TY - JOUR
T1 - A phytochrome-B-mediated regulatory mechanism of phosphorus acquisition
AU - Sakuraba, Yasuhito
AU - Kanno, Satomi
AU - Mabuchi, Atsushi
AU - Monda, Keina
AU - Iba, Koh
AU - Yanagisawa, Shuichi
N1 - Funding Information:
We thank the Arabidopsis Biological Resource Center for seeds from the transfer-DNA lines, J. Paz-Ares (Centro Nacional de Biotecnología, Spain) for seeds of the phr1 phl1 mutant and M. Tsumura in our laboratory for assistance in plant cultivation. This work was supported in part by JST CREST grant number JPMJCR 15O5 to S.Y. and K.I., JSPS KAKENHI grant number 26221103 to K.I. and S.Y., and grant numbers 25252014 to S.Y., 17H05024 to Y.S. and 16H07045 to K.M.
Publisher Copyright:
© 2018, The Author(s), under exclusive licence to Springer Nature Limited.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Phosphorus (P) is a key macronutrient whose availability has a profound effect on plant growth and productivity. The understanding of the mechanism underlying P availability-responsive P acquisition has expanded largely in the past decade; however, effects of other environmental factors on P acquisition and utilization remain elusive. Here, by imaging natural variation in phosphate uptake in 200 natural accessions of Arabidopsis, we identify two accessions with low phosphate uptake activity, Lm-2 and CSHL-5. In these accessions, natural variants of phytochrome B were found to cause both decreased light sensitivity and lower phosphate uptake. Furthermore, we also found that expression levels of phosphate starvation-responsive genes are directly modulated by phytochrome interacting factors (PIF) PIF4/PIF5 and HY5 transcription factors whose activity is under the control of phytochromes. These findings disclose a new molecular mechanism underlying red-light-induced activation of phosphate uptake, which is responsible for different activity for P acquisition in some natural accessions of Arabidopsis.
AB - Phosphorus (P) is a key macronutrient whose availability has a profound effect on plant growth and productivity. The understanding of the mechanism underlying P availability-responsive P acquisition has expanded largely in the past decade; however, effects of other environmental factors on P acquisition and utilization remain elusive. Here, by imaging natural variation in phosphate uptake in 200 natural accessions of Arabidopsis, we identify two accessions with low phosphate uptake activity, Lm-2 and CSHL-5. In these accessions, natural variants of phytochrome B were found to cause both decreased light sensitivity and lower phosphate uptake. Furthermore, we also found that expression levels of phosphate starvation-responsive genes are directly modulated by phytochrome interacting factors (PIF) PIF4/PIF5 and HY5 transcription factors whose activity is under the control of phytochromes. These findings disclose a new molecular mechanism underlying red-light-induced activation of phosphate uptake, which is responsible for different activity for P acquisition in some natural accessions of Arabidopsis.
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U2 - 10.1038/s41477-018-0294-7
DO - 10.1038/s41477-018-0294-7
M3 - Article
C2 - 30518831
AN - SCOPUS:85057757069
SN - 2055-026X
VL - 4
SP - 1089
EP - 1101
JO - Nature Plants
JF - Nature Plants
IS - 12
ER -