Cited 24 time in webofscience Cited 26 time in scopus

BIL1-mediated MP phosphorylation integrates PXY and cytokinin signalling in secondary growth

Title
BIL1-mediated MP phosphorylation integrates PXY and cytokinin signalling in secondary growth
Authors
Han, So EunCho, Hyun WooNoh, Jae GyunQi, JiyanJung, Hee JungNam, Hee JaeLee, Seung ChulHwang, DaeheeGreb, ThomasHwang, Il Doo
DGIST Authors
Hwang, Daehee
Issue Date
2018-08
Citation
Nature plants, 4(8), 605-614
Type
Article
Article Type
Article
Keywords
VASCULAR-TISSUE-DEVELOPMENTXYLEM CELL-DIFFERENTIATIONTRANSCRIPTION FACTORPROTEIN PHOSPHATASERESPONSE REGULATORSARABIDOPSIS LEAVESPLANT DEVELOPMENTCAMBIAL ACTIVITYAUXIN RESPONSEWOOD FORMATION
ISSN
2055-0278
Abstract
Vascular cambium proliferation in plants is crucial for the generation of vascular tissues and for mechanical strength. Phytohormones and mobile peptides are key regulators of vascular cambial activity during secondary growth; however, the signalling cross-talk underlying their coordinated action is largely unknown. Here, we reveal that BIN2-LIKE 1 (BIL1), a glycogen synthase kinase 3, integrates the PHLOEM INTERCALATED WITH XYLEM/tracheary element differentiation inhibitory factor (TDIF) RECEPTOR (PXY/TDR) module into MONOPTEROS/AUXIN RESPONSE FACTOR 5 (MP/ARF5) transcription factor action during secondary growth. BIL1-mediated phosphorylation of MP/ARF5 enhances its negative effect on vascular cambial activity, which upregulates the negative regulators of cytokinin signalling ARABIDOPSIS RESPONSE REGULATOR 7 (ARR7) and ARR15. PXY/TDR inhibits BIL1 activity, which attenuates the effect of MP/ARF5 on ARR7 and ARR15 expression, thus increasing vascular cambial activity. Together, these results suggest that BIL1 is a key mediator that links peptide signalling with auxin–cytokinin signalling for the maintenance of cambial activity. © 2018 The Author(s)
URI
http://hdl.handle.net/20.500.11750/9021
DOI
10.1038/s41477-018-0180-3
Publisher
Nature Publishing Group
Files:
There are no files associated with this item.
Collection:
Department of New BiologySystems Biology and Medicine Lab1. Journal Articles


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