Bioactive Root Exudates: A Novel Source of Allelochemicals and Bioherbicides

Research output: Book chapter/Published conference paperConference paper

Abstract

Plant root exudates are known to play an important role in community structure and are involved in complex rhizospheric interactions. Our past work with Sorghum spp. has elucidated the role of the allelochemical sorgoleone, a potent inhibitor of plant growth that is released in sorghum root exudates. Graminaecous species including fine fescue (Festuca rubra) also produce large amounts of novel secondary products and can selectively inhibit weeds in both field and laboratory conditions. These constituents are known to play important roles in plant defense against herbivores, insects, pathogens and microbes as well as competing plants. In Australia, Paterson's curse (Echium plantagineum) also produces unique root exudates from two types of root hairs, which are involved in active exudation processes in the plant. We have discovered that the epidermis of both its younger lateral roots and older taproots produce unusual, red- colored chemical constituents which are localized in the outer peridermal layers of its roots. Their identification and mode of action is currently under evaluation, as is their role in plant defense and invasion success.
Original languageEnglish
Title of host publication2010 Joint RACI and IUPAC, Chemistry for a Sustainable World
EditorsGreg Simpson
Place of PublicationMelbourne
PublisherIUPAC/Royal Australian Chemical Institute
Pages1
Number of pages1
Publication statusPublished - 2010
EventIUPAC International Conference of Pesticide Chemistry - Melbourne, VIC, Australia
Duration: 04 Jul 201008 Jul 2010

Conference

ConferenceIUPAC International Conference of Pesticide Chemistry
CountryAustralia
Period04/07/1008/07/10

Fingerprint Dive into the research topics of 'Bioactive Root Exudates: A Novel Source of Allelochemicals and Bioherbicides'. Together they form a unique fingerprint.

  • Cite this

    Weston, L. (2010). Bioactive Root Exudates: A Novel Source of Allelochemicals and Bioherbicides. In G. Simpson (Ed.), 2010 Joint RACI and IUPAC, Chemistry for a Sustainable World (pp. 1). IUPAC/Royal Australian Chemical Institute.