Salicylic acid-induced adaptive response to copper stress in sunflower (Helianthus annuus L.)

El-Tayeb, Mohamed A.; El-Enany, A.E.; Ahmed, Naglaa L.

doi:10.1007/s10725-006-9118-2

Cited by 85 publications

(43 citation statements)

References 50 publications

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“…In general, increasing metal concentration in the soil exerts a severe effect on root growth (El-Tayeb et al 2006). In the present work, increasing metal contamination did not reduce white clover biomass and growth (Fig.…”

Section: Influence Of Pgpr Inoculation On Plant Growth In Presence Ofsupporting

confidence: 47%

Rhizobacteria isolated from a metal-polluted area enhance plant growth in zinc and cadmium-contaminated soil

Pereira

Barbosa

Castro

2014

Int. J. Environ. Sci. Technol.

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In this work, we evaluated the ability of rhizobacteria isolated from a metal-contaminated site to produce plant growth-promoting substances, such as indole-3-acetic acid (IAA), ammonia, hydrogen cyanide, siderophores and extracellular enzymes, to solubilize phosphate and for 1-aminocyclopropane-1-carboxylate (ACC)-deaminase activity, while assessing their capacity to enhance Trifolium repens growth. The rhizobacteria that better performed were used as bioinoculants for plants grown in zinc-and cadmium-spiked soils. Rhizobacteria were inoculated onto white clover seedlings growing in 250 and 500 mg kg -1 of zinc and in 10 and 30 mg kg -1 of cadmium-spiked soils and plant traits determined. The available and exchangeable rhizosphere metal concentrations were analyzed. Twenty rhizobacteria stimulated white clover growth under axenic conditions. Overall, strains Rhodococcus erythropolis EC 34, Achromobacter sp. 1AP2 and Microbacterium sp. 3ZP2 increased clover biomass in the absence and in presence of metals; however, in soils with 250 mg kg -1 of zinc, bacterial inoculation did not enhance plant biomass. Biomass enhancement may be related to the multiple bacterial promoting traits, especially the production of high levels of IAA and siderophores and the activity of ACC-deaminase. To the best of our knowledge, this is the first study reporting the potential of R. erythropolis to increase plant growth in metal-contaminated soils. In general, strains Microbacterium sp. 3ZP2 and Arthrobacter sp. EC 10 enhanced the available and exchangeable metal concentrations in rhizosphere showing their potential to improve phytoremediation efficiency. This work clearly indicates that rhizobacteria are promising for the development of bioinoculants useful for phytoremediation of polluted soils.

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Section: Influence Of Pgpr Inoculation On Plant Growth In Presence Ofsupporting

confidence: 47%

Rhizobacteria isolated from a metal-polluted area enhance plant growth in zinc and cadmium-contaminated soil

Pereira

Barbosa

Castro

2014

Int. J. Environ. Sci. Technol.

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“…This result is in accordance with the previous reports of in yam plants under triazole treatment. Similar results were found in SA treated sunflower plants (El-Tayeb et al, 2006).…”

Section: Resultssupporting

confidence: 86%

Propiconazole and Salicylic acid alleviate effect of drought stress in sorghum (Sorghum bicolor L. Moench) through biochemical and some physiological characters.

Arivalagan¹,

Somasundaram²

2016

jaar

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In this study, the protective role of propiconazole (PCZ) and salicylic acid (SA) in relation to biochemical content and some physiological parameters were investigated in drought stressed Sorghum bicolor plants. The pot culture experiment was carried out on Botanical garden, Deportment of Botany, Annamalai University. A 30 Days After Sowing (DAS) plants were subjected to 3, 6, and 9 Days Interval Drought (DID) stress and drought with PCZ at 1 mM and drought with SA at 1 mM at 30, 40, and 50 DAS. The plants irrigated regularly in alternate day interval were kept as control. The plant samples were collected on 60, 70, and 80 DAS from all the treatments. The biochemical contents like starch and sucrose, then physiological parameter like Relative Water Content (RWC) and Electrolyte Leakage (EL) were analysed. Under the drought stress reduced starch and RWC was observed then, sucrose and EL content were increased. The drought with growth regulator treated plants starch and RWC was reduced then, sucrose and EL was increased but it was lower than that of control. Together, our findings demonstrate that, PCZ and SA is an efficient growth regulator with diversified roles that contribute to its potential alleviating effect against drought stress.

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“…Copper toxicity also can decrease the root hair number and cell proliferation (ElTayeb et al, 2006). El-Tayeb et al (2006) revealed that root growth of sunflower decreased and apical dominance disappeared due to root meristem cell death in higher copper stress; subsequently to maintain the survival of plants and absorb water and nutrients, the secondary root number increased, the similarity of that we found in lettuce. A significant reduction in SVI was seen when the seeds were treated with a high copper concentration in comparison to the seeds that treated with water (Fig.…”

Section: Seed Vigor Index (Svi)supporting

confidence: 73%

Nitric Oxide Alleviates Copper Toxicity in Germinating Seed and Seedling Growth of Lactuca sativa L.

Shams

Yıldırım

Ağar

et al. 2018

Not Bot Horti Agrobo

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Copper has many metabolic functions in the plants. However, it can be toxic to plants where it reaches the excess level. The aim of the present study was to evaluate the role of nitric oxide treatments on lettuce seed germination under copper stress. Thus a factorial laboratory experiment with a completely randomized design was carried out at the Ataturk University. Treatments include different doses of copper (0, 50, 100, 150 and 200 µM of copper sulfate) and nitric oxide (0, 50, 100, 150, 200 and 300 µM of sodium nitroprusside). The results of this study monitored that high concentration of copper (100, 200 and 300 µM) had a significant effect on the germination percentage, germination rate, mean period of ultimate germination, seed vigor index, seedling fresh weight and allometry coefficient, although the nitric oxide treatment (without copper) had not a significant effect on the seeds in comparing to the untreated ones. Copper treatment decreased the investigated parameters, but the simultaneous application of nitric oxide and copper had a positive impact. The results of this study suggested that nitric oxide treatments have been beneficial upon the seeds that treated with copper, but not upon the seeds that treated with water. In addition, the lower concentration of copper (50 µM) had a positive effect on the seed vigor index.

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Salicylic acid-induced adaptive response to copper stress in sunflower (Helianthus annuus L.)

Cited by 85 publications

References 50 publications

Rhizobacteria isolated from a metal-polluted area enhance plant growth in zinc and cadmium-contaminated soil

Rhizobacteria isolated from a metal-polluted area enhance plant growth in zinc and cadmium-contaminated soil

Propiconazole and Salicylic acid alleviate effect of drought stress in sorghum (Sorghum bicolor L. Moench) through biochemical and some physiological characters.

Nitric Oxide Alleviates Copper Toxicity in Germinating Seed and Seedling Growth of Lactuca sativa L.

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