Received date: 2019-03-29
Accepted date: 2019-03-31
Online published: 2019-04-01
The most well established auxin signaling pathway is initiated from transport inhibitor response (TIR1)-mediated perception and degradation of Aux/IAAs, eventually leads to depression of auxin response factors (ARFs). A recent study from the Tongda Xu lab showed that high levels of auxin induced the cleavage of the plasma membrane localized transmembrane kinase receptor 1 (TMK1). The cleaved TMK1 C-terminus translocated to the nucleus and phosphorylated the nuclear localized non-canonical IAA32/34, which regulate the auxin signaling response by interacting with ARFs. The TMK1-IAA32/34-ARFs module, acting independently from the TIR1-dependent auxin signaling pathway, nicely interprets how the local auxin accumulation modulates asymmetric growth during apical hook development.
Key words： auxin; signal transduction; TMK1
Kongqin Hu, Zhaojun Ding . A TIR1-independent Auxin Signaling Module[J]. Chinese Bulletin of Botany, 2019 , 54(3) : 293 -295 . DOI: 10.11983/CBB19063
| [1] | Cao M, Chen R, Li P, Yu Y, Zheng R, Ge D, Zheng W, Wang X, Gu Y, Gelová Z, Friml J, Zhang H, Liu R, He J, Xu T ( 2019). TMK1-mediated auxin signaling regulates differential growth of the apical hook. Nature 568, 240-243. |
| [2] | Dharmasiri N, Dharmasiri S, Estelle M (2005a) . The F-box protein TIR1 is an auxin receptor. Nature 435, 441-445. |
| [3] | Dharmasiri N, Dharmasiri S, Weijers D, Lechner E, Yamada M, Hobbie L, Ehrismann JS, Jurgens G, Estelle M (2005b) . Plant development is regulated by a family of auxin receptor F box proteins. Dev Cell 9, 109-119. |
| [4] | Guilfoyle TJ, Hagen G ( 2007). Auxin response factors. Curr Opin Plant Biol 10, 453-460. |
| [5] | Kepinski S, Leyser O ( 2005). The Arabidopsis F-box protein TIR1 is an auxin receptor. Nature 435, 446-451. |
| [6] | Mutte SK, Hirotaka K, Carl R, Michael M, Ka-Shu WG, Dolf W ( 2018). Origin and evolution of the nuclear auxin response system. eLife 7, e33399. |
| [7] | Peer WA ( 2013). From perception to attenuation: auxin signaling and responses. Curr Opin Plant Biol 16, 561-568. |
| [8] | Xu F, He S, Zhang J, Mao Z, Wang W, Li T, Hua J, Du S, Xu P, Li L, Lian H, Yang HQ ( 2018). Photoactivated CRY1 and phyB interact directly with Aux/IAA proteins to inhibit auxin signaling in Arabidopsis. Mol Plant 11, 523-541. |
| [9] | Xu T, Dai N, Chen J, Nagawa S, Cao M, Li H, Zhou Z, Chen X, De Rycke R, Rakusová H, Wang W, Jones AM, Friml J, Patterson SE, Bleecker AB, Yang Z ( 2014). Cell surface ABP1-TMK auxin-sensing complex activates ROP GTPase signaling. Science 343, 1025-1028. |
| [10] | Yang C, Xie F, Jiang Y, Li Z, Huang X, Li L ( 2018). Phytochrome a negatively regulates the shade avoidance response by increasing auxin/indole acidic acid protein stability. Dev Cell 44, 29-41. |
/
| 〈 |
|
〉 |
Home