名古屋大学 · 農学・生物学
高橋博一教授の研究室では、植物の根や胚軸における代謝・形態形成の分子機構に注目し、糖代謝やホルモン（エチレン・サイトカイニン）の制御が根の可塑性や発芽・発根に与える影響を解明しています。特に、嫌気的条件下でのアルコール発酵やアポトーシスの制御、Sucroseのシグナル伝達が根・茎の構造形成に与える影響を、マロウやトマト、トウモロコシをモデルに分子遺伝学的手法で解析しています。
Figures are computed from collected data and may differ slightly.
These results suggest that ADH1 is essential for sugar metabolism via glycolysis to ethanol fermentation in both the embryo and endosperm. In the endosperm, energy is presumably needed for synthesis of the amylases and for sucrose synthesis in the endosperm, as well as for sugar transport to the embryo.
As plants cannot relocate, they require effective root systems for water and nutrient uptake. Root development plasticity enables plants to adapt to different environmental conditions. Research on improvements in crop root systems is limited in comparison with that in shoots as the former are difficult to image. Breeding more effective root systems is proposed as the "second green revolution". There are several recent publications on root system architecture (RSA), but the methods used to analyz
Several genes related to cell wall modification and proteolysis are specifically up- or downregulated in cortical cells during lysigenous aerenchyma formation under aerobic conditions with ethylene treatment. The results suggest that ethylene is perceived in stelar cells, cortical cells and outer cell layers in the maize primary root, and that the cortical cell-specific PCD is controlled downstream of ethylene perception through subsequent gene expression, which is partly regulated by ROS, in th
These results indicate that cell division, as well as cell elongation, occur during coleoptile elongation in rice under complete submergence, and that the reduced ATP levels caused by the ADH1 deficiency repress both of them, thereby impairing coleoptile elongation in the rad mutant under submerged conditions.
The results demonstrate that sucrose derived from leaves is essential for AP and phellogen formation in soybean hypocotyls under waterlogged soil conditions. Maintenance of a high sucrose concentration is thus essential for the development of phellogen and AP and the differentiation of phellogen to AP.
These results suggest that iP-type cytokinins, which are locally synthesized in the hypocotyl, contribute to xylem development. The greater xylem development in Dutch cultivars might contribute to the high yield of the tomato.
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