Effects of three AM fungi on growth, distribution of glandular hairs, and essential oil production in Ocimum basilicum L. var. Genovese
- 8 August 2006
- journal article
- Published by Springer Science and Business Media LLC in Mycorrhiza
- Vol. 16 (7), 485-494
- https://doi.org/10.1007/s00572-006-0065-6
Abstract
The essential oils of basil are widely used in the cosmetic, pharmaceutical, food, and flavoring industries. Little is known about the potential of arbuscular mycorrhizal (AM) fungi to affect their production in this aromatic plant. The effects of colonization by three AM fungi, Glomus mosseae BEG 12, Gigaspora margarita BEG 34, and Gigaspora rosea BEG 9 on shoot and root biomass, abundance of glandular hairs, and essential oil yield of Ocimum basilicum L. var. Genovese were studied. Plant P content was analyzed in the various treatments and no differences were observed. The AM fungi induced various modifications in the considered parameters, but only Gi. rosea significantly affected all of them in comparison to control plants or the other fungal treatments. It significantly increased biomass, root branching and length, and the total amount of essential oil (especially alpha-terpineol). Increased oil yield was associated to a significantly larger number of peltate glandular trichomes (main sites of essential oil synthesis) in the basal and central leaf zones. Furthermore, Gi. margarita and Gi. rosea increased the percentage of eugenol and reduced linalool yield. Results showed that different fungi can induce different effects in the same plant and that the essential oil yield can be modulated according to the colonizing AM fungus.Keywords
This publication has 45 references indexed in Scilit:
- Produção e qualidade de óleos essenciais de Mentha arvensis em resposta à inoculação de fungos micorrízicos arbuscularesPesquisa Agropecuária Brasileira, 2004
- The Arum–Paris continuum of mycorrhizal symbiosesNew Phytologist, 2004
- Impact of two fluorescent pseudomonads and an arbuscular mycorrhizal fungus on tomato plant growth, root architecture and P acquisitionMycorrhiza, 2003
- Stimulation of carotenoid metabolism in arbuscular mycorrhizal rootsPlanta, 2002
- Arbuscular Mycorrhizal Fungus-promoted Accumulation of Two New Triterpenoids in Cucumber RootsBioscience, Biotechnology, and Biochemistry, 2002
- Arbuscular mycorrhizal modifications to plant root systems: scale, mechanisms and consequencesPublished by Springer Science and Business Media LLC ,2002
- An Investigation of the Storage and Biosynthesis of Phenylpropenes in Sweet BasilPlant Physiology, 2001
- Infraspecific taxonomy and essential oil chemotypes in sweet basil, Ocimum basilicumPhytochemistry, 1996
- Cytokinins in the root pressure exudate of Citrus jambhiri Lush. colonized by vesicular-arbuscular mycorrhizaeTree Physiology, 1988
- Phytohormone changes in Bouteloua gracilis infected by vesicular–arbuscular mycorrhizae: I. Cytokinin increases in the host plantCanadian Journal of Botany, 1980