Biological Activities of an Abscisic Acid Analog in Barley, Cress, and Rice

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概要

• 論文の詳細を見る

• Biological activities of an abscisic acid (ABA) analog, RCA-7a [1-(3-carboxyl-5-methylphenyl)-1-hydroxy-2, 6, 6-trimethyl-4-oxo-2-cyclohexene], carrying a phenyl group in the side chain are reported. (+)-RCA-7a was approximately 3-fold less active than (+)-ABA in the inhibition of α-amylase induction by gibberellic acid (GA_3) in embryo-less barley grains. In aleurone layers, RCA-7a inhibited GA_3-induced α-amylase mRNA accumulation and induced the accumulation of dehydrin mRNA, but less effectively than ABA. It also activated a dehydrin gene promoter in barley aleurone protoplast transient assays. A higher concentration of RCA-7a than ABA was required for similar levels of inhibition of the growth of cress plants at 1 week after sowing; however, RCA-7a remained effective for at least 3 weeks. In contrast, ABA rapidly lost its effectiveness and became less effective than RCA-7a by 3 weeks. RCA-7a also significantly retarded the growth of rice plants. These greenhouse pot experiments showed that RCA-7a had more useful characteristics than ABA for practical applications. These and our previous results indicate that RCA-7a has an ABA-like activity in various biological processes in plants and has potential as a novel plant growth regulator.

• 日本植物生理学会の論文

著者

• Yoshida Shigeo

  Plant Science Center, RIKEN

• 吉田 静夫

  北大低温研

• 吉田 静夫

  北海道大学低温科学研究所

• ASAMI Tadao

  Riken

• Asami T

  Dep. Of Applied Biological Chemistry Univ. Of Tokyo

• Asami Tadao

  Plant Function Laboratory The Institute Of Physical And Chemical Research (riken)

• YONEYAMA Koichi

  Weed Sci. Center, Utsunomiya Univ

• TAKEUCHI Yasutomo

  Weed Sci. Center, Utsunomiya Univ

• Robertson Masumi

  CSIRO, Plant Industry

• Yamamoto Shin

  Plant Functions Laboratory, The Institute of Physical and Chemical Research (RIKEN)

• Robertson Masumi

  Csiro Plant Industry

• Asami Tadao

  Plant Funct. Lab.

• Sugimoto Yukihiro

  Arid Land Research Center, Tottori Univ.

• Yoneyama Koichi

  Weed Sci. Center Utsunomiya Univ.

• Yoneyama Kouichi

  Department Of Obstetrics And Gynecology Nippon Medical School

• Sugimoto Yukihiro

  Arid Land Research Center Tottori Univ.

• Yamamoto S

  Department Of Biotechnology Graduate School Of Engineering Nagoya University

• Asami Tadao

  Riken Saitama Jpn

• Yoneyama K

  Weed Science Center Utsunomiya University

• Sugimoto Y

  Tottori Univ. Tottori Jpn

• Yamamoto S

  Department Of Bioengineering Tokyo Institute Of Technology

• Takeuchi Yasutomo

  Center For Research On Wild Plants Utsunomiya Univ.

• Takeuchi Yasutomo

  Department Of Applied Biological Chemistry Faculty Of Agriculture Shizuoka University

• Takeuchi Yasutomo

  Weed Control Res. Inst. Utsunomiya Univ.

• Robertson Masumi

  Csiro Division Of Plant Industry

• Yoshida Shigeo

  Plant Function Laboratory The Institute Of Physical And Chemical Research (riken)

• Yoshida Shigeo

  Plant Funct. Lab.

• TAKEUCHI Yasutomo

  Weed Control Res. Inst. , Utsunomiya Univ.

• YONEYAMA Koichi

  Weed Control Research Institute, Faculty of Agriculture, Utsunomiya University

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