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Details van artikel 6 van 15 gevonden artikelen
| Titel: |
Effect of lithium and lanthanum on herbicide induced hormesis in hydroponically-grown cotton and corn |
| Auteur: |
Allender, William J. Cresswell, Geoff C. Kaldor, Jill Kennedy, Ivan R. |
| Verschenen in: |
Journal of plant nutrition |
| Paginering: | Jaargang 20 (1997) nr. 1 pagina's 81-95 |
| Jaar: |
1997-01 |
| Inhoud: |
Pretreatment of hydroponically-grown cotton and corn with lithium (Li+) and lanthanum (La3+) chlorides, respectively, inhibited 2,4-dichlorophenoxyacetic acid (2,4-D) and metribuzin [4-amino-6-tert-butyl-3-methylthio-1,2,4-triazin-5(4H)-one (MTZ)]-induced hormetic growth in both plant species. Lithium chloride proved to be a more effective inhibitor of hormetic growth. This may be due to the fact that the Li+ ion readily crosses cell membranes and interferes with calcium (Ca2+) metabolism. Lanthanum, on the other hand, has a relatively high affinity for specific sites in various types of Ca2+ channels and can displace Ca2+ from the cell wall, but cannot penetrate the cell membrane via the channel pore. Thus it acts as an inhibitor of Ca2+ channel activity and regulation. This work provides indirect evidence that a Ca2+ influx is involved in a hormetic (growth stimulation) response by cotton and corn plants when exposed to sublethal dosages of herbicide. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 15 gevonden artikelen
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