59. Glyphosate 処理が花の形態と色素形成に与える影響

• 島田 淳巳

  九州共立大学工学部

• 竹内 澄代

  九州共立大学工学部

• 木村 靖夫

  鳥取大学農学部

書誌事項

タイトル別名

• Influence of glyphosate on flower morphogenesis and pigmentation in Petunia hybrida

抄録

Glyphosate, a nonselective herbicide, is known to inhibit biosynthesis of aromatic amino acids by inhibition of the shikimate pathway enzyme 5-enolpyruvylshikimate-3-phosphate synthase that catalyzes the production of phenylalanine, tyrosine and tryptophan. Glyphosate affects flower symmetry and pigmentation of petunia corolla. The shape of the corolla treated with 30mg/L glyphosate was changed from radially symmetrical type (normal wild type) to bilaterally symmetrical type. Glyphosate reduced anthocyanin content of petunia corollas to 21% of control at a concentration of 30mg/L. Since phenylalanine ammonia-lyase (PAL) was related to anthocyanin synthesis, PAL activity was measured in corolla tissue. Glyphosate decreased PAL activity to 65% of control. PAL activity was not closely related to anthocyanin production, since trans-cinnamate, PAL product, may also serve as a precursor for other metabolites such as phenolic compounds and lignin biosynthesis. Glyphosate increased free amino acid concentration to 136% of control, but did not affect soluble protein concentration and composition. Glyphosate altered amino acid profiles in the corollas. Proline and cysteine levels significantly increased by glyphosate application, but methionine level was reduced in the corollas. For the investigation of the relationship between floral shape and metabolism, the roles of phenolic compounds and lignin in glyphosate-treated petunia corollas will be reported in the near future.

収録刊行物

• 植物化学調節学会 研究発表記録集

  植物化学調節学会 研究発表記録集 38 (0), 76-, 2003

  一般社団法人 植物化学調節学会

詳細情報

• CRID: 1390282679401616128
• NII論文ID: 110001899861
• DOI: 10.18978/jscrpanb.38.0_76
• ISSN: 21896313
• ISSN: 09191887
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可