ムギ類の渦性および穂発芽性に関する分子生物学的研究(奨励賞,受賞業績)

DOI Web Site 参考文献47件
  • 蝶野 真喜子
    独立行政法人農業・食品産業技術総合研究機構作物研究所

書誌事項

タイトル別名
  • Molecular analysis of genes involved in the agronomic characteristics of "uzu" and "pre-harvest sprouting" in barley and wheat(The JSCRP Award for the Encouragement of Young Scientists, The Society Awards Lectures)
  • [植物化学調節学会]奨励賞 ムギ類の渦性および穂発芽性に関する分子生物学的研究
  • ショクブツ カガク チョウセツ ガッカイ ショウレイショウ ムギルイ ノ ウズセイ オヨビ ホ ハツガセイ ニ カンスル ブンシ セイブツガクテキ ケンキュウ

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説明

To investigate the important agricultural characters of barley "uzu" and "sprouting", the molecular analysis was performed. The semi-dwarf characteristic leading to lodging resistance is very important for high yields. Semi-dwarf barley accessions carrying the "uzu" gene, called "uzu" barley in Japan, are non-responding to brassinolide and accumulate brassinosteroids (BRs). We cloned the barley homolog of the BR-receptor gene, HvBRI1, a candidate for the uzu gene suggested by the marker synteny of rice and barley chromosomes. The comparison of HvBRI1 sequences in uzu and normal lines demonstrated that the uzu phenotype is correlated with a missense mutation in the HvBRI1 gene. Pre-harvest sprouting of cereal grain damages the quality of the end product. To investigate whether the regulation of abscisic acid (ABA) content is related to germinability during grain development under field conditions, cDNAs for key ABA biosynthetic and catabolic enzymes (9-cis-epoxycarotenoid dioxygenase and ABA 8'-hydroxylase) were cloned from barley. Expression and ABA-quantification analysis demonstrated that the change in the ABA content of imbibing grains following dormancy release is likely to reflect changes in the expression patterns of these genes. The varied expression levels of these genes, which would have effects on the activity of ABA biosynthesis and catabolism, might be reflected in the germinability of field-grown barley.

収録刊行物

  • 植物の生長調節

    植物の生長調節 42 (1), 1-9, 2007

    一般社団法人 植物化学調節学会

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