{"id":4965,"date":"2020-02-24T19:25:45","date_gmt":"2020-02-24T10:25:45","guid":{"rendered":"http:\/\/163.180.4.222\/lab\/?p=4965"},"modified":"2020-02-24T19:25:45","modified_gmt":"2020-02-24T10:25:45","slug":"how-plant-cells-sense-the-outside-world-through-hydrogen-peroxide","status":"publish","type":"post","link":"https:\/\/biochemistry.khu.ac.kr\/lab\/?p=4965","title":{"rendered":"How plant cells sense the outside world through hydrogen peroxide"},"content":{"rendered":"

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The discovery of a sensor that detects hydrogen peroxide at the surface of a cell provides insights into the mechanisms by which plant cells perceive and respond to environmental stress.<\/h5>\n

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Chemically reactive, oxygen-containing molecules called reactive oxygen species (ROS) are central to cell function. Plant cells generate various ROS, including hydrogen peroxide (H2<\/sub>O2<\/sub>), which has a key role in cell signalling. It is produced in an extracellular space between the plasma membrane and cell wall called the apoplast, in response to a range of factors, including stressors, plant hormones such as abscisic acid, and physical or chemical changes outside the cell1<\/a><\/sup>. But whether and how this extracellular H2<\/sub>O2<\/sub>\u00a0(eH2<\/sub>O2<\/sub>) is sensed at the cell surface is unknown.\u00a0Writing in\u00a0Nature<\/i><\/a>, Wu\u00a0et al.<\/i>2<\/a><\/sup>\u00a0identify the first known cell-surface H2<\/sub>O2<\/sub>\u00a0receptor in plants.<\/p>\n

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