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Title: Characterization of DWARF14 Genes in Populus

Abstract

We report that strigolactones are a new class of plant hormones regulating shoot branching and symbiotic interactions with arbuscular mycorrhizal fungi. Studies of branching mutants in herbaceous plants have identified several key genes involved in strigolactone biosynthesis or signaling. The strigolactone signal is perceived by a member of the α/β-fold hydrolase superfamily, known as DWARF14 (D14). However, little is known about D14 genes in the woody perennial plants. Here we report the identification of D14 homologs in the model woody plant Populus trichocarpa. We showed that there are two D14 homologs in P. trichocarpa, designated as PtD14a and PtD14b that are over 95% similar at the amino acid level. Expression analysis indicated that the transcript level of PtD14a is generally more abundant than that of PtD14b. However, only PtD14a was able to complement Arabidopsis d14 mutants, suggesting that PtD14a is the functional D14 ortholog. Amino acid alignment and structural modeling revealed substitutions of several highly conserved amino acids in the PtD14b protein including a phenylalanine near the catalytic triad of D14 proteins. In conclusion, this study lays a foundation for further characterization of strigolactone pathway and its functions in the woody perennial plants.

Authors:
 [1];  [1];  [2];  [3];  [4];  [4];  [5];  [6];  [7];  [3];  [4];  [4];  [4]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division; Northeast Normal Univ., Changchun (China)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division; Univ. of Tennessee, Knoxville, TN (United States). Bredesen Center for Interdisciplinary Research and Graduate Education
  3. Univ. of Tennessee, Knoxville, TN (United States). Department of Biochemistry and Cellular and Molecular Biology
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division; Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Inst. for Biological Sciences
  6. Northeast Normal Univ., Changchun (China)
  7. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division; Univ. of Tennessee, Knoxville, TN (United States). Bredesen Center for Interdisciplinary Research and Graduate Education; Univ. of Tennessee, Knoxville, TN (United States). Genome Science and Technology Program
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER); Chinese Academy of Sciences (CAS)
OSTI Identifier:
1259854
Alternate Identifier(s):
OSTI ID: 1311227
Grant/Contract Number:  
AC05-00OR22725; 201019
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; Strigolactone; DWARF14; Populus

Citation Formats

Zheng, Kaijie, Wang, Xiaoping, Weighill, Deborah A., Guo, Hao-Bo, Xie, Meng, Yang, Yongil, Yang, Jun, Wang, Shucai, Jacobson, Daniel A., Guo, Hong, Muchero, Wellington, Tuskan, Gerald A., and Chen, Jin-Gui. Characterization of DWARF14 Genes in Populus. United States: N. p., 2016. Web. doi:10.1038/srep21593.
Zheng, Kaijie, Wang, Xiaoping, Weighill, Deborah A., Guo, Hao-Bo, Xie, Meng, Yang, Yongil, Yang, Jun, Wang, Shucai, Jacobson, Daniel A., Guo, Hong, Muchero, Wellington, Tuskan, Gerald A., & Chen, Jin-Gui. Characterization of DWARF14 Genes in Populus. United States. https://doi.org/10.1038/srep21593
Zheng, Kaijie, Wang, Xiaoping, Weighill, Deborah A., Guo, Hao-Bo, Xie, Meng, Yang, Yongil, Yang, Jun, Wang, Shucai, Jacobson, Daniel A., Guo, Hong, Muchero, Wellington, Tuskan, Gerald A., and Chen, Jin-Gui. Mon . "Characterization of DWARF14 Genes in Populus". United States. https://doi.org/10.1038/srep21593. https://www.osti.gov/servlets/purl/1259854.
@article{osti_1259854,
title = {Characterization of DWARF14 Genes in Populus},
author = {Zheng, Kaijie and Wang, Xiaoping and Weighill, Deborah A. and Guo, Hao-Bo and Xie, Meng and Yang, Yongil and Yang, Jun and Wang, Shucai and Jacobson, Daniel A. and Guo, Hong and Muchero, Wellington and Tuskan, Gerald A. and Chen, Jin-Gui},
abstractNote = {We report that strigolactones are a new class of plant hormones regulating shoot branching and symbiotic interactions with arbuscular mycorrhizal fungi. Studies of branching mutants in herbaceous plants have identified several key genes involved in strigolactone biosynthesis or signaling. The strigolactone signal is perceived by a member of the α/β-fold hydrolase superfamily, known as DWARF14 (D14). However, little is known about D14 genes in the woody perennial plants. Here we report the identification of D14 homologs in the model woody plant Populus trichocarpa. We showed that there are two D14 homologs in P. trichocarpa, designated as PtD14a and PtD14b that are over 95% similar at the amino acid level. Expression analysis indicated that the transcript level of PtD14a is generally more abundant than that of PtD14b. However, only PtD14a was able to complement Arabidopsis d14 mutants, suggesting that PtD14a is the functional D14 ortholog. Amino acid alignment and structural modeling revealed substitutions of several highly conserved amino acids in the PtD14b protein including a phenylalanine near the catalytic triad of D14 proteins. In conclusion, this study lays a foundation for further characterization of strigolactone pathway and its functions in the woody perennial plants.},
doi = {10.1038/srep21593},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {Mon Feb 15 00:00:00 EST 2016},
month = {Mon Feb 15 00:00:00 EST 2016}
}

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DWARF3 Participates in an SCF Complex and Associates with DWARF14 to Suppress Rice Shoot Branching
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journal, July 2014


MAX1 Encodes a Cytochrome P450 Family Member that Acts Downstream of MAX3/4 to Produce a Carotenoid-Derived Branch-Inhibiting Hormone
journal, March 2005


Signal integration in the control of shoot branching
journal, March 2011

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New genes in the strigolactone-related shoot branching pathway
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Branching in rice
journal, February 2011


The biology of strigolactones
journal, February 2013


MAX1 and MAX2 control shoot lateral branching in Arabidopsis
journal, March 2002

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  • Development, Vol. 129, Issue 5
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Works referencing / citing this record:

Strigolactone defective mutants of Arabidopsis exhibit delayed sepal senescence
preprint, January 2020


Perception and Signaling of Strigolactones
journal, August 2016


Strigolactones in an experimental context
journal, May 2019