期刊
NEW PHYTOLOGIST
卷 236, 期 5, 页码 1637-1654出版社
WILEY
DOI: 10.1111/nph.18474
关键词
anti-gravitropic offset; auxin transport; gravitropic setpoint angle; gravitropism; gravity sensing
资金
- MEXT KAKENHI [18H05488, 19H03254]
- Core Research for Evolutional Science and Technology (CREST) award from the Japan Science and Technology Agency (JST) [JPMJCR14M5]
- JSPS KAKENHI [22K15148]
Gravity is a fundamental environmental cue that affects plant development, and it is sensed by specialized cells called statocytes. These cells convert gravity information into biochemical signals, which lead to asymmetric auxin distribution and drive asymmetric cell division/expansion in plant organs. The anti-gravitropic offset (AGO) has been proposed as a hypothetical mechanism to determine the gravitropic setpoint angle (GSA). Gravitropism and AGO share a common gravity-sensing mechanism in statocytes.
Gravity is one of the fundamental environmental cues that affect plant development. Indeed, the plant architecture in the shoots and roots is modulated by gravity. Stems grow vertically upward, whereas lateral organs, such as the lateral branches in shoots, tend to grow at a specific angle according to a gravity vector known as the gravitropic setpoint angle (GSA). During this process, gravity is sensed in specialised gravity-sensing cells named statocytes, which convert gravity information into biochemical signals, leading to asymmetric auxin distribution and driving asymmetric cell division/expansion in the organs to achieve gravitropism. As a hypothetical offset mechanism against gravitropism to determine the GSA, the anti-gravitropic offset (AGO) has been proposed. According to this concept, the GSA is a balance of two antagonistic growth components, that is gravitropism and the AGO. Although the nature of the AGO has not been clarified, studies have suggested that gravitropism and the AGO share a common gravity-sensing mechanism in statocytes. This review discusses the molecular mechanisms underlying gravitropism as well as the hypothetical AGO in the control of the GSA.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据