Auxin-mediated statolith production for root gravitropism

Y. Zhang, P. He, X. Ma, Z. Yang, C. Pang, J. Yu, G. Wang, J. Friml, G. Xiao, New Phytologist 224 (2019) 761–774.

Download
OA 2019_NewPhytologist_Zhang_accepted.pdf 1.10 MB

Journal Article | Published | English

Scopus indexed
Author
Zhang, YuzhouIST Austria ; He, P; Ma, X; Yang, Z; Pang, C; Yu, J; Wang, G; Friml, JiríIST Austria ; Xiao, G
Department
Abstract
Root gravitropism is one of the most important processes allowing plant adaptation to the land environment. Auxin plays a central role in mediating root gravitropism, but how auxin contributes to gravitational perception and the subsequent response is still unclear. Here, we showed that the local auxin maximum/gradient within the root apex, which is generated by the PIN directional auxin transporters, regulates the expression of three key starch granule synthesis genes, SS4, PGM and ADG1, which in turn influence the accumulation of starch granules that serve as a statolith perceiving gravity. Moreover, using the cvxIAA‐ccvTIR1 system, we also showed that TIR1‐mediated auxin signaling is required for starch granule formation and gravitropic response within root tips. In addition, axr3 mutants showed reduced auxin‐mediated starch granule accumulation and disruption of gravitropism within the root apex. Our results indicate that auxin‐mediated statolith production relies on the TIR1/AFB‐AXR3‐mediated auxin signaling pathway. In summary, we propose a dual role for auxin in gravitropism: the regulation of both gravity perception and response.
Publishing Year
Date Published
2019-10-01
Journal Title
New Phytologist
Volume
224
Issue
2
Page
761-774
ISSN
eISSN
IST-REx-ID

Cite this

Zhang Y, He P, Ma X, et al. Auxin-mediated statolith production for root gravitropism. New Phytologist. 2019;224(2):761-774. doi:10.1111/nph.15932
Zhang, Y., He, P., Ma, X., Yang, Z., Pang, C., Yu, J., … Xiao, G. (2019). Auxin-mediated statolith production for root gravitropism. New Phytologist, 224(2), 761–774. https://doi.org/10.1111/nph.15932
Zhang, Yuzhou, P He, X Ma, Z Yang, C Pang, J Yu, G Wang, Jiří Friml, and G Xiao. “Auxin-Mediated Statolith Production for Root Gravitropism.” New Phytologist 224, no. 2 (2019): 761–74. https://doi.org/10.1111/nph.15932.
Y. Zhang et al., “Auxin-mediated statolith production for root gravitropism,” New Phytologist, vol. 224, no. 2, pp. 761–774, 2019.
Zhang Y, He P, Ma X, Yang Z, Pang C, Yu J, Wang G, Friml J, Xiao G. 2019. Auxin-mediated statolith production for root gravitropism. New Phytologist. 224(2), 761–774.
Zhang, Yuzhou, et al. “Auxin-Mediated Statolith Production for Root Gravitropism.” New Phytologist, vol. 224, no. 2, Wiley, 2019, pp. 761–74, doi:10.1111/nph.15932.
All files available under the following license(s):
Copyright Statement:
This Item is protected by copyright and/or related rights. [...]
Main File(s)
Access Level
OA Open Access
Date Uploaded
2020-10-14
MD5 Checksum
6488243334538f5c39099a701cbf76b9


Export

Marked Publications

Open Data IST Research Explorer

Sources

PMID: 31111487
PubMed | Europe PMC

Search this title in

Google Scholar