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Evidence for the role of transposons in the recruitment of cis-regulatory motifs during the evolution of C4 photosynthesis

Overview of attention for article published in BMC Genomics, March 2016
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  • Above-average Attention Score compared to outputs of the same age (51st percentile)
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Title
Evidence for the role of transposons in the recruitment of cis-regulatory motifs during the evolution of C4 photosynthesis
Published in
BMC Genomics, March 2016
DOI 10.1186/s12864-016-2519-3
Pubmed ID
Authors

Chensi Cao, Jiajia Xu, Guangyong Zheng, Xin-Guang Zhu

Abstract

C4 photosynthesis evolved from C3 photosynthesis and has higher light, water, and nitrogen use efficiencies. Several C4 photosynthesis genes show cell-specific expression patterns, which are required for these high resource-use efficiencies. However, the mechanisms underlying the evolution of cis-regulatory elements that control these cell-specific expression patterns remain elusive. In the present study, we tested the hypothesis that the cis-regulatory motifs related to C4 photosynthesis genes were recruited from non-photosynthetic genes and further examined potential mechanisms facilitating this recruitment. We examined 65 predicted bundle sheath cell-specific motifs, 17 experimentally validated cell-specific cis-regulatory elements, and 1,034 motifs derived from gene regulatory networks. Approximately 7, 5, and 1,000 of these three categories of motifs, respectively, were apparently recruited during the evolution of C4 photosynthesis. In addition, we checked 1) the distance between the acceptors and the donors of potentially recruited motifs in a chromosome, and 2) whether the potentially recruited motifs reside within the overlapping region of transposable elements and the promoter of donor genes. The results showed that 7, 4, and 658 of the potentially recruited motifs might have moved via the transposable elements. Furthermore, the potentially recruited motifs showed higher binding affinity to transcription factors compared to randomly generated sequences of the same length as the motifs. This study provides molecular evidence supporting the hypothesis that transposon-driven recruitment of pre-existing cis-regulatory elements from non-photosynthetic genes into photosynthetic genes plays an important role during C4 evolution. The findings of the present study coincide with the observed repetitive emergence of C4 during evolution.

Twitter Demographics

The data shown below were collected from the profiles of 2 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 35 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
China 2 6%
Germany 1 3%
Unknown 32 91%

Demographic breakdown

Readers by professional status Count As %
Researcher 7 20%
Student > Bachelor 6 17%
Student > Ph. D. Student 6 17%
Student > Master 4 11%
Student > Doctoral Student 3 9%
Other 5 14%
Unknown 4 11%
Readers by discipline Count As %
Agricultural and Biological Sciences 23 66%
Biochemistry, Genetics and Molecular Biology 8 23%
Unknown 4 11%

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 March 2016.
All research outputs
#3,349,722
of 7,377,175 outputs
Outputs from BMC Genomics
#2,869
of 5,420 outputs
Outputs of similar age
#126,678
of 278,481 outputs
Outputs of similar age from BMC Genomics
#149
of 222 outputs
Altmetric has tracked 7,377,175 research outputs across all sources so far. This one has received more attention than most of these and is in the 52nd percentile.
So far Altmetric has tracked 5,420 research outputs from this source. They receive a mean Attention Score of 4.1. This one is in the 42nd percentile – i.e., 42% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 278,481 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 51% of its contemporaries.
We're also able to compare this research output to 222 others from the same source and published within six weeks on either side of this one. This one is in the 31st percentile – i.e., 31% of its contemporaries scored the same or lower than it.