Exogenous applications of Polyamines modulate drought responses in wheat through osmolytes accumulation, increasing free polyamine levels and regulation of polyamine biosynthetic genes

Ebeed, Heba Talat; Hassan, Nemat M.; Aljarani, Alshafei M.

doi:10.1016/j.plaphy.2017.07.014

Cited by 146 publications

(88 citation statements)

References 55 publications

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“…PAs, generally putrescine (Put), spermidine (Spd), and spermine (Spm), are polycationic low molecular weight compounds present in living organisms. PAs are known to be involved in plant development, cell division, embryogenesis, fruit development, dormancy termination, regulation of aging, and temperature stress processes [1,33,34]. Many authors indicate that PA accumulation is an important component of a response to cold stress in different crop plant species and that PAs play a significant role in counteracting stress [33,[35][36][37].…”

Section: Introductionmentioning

confidence: 99%

“…Studies of transgenic plants showed that the overproduction of PAs coincided with better stress tolerance [38]. Recent studies using exogenous PAs have shown that PAs enhanced wheat and maize tolerance to drought by increasing endogenous PAs [34,39]. PAs are closely associated with plant growth, stability of nucleic acids and membrane structure, stress resistance, and even plant survival [40][41][42].…”

Section: Introductionmentioning

confidence: 99%

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Foliar Application of Polyamines Modulates Winter Oilseed Rape Responses to Increasing Cold

Jankovska-Bortkevič

Gavelienė

Šveikauskas

et al. 2020

Plants

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Cold stress is one of the most common abiotic stresses experienced by plants and is caused by low temperature extremes and variations. Polyamines (PAs) have been reported to contribute in abiotic stress defense processes in plants. The present study investigates the survival and responses of PA-treated non-acclimated (N) and acclimated (A) winter oilseed rape to increasing cold conditions. The study was conducted under controlled conditions. Seedlings were foliarly sprayed with spermidine (Spd), spermine (Spm), and putrescine (Put) solutions (1 mM) and exposed to four days of cold acclimation (4 °C) and two days of increasing cold (from −1 to −3 °C). Two cultivars with different cold tolerance were used in this study. The recorded traits included the percentage of survival, H+-ATPase activity, proline accumulation, and ethylene emission. Exogenous PA application improved cold resistance, maintained the activity of plasma membrane H+-ATPase, increased content of free proline, and delayed stimulation of ethylene emission under increasing cold. The results of the current study on winter oilseed rape revealed that foliar application of PAs may activate a defensive response (act as elicitor to trigger physiological processes), which may compensate the negative impact of cold stress. Thus, cold tolerance of winter oilseed rape can be enhanced by PA treatment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Foliar Application of Polyamines Modulates Winter Oilseed Rape Responses to Increasing Cold

Jankovska-Bortkevič

Gavelienė

Šveikauskas

et al. 2020

Plants

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“…Exogenous polyamines have been proven to enhance polyamine accumulation and metabolism in plants, Similarly, application of Spd alone significantly elevated the endogenous free Spd content, and the increase in free Spd resulted in increases in free Put and Spm contents and soluble conjugated and insoluble bound Put, Spd and Spm contents compared with the control (Table ). Foliar spraying Put and Spm also enhanced the accumulation of endogenous polyamines and up‐regulation of polyamine biosynthetic genes . On the contrary, application of DCHA alone significantly reduced their contents (Table ).…”

Section: Discussionmentioning

confidence: 97%

“…Exogenous polyamines have been proven to improve seed emergence and performance and seedling growth of hot pepper . In drought‐stressed wheat, exogenous application of polyamines improved drought tolerance by enhancing cell water status, accumulating osmoprotectants and regulating endogenous polyamines and biosynthetic gene expression . In rats, exogenous polyamines modulated mucosal growth, epithelial cell proliferation and ontological differentiation, activated brush border proteins and changed the intestinal postnatal enzyme pattern .…”

Section: Introductionmentioning

confidence: 99%

Polyamines regulating phytic acid degradation in mung bean sprouts

et al. 2018

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“…PAs such as those encoded by the genome of B. subtilis PTA-271 are also described to protect plant cells upon water de cit [67], temperature changes [68] and salinity [69]. They are known to increase the activity of various antioxidant enzymes in plants and may contribute to produce H 2 O 2 as a signaling molecule that can activate plant antioxidant defense responses [69].…”

Section: Plant Induced Defenses Upon Abiotic Stressmentioning

confidence: 99%

Genome sequence analysis of the beneficial Bacillus subtilis PTA-271 isolated from a Vitis vinifera (cv. Chardonnay) rhizospheric soil: assets for sustainable biocontrol.

Leal

Fontaine

Aziz

et al. 2020

Preprint

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Background: Bacillus subtilis strains have been widely studied for their innumerous benefits in agriculture, including viticulture. Providing numerous assets, B. subtilis spp. are described as promising plant-protectors against many pathogens and as influencers to adaptations in a changing environment. This study reports the draft genome sequence of the beneficial Bacillus subtilis PTA-271, isolated from the rhizospheric soil of healthy Vitis vinifera cv. Chardonnay at Champagne Region in France, attempting to draw outlines of its full biocontrol capacity. Results: The PTA-271 genome has a size of 4,001,755 bp, with 43.78% of G + C content and 3,945 protein coding genes. The draft genome of PTA-271 highlights (1) a functional swarming motility system hypothesizing a colonizing capacity and a strong interacting capacity, (2) strong survival capacities and (3) a set of genes encoding for bioactive substances. Bioactive compounds are known both to (i) stimulate plant growth or defenses such as hormones and elicitors, (ii) influence beneficial microbiota, and (ii) counteract pathogen aggressiveness such as effectors and many kinds of detoxifying enzymes. Conclusions: The plurality of the encoded biomolecules by Bacillus subtilis PTA-271 genome appears as strengths for PTA-271 biocontrol potential towards plants, offering a big potential against a broad spectrum of pathogens despite environmental constraints.

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Exogenous applications of Polyamines modulate drought responses in wheat through osmolytes accumulation, increasing free polyamine levels and regulation of polyamine biosynthetic genes

Cited by 146 publications

References 55 publications

Foliar Application of Polyamines Modulates Winter Oilseed Rape Responses to Increasing Cold

Foliar Application of Polyamines Modulates Winter Oilseed Rape Responses to Increasing Cold

Polyamines regulating phytic acid degradation in mung bean sprouts

Genome sequence analysis of the beneficial Bacillus subtilis PTA-271 isolated from a Vitis vinifera (cv. Chardonnay) rhizospheric soil: assets for sustainable biocontrol.

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