In chemistry and biology, reactive oxygen species (ROS) are highly reactive chemicals formed from diatomic oxygen (O2), water, and hydrogen peroxide. Some prominent ROS are hydroperoxide (H 2 O 2), superoxide (O 2−), [1] hydroxyl …

活性氧类 （英語： Reactive oxygen species，ROS），是生物有氧代谢过程中的一种副产品，包括 氧离子 、 过氧化物 和含氧 自由基 等。 [1] 这些粒子相当微小，且由于存在未配对的自由 电子 而十分活跃。 过高的活性氧水平会对 细胞 和 基因 结构造成损坏。 活性氧，为含氧的，具有化学活性的分子，包括氧离子（oxygen ion）、过氧化氢（peroxide）、次氯酸、羥基自由基（hydroxyl radical）及單重態氧 (1 O 2)等。 因为核外的未配对电子的存在，具有很强的化学反应活性。 …

2022年6月27日 · Reactive oxygen species (ROS) play key roles in stress sensing, the integration of different stress-response signalling networks and the activation of plant...

2024年10月12日 · Reactive oxygen species (ROS) are a group of highly reactive molecules derived from molecular oxygen (O₂), water, and hydrogen peroxide. Prominent members of the ROS family include hydroperoxide (H₂O₂), superoxide (O₂⁻), …

There is extensive literature on the generation and effects of reactive oxygen species (ROS) in biological processes, both in terms of alteration and their role in cellular signaling and regulatory pathways. Cells produce ROS as a controlled physiological process, but increasing ROS becomes pathological and leads to oxidative stress and disease.

2022年2月21日 · ‘Reactive oxygen species’ (ROS) is a generic term that defines a wide variety of oxidant molecules with vastly different properties and biological functions that range from...

2020年3月30日 · ‘Reactive oxygen species’ (ROS) is an umbrella term for an array of derivatives of molecular oxygen that occur as a normal attribute of aerobic life. Elevated formation of...

Reactive oxygen species (ROS) were initially recognized as toxic by-products of aerobic metabolism. In recent years, it has become apparent that ROS plays an important signaling role in plants, controlling processes such as growth, development and especially response to biotic and abiotic environmental stimuli.

2024年2月1日 · Reactive oxygen species (ROS) is a term encompassing a group of highly reactive oxygen-derived molecules. In physiological systems, ROS production exists in concert with antioxidant defenses, which safeguard cells against higher, toxic levels of ROS.

'Reactive oxygen species' (ROS) is an umbrella term for an array of derivatives of molecular oxygen that occur as a normal attribute of aerobic life. Elevated formation of the different ROS leads to molecular damage, denoted as 'oxidative distress'.