A comparative study of the effect of RNA and DNA treatment on somatic nuclei in plant cells

1961 ◽  
Vol 2 (4) ◽  
pp. 260-265 ◽  
Author(s):  
Arun Kumar Sharma ◽  
Archana Sharma
Keyword(s):  
Comparative Study ◽  
Plant Cells ◽  
Rna And Dna

A COMPARATIVE STUDY OF FUNGITOXICITY AND PHYTOTOXICITY IN AN HOMOLOGOUS SERIES OF N-n-ALKYLETHYLENETHIOUREAS

1957 ◽  
Vol 35 (1) ◽  
pp. 65-95 ◽  
Author(s):  
R. G. Ross ◽  
R. A. Ludwig
Keyword(s):  
Comparative Study ◽  
Homologous Series ◽  
Water Solubility ◽  
Plant Cells ◽  
External Solution ◽  
Side Chain ◽  
Differential Toxicity ◽  
Water Partition Coefficient ◽  
Oil Water ◽  
Two Phases

A comparative study of fungitoxicity and phytotoxicity was made with an homologous series of N-n-alkylethylenethioureas ranging from ethyl to dodecyl. Water solubility decreased and the oil/water partition coefficient increased with increasing length of alkyl side chain. Fungitoxicity increased with increasing chain length up to and including the octyl homologue followed by a sharp decline in the higher members of the series. The more fungitoxic homologues had the same mode of action and the cutoff in toxicity was due to limiting water solubility.The peak of maximum phytotoxicity depended on the availability of the compounds to the plant cells. As the series was ascended the mobility of the homologues in the plant was found to decrease. When the compounds were readily available to plant cells phytotoxicity increased as the series was ascended up to at least the octyl homologue, but when barriers were present, a peak for phytotoxicity was exhibited near the amyl homologue.Studies on the uptake of the compounds from aqueous solutions by potato tissue and Monilinia fructicola spores showed that a distribution equilibrium existed between the tissue or spores and the external solution. With increasing length of side chain the affinity for the biophase increased and hence the differential toxicity could be attributed to the partitioning of the chemical between the two phases.

scholarly journals A comparative study of RNA and DNA as internal gene expression controls early in the developmental cycle ofChlamydia pneumoniae

2010 ◽  
Vol 58 (2) ◽  
pp. 244-253 ◽  
Author(s):  
Patrik Engström ◽  
Leslie Bailey ◽  
Thomas Önskog ◽  
Sven Bergström ◽  
Jörgen Johansson
Keyword(s):  
Gene Expression ◽  
Comparative Study ◽  
Developmental Cycle ◽  
Internal Gene ◽  
Rna And Dna

Author response for "Laminar distribution of cortical projection neurons to the pulvinar: A comparative study in cats and mice"

2020 ◽  
Author(s):  
Bruno Oliveira Ferreira de Souza ◽  
Éve‐Marie Frigon ◽  
Robert Tremblay‐Laliberté ◽  
Christian Casanova ◽  
Denis Boire
Keyword(s):  
Comparative Study ◽  
Author Response ◽  
Projection Neurons ◽  
Cortical Projection ◽  
Laminar Distribution
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