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Recent Advances in Wheat Allelopathy

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Allelopathy in Sustainable Agriculture and Forestry

Abstract

Wheat (Triticum aestivum), as one of the world’s important crops, has been studied in depth for its allelopathic potential in weed management. Research on wheat allelopathy has progressed rapidly from the initial evaluation of allelopathic potential to the identification of allelochemicals and genetic markers associated with wheat allelopathy. Allelopathic activity varied among wheat accessions. Significant varietal differences in the production of allelochemicals were also found. In comparison with weakly allelopathic accessions, strongly allelopathic accessions produced significantly higher amounts of allelochemicals in the shoots or roots of young seedlings, and also exuded larger amounts of allelochemicals into the growth medium. Genetic markers associated with wheat allelopathy and plant cytochrome P450s encoding the biosynthesis of wheat allelochemicals have been identified. Recent advances in metabolomics, transcriptomics and proteomics will greatly assist in the identification of novel allelopathy genes. Ultimately, the allelopathy genes could be manipulated to regulate the biosynthesis of allelochemicals, thereby resulting in better weed suppression via elevated levels of allelopathic potential in commercial wheat cultivars.

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Authors and Affiliations

  1. E.H. Graham Center for Agricultural Innovation, Wagga Wagga Agricultural Institute, Wagga Wagga, NSW 2650, Australia

    Hanwen Wu, De Li Liu & Deirdre Lemerle

  2. E.H. Graham Center for Agricultural Innovation (a collaborative alliance between Charles Sturt University and NSW Department of Primary Industries), Wagga Wagga, NSW 2650, Australia

    Min An & Jim Pratley

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Editors and Affiliations

  1. South China Agricultural University, Guangzhou, Guangdong, China

    Ren Sen Zeng

  2. Lakehead University, Thunder Bay, Ontario, Canada

    Azim U. Mallik

  3. Institute of Tropical & Sub-tropical Ecology, South China Agricultural University, Guangzhou, Guangdong, China

    Shi Ming Luo

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Wu, H., An, M., Liu, D.L., Pratley, J., Lemerle, D. (2008). Recent Advances in Wheat Allelopathy. In: Zeng, R.S., Mallik, A.U., Luo, S.M. (eds) Allelopathy in Sustainable Agriculture and Forestry. Springer, New York, NY. https://doi.org/10.1007/978-0-387-77337-7_12

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