title: Effects of root exudates of bivalent transgenic cotton (Bt+CpTI) plants on antioxidant proteins and growth of conventional cotton (Xinluhan 33).
abstract: A greenhouse experiment was conducted to assess the adverse impact of transgenic cotton on ecosystem and environment via effect of transgenic Bt+CpTI cotton root exudates on growth and antioxidant activity of conventional parental cotton. Results showed elevated reductive and oxidative species activities in the leaves of conventional parental cotton seedlings treated with varying concentrations of transgenic cotton root exudates. Compared to control, 14.9% to 39.9% increase in catalase, 8.8% to 114% increase in for peroxidase, 21.3% to 59.7% increase in phenylalanine ammonia-lyase and 5.8 to 19.5 fold in ascorbate specific peroxidase was observed. However, biomass and height of conventional cotton seedlings were not affected by any concentration of transgenic cotton root exudates. These results suggested that cultivation of transgenic Bt+CpTI cotton plants poses little risk to conventional parental cotton based on their root interactions.
authors.forename: Hong-Sheng
authors.initials: HS
authors.lastname: Wu
authors.forename: Xue
authors.initials: X
authors.lastname: Shi
authors.forename: Ji
authors.initials: J
authors.lastname: Li
authors.forename: Tian-Yu
authors.initials: TY
authors.lastname: Wu
authors.forename: Qian-Qi
authors.initials: QQ
authors.lastname: Ren
authors.forename: Zhen-Hua
authors.initials: ZH
authors.lastname: Zhang
authors.forename: Ming-Yan
authors.initials: MY
authors.lastname: Wang
authors.forename: Xiao-Xia
authors.initials: XX
authors.lastname: Shang
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Song-Hua
authors.initials: SH
authors.lastname: Xiao
mesh_terms: D000975:Antioxidants / Q000378:metabolism*; D018533:Biomass; D017753:Ecosystem; D015971:Gene Expression Regulation, Enzymologic / Q000187:drug effects; D018506:Gene Expression Regulation, Plant; D003368:Gossypium / Q000235:genetics* / Q000254:growth & development / Q000378:metabolism*; D053147:Plant Exudates / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D018517:Plant Roots / Q000378:metabolism*; D030821:Plants, Genetically Modified; D036226:Seedlings / Q000187:drug effects / Q000254:growth & development
chemical_list: D000975:Antioxidants; D053147:Plant Exudates; D010940:Plant Proteins