Effects of spermidine and spermine levels on salt tolerance associated with tonoplast H+-ATPase and H+-PPase activities in barley roots

Liu, Jun; Yu, Bingjun; Youliang, Liu

doi:10.1007/s10725-006-9001-1

Cited by 31 publications

(19 citation statements)

References 25 publications

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“…Under natural conditions, PA may also play a beneficial role in mycorrhizal development, contributing to improved plant water status and water use efficiency (Wu et al, 2010). Second, in many cases accumulation of PAs positively correlates with salt (Chattopadhayay et al, 2002; Liu et al, 2006; Mutlu and Bozcuk, 2007) and drought (van der Mescht et al, 1998; Liu et al, 2005), resistance. Third, and maybe the strongest line of evidence came from the experiments with the gain- or loss-of-the-function mutants.…”

Section: Stress-induced Changes In Polyamine Content and Their Role Imentioning

confidence: 99%

Polyamines control of cation transport across plant membranes: implications for ion homeostasis and abiotic stress signaling

2014

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Polyamines are unique polycationic metabolites, controlling a variety of vital functions in plants, including growth and stress responses. Over the last two decades a bulk of data was accumulated providing explicit evidence that polyamines play an essential role in regulating plant membrane transport. The most straightforward example is a blockage of the two major vacuolar cation channels, namely slow (SV) and fast (FV) activating ones, by the micromolar concentrations of polyamines. This effect is direct and fully reversible, with a potency descending in a sequence Spm4+ > Spd3+ > Put2+. On the contrary, effects of polyamines on the plasma membrane (PM) cation and K+-selective channels are hardly dependent on polyamine species, display a relatively low affinity, and are likely to be indirect. Polyamines also affect vacuolar and PM H+ pumps and Ca2+ pump of the PM. On the other hand, catabolization of polyamines generates H2O2 and other reactive oxygen species (ROS), including hydroxyl radicals. Export of polyamines to the apoplast and their oxidation there by available amine oxidases results in the induction of a novel ion conductance and confers Ca2+ influx across the PM. This mechanism, initially established for plant responses to pathogen attack (including a hypersensitive response), has been recently shown to mediate plant responses to a variety of abiotic stresses. In this review we summarize the effects of polyamines and their catabolites on cation transport in plants and discuss the implications of these effects for ion homeostasis, signaling, and plant adaptive responses to environment.

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Section: Stress-induced Changes In Polyamine Content and Their Role Imentioning

confidence: 99%

Polyamines control of cation transport across plant membranes: implications for ion homeostasis and abiotic stress signaling

2014

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“…Some works suggested that PAs play a role in the modification of the activities of the proton pumps in plants, especially under stresses conditions (Mornet et al , Liu et al , Liu et al , Garufi et al , Janicka‐Russak et al ). It was postulated that PAs contribute to the ionic equilibrium due to their polycationic nature, being beneficial for root development under salt stress (Janicka‐Russak et al ).…”

Section: Introductionmentioning

confidence: 99%

Polyamines affect the cellular growth and structure of pro‐embryogenic masses in Araucaria angustifolia embryogenic cultures through the modulation of proton pump activities and endogenous levels of polyamines

Dutra

Silveira

Azevedo

et al. 2012

Physiologia Plantarum

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Polyamines (PAs) are abundant polycationic compounds involved in many physiological processes in plants, including somatic embryogenesis. This study investigates the role of PAs on cellular growth and structure of pro-embryogenic masses (PEMs), endogenous PA and proton pump activities in embryogenic suspension cultures of Araucaria angustifolia. The embryogenic suspension cultures were incubated with putrescine (Put), spermidine (Spd), spermine (Spm) and the inhibitor methylglyoxal-bis(guanylhydrazone) (MGBG), respectively (1 mM). After 24 h and 21 days, the cellular growth and structure of PEMs, endogenous PA contents and proton pump activities were analyzed. The addition of Spm reduced the cellular growth and promoted the development of PEMs in embryogenic cultures, which could be associated with a reduction in the activities of proton pumps, such as H(+) -ATPase P- and V-types and H(+) -PPases, and alterations in the endogenous PA contents. Spm significantly affected the physiology of the A. angustifolia somatic embryogenesis suspension, as it potentially affects cellular growth and structure of PEMs through the modulation of proton pump activities. This work demonstrates the involvement of exogenous PAs in the modulation of cellular growth and structure of PEMs, endogenous PA levels and proton pump activities during somatic embryogenesis. To our knowledge, this study is the first to report a relationship between PAs and proton pump activities in these processes. The results obtained in this study offer new perspectives for studies addressing the role of PAs and proton pump on somatic embryogenesis in this species.

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“…increased, so the action of PAs contributed to ionic equilibrium. A salt-tolerant barley cultivar accumulated in the roots much higher levels of Spm and Spm and a lower Put content than the salt-sensitive cultivar under salt stress (Liu et al 2006). It has often been suggested that Spd and Spm may contribute to stress tolerance, while Put has a lower or no effect on it (Bouchereau et al 1999;Liu et al 2007).…”

Section: Discussionmentioning

confidence: 99%

Sorbitol and NaCl stresses affect free, microsome-associated and thylakoid-associated polyamine content in Zea mays and Phaseolus vulgaris

Legocka

Sobieszczuk‐Nowicka

2011

Acta Physiol Plant

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Most of commercially important crops, including maize and common bean, are sensitive to water deficit and salinity. Polyamines are considered to be osmotic and salt tolerance modulators and biochemical indicators of these stresses. In the present study, we measured organ-specific changes in levels of free, microsome-and thylakoid-associated polyamines in leaves and roots of maize and common bean plants exposed for 24 h to osmotic and saline stresses. Putrescine levels were generally higher in the studied organs of both species and under both stresses; only in the roots of salt-treated bean it considerably decreased. In both species, salt stress (200 mM NaCl) induced a significant decrease in free spermidine in roots. We observed a significant decrease in the contents of all polyamines associated with the microsomes isolated from the roots of maize and bean growing in sorbitol and salt conditions. Also the microsomes isolated from the leaves of stressed plants were characterized by the lower contents of polyamines. Our data showed a reduction of putrescine content, with significantly decreased spermidine and spermine levels in thylakoids isolated from the chloroplasts of maize and bean plants growing under both stresses. The results indicate that the studied maize and bean cultivars are rather drought-sensitive. Additionally, microsome-and thylakoid-associated polyamines seem to be good markers of plant stress tolerance.

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Effects of spermidine and spermine levels on salt tolerance associated with tonoplast H+-ATPase and H+-PPase activities in barley roots

Cited by 31 publications

References 25 publications

Polyamines control of cation transport across plant membranes: implications for ion homeostasis and abiotic stress signaling

Polyamines control of cation transport across plant membranes: implications for ion homeostasis and abiotic stress signaling

Polyamines affect the cellular growth and structure of pro‐embryogenic masses in Araucaria angustifolia embryogenic cultures through the modulation of proton pump activities and endogenous levels of polyamines

Sorbitol and NaCl stresses affect free, microsome-associated and thylakoid-associated polyamine content in Zea mays and Phaseolus vulgaris

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