高濃度のボロンに耐える植物

Kyoko Miwa¹, Junpei Takano, Hiroyuki Omori

¹Biotechnology Research Center, University of Tokyo, Tokyo 113-8657, Japan.

Science (New York, N.Y.)

|December 1, 2007

まとめ

土壌のボロン濃度の高さは,世界中の作物の収穫量を低下させます. 科学者たちは大麦の植物を改良した.

科学分野:

植物生物学植物生物学
農業科学農業科学とは
バイオケミストリーバイオケミストリー

背景:

土壌におけるボロン (B) 毒性は,世界的に作物の生産性を大幅に低下させる.
南オーストラリアは,B毒性による大麦の収穫量の推定17%の損失を経験しています.
世界中の乾燥地域は,B過剰の土壌で特徴づけられ,食糧生産に影響を与えています.

研究の目的:

植物における高濃度のボロンへの耐性を与えるためのAtBOR4の可能性を調査する.
ボロンに毒性のある土壌での作物生産性の向上のための基盤を確立する.

主な方法:

ボロントランスポーター遺伝子BOR1のアラビドプシスのパラログであるAtBOR4の発現が研究されました.
ボロン輸送におけるAtBOR4の役割と,高いBレベルに対する植物反応の分析.

主要な成果:

AtBOR4の発現は,高レベルのBに対する耐性を示す植物をもたらした.
AtBOR4は,極地局所化されたボラートエクスポーターとして機能し,根からボロンの流出を促進します.

結論:

AtBOR4は,ボロン毒性に対する耐性のある作物を開発するための重要な遺伝子です.
この研究は,ボーンの影響を受けた乾燥した土地における農業戦略の基礎となる.

さらに関連する動画

08:12

Inducing Hairy Roots by Agrobacterium rhizogenes-Mediated Transformation in Tartary Buckwheat (Fagopyrum tataricum)

Published on: March 11, 2020

13:14

Measuring Fluxes of Mineral Nutrients and Toxicants in Plants with Radioactive Tracers

Published on: August 22, 2014

関連する概念動画

02:02

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.

02:40

Epiphytes, Parasites, and Carnivores

Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the biosynthesis of the...

02:41

Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.

02:11

The Roles of Bacteria and Fungi in Plant Nutrition

Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.

01:18

Production of Biopesticides

Biopesticides offer a sustainable alternative to chemical pesticides, utilizing microbial agents to control agricultural pests. Bacillus thuringiensis (Bt) is a widely employed bacterium known for its potent insecticidal activity. Bt biopesticides are favored for their specificity to insect pests, minimal environmental impact, and natural degradability.Mechanism of Bt Toxin Action Bt produces insecticidal crystal (Cry) proteins during its sporulation phase. These proteins form parasporal...

00:53

Tonicity in Plants

Tonicity describes the capacity of a cell to lose or gain water. It depends on the quantity of solute that does not penetrate the membrane. Tonicity delimits the magnitude and direction of osmosis and results in three possible scenarios that alter the volume of a cell: hypertonicity, hypotonicity, and isotonicity. Due to differences in structure and physiology, tonicity of plant cells is different from that of animal cells in some scenarios.Plants and Hypotonic EnvironmentsUnlike animal cells,...

関連する実験動画