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Updated: Oct 2, 2025

Agrobacterium-Mediated Virus-Induced Gene Silencing Assay In Cotton
Published on: August 20, 2011
Comparative transcriptome analysis reveals the regulation network for fiber strength in cotton
Yihao Zang1,2, Yan Hu1, Fan Dai1
1Zhejiang Provincial Key Laboratory of Crop Genetic Resources, Institute of Crop Science, College of Agriculture and Biotechnology, Plant Precision Breeding Academy, Zhejiang University, Hangzhou, 310058, Zhejiang, People's Republic of China.
Objective:
Determine the effect of secondary cell wall (SCW) thickness and microcrystalline cellulose content (MCC) on mature fiber strength (FS) and reveal through comparative transcriptome analysis the molecular regulation network governing FS in cotton.
Results:
Transmission electron microscope (TEM) analysis of two parent varieties, Prema with elite FS and 86-1 with weak fiber, revealed significant difference in the SCW but not in MCC. Transcriptome analysis revealed that genes differentially expressed during SCW thickening (20 DPA) are highly related to FS; in particular, up-regulated genes such as UDPG, CESA2, and NAC83 were important in SCW thickening, likely contributing to higher FS. GO and KEGG enrichment analysis revealed the common up-regulated genes to be enriched in carbon metabolism and terms relating to the cell wall.
Conclusions:
We developed two recombinant inbred lines with elite FS, selected from the filial generation of Prema and 86-1. By comparing transcriptomic data, we revealed the gene expression network governing SCW thickness in mature fiber. Our results provide solid insights into the relationship of the SCW and FS.
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