Hokkaido University · 생화학·유전·분자생물학
마수미 야마기시 교수의 연구실은 꽃의 색소 형성, 특히 안토시아이닌과 카로티노이드의 생합성 조절 메커니즘을 중심으로 연구를 진행하고 있습니다. 주로 리시추리아과 식물인 아시아티크 하이브리드 라넌큘러스를 모델로 하여, R2R3-MYB 전사인자와 미크로RNA가 색소 분포를 어떻게 조절하는지 규명하고 있으며, 이는 꽃의 색상 다형성과 발달 유전자의 기초 메커니즘을 밝히는 데 기여하고 있습니다. 또한 식물의 영양소 대사, 특히 붕소 결핍이 콩의 수분과 질소 고정에 미치는 영향에 대해서도 연구를 확장하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Anthocyanins are secondary metabolites that contribute to colors of flowers, fruits and leaves. Asiatic hybrid lily (Lilium spp.) accumulates cyanidin anthocyanins in flower tepals, tepal spots and leaves of juvenile shoots. To clarify their mechanisms of regulation of anthocyanin pigmentation, two full-length cDNAs of R2R3-MYB (LhMYB6 and LhMYB12) were isolated from the anthocyanin-accumulating tepals of cultivar 'Montreux'. Analysis of the deduced amino acid sequences indicated they have homol
With 6 figures and 2 tables To elucidate the regulatory mechanisms of carotenoid accumulation in tepals of Asiatic hybrid lily (Lilium spp.), the content and composition of carotenoids and transcriptional changes of carotenoid biosynthetic genes were compared between tepals of yellow, red, pink and white flowers. Yellow and red tepal cultivars accumulated high amounts of carotenoids, and cultivars with pink and white tepals accumulated small amounts of carotenoids. Most of the carotenoids in yel
Many angiosperm families develop spatially regulated anthocyanin spots on their flowers. The Asiatic hybrid lily (Lilium spp.) cv 'Latvia' develops splatter-type spots on its tepals. The splatters arise simply from the deposition of anthocyanin pigments in the tepal epidermis. To determine how splatter development was regulated, we analysed the transcription of anthocyanin biosynthesis genes, and isolated and characterized an R2R3-MYB gene specific to splatter pigmentation. All anthocyanin biosy
Abstract Effects of boron (B) on soybean growth, nodule development, and nitrogen fixation were studied. When soybean plants were grown in B-free medium for 35,40, or 72 d, B deficiency symptoms appeared. Nodules of B-deficient soybeans were damaged and showed low acetylene reduction activities. Soybean seed production was seriously depressed. Production of whole plant, nodules and pods was maximum at concentrations of 15–180 μg B L-1 (1.4–16 μm). At concentrations of 29–88 μg B L-1 nitrogen fix
To examine whether parental alleles were randomly transmitted from heterozygous donor plants to anther culture (AC)-derived plants, two AC-derived populations and one F2 population in rice were compared for 50 RFLP markers distributed on the rice chromosomes. Two populations which were developed through different anther culture methods (the ordinary method and the direct regeneration method) and the F2 population were produced from an F1 hybrid between distantly related cultivars of Nipponbare (
