MdSOS2L1与MdMYB1形成复合物，通过转录调控苹果中的MdVHA-B1来控制液泡pH值。
MdSOS2L1 forms a complex with MdMYB1 to control vacuolar pH by transcriptionally regulating MdVHA-B1 in apples.
作者信息
Sun Cui-Hui, Zhang Quan-Yan, Sun Mei-Hong, Hu Da-Gang
机构信息
a State Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University , Tai-An, Shandong China.
出版信息
Plant Signal Behav. 2016;11(3):e1146846. doi: 10.1080/15592324.2016.1146846.
Abstract
Vacuolar pH is important and involves in many different physiological processes in plants. A recent paper published in Plant Physiology reveals that MdMYB1 regulates vacuolar pH by directly transcriptionally regulating proton pump genes and malate transporters genes, such as V-ATPase subunit gene MdVHA-B1. Here, we found that MdSOS2L1 in vitro did not directly interact with MdMYB1, however, in vivo formed a complex with MdMYB1 in the nucleus to regulate MdVHA-B1-mediated vacuolar acidification. This finding shed light on the role of MdSOS2L1 in transcriptionally regulating MdVHA-B1 in addition to its post-modified function in apples.
摘要
液泡pH值很重要，并且参与植物许多不同的生理过程。最近发表在《植物生理学》上的一篇论文表明，MdMYB1通过直接转录调控质子泵基因和苹果酸转运蛋白基因（如V-ATPase亚基基因MdVHA-B1）来调节液泡pH值。在这里，我们发现MdSOS2L1在体外不与MdMYB1直接相互作用，然而，在体内它与MdMYB1在细胞核中形成复合物，以调节MdVHA-B1介导的液泡酸化。这一发现揭示了MdSOS2L1在苹果中除了其翻译后修饰功能外，在转录调控MdVHA-B1中的作用。
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本文引用的文献
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Plant Cell Rep. 2016 Mar;35(3):705-18. doi: 10.1007/s00299-015-1914-6. Epub 2015 Dec 19.
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Plant Physiol. 2016 Mar;170(3):1315-30. doi: 10.1104/pp.15.01333. Epub 2015 Dec 4.
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