Effects of salt stress on some physiological parameters and mineral element contents of onion (<i>Allium cepa</i>L.) plants

Hancı, Fatih; Cebeci, Esra; Uysal, E.; Daşgan, Hayriye

doi:10.17660/actahortic.2016.1143.26

Cited by 8 publications

(11 citation statements)

References 20 publications

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“…The increase in pH by increasing salinity occurred due to increased intra- and intercellular concentrations of cations, especially Na + [ 19 ]. In general, high cellular concentrations of cations trigger programs of synthesis for organic anions in the leaves for the buffering of excess cations absorbed by the roots [ 56 ].…”

Section: Discussionmentioning

confidence: 99%

“…Studies have examined that plants under salt stress increase their sugars, proline, betaine, glycine, polyamines, ascorbate, glutathione, tocopherols, carotenoids, thiols, and flavonoid levels in tissues; on the other hand, they decrease fresh bulb weight, production of large bulbs, bulb yield, the quality of onion bulbs, bulb firmness and bulb pH [ 12 , 13 , 14 , 15 , 16 , 17 ]. The literature reveals that salt stress alters production levels of proline, phenolic compounds, and pyruvic acid precursors in onions [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Salinity and Silicon Doses on Onion Post-Harvest Quality and Shelf Life

Venâncio

Dias

Medeiros

et al. 2022

Plants

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Salt stress during pre-harvest limits the shelf life and post-harvest quality of produce; however, silicon nutrition can mitigate salt stress in plants. Thus, we evaluated the effects of salinity and fertilization with Si, in pre-harvest, on the morpho-physiological characteristics of onion bulbs during shelf life. The experiment was set up in randomized complete blocks, with treatments arranged in split-split plots. The plots had four levels of electrical conductivity of irrigation water (0.65, 1.7, 2.8, and 4.1 dS m−1). The subplots had five fertilization levels with Si (0, 41.6, 83.2, 124.8, and 166.4 kg ha−1). The sub-sub plots had four shelf times (0, 20, 40, and 60 days after harvest). Irrigation water salinity and shelf time reduced firmness and increased the mass loss of onion bulbs during shelf life. Salt stress reduced the contents of sugars and total soluble solids of onion bulbs during storage; however, Si supply improved the contents of these variables. Salinity, Si supply, and shelf time increased the concentrations of pyruvic and ascorbic acids in onion bulbs during shelf life. Si doses between 121.8 and 127.0 kg ha−1 attenuated the impacts caused by moderate salinity, increasing the synthesis of metabolites and prolonging the onion bulbs’ shelf life.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Salinity and Silicon Doses on Onion Post-Harvest Quality and Shelf Life

Venâncio

Dias

Medeiros

et al. 2022

Plants

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“…Three levels of salinity were obtained by watering soils with solutions containing increasing NaCl concentrations: no salinity (0 mmol L −1 ; pH 5.67 ± 0.26; EC 0.01 ± 0.003 mS cm −1 ), moderate salinity (60 mmol L −1 ; pH 5.77 ± 0.01; EC 3.56 ± 0.075 mS cm −1 ), and high salinity (120 mmol L −1 ; pH 5.78 ± 0.05; EC 6.53 ± 0.052 mS cm −1 ). The selected NaCl concentrations were similar to those (0–125 mmol L −1 ) in studies exploring the effect of salt stress on onion plants . Additionally, three levels of increasing drought were obtained: no drought (100% WRC), moderate drought (50% WRC), and severe drought (25% WRC).…”

Section: Methodsmentioning

confidence: 99%

“…The selected NaCl concentrations were similar to those (0-125 mmol L −1 ) in studies exploring the effect of salt stress on onion plants. 64 Additionally, three levels of increasing drought were obtained: no drought (100% WRC), moderate drought (50% WRC), and severe drought (25% WRC).…”

Section: Experimental Set-upmentioning

confidence: 99%

Influence of Acacia dealbata Link bark extracts on the growth of Allium cepa L. plants under high salinity conditions

et al. 2019

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BACKGROUND Acacia dealbata Link is an invasive plant worldwide. Finding potential uses for its waste that contribute to controling its spread and result in benefits for agriculture has recently become a new topic of research. This study aimed to evaluate the potential biostimulant effect of bark extract derived from the management of A. dealbata (0, 450 or 900 ppm) on onion plants growing under stressful conditions, such as in soils treated with saline solutions (0, 60 or 120 mmol L−1 NaCl) and with reduced irrigation (100%, 50% or 25%). RESULTS A. dealbata Link bark extract significantly increased height as well as leaf, root and total biomass of plants in soils irrigated with NaCl solution (120 mmol L−1). These plants also had a higher content of Cl in roots, but a lower content of P in leaves and of K in bulbs. The 450 ppm bark treatment additionally increased the protein content in leaves and decreased the Na and Mg content in bulbs and bulbs and roots, respectively. The bark extract also increased the sugar content in plants under saline conditions. However, the effect of bark extract was negligible on plants that grew under drought stress. CONCLUSION Results revealed that the bark extract might attenuate stress effects in plants growing at high salinity levels, probably by increasing their sugar and protein content and via the accumulation of ions in the roots. Although additional experiments are required, we suggest that the bark extract of A. dealbata has potential applications in agriculture concerned with biostimulant formulations. © 2019 Society of Chemical Industry

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“…Recent work has demonstrated that water stress severely altered the physiological parameters of onion genotypes when imposed during the developmental stage for 25 consecutive days [ 85 , 91 ]. Photosynthetic pigments such as chlorophyll a, chlorophyll b, and carotenoids decreased in leaves when drought stress of 10–20 days was imposed on onion seedlings transplanted in pots and greenhouses [ 83 , 92 , 93 ]. This reduction in assimilative pigment levels during the growth phase causes a decrease in the photosynthetic activity, resulting in low organic matter synthesis in onion plants [ 84 ].…”

Section: Effects Of Drought On Onionsmentioning

confidence: 99%

Onion (Allium cepa L.) and Drought: Current Situation and Perspectives

Sansan,

Ezin,

Ayenan

et al. 2024

Scientifica

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Onions (Allium cepa L.) are the second most commonly produced and consumed vegetable worldwide due to their economic, nutritional, and medicinal benefits. However, drought hinders vegetative growth, lowers yields and bulb quality, reduces photosynthetic activity, and alters the onion plant’s metabolism. This review provides a summary of global research on the impact of drought on onions. It specifically seeks to shed light on aspects that remain unclear and generate research avenues. Relevant scientific articles were sourced from the AGORA database, Web of Science (WoS), and search engines such as Google Scholar, Scopus, MEDLINE/PubMed, and SCImago to achieve this objective. A total of 117 scientific articles and documents related to onion and drought were critically examined. The review revealed agromorphological, physiological, biochemical, and genomic studies depicting factors that contribute to drought tolerance in onion genotypes. However, there was little research on the physiological, biochemical, and genetic characteristics of drought tolerance in onions, which need to be deepened to establish its adaptation mechanisms. Understanding the mechanisms of onion response to water stress will contribute to fast-tracking the development of drought-tolerant genotypes and optimize onion production. Future research should be more focused on investigating onion drought tolerance mechanisms and structural and functional genomics and identifying genes responsible for onion drought tolerance.

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Effects of salt stress on some physiological parameters and mineral element contents of onion (Allium cepaL.) plants

Cited by 8 publications

References 20 publications

Effect of Salinity and Silicon Doses on Onion Post-Harvest Quality and Shelf Life

Effect of Salinity and Silicon Doses on Onion Post-Harvest Quality and Shelf Life

Influence of Acacia dealbata Link bark extracts on the growth of Allium cepa L. plants under high salinity conditions

Onion (Allium cepa L.) and Drought: Current Situation and Perspectives

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