Evidence mapPaperPMID 40033193Full record

ArticleBMC genomics2025

Transcriptome analyses for revealing leaf abscission of Cyclocarya paliurus stem segments in vitro.

Gaoyin Wu, Zhongcheng Peng, Qiuying Li, Xiang Zhang, Shuanggui Geng, Shuang Wang, Enrong Lu, Yingying Liu, Congjun Yuan, Xiaoli Wei and 1 more

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Article in BMC genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

11 authors.

Gaoyin Wu *School of Life Sciences, Guizhou Normal University, Guiyang, Guizhou Province, 550025, China.
Zhongcheng Peng *School of Life Sciences, Guizhou Normal University, Guiyang, Guizhou Province, 550025, China.
Qiuying LiSchool of Life Sciences, Guizhou Normal University, Guiyang, Guizhou Province, 550025, China.
Xiang ZhangSchool of Life Sciences, Guizhou Normal University, Guiyang, Guizhou Province, 550025, China.
Shuanggui GengSchool of Life Sciences, Guizhou Normal University, Guiyang, Guizhou Province, 550025, China.
Shuang WangSchool of Life Sciences, Guizhou Normal University, Guiyang, Guizhou Province, 550025, China.
Enrong LuSchool of Life Sciences, Guizhou Normal University, Guiyang, Guizhou Province, 550025, China.
Yingying LiuGuizhou Institute of Biology, Guiyang City, Guizhou Province, 550027, China.
Congjun YuanGuizhou Academy of Forestry, Guiyang, Guizhou Province, 550005, China.
Xiaoli WeiCollege of Forestry, Guizhou University, Guiyang, Guizhou, 550025, China.
Yingliang LiuSchool of Life Sciences, Guizhou Normal University, Guiyang, Guizhou Province, 550025, China. liuyl-23@126.com.

Funding

Guizhou Normal University grant code 2021-B05National Natural Science Foundation of China 31760124National Natural Science Foundation of China U1812401the Innovative Talent Team Project of Planting Breeding and Planting Cultivation for Precious Tree Species in Guizhou CXTD[2023]006
6 · The paper itself

Abstract

Leaf abscission of Cyclocarya paliurus stem segments in vitro is very serious, and more than 90% of the leaves gradually fall off with prolonged culture time, which hinders breeding. This study investigated the molecular mechanism of leaf abscission. The emerged leaves of C. paliurus stem segments were cultured for 22 days (T0) in vitro; leaves at 27 days (T1) and leaves that had fallen after ≥ 32 days (T2) were used as materials for analysis of the physiological characteristics and transcriptome data. During the leaf abscission process of C. paliurus, the Indole-3-acetic acid (IAA) content gradually decreased, whereas the carotenoid, 1-aminocyclopropane-1-carboxylic acid (ACC) and lignin contents and pectinase and cellulase activities significantly increased; 1807 and 10,908 DEGs were obtained in T0 vs T1 and T1 vs T2, respectively. The plant hormone signal transduction pathway, phenylpropanoid biosynthesis pathway and flavonoid biosynthesis pathway were significantly enriched in the KEGG metabolic pathway analysis. The differential expression of related genes affected AUX and Ethylene (ETH) biosynthesis and signal transduction, lignin synthesis, ROS metabolism, leaf color changes. Weighted gene coexpression network analysis (WGCNA) identified 10 hub genes (U-box protein, ERF5, ERF109, ERF4, SAUR36, CML19, MYC2-like,SPHK1, TOE3, POD55) that interact to activate abscission signaling, which subsequently influences the genes expression involved in the biosynthesis and signal transduction of auxin and ethylene; this resulted in an imbalance of endogenous hormone levels in the leaves, leading to the upregulation of pectinase, cellulase, and lignin biosynthesis genes and acceleration of the rupture of the abscission zone (AZ) cell and vascular cell wall, which ultimately led to leaf abscission. The present study illustrates a regulatory mechanism of leaf abscission of C. paliurus stem segments in vitro, which provides potential application value for guiding the inhibition of leaf abscission in vitro.

Indexed as

Gene Expression ProfilingJuglandaceaePlant LeavesPlant StemsTranscriptomeGene Expression Regulation, PlantIndoleacetic AcidsLigninPlant Growth Regulatorsindoleacetic acidIndoleacetic AcidsLigninPlant Growth RegulatorsCyclocarya paliurusLeaf abscissionMechanismStem segments

Identifiers

PMID40033193
PMCPMC11874125

What Socratic holds

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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 Socratic graph.