Status of DIMBOA and phenolic acids in transgenic Bt corn

Nie, C. R. and Luo, S. M. and Lin, C. X. and Zeng, R. S. and Huang, J. H. and Wang, J. W. (2005) Status of DIMBOA and phenolic acids in transgenic Bt corn. Australian Journal of Agricultural Research, 56 (8). pp. 833-837. ISSN 0004-9409


Experiments were conducted to investigate the status of DIMBOA (2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one) and phenolic acids in leaves of some transgenic Bt corn hybrids. Comparison between Bt corn hybrids and their corresponding non-transgenic near-isogenic lines suggested that the introduction of the Bt gene has adverse effects on the biosynthesis and accumulation of DIMBOA and some phenolic acids, such as ferulic acid, in the corn plants. Under conditions of either water or nitrogen stress, the accumulation of DIMBOA in the leaves of the Bt corns could be enhanced. The results of this study suggest that caution must be taken when considering the introduction of Bt corns into China because Bt corns may have a weaker capacity, relative to traditional Chinese corn hybrids, to synthesise DIMBOA and some forms of phenolic acids in the leaves and, therefore, reduce the plant's resistance to pathogens, diseases, and pests other than the targetted corn borer.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Faculty/School / Institute/Centre: Current - USQ Other
Date Deposited: 09 Nov 2012 02:06
Last Modified: 03 Jul 2013 01:31
Uncontrolled Keywords: Bt protein; nitrogen stress; water stress
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070303 Crop and Pasture Biochemistry and Physiology
Socio-Economic Objective: B Economic Development > 82 Plant Production and Plant Primary Products > 8299 Other Plant Production and Plant Primary Products > 829999 Plant Production and Plant Primary Products not elsewhere classified
Identification Number or DOI: 10.1071/AR04321

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