Aluminum-Dependent Root Growth Inhibition as Mediated by DNA-Damage Responses

2015 ◽  
pp. 47-62 ◽  
Author(s):  
Caroline A. Sjogren ◽  
Paul B. Larsen
Keyword(s):  
Dna Damage ◽  
Root Growth ◽  
Growth Inhibition ◽  
Root Growth Inhibition ◽  
Dna Damage Responses

scholarly journals Cytotoxic and Genotoxic Effects of Clopyralid Herbicide on Allium Cepa Roots

2021 ◽  
Author(s):  
Eslem Amaç ◽  
Recep Liman
Keyword(s):  
Dna Damage ◽  
Root Growth ◽  
Growth Inhibition ◽  
Allium Cepa ◽  
Negative Control ◽  
Root Growth Inhibition ◽  
Genotoxic Effects ◽  
Anaphase Bridges ◽  
Auxin Herbicides ◽  
Dose Dependent

Abstract Clopyralid is a one of the synthetic pyridine-carboxylate auxin herbicides and used to control perennial and annual broadleaf weeds in wheat, sugar beets and canola etc. In this study, dose dependent cytotoxicity and genotoxicity of clopyralid at different concentrations (25, 50, and 100 µg/mL) on the Allium cepa roots were evaluated at macroscopic (root growth) and microscopic levels (Mitotic index (MI), chromosome aberrations (CAs) in ana-telophase cells and DNA damage) using root growth inhibition, Allium ana-telophase and comet tests. The percentage root growth inhibition and concentration reducing root growth by 50% (EC50) of clopyralid in relation to the negative control were determined by using various concentrations of clopyralid (6.25–1000 µg/L). The 96 h EC50 of clopyralid was recorded as 50 µg/L. The gradual decrease in root growth and the MI reveals the cytotoxic effects of clopyralid. All the tested concentrations of clopyralid induced total CAs (polyploidy, stickiness, anaphase bridges, chromosome laggards, and disturbed ana-telophase) and DNA damage dose and time dependently. This study confirmed cytotoxic and genotoxic effects of clopyralid on non-target organism.

Copper-induced root growth inhibition ofAllium cepavar.agrogarumL. involves disturbances in cell division and DNA damage

2015 ◽  
Vol 34 (5) ◽  
pp. 1045-1055 ◽  
Author(s):  
Rong Qin ◽  
Congyue Wang ◽  
Da Chen ◽  
Lars O. Björn ◽  
Shaoshan Li
Keyword(s):  
Dna Damage ◽  
Cell Division ◽  
Root Growth ◽  
Growth Inhibition ◽  
Root Growth Inhibition

Root growth inhibition and induction of DNA damage in soybean (Glycine max) by chlorobenzenes in contaminated soil

Chemosphere ◽  
2004 ◽  
Vol 57 (2) ◽  
pp. 101-106 ◽  
Author(s):  
W. Liu ◽  
Y.S. Yang ◽  
P Li ◽  
Q Zhou ◽  
T Sun
Keyword(s):  
Dna Damage ◽  
Glycine Max ◽  
Root Growth ◽  
Growth Inhibition ◽  
Contaminated Soil ◽  
Root Growth Inhibition

scholarly journals Phyto-toxic Influence of an Atrazine-based Selective Herbicide – Arda-force® on Onions (Allium cepa L)

2020 ◽  
pp. 40-46
Author(s):  
Doris Fovwe Ogeleka ◽  
Esther Obasi
Keyword(s):  
Root Growth ◽  
Growth Inhibition ◽  
Allium Cepa ◽  
Environmental Protection Agency ◽  
Toxic Effects ◽  
Root Growth Inhibition ◽  
Allium Cepa L ◽  
Test Concentration ◽  
Maximum Root ◽  
Selective Herbicide

Introduction: The constant impact on the environment occasioned by pollution, indiscriminate application of agricultural chemicals, security challenges and crisis in the Niger Delta ecological area of Nigeria has caused severe damage to plants, soil organisms and humans. Aim and Methodology: In this research, onions (Allium cepa L) was exposed to varying concentrations of an atrazine-based selective herbicide Arda-force® to estimate the phyto-toxic effects on the plant species using the Organization for Economic Co-operation and Development, (OECD) protocol #208. Results: The mean effective concentration (EC50) using root growth inhibition produced indications of phyto-toxicity to the exposed species at a concentration of 0.55 ± 0.06 mg/L. Similarly, the maximum root growth inhibition efficiency relative to the control was 65% as recorded in the highest test concentration of 1.25 mg/L. Discussion: The study indicated that constant application / indiscriminate use of the herbicide Arda-force® could cause deleterious influence on these plant and vegetable species, daily consumed by humans as a rich source of anti-oxidants. Conclusion: This study concluded that atrazine-based herbicide Arda-force® used in this assessment resulted in phyto-toxic effects to Allium cepa L. At the exposed concentrations of the herbicide to non-target specie – Allium cepa L. that are integral parts of the ecosystems, the ‘‘harmless’’ status of atrazine acclaimed by the United State Environmental Protection Agency (USEPA) is still very much in doubt.

Interplay between 1-aminocyclopropane-1-carboxylic acid, γ-aminobutyrate and D-glucose in the regulation of high nitrate-induced root growth inhibition in maize

Plant Science ◽  
2020 ◽  
Vol 293 ◽  
pp. 110418
Author(s):  
Iñigo Saiz-Fernández ◽  
Maite Lacuesta ◽  
Usue Pérez-López ◽  
M. Carmen Sampedro ◽  
Ramon J. Barrio ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Root Growth ◽  
Growth Inhibition ◽  
Root Growth Inhibition

scholarly journals The mechanism of root growth inhibition by the endocrine disruptor bisphenol A (BPA)

2020 ◽  
Vol 257 ◽  
pp. 113516 ◽  
Author(s):  
Ramin Bahmani ◽  
DongGwan Kim ◽  
Mahsa Modareszadeh ◽  
Andrew J. Thompson ◽  
Jeong Hoon Park ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Root Growth ◽  
Growth Inhibition ◽  
Endocrine Disruptor ◽  
Root Growth Inhibition
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