Autotoxicity: concept, organisms, and ecological significance

Singh, H. P. ; Batish, R. Daizy ; Kohli, R. K. (1999) Autotoxicity: concept, organisms, and ecological significance Critical Reviews in Plant Sciences, 18 (6). pp. 757-772. ISSN 0735-2689

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Official URL: http://www.tandfonline.com/doi/abs/10.1080/0735268...

Related URL: http://dx.doi.org/10.1080/07352689991309478

Abstract

The present review deals with the phenomenon of autotoxicity - a type of intraspecific allelopathy, where a plant species inhibits the growth of its own kind through the release of toxic chemicals into the environment. This phenomenon has been reported to occur in a number of weeds and crop plants in agroecosystem and wastelands causing the soil sickness. Besides, it plays a significant role in the orchards (of apple, pear, grapes, etc.) where it is the major reason of the replant problem, natural forests and coffee and tea plantations causing the regeneration problems. Not only the higher plants, but even some ferns and algae are also reported to show this phenomenon. Some plants have even developed extensive mechanisms to overcome this phenomenon, whereas the others have adapted to it by making structural and ecological changes providing to them a competitive ecological advantage over the others. Although autotoxicity is a natural phenomena providing selective benefit to the plant, yet the chemicals responsible for this have good potential for weed and pest management.

Item Type:Article
Source:Copyright of this article belongs to Taylor and Francis Group.
Keywords:Intraspecific Allelopathy; Soil Sickness; Replant Problem; Regeneration Failure; Plantations; Ecological Significance
ID Code:70018
Deposited On:16 Nov 2011 13:00
Last Modified:16 Nov 2011 13:00

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