Polyamines reprogram oxidative and nitrosative status and the proteome of citrus plants exposed to salinity stress

Tanou, Georgia; Ziogas, Vasileios; Belghazi, Maya; Christou, Anastasis; Filippou, Panagiota; Job, Dominique; Fotopoulos, Vasileios; Molassiotis, Athanassios

doi:10.1111/pce.12204

Cited by 172 publications

(138 citation statements)

References 98 publications

(216 reference statements)

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“…In citrus plants 271 S-nitrosylated proteins were identified as being polyamineregulated [55]. As Fe-superoxide-dismutase, dehydroascorbate reductase and monodehydroascorbate reductase are also polyamine-induced S-nitrosylation target proteins, NO-modulated S-nitrosylation is also a possible link between polyamines and stress responses [51].…”

Section: Signaling Components Providing Linkage Between Polyamines Anmentioning

confidence: 99%

“…As Fe-superoxide-dismutase, dehydroascorbate reductase and monodehydroascorbate reductase are also polyamine-induced S-nitrosylation target proteins, NO-modulated S-nitrosylation is also a possible link between polyamines and stress responses [51]. The mode of action by which polyamines affect S-nitrosylation may differ for individual polyamines [55]. They influence the stress responses of plants through interconversion loops occurring in the polyamine cycle, since H 2 O 2 , as an upstream signaling molecule, also leads to NO production in plants.…”

Section: Signaling Components Providing Linkage Between Polyamines Anmentioning

confidence: 99%

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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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Section: Signaling Components Providing Linkage Between Polyamines Anmentioning

confidence: 99%

Section: Signaling Components Providing Linkage Between Polyamines Anmentioning

confidence: 99%

Speculation: Polyamines are important in abiotic stress signaling

2015

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“…Rosales et al (2012) found that PAs can regulate the combination of 14-3-3 proteins with the H + -ATPase, thereby inducing NR activity. Tanou et al (2014) indicated that Spm can increase the relative expression of leNR in citrus under salinity stress. In addition, compared to control, treatment with Spd increased transcript levels of leNR in tomato, but exogenous Put did not alter leNR expression under chilling stress.…”

Section: Nos and Nr Pathways Involved In Spd-induced No Synthesis In mentioning

confidence: 99%

Nitric oxide induced by polyamines involves antioxidant systems against chilling stress in tomato (Lycopersicon esculentum Mill.) seedling

Diao

Song

Shi

et al. 2016

J. Zhejiang Univ. Sci. B

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Polyamines (PAs) and nitric oxide (NO) are vital signals in modulating plant response to abiotic stress. However, to our knowledge, studies on the relationship between NO and PAs in response to cold stress in tomato are limited. Accordingly, in this study, we investigated the effects of putrescine (Put) and spermidine (Spd) on NO generation and the function of Spd-induced NO in the tolerance of tomato seedling under chilling stress. Spd increased NO release via the nitric oxide synthase (NOS)-like and nitrate reductase (NR) enzymatic pathways in the seedlings, whereas Put had no such effect. Moreover, H 2 O 2 might act as an upstream signal to stimulate NO production. Both exogenous NO donor (sodium nitroprusside (SNP)) and Spd enhanced chilling tolerance in tomato, thereby protecting the photosynthetic system from damage. Compared to chilling treatment alone, Spd enhanced the gene expressions of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX), and their enzyme activities in tomato leaves. However, a scavenger or inhibitor of NO abolished Spd-induced chilling tolerance and blocked the increased expression and activity due to Spd of these antioxidant enzymes in tomato leaves under chilling stress. The results showed that NO induced by Spd plays a crucial role in tomato's response to chilling stress.

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“…Furthermore, some reports have focused on proteomic approaches whereby post-translational modification (PTM) phenomena such as tyrosine nitration, carbonylation, and S-nitrosylation events were also identified in response to chemical priming [56,57]. Interestingly, it was shown that application of H 2 O 2 or application of SNP led to RNS-linked PTMs (i.e., S-nitrosylation) or ROSlinked PTMs (i.e., carbonylation), respectively; this observation provides further support for the interaction between these molecules…”

Section: Promising Chemicals: Assessment Of Common Components Of the mentioning

confidence: 99%