Phytohormone auxin is a master regulator in plant growth and development. Regulation of cellular auxin
level plays a central role in plant development. Auxin polar transport system modulates an auxin gradient
that determines plant developmental process in response to environmental conditions and developmental
programs. Photolabile caged auxins allow optical control of artificial auxin gradients at cellular
resolution. Especially, two-photon uncaging system achieves high spatiotemporal control of photolysis
reaction at two-photon cross-section. However, the development of caged versions of auxin has been
limited by the instability of the caged auxins to higher plant metabolic activities. Here, we describe
the synthesis and application of highly stable caged auxins, 4-methoxy-7-nitroindolinyl (MNI)-caged
auxins. Natural auxin, indole 3-acetic acid, and two synthetic auxins, 1-NAA and 2,4-D were caged by
MNI caging group. MNI-caged auxins showed a high stability in planta and a rapid release the original
auxin when photolyzed. We demonstrated that optical control of auxin-responsive gene expression
and auxin-related physiological responses by using MNI-caged auxins. We anticipate that MNI-caged
auxins will be an effective tool for high-resolution control of endogenous auxin level.
phytohormone Phytohormone auxin is a master regulator in plant growth and development. Regulation of cellular auxin
กฎระเบียบของออกซินโทรศัพท์มือถือระดับมีบทบาทสำคัญในการพัฒนาโรงงาน ระบบขนส่งขั้วโลกออกซิน ลาดออกซินที่กำหนดกระบวนการพัฒนาพืชในการตอบสนองต่อสภาพแวดล้อมและการพัฒนาโปรแกรม Photolabile auxins กรงให้การควบคุมแสงของการไล่ระดับสีออกซินเทียมที่โทรศัพท์มือถือที่มีความละเอียด โดยเฉพาะอย่างยิ่งสองโฟตอนระบบ ปฏิกิริยาที่สองโฟตอน อย่างไรก็ตามการพัฒนารุ่นขังอยู่ในกรงของออกซินได้รับการจำกัด โดยความไม่แน่นอนของ level plays a central role in plant development. Auxin polar transport system modulates an auxin gradient
that determines plant developmental process in response to environmental conditions and developmental
programs. Photolabile caged auxins allow optical control of artificial auxin gradients at cellular
resolution. Especially, two-photon uncaging system achieves high spatiotemporal control of photolysis
reaction at two-photon cross-section. However, the development of caged versions of auxin has been
limited by the instability of the caged auxins to higher plant metabolic activities. Here, we describe
the synthesis and application of highly stable caged auxins, 4-methoxy-7-nitroindolinyl (MNI)-caged
auxins. Natural auxin, indole 3-acetic acid, and two synthetic auxins, 1-NAA and 2,4-D were caged by
MNI caging group. MNI-caged auxins showed a high stability in planta and a rapid release the original
auxin when photolyzed. We demonstrated that optical control of auxin-responsive gene expression
and auxin-related physiological responses by using MNI-caged auxins. We anticipate that MNI-caged
auxins will be an effective tool for high-resolution control of endogenous auxin level.
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