フィトサイトカインシグナリングは,植物免疫と水分損失で胃を再開する
Zunyong Liu1, Shuguo Hou2,3, Olivier Rodrigues1,4
1Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA.
Nature
|May 4, 2022
まとめ
植物がSCREW-NUT信号を使って 胃を開き 水の損失と病原体の防御を バランスします このシステムは ストレス下での植物生存に不可欠な ストマタル閉塞を防ぎます
科学分野:
- 植物生物学
- 植物生理学
- 分子植物病理学
背景:
- 胃はガス交換と水分損失を制御し 地球の循環に影響を与えます
- 胃の閉塞は防御に役立ちますが,長時間閉塞は植物に害を与えます.
- ストレス下での口腔の再開のダイナミックな調節は十分に理解されていません.
研究 の 目的:
- 口腔の再開における SCREW-NUT信号の役割を調査する.
- SCREW-NUTによる口腔調節の分子メカニズムを解明する.
- 変化する環境における 植物の健康への影響を理解する
主な方法:
- 防御と水分損失を調節する小型のフィトキトキン (SCREWS) ペプチドと植物不反応受容体 (NUT) キナーゼを特定した.
- SCREW-NUTとアブシシス酸 (ABA) と微生物関連分子パターン (MAMP) の相互作用を調査した.
- ABA INSENSITIVE 1 (ABI1) とABI2のリン酸化とOPEN STOMATA 1 (OST1) の活性について分析した.
主要な成果:
- SCREWSとNUTはフィトサイトカインとして作用し,SERK共受容体を勧誘する.
- SCREW-NUTシグナリングは,ABAとMAMP誘発の口腔閉塞を逆調節する.
- このシステムは水分損失を促進し,水生生息地を破壊することによって病原体植民を制限します.
結論:
- SCREW-NUTシステムは,口腔の再開を動的に制御します.
- 脱水や病原菌による 制御不能な口腔閉塞を防ぐ
- このメカニズムは,陸上の植物の適性を最適化するために不可欠です.
関連する概念動画
Regulation of Transpiration by Stomata
29.2K
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
29.2K
Responses to Drought and Flooding
11.1K
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.
11.1K
Cell Signaling in Plants
5.8K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.8K
Responses to Heat and Cold Stress
13.9K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.9K
Adaptations that Reduce Water Loss
26.4K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
26.4K
Defenses Against Pathogens and Herbivores
27.6K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
27.6K


