IDEALS Home University of Illinois at Urbana-Champaign logo The Alma Mater The Main Quad

Structure-function photodynamic herbicidal studies of phenanthroline, dipyridyl and pyridine analogs

Show full item record

Bookmark or cite this item: http://hdl.handle.net/2142/19598

Files in this item

File Description Format
PDF 9236388.pdf (16MB) Restricted to U of Illinois (no description provided) PDF
Title: Structure-function photodynamic herbicidal studies of phenanthroline, dipyridyl and pyridine analogs
Author(s): Amindari, Simin
Doctoral Committee Chair(s): Splittstoesser, Walter E.
Department / Program: Crop Sciences
Discipline: Crop Sciences
Degree Granting Institution: University of Illinois at Urbana-Champaign
Degree: Ph.D.
Genre: Dissertation
Subject(s): Biology, Plant Physiology
Abstract: Physical-chemical properties of photodynamic modulators were studied in johnsongrass seedlings and their structure-function relationships were analyzed. The results showed that all three groups of modulators induced DV-MPE formation. DV-Pchlide formation was induced by phenanthroline and dipyridyl analogs and was inhibited by pyridine analogs. The photodynamic damage of seedlings treated with phenanthroline analogs, both in the presence and absence of exogenous ALA, was correlated with positive charge repelling electrostatic volumes around the molecules. The photodynamic damage in seedlings, sprayed with dipyridyl analogs without exogenous ALA, was correlated with electron density over the lowest unoccupied molecular orbital and in seedlings sprayed with modulator + ALA was correlated with negative steric probe volumes of the molecules. In seedlings sprayed with pyridine analogs, both in the presence and absence of exogenous ALA, a correlation was found between photodynamic damage and positive charge repelling electrostatic volumes around the molecules.Incubation of isolated cucumber chloroplasts with different exogenous tetrapyrroles under light showed that DV-Mg-Proto does not trigger chloroplast destruction. DV-Proto affected the PS II antenna Chl pigment-protein complex and had no effect on PS I antenna complex. DV-MPE and MV-Pchlide destroyed the PS I antenna complex completely and disorganized the LHCP complex. DV-Pchlide disorganized the PS I and II antenna complexes.
Issue Date: 1992
Type: Text
Language: English
URI: http://hdl.handle.net/2142/19598
Rights Information: Copyright 1992 Amindari, Simin
Date Available in IDEALS: 2011-05-07
Identifier in Online Catalog: AAI9236388
OCLC Identifier: (UMI)AAI9236388
 

This item appears in the following Collection(s)

Show full item record

Item Statistics

  • Total Downloads: 0
  • Downloads this Month: 0
  • Downloads Today: 0

Browse

My Account

Information

Access Key