Location: Cotton Fiber Bioscience Research
2022 Annual Report
Accomplishments
1. Rearrangement of chromosome DNA causes short cotton fibers. Fiber length is one of the most important quality attributes and cotton with longer fiber can demand premium price. Ligon-lintless 2 is a naturally occurring cotton mutant that produces very short fibers, but what causes the short fiber phenotype has been unknown until now. ARS researchers in New Orleans, Louisiana, discovered that a large structural rearrangement had occurred in the mutant on the chromosome called D13. As a result of the rearrangement, the transport of enzymes that cause fiber elongation is hindered. With this knowledge, we can now focus on increasing the transport of this enzyme in normal cotton, which in turn may cause longer fibers in cotton. This may be accomplished with traditional breeding or biotechnological tools.
Review Publications
Kim, H.J., Kato, N., Ndathe, R., Thyssen, G.N., Jones, D.C., Ratnayaka, H. 2021. Evidence for thermosensitivity of the cotton (Gossypium hirsutum L.) immature fiber (im) mutant via hypersensitive stomatal activity. PLoS ONE. 16(12):e0259562. https://doi.org/10.1371/journal.pone.0259562.
Wang, M., Qi, Z., Thyssen, G.N., Naoumkina, M.A., Jenkins, J.N., McCarty, J.C., Xiao, Y., Li, J., Zhang, X., Fang, D.D. 2022. Genomic interrogation of a MAGIC population highlights genetic factors controlling fiber quality traits in cotton. Communications Biology. 5:60. https://doi.org/10.1038/s42003-022-03022-7.
Pei, L., Huang, X., Liu, Z., Tian, X., You, J., Li, J., Fang, D.D., Lindsey, K., Zhu, L., Zhang, X., Wang, M. 2022. Dynamic 3D genome architecture of cotton fiber reveals subgenome-coordinated chromatin topology for 4-staged single-cell differentiation. Genome Biology. 23:45. https://doi.org/10.1186/s13059-022-02616-y.
Kim, H.J., Delhom, C.D., Liu, Y., Jones, D.C., Xu, B. 2021. Characterizations of a distributional parameter that evaluates contents of immature fibers within and among cotton samples. Cellulose. 28:9023-9038. https://doi.org/10.1007/s10570-021-04135-8.
Zhu, Y., Thyssen, G.N., Abdelraheem, A., Teng, Z., Fang, D.D., Jenkins, J.N., Mccarty Jr, J.C., Wedegaertner, T., Hake, K., Zhang, J. 2022. A GWAS identified a major QTL for resistance to Fusarium wilt (Fusarium oxysporum f. sp. vasinfectum) race 4 in a MAGIC population of Upland cotton and a meta-analysis of QTLs for Fusarium wilt resistance. Theoretical and Applied Genetics. 135:2297-2312. https://doi.org/10.1007/s00122-022-04113-z.
