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Evolutionary Divergence of Duplicated Hsf Genes in Populus

Journal Article · · Cells
DOI:https://doi.org/10.3390/cells8050438· OSTI ID:1513366
 [1];  [2];  [3]
  1. Fujian Agriculture and Forestry Univ., Fuzhou (China)
  2. Chinese Academy of Forestry, Beijing (China)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
+ Show Author Affiliations

Heat shock transcription factors (Hsfs), which function as the activator of heat shock proteins (Hsps), play multiple roles in response to environmental stress and the development of plants. The Hsf family had experienced gene expansion via whole-genome duplication from a single cell algae to higher plants. Yet, how the Hsf gene family went through evolutionary divergence after genome duplication is unknown. As a model wood species, Populus trichocarpa is widely distributed in North America with various ecological and climatic environments. In this study, we used P. trichocarpa as materials and identified the expression divergence of the PtHsf gene family in developmental processes, such as dormant bud formation and opening, catkins development, and in response to environments. Through the co-expression network, we further discovered the divergent co-expressed genes that related to the functional divergence of PtHsf. Then, we studied the alternative splicing events, single nucleotide polymorphism distribution and tertiary structures of members of the PtHsf gene family. In addition to expression divergence, we uncovered the evolutionary divergence in the protein level which may be important to new function formations and for survival in changing environments. This study comprehensively assessed the evolutionary divergence of a member of the PtHsf gene family after genome duplication, paving the way for further gene function analysis and genetic engineering.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1513366
Journal Information:
Cells, Journal Name: Cells Journal Issue: 5 Vol. 8; ISSN CELLC6; ISSN 2073-4409
Country of Publication:
United States
Language:
English

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Cited By (2)

Genome-Wide Identification, Classification, and Expression Analysis of the Hsf Gene Family in Carnation (Dianthus caryophyllus) journal October 2019
A Stress-Associated Protein, PtSAP13, From Populus trichocarpa Provides Tolerance to Salt Stress journal November 2019

Figures / Tables (10)

Figure 1(p. 5)figure Figure 1
Figure 2(p. 6)figure Figure 2
Figure 3(p. 7)figure Figure 3
Figure 4(p. 8)figure Figure 4
Table 1(p. 9)table Table 1
Table 2(p. 11)table Table 2
Figure 5(p. 14)figure Figure 5
Table 3(p. 15)table Table 3
Table 3 (Cont)(p. 17)table Table 3 (Cont)
Figure 6(p. 20)figure Figure 6

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Related Subjects

59 BASIC BIOLOGICAL SCIENCES
Populus
alternative splicing
co-expression network
gene duplication
gene expression
heat shock transcription factors
protein structure
single nucleotide polymorphism