Skip to Main Content
Inhibition of fungal colonization on the rhizoplane of the CS2 - producing plant, Mimosa pudica L.Author(s): Z. Feng; P.G. Hartel; R.W. Roncadori; Shi-Jean S. Sung
Source: In: Box, J.E., ed. Root demographics and their efficiencies in sustainable agriculture, grasslands and forest ecosystems. Dordrecht, Netherlands:Kluwer Academic Publishers: 115-126.
Publication Series: Miscellaneous Publication
PDF: View PDF (360 KB)
DescriptionCarbon disulfide (CS2) is a colorless, volatile, foul-smelling, fungicidal liquid that is produced by some plants. The authors determined the ability of a model CS2-producing plant, Mimosa pudica, to affect the rhizoplane colonization of six species of soil fungi. Tomato (Lycopersicon esculentum), a plant which does not produce CS2, was the control. In plate assays, the mycelia of Fusarium moniliforme, Pythium aphanidermatum, Phytophthora sp., Rhizoctonia solani, Sclerotium rolfsii, and Trichoderma viride showed variable responses to CS2, but all mycelia were inhibited by 4 mg CS2 ml-1. Inhibition of spore germination of F. moniliforme, P. aphanidermatum, and T. viride was similar to mycelial inhibition. When gnotobiotic tomato or M. pudica plants were inoculated with F. moniliforme or T. viride, spore counts were similar in the nonrhizosphere, but 10- to 100-fold lower on the rhizoplane of M. pudica than those of tomato. When the roots of 11-d-old gnotobiotic tomato or M. pudica plants were each inoculated separately with one of the six fungal species, abundant hyphae of all six fungal species were observed on the roots of tomato after 7 days. In contrast, roots of M. pudica showed many or abundant hyphae of R. solani and S. rolfsii but no or few hyphae of the remaining species. These observations were confirmed by ergosterol analysis. Plant-generated CS2 may account for this decreased fungal colonization, although other compounds may also be responsible.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationFeng, Z.; Hartel, P.G.; Roncadori, R.W.; Sung, Shi-Jean S. 1998. Inhibition of fungal colonization on the rhizoplane of the CS2 - producing plant, Mimosa pudica L. In: Box, J.E., ed. Root demographics and their efficiencies in sustainable agriculture, grasslands and forest ecosystems. Dordrecht, Netherlands:Kluwer Academic Publishers: 115-126.
- Volatile chemical cues guide host location and host selection by parasitic plants
- Parasitism by Cuscuta pentagona attenuates host plant defenses against insect herbivores
- Aluminum toxicity in tomato. Part 2.Leaf gas exchange, chlorophyll content, and invertase activity
XML: View XML