Root growth inhibition and ultrastructural changes in radish root tips after treatment with aqueous extracts of Fallopia japonica and F. ×bohemica rhizomes

PROTOPLASMA ◽  
2021 ◽  
Author(s):  
Katarina Šoln ◽  
Nada Žnidaršič ◽  
Jasna Dolenc Koce
Keyword(s):  
Root Growth ◽  
Growth Inhibition ◽  
Ultrastructural Changes ◽  
Root Growth Inhibition ◽  
Aqueous Extracts ◽  
Root Tips ◽  
Fallopia Japonica ◽  
Radish Root

How cobalt facilitates cadmium- and ethylene precursor-induced growth inhibition and radial cell expansion in barley root tips

2012 ◽  
Vol 7 (3) ◽  
pp. 551-558 ◽  
Author(s):  
Katarína Valentovičová ◽  
Igor Mistrík ◽  
Veronika Zelinová ◽  
Ladislav Tamás
Keyword(s):  
Root Growth ◽  
Growth Inhibition ◽  
Root Growth Inhibition ◽  
Radial Expansion ◽  
Root Tips ◽  
Short Term ◽  
Cortical Cells ◽  
Ethylene Precursor ◽  
Radial Cell ◽  
Radial Cell Expansion

AbstractSignificant root growth inhibition was observed during the very short 5 minute exposure time of barley roots to the low 10 μM concentration of cadmium. In addition to the cadmium-induced root growth inhibition, considerable radial expansion of roots was observed as a characteristic symptom of transient short-term exposure of roots to cadmium. The cadmium-induced radial expansion of roots was observed mainly the cortical cells of elongation zone that were twice as large as in control roots. Similarly as in cadmium-treated roots, short-term treatment with ACC significantly inhibited root growth and caused a marked radial expansion of cortical cells. The ethylene synthesis inhibitor cobalt significantly alleviated both the cadmium- and ethylene precursor-induced root growth inhibition and radial root expansion. The results indicate that ethylene probably plays a crucial role in the short-term cadmium-induced inhibition of root growth and radial cell expansion of barley root tips, which are the very early symptoms of cadmium toxicity.

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

Soybean root growth inhibition and lignification induced by p-coumaric acid

2009 ◽  
Vol 66 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Daniele Iara Lucca Zanardo ◽  
Rogério Barbosa Lima ◽  
Maria de Lourdes Lucio Ferrarese ◽  
Gisele Adriana Bubna ◽  
Osvaldo Ferrarese-Filho
Keyword(s):  
Root Growth ◽  
Growth Inhibition ◽  
Root Growth Inhibition ◽  
Coumaric Acid ◽  
Soybean Root
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