Evidence map›Paper›PMID 40301758›Full record

ArticleBMC genomics2025

Genomic insights into the mechanisms of body size evolution in Serpentes.

Tian Xia, Shengyang Zhou, Zhihao Zhang, Xiaoyang Wu, Xibao Wang, Jianqun Ding, Lei Zhang, Guolei Sun, Xiufeng Yang, Xiaodong Gao and 1 more

Abstract read
In one paragraph

Article in BMC genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Tian Xia *College of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China.
Shengyang Zhou *College of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China.
Zhihao Zhang *College of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China.
Xiaoyang WuCollege of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China.
Xibao WangCollege of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China.
Jianqun DingCollege of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China.
Lei ZhangCollege of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China.
Guolei SunCollege of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China.
Xiufeng YangCollege of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China.
Xiaodong GaoCollege of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China.
Honghai ZhangCollege of Life Sciences, Qufu Normal University, Jingxuan West Street No. 57, Qufu, 273165, China. zhanghonghai67@126.com.

Funding

National Natural Science Foundation of China 32200349National Natural Science Foundation of China 32200407National Natural Science Foundation of China 32270444Natural Science Foundation of Shandong Province ZR2022QC153Natural Science Foundation of Shandong Province ZR2023ZD47Postdoctoral Fellowship Program of CPSF GZC20231395
6 · The paper itself

Abstract

backgroundBody size is a critical trait that influences an animal's physiology, behavior, and ecology. However, the molecular mechanisms underlying its evolution remain poorly understood, particularly in snakes. Snakes exhibit an extremely wide range of body sizes and strong ecological adaptability. Among snake species, the maximum body mass exceeds the minimum by over 200,000-fold, while the maximum body length surpasses the minimum by more than 110-fold.

resultsThrough phylogenomic and comparative genomic analyses of 26 snake genomes, we identified 77 body size-associated genes (BSAGs) related to body length or body mass, highlighting key genetic drivers of body size evolution. Functional enrichment analyses revealed that metabolic pathways, particularly fatty acid metabolism and oxidoreductase activity, underwent significant expansion and positive selection, suggesting metabolic adaptations crucial for meeting the energetic demands of increased body size. Immune system-related genes, including those involved in antigen processing and presentation, similarly showed signatures of expansion and adaptive evolution, highlighting strengthened immune defenses in large-bodied snakes. Additionally, key candidate genes, such as YAP1, PLAG1, MGAT1 and SPRY1, exhibited both strong selection signals and correlation signals, and are functionally involved in developmental pathways critical for growth regulation.

conclusionsOur findings reveal a complex interplay of sensory, immune, metabolic, and growth-related genetic adaptations driving large body size evolution in snakes. This study provides novel insights into the molecular underpinnings of snake body size diversification and advances our understanding of their evolutionary history.

Indexed as

Biological EvolutionBody SizeEvolution, MolecularGenomicsSnakesAnimalsGenomePhylogenySelection, Geneticbody size evolutioncoparative genomicspositive selectionSerpentes

Identifiers

PMID40301758
PMCPMC12039104

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.