Exogenous spermidine modulates polyamine metabolism and improves stress responsive mechanisms to protect tomato seedlings against salt stress

Raziq, Abdul; Din, Atta Mohi Ud; Anwar, Sumera; Wang, Yu; Jahan, Mohammad Shah; He, Ming-Ming; Ling, Chen Guang; Sun, Jun; Shu, Sheng; Guo, Shirong

doi:10.1016/j.plaphy.2022.07.005

Cited by 20 publications

(8 citation statements)

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“…Overexpression of critical enzyme genes in the Spd metabolic pathway in plants can protect against damage induced by salt stress by enhancing Spd content and enhancing salt tolerance has been demonstrated in transgenic A. thaliana ( Kasukabe et al., 2004 ; Tang et al., 2021 ), I. batatas ( Kasukabe et al., 2006 ), O. sativa ( Roy and Wu, 2002 ), and tobacco ( Nicotiana tabacum ) ( Waie and Rajam, 2003 ). Meanwhile, some reports on the exogenous application of Spd to enhance salt resistance in mung bean ( Vigna radiata ) ( Nahar et al., 2016 ), O. sativa ( Roychoudhury et al., 2011 ), ginseng ( Panax ginseng ) ( Parvin et al., 2014 ), and S. lycopersicum ( Raziq et al., 2022 ) have also been reported. In the present study, we observed that Spd content was substantially up-regulated in all comparison groups except 0 h vs. 1 h and 12 h vs. 24 h, presumably making an important contribution during the mid- to late-stress response to salt stress in S. lycopersicum .…”

Section: Discussionmentioning

confidence: 99%

Integrated metabolomic and transcriptomic analysis reveals the role of phenylpropanoid biosynthesis pathway in tomato roots during salt stress

et al. 2022

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As global soil salinization continues to intensify, there is a need to enhance salt tolerance in crops. Understanding the molecular mechanisms of tomato (Solanum lycopersicum) roots’ adaptation to salt stress is of great significance to enhance its salt tolerance and promote its planting in saline soils. A combined analysis of the metabolome and transcriptome of S. lycopersicum roots under different periods of salt stress according to changes in phenotypic and root physiological indices revealed that different accumulated metabolites and differentially expressed genes (DEGs) associated with phenylpropanoid biosynthesis were significantly altered. The levels of phenylpropanoids increased and showed a dynamic trend with the duration of salt stress. Ferulic acid (FA) and spermidine (Spd) levels were substantially up-regulated at the initial and mid-late stages of salt stress, respectively, and were significantly correlated with the expression of the corresponding synthetic genes. The results of canonical correlation analysis screening of highly correlated DEGs and construction of regulatory relationship networks with transcription factors (TFs) for FA and Spd, respectively, showed that the obtained target genes were regulated by most of the TFs, and TFs such as MYB, Dof, BPC, GRAS, and AP2/ERF might contribute to the regulation of FA and Spd content levels. Ultimately, FA and Spd attenuated the harm caused by salt stress in S. lycopersicum, and they may be key regulators of its salt tolerance. These findings uncover the dynamics and possible molecular mechanisms of phenylpropanoids during different salt stress periods, providing a basis for future studies and crop improvement.

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Section: Discussionmentioning

confidence: 99%

Integrated metabolomic and transcriptomic analysis reveals the role of phenylpropanoid biosynthesis pathway in tomato roots during salt stress

et al. 2022

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“…The exogenous application of spermidine (Spd) on tomato cv. 'Ailsa Craig' seedlings grown under salt stress resulted in higher photosynthesis and biomass, better ionic and osmotic homeostasis, and enhanced ROS scavenging capacity (Raziq et al, 2022). Siddiqui et al (2017) found that the chlorophyll a and b contents, proline, activity of CAT, SOD, POD, GR and APX were increased and H 2 O 2 and MDA production in tomato var.…”

Section: Recommendations For Alleviating the Effects Of Salinity On T...mentioning

confidence: 99%

Tomato responses to salinity stress: From morphological traits to genetic changes

2023

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Tomato is an essential annual crop providing human food worldwide. It is estimated that by the year 2050 more than 50% of the arable land will become saline and, in this respect, in recent years, researchers have focused their attention on studying how tomato plants behave under various saline conditions. Plenty of research papers are available regarding the effects of salinity on tomato plant growth and development, that provide information on the behavior of different cultivars under various salt concentrations, or experimental protocols analyzing various parameters. This review gives a synthetic insight of the recent scientific advances relevant into the effects of salinity on the morphological, physiological, biochemical, yield, fruit quality parameters, and on gene expression of tomato plants. Notably, the works that assessed the salinity effects on tomatoes were firstly identified in Scopus, PubMed, and Web of Science databases, followed by their sifter according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline and with an emphasis on their results. The assessment of the selected studies pointed out that salinity is one of the factors significantly affecting tomato growth in all stages of plant development. Therefore, more research to find solutions to increase the tolerance of tomato plants to salinity stress is needed. Furthermore, the findings reported in this review are helpful to select, and apply appropriate cropping practices to sustain tomato market demand in a scenario of increasing salinity in arable lands due to soil water deficit, use of low-quality water in farming and intensive agronomic practices.

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“…Therefore, they are widely used in modern agriculture. Previous research found that spraying 0.1 mM Spd on tomato leaves reduces the adverse effects of salt stress on tomato seedlings by increasing antioxidant enzyme activity and proline accumulation [22]. In a study of grape response to drought, Zhao et al [23] found that exogenous Put could…”

Section: Discussionmentioning

confidence: 98%

Exogenous Spermidine Alleviated Low-Temperature Damage by Affecting Polyamine Metabolism and Antioxidant Levels in Apples

He,

Zhou,

Lyu

et al. 2024

Plants

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Low-temperature stress significantly limits the growth, development, and geographical distribution of apple cultivation. Spermidine (Spd), a known plant growth regulator, plays a vital role in the plant’s response to abiotic stress. Yet, the mechanisms by which exogenous Spd enhances cold resistance in apples remain poorly understood. Therefore, the present study analyzed the effects of exogenous Spd on antioxidant enzyme activity, polyamine metabolism, and related gene expression levels of 1-year-old apple branches under low-temperature stress. Treatment with exogenous Spd was found to stabilize branch tissue biofilms and significantly reduce the levels of reactive oxygen species by elevating proline content and boosting the activity of antioxidants such as superoxide dismutase. It also upregulated the activities of arginine decarboxylase, S-adenosylmethionine decarboxylase, and spermidine synthase and the expression levels of MdADC1, MdSAMDC1, and MdSPDS1 under low-temperature stress and led to the accumulation of large amounts of Spd and spermine. Moreover, compared with the 2 mmol·L−1 Spd treatment, the 1 mmol·L−1 Spd treatment increased the expression levels of cold-responsive genes MdCBF1/2/3, MdCOR47, and MdKIN1, significantly. The findings suggest that exogenous Spd can enhance cold resistance in apple branches significantly. This enhancement is achieved by modulating polyamine metabolism and improving antioxidant defense mechanisms, which could be exploited to improve apple cultivation under cold stress conditions.

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Exogenous spermidine modulates polyamine metabolism and improves stress responsive mechanisms to protect tomato seedlings against salt stress

Cited by 20 publications

References 40 publications

Integrated metabolomic and transcriptomic analysis reveals the role of phenylpropanoid biosynthesis pathway in tomato roots during salt stress

Integrated metabolomic and transcriptomic analysis reveals the role of phenylpropanoid biosynthesis pathway in tomato roots during salt stress

Tomato responses to salinity stress: From morphological traits to genetic changes

Exogenous Spermidine Alleviated Low-Temperature Damage by Affecting Polyamine Metabolism and Antioxidant Levels in Apples

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