Influence of 1,10-phenanthroline, a photodynamic herbicide, on the ultrastructure of mesophyll cells and photosynthetic activity in greening pea seedlings

Mostowska, Agnieszka; Fietta, Dorota; Parys, Eugeniusz

doi:10.1016/0098-8472(91)90036-n

Cited by 5 publications

(3 citation statements)

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“…When pea plants were treated with o-P for 14 h in darkness and then exposed to the light, net photosynthesis was reduced by 92% (22,23). o-P can also bind to Mg 4 "*", and immediately after exposure to the light there may be an insufficient amount of Mg" 1-1 " for carboxylase activation and, thus, photosynthesis is inhibited.…”

Section: -Phmentioning

confidence: 99%

The Porphyrin Pathway as a Herbicide Target Site

Nandihalli

Duke

1993

ACS Symposium Series

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Section: -Phmentioning

confidence: 99%

The Porphyrin Pathway as a Herbicide Target Site

Nandihalli

Duke

1993

ACS Symposium Series

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“…1990, Mostowska et al 1991a, Mostowska and Siedlecka 1995 that the disturbed greening process was related to an accumulation of light-harvesting Chl a/b-binding proteins (LHCP) in endoplasmic reticulum (ER) cisternae inhibited in their transport to plastids and/or a decrease in the activity of chlorophyll synthetase. Our previous results showed also that in green plants high doses of 2.2'-B caused loss of turgor and photooxidative perturbations at structural and functional level in chloroplasts (Mostowska et al 1991b, Mostowska et al 1996.…”

Section: Introductionmentioning

confidence: 78%

“…1990. In our previous papers (Mostowska et al 1991a(Mostowska et al , 1991b, M o s t o w s k a and Siedlecka 1995, M o s t o w s k a et al. 1996) we used the name "photodynamic herbicides" for such compounds, after Rebeiz and co-workers (Rebeiz et at.…”

Section: Introductionmentioning

confidence: 99%

Effect of 1.10-phenanthroline, a photodynamic herbicide on the development and structure of maize chloroplasts

Mostowska

1998

Acta Physiol Plant

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Effect of low (5 mmol-dm -3) and high (10 or 20 mmol " dm -3) doses of 1.10-phenanthroline (Phe), a photodynamic herbicide, on the development of chloroplasts in etiolated and subsequently illuminated maize seedlings and on the structure of already developed chloroplasts of green maize seedlings was examined. Etiolated and then irradiated plants were resistant to 5 mmol.dm 3 of Phe with respect to morphology, however Phe caused inhibition of greening and of grana formation. Higher Phe concentrations followed by exposure to light caused not only total inhibition of greening but also dilation of thylakoids, swelling of chloroplasts, and finally total destruction of chloroplast structure. Application of Phe in the same concentrations to green plants revealed that they were resistant to low dose of Phe with respect to morphology3 and structure of chloroplasts, however 10 and 20 mmol.dm-Phe and illumination caused the loss of turgor of treated plants and other photooxidafive damages seen at the ultrastructural level. We concluded that maize, as representant of monocotyledonous plants, is re-.-3 , , s~stant to low ~5 mmol.dm ~ ) Phe concentration. Higher (10 or 20 mmol.dm-) concentrations, used to determine the site of damage and mode of action of Phe on the level of cell revealed that action of photodynamic herbicides is based on standard photoinhibition mechanism and also probably on their chelating properties.List of abbreviations: A L A -6 -aminolevulinic acid; 2,2'-B -2,2'-bipyridyl; Car -carotenoid; Chl -chlorophyll; ER -endoplasmic reticulum; 8H -8-hydroxyquinoline; L H C P -light-harvesting Chl a/b-binding proteins; Phe -1,10-phenanthroline; PS II -photosystem II; PBs -prolamellax bodies.

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