Identification of Endogenous Gibberellins in Immature Seeds of Loquat (Eribotrya japonica Lindl.)(Biological Chemistry)

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概要

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• Gibberellins (GAs) A_9, A_<15>, A_<19>, A_<20>, A_<29>, A_<35>, A_<44>, A_<50> and A_<61> were identified by capillary gas chromatography/selected ion monitoring (GC/SIM) in immature seeds of loquat (Eriobotrya japonica Lindl.). Furthermore, five unknown GA-like compounds with apparent parent ions of m/z 418, 504 or 506 (as methyl ester trimethylsilyl ether derivatives) were found by GC/mass spectrometry (GC/MS) in the biologically active fractions. The m/z 418 and 504 compounds may have been C-11β hydroxylated GA_9 and dehydro-GA_<35>, respectively. The bioassay and GC/MS results suggest that the major GAs were GA_<50> and the five unknown GA-like compounds. In the immature seeds, at least two GA metabolic pathways may thus exist, one being the non-hydroxylation pathway of GA_<15>→GA_<24>→GA_9, and the other, the early C-13 hydroxylation pathway of GA_<44>→GA_<19>→GA_<20>→GA_<29>. A late C-11β hydroxylation pathway is also possible.

• 社団法人日本農芸化学会の論文
• 1988-06-23

著者

• Pearce David

  Plant Physiiology Research Group Department Of Biological Science The University Of Calgary

• Koshioka Masaji

  Department Of Applied Physiology National Research Institute Of Vegetables Ornamental Plants And Tea

• Pharis R

  Univ. Calgary Calgary Can

• Murakami Y

  Laboratory Of Nutrition Graduate School Of Agricultural Science

• Makino Yoshio

  Makino Dermatology Clinic

• Koshioka M

  Department Of Floriculture National Research Institute Of Vegetables Ornamental Plants And Tea (nivo

• MURAKAMI YUTAKA

  National Institute of Agricultural Sciences

• KOSHIOKA Masaji

  Plam Physiology Research Group, Department of Biological Sciences, The University of Calgary

• PEARCE David

  Plam Physiology Research Group, Department of Biological Sciences, The University of Calgary

• PHARIS Richard

  Plam Physiology Research Group, Department of Biological Sciences, The University of Calgary

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