Polyamines and ethylene changes during germination of different plant species under salinity

Zapata, Pedro J.; Serrano, Marı́a; Pretel, M.T.; Amorós, Asunción; Botella, M.A.

doi:10.1016/j.plantsci.2004.05.014

Cited by 169 publications

(91 citation statements)

References 37 publications

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“…Spm)/Put ratio increases with salinity in all species with enhanced salinity tolerance (Bouchereau et al 1999;Zapata et al 2004;Liu et al 2007, Gill andTuteja 2010). Our results showed the decrease in the free and microsome-and thylakoid-associated (Spd ?…”

Section: Discussionsupporting

confidence: 59%

“…In Lupinus luteus (a droughttolerant species), Put and Spd were accumulated in leaves in osmotic and salt-stress conditions (Legocka and Kluk 2005). Zapata et al (2004) studied the effect of salinity on plant growth, ethylene production, and PA level in Spinacia oleracea, Lactuca sativa, Cucumis melo, Capsicum annum, Brassica oleracea, Beta vulgaris, and Lycopersicon esculentum. They found that levels of PAs changed with salinity and in most cases putrescine (Put) content decreased, while spermidine (Spd) and/or spermine (Spm) content increased.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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Section: Discussionsupporting

confidence: 59%

Section: Introductionmentioning

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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“…It was inferred that tolerance to salinity in rice cultivars was due to high content of Spd and Spm and low level of Put. Furthermore, Zapata et al (2004) measured PAs levels in different plants (spinach, lettuce, melon, pepper, beetroot, and tomato), subjected to salt stress (100 or 150 mM NaCl). It was observed that all the plant species had lower concentration of Put except beet root grown under saline conditions.…”

Section: Salinitymentioning

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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“…Specifically, salt stress may lead to changed (spermidine+spermine)/putrescine ratio and salt-tolerant plant species were found to accumulate less putrescine [22]. In fact, the greater accumulation of putrescine, leading to a low (spermidine+spermine)/putrescine ratio, may even injure plants.…”

Section: Introductionmentioning

confidence: 99%

Speculation: Polyamines are important in abiotic stress signaling

2015

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The main role of polyamines was originally assumed to be as direct protective compounds important under stress conditions. Although in some cases a correlation was found between the endogenous polyamine content and stress tolerance, this relationship cannot be generalized. Polyamines should no longer be considered simply as protective molecules, but rather as compounds that are involved in a complex signaling system and have a key role in the regulation of stress tolerance. The major links in polyamine signaling may be H 2 O 2 and NO, which are not only produced in the course of the polyamine metabolism, but also transmit signals that influence gene expression via an increase in the cytoplasmic Ca 2+ level.Polyamines can also influence Ca 2+ influx independently of the H 2 O 2 -and/or NO-mediated pathways. Furthermore, these pathways may converge. In addition, several protein kinases have been shown to be influenced at the transcriptional or post-translational level by polyamines. Individual polyamines can be converted into each other in the polyamine cycle.In addition, their metabolism is linked with other hormones or signaling molecules. However, as individual polyamines trigger different transcriptional responses, other mechanisms and the existence of polyamine-responsive elements and the corresponding transacting protein factors are also involved in polyamine-related signaling pathways. Highlights:-Polyamines are interconvertible in the polyamine cycle -The statement "the higher the polyamine level the better" cannot be generalized -In stress responses the ratio of signaling to direct protection is more important -Polyamines are also involved in hormonal cross-talk -H 2 O 2 and NO are the major but not the only links in polyamine stress signaling

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Polyamines and ethylene changes during germination of different plant species under salinity

Cited by 169 publications

References 37 publications

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

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

Polyamines: potent modulators of plant responses to stress

Speculation: Polyamines are important in abiotic stress signaling

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