Exogenous salicylic acid application against mitodepressive and clastogenic effects induced by salt stress in barley apical meristems

Tabur, Selma; Avci, Zeynep D.; Özmen, Serkan

doi:10.2478/s11756-020-00573-0

Cited by 6 publications

(3 citation statements)

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“…SA has been shown to affect membrane permeability, bud growth, growth rate, stomatal closure, mitochondrial respiration, material transfer, photosynthesis, and ion absorption. Because of this, SA plays an essential role in mediating plants’ adaptive responses to salinity [ 52 , 194 ], and controls membrane permeability (hence, ion uptake and transport) [ 195 ]. It also maintains redox homeostasis in cells under salt stress conditions [ 196 , 197 , 198 ] ( Figure 2 ).…”

Section: Effects Of Plant Growth Regulators On Plant Performance Under Saline Conditionsmentioning

confidence: 99%

Improving Performance of Salt-Grown Crops by Exogenous Application of Plant Growth Regulators

et al. 2021

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Soil salinity is one of the major abiotic stresses restricting plant growth and development. Application of plant growth regulators (PGRs) is a possible practical means for minimizing salinity-induced yield losses, and can be used in addition to or as an alternative to crop breeding for enhancing salinity tolerance. The PGRs auxin, cytokinin, nitric oxide, brassinosteroid, gibberellin, salicylic acid, abscisic acid, jasmonate, and ethylene have been advocated for practical use to improve crop performance and yield under saline conditions. This review summarizes the current knowledge of the effectiveness of various PGRs in ameliorating the detrimental effects of salinity on plant growth and development, and elucidates the physiological and genetic mechanisms underlying this process by linking PGRs with their downstream targets and signal transduction pathways. It is shown that, while each of these PGRs possesses an ability to alter plant ionic and redox homeostasis, the complexity of interactions between various PGRs and their involvement in numerous signaling pathways makes it difficult to establish an unequivocal causal link between PGRs and their downstream effectors mediating plants’ adaptation to salinity. The beneficial effects of PGRs are also strongly dependent on genotype, the timing of application, and the concentration used. The action spectrum of PGRs is also strongly dependent on salinity levels. Taken together, this results in a rather narrow “window” in which the beneficial effects of PGR are observed, hence limiting their practical application (especially under field conditions). It is concluded that, in the light of the above complexity, and also in the context of the cost–benefit analysis, crop breeding for salinity tolerance remains a more reliable avenue for minimizing the impact of salinity on plant growth and yield. Further progress in the field requires more studies on the underlying cell-based mechanisms of interaction between PGRs and membrane transporters mediating plant ion homeostasis.

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Section: Effects Of Plant Growth Regulators On Plant Performance Under Saline Conditionsmentioning

confidence: 99%

Improving Performance of Salt-Grown Crops by Exogenous Application of Plant Growth Regulators

et al. 2021

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“…Today, approximately 23% of the total irrigated agricultural land is affected by high salinity due to the artificial irrigation methods used in modern agriculture 9 . Various morphological, anatomical, physiological, cytogenetic and biochemical responses may occur in plants exposed to salt stress 10 – 13 . In addition, it causes osmotic and oxidative stresses by increasing formation of reactive oxygen species (ROS) including free radicals, hydrogen peroxide and singlet oxygen 14 – 16 .…”

Section: Introductionmentioning

confidence: 99%

Modulation of NaCl-induced osmotic, cytogenetic, oxidative and anatomic damages by coronatine treatment in onion (Allium cepa L.)

Çavuşoğlu

2023

Sci Rep

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Coronatine (COR), a bacterial phytotoxin produced by Pseudomonas syringae, plays important roles in many plant growth processes. Onion bulbs were divided four groups to investigate the effects of COR against sodium chloride (NaCl) stress exposure in Allium cepa L. root tips. While control group bulbs were soaked in tap water medium, treatment group bulbs were grown in 0.15 M NaCl, 0.01 µM COR and 0.01 µM COR + 0.15 M NaCl medium, respectively. NaCl stress seriously inhibited the germination, root lenght, root number and fresh weight of the bulbs. It significantly decreased the mitotic index (MI), whereas dramatically increased the micronucleus (MN) frequency and chromosomal aberrations (CAs). Moreover, in order to determine the level of lipid peroxidation occurring in the cell membrane, malondialdehyde (MDA) content was measured and it was determined that it was at the highest level in the group germinated in NaCl medium alone. Similarly, it was revealed that the superoxide dismutase (SOD), catalase (CAT) and free proline contents in the group germinated in NaCl medium alone were higher than the other groups. On the other hand, NaCl stress caused significant injuries such as epidermis/cortex cell damage, MN formation in epidermis/cortex cells, flattened cells nuclei, unclear vascular tissue, cortex cell wall thickening, accumulation of certain chemical compounds in cortex cells and necrotic areas in the anatomical structure of bulb roots. However, exogenous COR application significantly alleviated the negative effects of NaCl stress on bulb germination and growth, antioxidant defense system, cytogenetic and anatomical structure. Thus, it has been proven that COR can be used as a protective agent against the harmful effects of NaCl on onion.

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“…Salinity affects crops in two ways; by osmotic stress caused by high concentrations of salts in the soil, which make it harder for roots to absorb water, and by ion stress caused by an increased levels of soluble salts within the plant cells caused by exchangeable sodium (Na + ) during salinity stress (Munns et al, 2020). The impacts of salt stress on plants vary greatly depending on the type and dose of salt used, environmental factors, plant species, cultivars within a species, and plant development stages (Tabur, Avci, & Özmen, 2021). The osmotic stress induces formation of harmful free radicals, including reactive oxygen species (ROS) which causes oxidative damages and induces negative effects on the cell functional integrity (Gaafar, Hamouda, & Badr, 2016;Sharma, Jha, Dubey, & PessarakliM, 2012).…”

Section: Introductionmentioning

confidence: 99%

Effects of γ-radiation on chickpea (Cicer arietinum) varieties and their tolerance to salinity stress

ABDOUN

Mekki

Hamwieh

et al. 2022

AAS

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<p class="042abstractstekst">Chickpea (<em>Cicer arietinum </em>L.) is a bisexual and self-pollinated legume. It improves the soil fertility through its natural ability to fix atmospheric nitrogen with its symbiotic bacteria. Salinity is one of the most important abiotic stress factors affecting plant growth. γ-radiation is a very effective tool for inducing mutations in many plants. This study evaluated the γ-radiation effect on germination, cell division and plant growth of first-generation plants. Seeds of seven chickpea varieties were irradiated with γ-radiation doses ranging between 50 Gy and 600 Gy. Non-significant differences in germination percentage were recorded for seeds exposed to 50 Gy, 100 Gy, and 200 Gy of γ-radiation in comparison to the corresponding controls except ILC 484. The mitotic index (MI) of root cells increased at the low doses of 50 Gy, 100 Gy and 200 Gy comparing and reduced at the higher doses in all chickpea varieties to the control. All doses of γ-radiation induced a variable range of chromosomal abnormalities; the most common were bridges, laggard chromosomes, stickiness at metaphase, chromosome breaks, micronuclei and binucleate cells. The 300 Gy to 600 Gy doses induced degradation of nuclear membranes. The salinity treatments at 25 mM NaCl and 60 mM NaCl reduced seedling’s growth of all cultivars. The dose of 100 Gy alleviated the impact of salinity at a concentration of 25 mM NaCl for all varieties, except FLIP 84-188 and FLIP 97-263. The 60 mM NaCl treatment significantly reduced early growth of all cultivars and its effect was not alleviated by the γ-radiation.</p>

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Exogenous salicylic acid application against mitodepressive and clastogenic effects induced by salt stress in barley apical meristems

Cited by 6 publications

References 60 publications

Improving Performance of Salt-Grown Crops by Exogenous Application of Plant Growth Regulators

Improving Performance of Salt-Grown Crops by Exogenous Application of Plant Growth Regulators

Modulation of NaCl-induced osmotic, cytogenetic, oxidative and anatomic damages by coronatine treatment in onion (Allium cepa L.)

Effects of γ-radiation on chickpea (Cicer arietinum) varieties and their tolerance to salinity stress

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