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Exogenously applied spermidine alleviates photosynthetic inhibition under drought stress in maize (Zea mays L.) seedlings associated with changes in endogenous polyamines and phytohormones.

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Drought stress (DS) is a major environmental factor limiting plant growth and crop productivity worldwide. It has been established that exogenous spermidine (Spd) stimulates plant tolerance to DS. The effects of exogenous Spd on plant growth, photosynthetic performance, and chloroplast

Bacillus zeae sp. nov., isolated from the rhizosphere of Zea mays.

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A Gram-positive-staining, aerobic organism, isolated from the rhizosphere of Zea mays, was investigated in detail. Based on 16S rRNA gene sequence similarity comparisons, strain JJ-247T was grouped into the genus Bacillus, most closely related to Bacillus foraminis (98.4 %). The 16S rRNA gene

Effect of fluazifop-p-butyl treatment on pigments and polyamines level within tissues of non-target maize plants.

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Fluazifop-p-butyl (FL) is one of the most popular graminicides from arylophenoxypropionate group. These herbicides act as inhibitors of acetyl-CoA carboxylase (ACCase) that catalyzes the formation of malonyl-CoA during metabolism of lipids and/or of some secondary compounds. On the other hand

A Zea mays 39-kDa thylakoid transglutaminase catalyses the modification by polyamines of light-harvesting complex II in a light-dependent way.

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A transglutaminase (TGase; EC 2.3.2.13) activity, which shared many properties with the TGase activity of the Helianthus tuberosus chloroplast, was observed in the Zea mays L. chloroplast and in its fractions. This activity was found to be prevalent in thylakoids; bis-(glutamyl) spermidine and

Effect of Exogenous Putrescine, Spermidine, and Spermine on K Uptake and H Extrusion through Plasmamembrane in Maize Root Segments.

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The action of exogenous polyamines (putrescine, spermidine, and spermine) on ;washing' and fusicoccin-stimulated K(+) uptake and H(+) extrusion through the plasmamembrane in maize (Zea mays L., hybrid line Plenus S 516) root apical segments was studied. The results showed that polyamines inhibit the

Premalignant alterations in rat colonic N1-acetylspermidine levels induced by 1,2-dimethylhydrazine: effects of a high corn oil dietary regimen.

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Recently, our laboratory has demonstrated that elevations in the levels of N1-acetylspermidine could be detected in the colonic mucosa of rats after administration of 1,2-dimethylhydrazine for 15 weeks, i.e., before the development of colon tumors. Since prior studies have indicated that diets high

Modulation of spermidine and spermine levels in maize seedlings subjected to long-term salt stress.

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Salinity is one of the major abiotic stresses affecting plant agriculture worldwide. Polyamines, a group of aliphatic amines, are known to accumulate under salt stress conditions in different plant systems, resulting in presumed protective effects, acting as free radical scavengers, stabilizing

Codon usage bias analysis for the spermidine synthase gene from Camellia sinensis (L.) O. Kuntze.

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The spermidine synthase (SPDS) gene exists widely in all types of plants. In this paper, the codon usage of the SPDS gene from Camellia sinensis (CsSPDS) was analyzed. The results showed that the codon usage of the CsSPDS gene is biased towards the T-ended or A-ended codons, which is similar to that

Nocardioides zeae sp. nov., isolated from the stem of Zea mays.

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A Gram-stain-positive aerobic organism, isolated from the healthy stem of a Zea mays plant was studied for its taxonomic position. Based on 16S rRNA gene sequence analysis strain JM-1068(T) was most closely related to Nocardioides alkalitolerans (97.2%). The 16S rRNA gene sequence similarity to all

Cohnella rhizosphaerae sp. nov., isolated from the rhizosphere environment of Zea mays.

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A Gram-staining-positive, aerobic, non-endospore forming organism, isolated as a seed endophyte (colonizing the internal healthy tissue of plant seed) of sweet corn (Zea mays), strain CSE-5610T, was studied for its taxonomic allocation. On the basis of 16S rRNA gene sequence comparisons, strain

γ-Aminobutyric acid confers cadmium tolerance in maize plants by concerted regulation of polyamine metabolism and antioxidant defense systems.

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Gamma-Aminobutyric acid (GABA) accumulates in plants following exposure to heavy metals. To investigate the role of GABA in cadmium (Cd) tolerance and elucidate the underlying mechanisms, GABA (0, 25 and 50 µM) was applied to Cd-treated maize plants. Vegetative growth parameters were improved in

Paenibacillus rhizoplanae sp. nov., isolated from the rhizosphere of Zea mays.

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A Gram-stain-positive, aerobic, endospore-forming bacterial strain isolated from the rhizosphere of Zea mays was studied to determine its detailed taxonomic position. Based on 16S rRNA gene sequence similarity comparisons, strain JJ-64T was shown to be a member of the genus Paenibacillus, most

Spermidine-binding proteins. Purification and expression analysis in maize.

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Polyamine-binding proteins have been identified in a wide range of organisms, including mammals, yeasts, and bacteria. In this work, we have investigated specific spermidine binding to plant membrane proteins purified from microsomes of etiolated maize (Zea mays) coleoptiles. In the final

Boron deprivation decreases liver S-adenosylmethionine and spermidine and increases plasma homocysteine and cysteine in rats.

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Two experiments were conducted with weanling Sprague-Dawley rats to determine whether changes in S-adenosylmethionine utilization or metabolism contribute to the diverse responses to boron deprivation. In both experiments, four treatment groups of 15 male rats were fed ground corn-casein based diets

Beneficial Rhizobacterium Bacillus amyloliquefaciens SQR9 Induces Plant Salt Tolerance through Spermidine Production.

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The inoculation of plants with plant-growth-promoting rhizobacterium has been an effective strategy for enhancing plant salt tolerance to diminish the loss of agricultural productivity caused by salt stress; however, the signal transmitted from bacteria to the plant under salt stress is poorly

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