Role of Potassium Nitrate (KNO&lt;sub&gt;3&lt;/sub&gt;) in Alleviation of Detrimental Effects of Salt Stress on Some Physiological and Cytogenetical Parameters in &lt;i&gt;Allium cepa&lt;/i&gt; L.

Çavuşoğlu, Kürşat; Cadıl, Sevilay; Çavuşoğlu, Dilek

doi:10.1508/cytologia.82.279

Cited by 16 publications

(10 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The inhibitory and cytotoxic effects of salt stress on the mitotic activity are known for a long time [22]. According to some researchers, high salt concentration causes to total inhibition of mitotic activity, micronucleus frequency and chromosomal abnormalities in root-tip cells [23,24]. On the other hand, proline+NaCl application (Group IV) showed a perfectly good performance in ameliorating the negative effects of salinity on the mitotic index (4.8%).…”

Section: Resultsmentioning

confidence: 99%

Functions of Exogenously Proline against Negative Effects of Salt Stress in Onion (Allium cepa L.)

Çavuşoğlu¹,

Çavuşoğlu²

2020

IJEAB

Self Cite

View full text Add to dashboard Cite

The effects of proline on the seed germination, seedling growth (radicle lenght, radicle number and fresh weight), mitotic index, micronucleus frequency and chromosome aberrations of Allium cepa L. germinated under saline conditions were examined in this study. Salt stress markedly inhibited the seed germination and seedling growth of A. cepa L. Moreover, it reduced the mitotic index in the root-meristem cells of the seeds and fairly increased the number of chromosome aberrations and micronucleus frequency which is the simplest indicator, the most effective of cytological damage. On the other, the inhibitive effect of salt stress on the seed germination, fresh weight and mitotic index was significantly decreased with proline application. However, this amino acid was ineffective in reducing of salt damage on the radicle lenght, radicle number, micronucleus frequency and chromosome aberrations.

show abstract

Section: Resultsmentioning

confidence: 99%

Functions of Exogenously Proline against Negative Effects of Salt Stress in Onion (Allium cepa L.)

Çavuşoğlu¹,

Çavuşoğlu²

2020

IJEAB

Self Cite

View full text Add to dashboard Cite

show abstract

“…This result revealed an aberration in the mitotic stage of the onion cell when compared to the control. This aberration was referred to as 'irregular anaphase' by Çavuşoğlu et al [28]. The effects of lamivudine on Allium cepa Figure 5a showed untreated onion root tips exposed to tap water (control) compared to onion root tips treated with 100 µg/L lamivudine test solution in Figure 5b.…”

Section: Allium Cepa Root Assaymentioning

confidence: 95%

“…The squashed onion root tips were thereafter imaged using a LEICA DM-750 light microscope at 400× and 1000× magnification. Qualitative analysis was carried out by observing the abnormalities of the onion chromosomes as reported by Çavuşoglu et al [28] and comparing them to control chromosomes.…”

Section: Allium Cepa Root Tip Assay (Onion Root)mentioning

confidence: 99%

Environmental Risk Characterization of an Antiretroviral (ARV) Lamivudine in Ecosystems

Omotola

Genthe

Ndlela

et al. 2021

IJERPH

View full text Add to dashboard Cite

Antiretroviral drugs for the treatment of human immunodeficiency virus (HIV) and other viral infections are among the emerging contaminants considered for ecological risk assessment. These compounds have been reported to be widely distributed in water bodies and other aquatic environments, while data concerning the risk they may pose to unintended non-target species in a different ecosystem (environment) is scanty. In South Africa and other developing countries, lamivudine is one of the common antiretrovirals applied. Despite this, little is known about its environmental impacts as an emerging contaminant. The present study employed a battery of ecotoxicity bioassays to assess the environmental threat lamivudine poses to aquatic fauna and flora. Daphnia magna (filter feeders), the Ames bacterial mutagenicity test, Lactuca sativa (lettuce) germination test, and the Allium cepa root tip assay were conducted, testing lamivudine at two concentrations (10 and 100 µg/L), with environmental relevance. The Daphnia magna toxicity test revealed a statistically significant response (p << 0.05) with a mortality rate of 85% on exposure to 100 µg/L lamivudine in freshwater, which increased to 100% at 48-h exposure. At lower concentrations of 10 µg/L lamivudine, 90% and 55% survival rates were observed at 24 h and 48 h, respectively. No potential mutagenic effects were observed from the Ames test at both concentrations of lamivudine. Allium cepa bioassays revealed a noticeable adverse impact on the root lengths on exposure to 100 µg/L lamivudine. This impact was further investigated through microscopic examination, revealing some chromosomal aberration in the exposed Allium cepa root tips. The Lactuca sativa bioassay showed a slight adverse impact on both the germination rate of the seeds and their respective hypocotyl lengths compared to the control. Overall, this indicates that lamivudine poses an ecological health risk at different trophic levels, to both flora and fauna, at concentrations previously found in the environment.

show abstract

“…Results of this study showed that the radicle number and radicle length of the bulbs germinated in only GTLE treatment were partially reduced but their fresh weight and germination percentages of the mentioned bulbs statistically showed the same values compared to those of the control bulbs germinated in distilled water (Table 1). Moreover, some growth regulators may cause particularly cell disortions, chromosomal aberrations and mitotic irregularities especially if stress conditions aren't present [13,14]. Although a number of researchers state that some plant extracts that have been widely used in recent years have significant mutagenic effects [15], there is no extent study relating to the impacts of GTLE on the chromosomal abnormalities, micronucleus frequency and mitotic activity subject to nonstress conditions.…”

Section: Physiological and Cytogenetical Effects Of Green Tea Leaf Exmentioning

confidence: 99%

The Effects of Green Tea Leaf Extract on Cytogenetical and Physiological Parameters of Allium cepa L. exposed to Salinity

Çavuşoğlu¹

2020

Sakarya University Journal of Science

Self Cite

View full text Add to dashboard Cite

The aim of this study investigated the effects of 50 mg L-1 green tea leaf extract in decreasing harmful effects of 0.175 M salinity stress on the mitotic activity, chromosomal aberrations, seedling growth (fresh weight, radicle length and radicle number), micronucleus frequency which is the simplest indicator, the most effective of cytological damage and bulb germination of A. cepa L. In only green tea leaf extract medium, the radicle length and radicle number of bulbs were partially reduced compared to the control bulbs germinated in the distilled water medium. While their germination percentage and fresh weight statistically indicated the same values. Besides, the mitotic index and chromosomal abnormalities in the root tip meristematic cells of Allium cepa bulbs germinated in alone green tea leaf extract medium increased compared to germinated control bulbs in the distilled water medium, whereas the micronucleus frequency showed statistically the same value compared to the control. In other words, it can be said that salt stress significantly inhibited the seedling growth and bulb germination of Allium cepa. What's more, it significantly reduced the mitotic index in the root tip meristems of the bulbs and increased the number of chromosomal abnormalities and micronuclues frequency. On the other hand, inhibitory effects of salt on the mitotic activity, seedling growth, bulb germination, chromosomal abnormalities and micronuclues frequency significantly decreased with the application of green tea leaf extract. The germination percentage, radicle lenght, radicle number, fresh weight, mitotic index, micronuclues frequency and chromosomal aberrations of the seedlings grown in 0

show abstract

Role of Potassium Nitrate (KNO<sub>3</sub>) in Alleviation of Detrimental Effects of Salt Stress on Some Physiological and Cytogenetical Parameters in <i>Allium cepa</i> L.

Cited by 16 publications

References 36 publications

Functions of Exogenously Proline against Negative Effects of Salt Stress in Onion (Allium cepa L.)

Functions of Exogenously Proline against Negative Effects of Salt Stress in Onion (Allium cepa L.)

Environmental Risk Characterization of an Antiretroviral (ARV) Lamivudine in Ecosystems

The Effects of Green Tea Leaf Extract on Cytogenetical and Physiological Parameters of Allium cepa L. exposed to Salinity

Contact Info

Product

Resources

About