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- 宮崎 翔
- 慶應義塾大学理工学部
書誌事項
- タイトル別名
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- Biosynthetic studies on plant growth regulators in a moss <i>Physcomitrella patens</i>
- 奨励賞 ヒメツリガネゴケの成長制御物質に関する生合成研究
- ショウレイショウ ヒメツリガネゴケ ノ セイチョウ セイギョ ブッシツ ニ カンスル セイゴウセイ ケンキュウ
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説明
<p>The moss Physcomitrella patens does not respond to active gibberellins (GAs), and GAs have not been detected in the moss. However, P. patens has a partial GA biosynthetic pathway that mediates the biosynthesis of the GA intermediate ent-kaurenoic acid (KA). Previous work demonstrated that P. patens KA-deficient mutants have defects in protonemal cell differentiation, which are restored by the application of KA but not by GAs. Recently, I demonstrated that a KA-derived diterpenoid functions as a potent regulator of protonemal cell differentiation in the moss. Bioassay-guided exploration with a KA-deficient mutant led to the detection of a bioactive metabolite from KA, and its structure was elucidated as ent-3β-hydroxy-kaurenoic acid. Transcriptome analysis identified a gene encodes a putative 2-oxoglutarate-dependent dioxygenase involved in the oxidation of KA to ent-2α-hydroxy-kaurenoic acid, an inactive metabolite in protonemal cell differentiation. My study showed that P. patens converts KA to an active form by 3-oxidation and to an inactive form by 2-oxidation, identifying a potential activation/inactivation system for GA biosynthesis in flowering plants. Here I summarize the biosynthetic studies on GA-like plant growth regulators in a P. patens.</p>
収録刊行物
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- 植物の生長調節
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植物の生長調節 54 (1), 17-25, 2019
一般社団法人 植物化学調節学会
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詳細情報 詳細情報について
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- CRID
- 1390001288150142720
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- NII論文ID
- 130007668414
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- NII書誌ID
- AA11550064
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- ISSN
- 21896305
- 13465406
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- NDL書誌ID
- 029773299
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可