Polyamines in Horticulturally Important Plants

Faust, Miklos; Wang, Shiow Y.

doi:10.1002/9780470650523.ch7

Cited by 18 publications

(15 citation statements)

References 75 publications

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“…Spermine and spermidine are synthesized from putrescine by the addition of aminopropyl groups transferred from decarboxylated S-adenosylmethionine (SAM). SAM is also an intermediate of ethylene biosynthesis, suggesting a potential relationship between PA and ethylene biosynthesis (Faust and Wang, 1993). Cadaverine is synthesized from lysine by lysine decarboxylase (LDC) (Bagni and Tassoni, 2001;Flores et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

Increased Polyamine Biosynthesis Enhances Stress Tolerance by Preventing the Accumulation of Reactive Oxygen Species: T-DNA Mutational Analysis of Oryza sativa Lysine Decarboxylase-like Protein 1

Jang

Choi

et al. 2012

Molecules and Cells

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A highly oxidative stress-tolerant japonica rice line was isolated by T-DNA insertion mutation followed by screening in the presence of 50 mM H 2 O 2 . The T-DNA insertion was mapped to locus Os09g0547500, the gene product of which was annotated as lysine decarboxylase-like protein (GenBank accession No. AK062595). We termed this gene OsLDC-like 1, for Oryza sativa lysine decarboxylase-like 1. The insertion site was in the second exon and resulted in a 27 amino acid N-terminal deletion. Despite this defect in OsLDC-like 1, the mutant line exhibited enhanced accumulation of the polyamines (PAs) putrescine, spermidine, and spermine under conditions of oxidative stress. The generation of reactive oxygen species (ROS) in the mutant line was assessed by qRT-PCR analysis of NADPH oxidase (RbohD and RbohF), and by DCFH-DA staining. Cellular levels of ROS in osldc-like 1 leaves were significantly lower than those in the wild-type (WT) rice after exposure to oxidative, high salt and acid stresses. Exogenouslyapplied PAs such as spermidine and spermine significantly inhibited the stress-induced accumulation of ROS and cell damage in WT leaves. Additionally, the activities of ROS-detoxifying enzymes were increased in the homozygous mutant line in the presence or absence of H 2 O 2 . Thus, mutation of OsLDC-like 1 conferred an oxidative stress-tolerant phenotype. These results suggest that increased cellular PA levels have a physiological role in preventing stress-induced ROS and ethylene accumulation and the resultant cell damage.

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Section: Introductionmentioning

confidence: 99%

Increased Polyamine Biosynthesis Enhances Stress Tolerance by Preventing the Accumulation of Reactive Oxygen Species: T-DNA Mutational Analysis of Oryza sativa Lysine Decarboxylase-like Protein 1

Jang

Choi

et al. 2012

Molecules and Cells

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“…Also levels of anti‐oxidants (α‐tocopherol, β‐carotene and ascorbic acid) were increased by UV‐C treatment (310 nm, 5 min) in several green vegetables (Higashio et al ., 1999). It has been reported that the accumulation of the polyamines, putrescine, and spermidine, could be considered as an indicator of stresses on fruit including low temperature storage (Faust & Wang, 1993). The effect of imposition of UV‐C stress on polyamine content is not well known.…”

Section: Introductionmentioning

confidence: 99%

Use of UV‐C irradiation to prevent decay and maintain postharvest quality of ripe ‘Tommy Atkins’ mangoes

González‐Aguilar

Wang

Buta

et al. 2001

Int J of Food Sci Tech

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Ripe mangoes`Tommy Atkins' were exposed to UV-C irradiation for 10 and 20 min, prior to storage for 14 days at 5 or 20°C and a shelf-life period of 7 days at 20°C. UV-C-treated fruit maintained better visual appearance than unirradiated controls. UV-C irradiation for 10 min was the most eective regime in suppressing decay symptoms and maintaining ®rmness during storage at 5 or 20°C. Such fruit (treated with UV-C for 10 min) showed greater levels of putrescine and spermidine after cold storage than controls and those treated with UV-C for 20 min. Higher levels of sugars and lower levels of organic acids were observed in mangoes treated with UV-C for 20 min. However, the most eective UV-C treatment (10 min) for reducing decay maintained sugar and organic acid levels similar to the controls. No UV-damage was observed on treated fruits after storage. These results indicate that UV-C irradiation could be used as an eective and rapid method to preserve the postharvest life of ripe mangoes without adversely aecting certain quality attributes.

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“…The findings of present study indicated that putrescine with glutamine (in liquid and solid media), and with spermidine (in solid media) produced highest number of embryos and were statistically alike. Polyamines also known to inhibit ethylene biosynthesis, which considered as a potent inhibitor of embryogenesis and morphogenesis (Kumar et al, 2008;Faust and Wang, 2010). S-adenosylmethionine (SAM) is the common precursor for both polyamines and ethylene.…”

Section: Int J Biosci 2018mentioning

confidence: 99%

Somatic embryogenesis enhancement of date palm cultivar Sewi using different types of polyamines and glutamine amino acid concentration under in-vitro solid and liquid media conditions

2018

Int. J. Biosci.

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Date palm is traditionally propagated by ground off-shoots, which are in a limited number and varied with the cultivar. The production of date palm through tissue culture is well established due to the advantages of rapid clonal production, genetically uniformity and pathogen-free plants. The source explants are grown in a solid or liquid media. The media formulation and amendments play a vital role to establish a successful tissue culture protocol for explant regeneration and multiplication. Therefore, the rational of present study was to enhance somatic embryos induction of date palm cv. Sewi from embryonic callus during maturation stage by adding polyamines and glutamine amino acid concentrations in solid or liquid media. Two types of polyamines, putrescine and spermidine (each at 100 mg.L -1 concentration) along with basic concentration of glutamine amino acid (B) (200 mg.L -1 ) or with the extra addition of glutamine concentration (EA) (100 mg.L -1 ) were included in the study to develop micropropagation cycle of date palm plantlets. Explants cultured on solid media showed excellent embryonic callus whereas liquid media was best for somatic embryos induction. The quantitative observation indicated that maximum number of somaticembryos (32.33) were counted in liquid mediacontaining glutamine (EA) with putrescine. On the other hand, highest embryonic callus fresh weight was produced by the explants contained spermidinealone (5.49 g) and glutamine (EA) + spermidine (5.30 g) in solid media. It was concluded that putrescine with glutamine (EA) orits combination with spermidinealong with glutamine (B) in the solid or liquid in-vitromedia were the best for embryonic callus maturation to enhance the somatic embryogenesis of date palm cv. Sewi.

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Polyamines in Horticulturally Important Plants

Cited by 18 publications

References 75 publications

Increased Polyamine Biosynthesis Enhances Stress Tolerance by Preventing the Accumulation of Reactive Oxygen Species: T-DNA Mutational Analysis of Oryza sativa Lysine Decarboxylase-like Protein 1

Increased Polyamine Biosynthesis Enhances Stress Tolerance by Preventing the Accumulation of Reactive Oxygen Species: T-DNA Mutational Analysis of Oryza sativa Lysine Decarboxylase-like Protein 1

Use of UV‐C irradiation to prevent decay and maintain postharvest quality of ripe ‘Tommy Atkins’ mangoes

Somatic embryogenesis enhancement of date palm cultivar Sewi using different types of polyamines and glutamine amino acid concentration under in-vitro solid and liquid media conditions

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