement of plant abiotic stress tolerance through modulation of the polyamine pathway.
Protective roles of polyamines during plant abiotic stress responses are confirmed, the possibility to improve plant tolerance through genetic manipulation of the polyamine pathway is indicated, and further studies are needed to elucidate the polyamines signaling pathway.
Polyamine Biosynthesis Engineering as a Tool to Improve Plant Resistance to Abiotic Stress
This chapter summarizes the approaches undertaken to demonstrate the relationship between PAs and the stress response and, in particular, how the genetic manipulation of polyamine levels has evolved in a useful tool for the enhancement of plant stress tolerance in many species, including crops.
Transcriptome Analysis of Polyamine Overproducers Reveals Activation of Plant Stress Responses and Related Signalling Pathways Tolerance in Plants
Polyamines have been proposed to regulate multiple aspects of plant development and stress responses. In most of the cases, they interact with other signaling pathways to exert their action. Here we
Polyamines and Their Metabolic Engineering for Plant Salinity Stress Tolerance
Owing to their diverse functions in plant growth, development, and stress responses, PAs have emerged as potent targets for metabolic engineering to confer salt stress tolerance on manipulated plants.
Polyamines function in stress tolerance: from synthesis to regulation
A number of studies have demonstrated that polyamines function in stress tolerance largely by modulating the homeostasis of reactive oxygen species (ROS) due to their direct, or indirect, roles in regulating antioxidant systems or suppressing ROS production.
Polyamine metabolism and activation of lipid signalling pathways in Arabidopsis thaliana
The detailed characterization of the phospholipid responses carried out in this thesis, provides novel and interesting tools to further unravel the role of polyamines in eukaryotic cell biology in general and in plant biology in particular.
Recent Advances in Polyamine Metabolism and Abiotic Stress Tolerance
A system based approach is discussed as a potential strategy to dissect the existing variation in crop species in unraveling the interacting regulatory components/genetic determinants related to PAs mediated abiotic stress tolerance.
Polyamines under Abiotic Stress: Metabolic Crossroads and Hormonal Crosstalks in Plants
This review integrates the polyamine metabolic pathway in the context of its immediate metabolic network which is required to understand the multiple ways by which polyamines can maintain their homeostasis and participate in plant stress responses.


Involvement of polyamines in plant response to abiotic stress
Transgenic approaches demonstrate that polyamines play essential roles in stress tolerance and open up the possibility to exploit this strategy to improve plant tolerance to multiple environmental stresses.
Abscisic acid modulates polyamine metabolism under water stress in Arabidopsis thaliana
Limited information is available concerning plant signal transduction pathways regulating polyamine (PA) metabolism in response to various abiotic stress conditions. To gain a new insight into this
Polyamines: essential factors for growth and survival
This review summarizes the recent advances in polyamine research in the field of plant science compared with the knowledge obtained in microorganisms and animal systems.
Polyamines: ubiquitous polycations with unique roles in growth and stress responses.
The mechanisms of action of polyamines differ greatly from those of plant hormones, and there remain numerous unanswered questions regarding polyamines in plants, such as transport systems and polyamine-responsive genes.
Polyamines and abiotic stress: recent advances
Information is summarized about the involvement of polyamines as antioxidants against the potential abiotic stress-derived oxidative damage and other types of abiotic stresses, such as mineral deficiencies, chilling, wounding, heavy metals, UV, ozone and paraquat, where polyamine metabolism is also modified.
Putrescine as a signal to modulate the indispensable ABA increase under cold stress
Phenotypical reverse complementation tests for both adc and ABA-defective mutants support the conclusion that putrescine modulates ABA biosynthesis at the transcriptional level in response to low temperature thus uncovering a novel mode of action for polyamines as regulators of hormone biosynthesis.
Modulation of the polyamine biosynthetic pathway in transgenic rice confers tolerance to drought stress.
It is demonstrated clearly that the manipulation of polyamine biosynthesis in plants can produce drought-tolerant germplasm, and a model consistent with the role of polyamines in the protection of plants against abiotic stress is proposed.
Role of polyamines and ethylene as modulators of plant senescence
Current advances in the knowledge of the interrelationship between ethylene and PAs during senescence are dealt with which may open up new vistas of investigation for the future.
Functions of amine oxidases in plant development and defence.