Polyamines and environmental challenges: recent development

Bouchereau, Alain; Aziz, Aziz; Larher, F.; Martin-Tanguy, J.

doi:10.1016/s0168-9452(98)00218-0

Cited by 1,083 publications

(836 citation statements)

References 120 publications

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“…Major changes in PA metabolism occur in response to various abiotic stress conditions (Bouchereau et al 1999). Stress-induced PA accumulation is important in ameliorating plant responses to abiotic stress ( Figure 2).…”

Section: Journal Of Plant Interactionsmentioning

confidence: 99%

Polyamines: potent modulators of plant responses to stress

Fariduddin

Varshney

Yusuf

et al. 2013

Journal of Plant Interactions

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Polyamines (PAs) are aliphatic polycations that are widespread in living organisms. In this review, we are focusing the correlation between endogenous PA titers and physiological perturbations and on the protective role of various analogues of PAs against abiotic stresses. PAs are involved in many physiological processes, such as cell growth and development and also respond to diverse abiotic stresses. Polyamines level shifts in different ways depending on several factors, such as plant species, tolerance or sensitivity to stress, and duration of stress. Exogenously supplied PAs protected plants from abiotic stress, whereas transgenic plants overexpressing PA biosynthetic genes exhibited stress tolerance. On the other hand, loss-of-function mutant of PA biosynthetic genes, or decrease of PA titers, resulted to decrease stress tolerance.

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Section: Journal Of Plant Interactionsmentioning

confidence: 99%

Polyamines: potent modulators of plant responses to stress

Fariduddin

Varshney

Yusuf

et al. 2013

Journal of Plant Interactions

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“…Moreover, they are implicated in defense responses to various biotic and abiotic stresses (Bouchereau et al, 1999;Walters, 2003;Kusano et al, 2007;Cuevas et al, 2008) and participate in signaling pathways by regulation of cation channel activities (Kusano et al, 2008) such as during stomatal closure (Liu et al, 2000) and salt stress response (Zhao et al, 2007). As concerns root development, it has been reported that exogenously supplied Spd affects cell elongation and shape as well as the mitotic index in maize (Zea mays) primary roots (de Agazio et al, 1995).…”

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confidence: 99%

Perturbation of Polyamine Catabolism Can Strongly Affect Root Development and Xylem Differentiation

et al. 2011

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Spermidine (Spd) treatment inhibited root cell elongation, promoted deposition of phenolics in cell walls of rhizodermis, xylem elements, and vascular parenchyma, and resulted in a higher number of cells resting in G 1 and G 2 phases in the maize (Zea mays) primary root apex. Furthermore, Spd treatment induced nuclear condensation and DNA fragmentation as well as precocious differentiation and cell death in both early metaxylem and late metaxylem precursors. Treatment with either N-prenylagmatine, a selective inhibitor of polyamine oxidase (PAO) enzyme activity, or N,N 1 -dimethylthiourea, a hydrogen peroxide (H 2 O 2 ) scavenger, reverted Spd-induced autofluorescence intensification, DNA fragmentation, inhibition of root cell elongation, as well as reduction of percentage of nuclei in S phase. Transmission electron microscopy showed that N-prenylagmatine inhibited the differentiation of the secondary wall of early and late metaxylem elements, and xylem parenchymal cells. Moreover, although root growth and xylem differentiation in antisense PAO tobacco (Nicotiana tabacum) plants were unaltered, overexpression of maize PAO (SZmPAO) as well as down-regulation of the gene encoding S-adenosyl-L-methionine decarboxylase via RNAi in tobacco plants promoted vascular cell differentiation and induced programmed cell death in root cap cells. Furthermore, following Spd treatment in maize and ZmPAO overexpression in tobacco, the in vivo H 2 O 2 production was enhanced in xylem tissues. Overall, our results suggest that, after Spd supply or PAO overexpression, H 2 O 2 derived from polyamine catabolism behaves as a signal for secondary wall deposition and for induction of developmental programmed cell death.

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“…ADC activity has been linked to stress responses. 2,9 It is known that PAs are capable of protecting membranes against ROS-induced lipid peroxidation. 15 The increase in PAs content at an early stage as detected in this work may be also related to an anti-oxidant role that has been attributed to PAs.…”

Section: Discussionmentioning

confidence: 99%

“…Putrescine is generally known to increase under many stress conditions. 9,10 The involvement of PAs in stress response is well established for several plant species, although their precise role is still unclear. 2 Spermidine and spermine present anti-senescent properties, 11 and yet, they may inhibit growth and induce oxidative stress; these PAs increased nitric oxide release in Arabidopsis thaliana seedlings.…”

Section: Adc Accumulation Throughout Organogenic Nodule Formationmentioning

confidence: 99%