Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Apr;21(4):677-679.
doi: 10.1111/pbi.13990. Epub 2023 Jan 13.

'Pink cotton candy'-A new dye-free cotton

Xiaoqing Li #  1 , Madeline Mitchell #  1   2 , Vivien Rolland  1 , Sue Allen  1 , Colleen MacMillan  1 , Filomena Pettolino  1
Affiliations

'Pink cotton candy'-A new dye-free cotton

Xiaoqing Li et al. Plant Biotechnol J. 2023 Apr.
No abstract available

Keywords: betalain; coloured cotton; fibre; pigment; textile.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
(a) The introduced betalain biosynthesis pathway. Tyrosine is hydroxylated by cytochrome P450 enzyme (CYP76AD1) to formL‐3,4‐dihydroxyphenylalanine (L‐DOPA). L‐DOPA is converted into either betalamic acid throughL‐DOPA 4,5‐dioxygenase (DODA1) or cyclo‐DOPA by cytochrome P450 enzyme (CYP76AD1). cyclo‐DOPA is glycosylated by the action of cyclo‐DOPA5‐O‐glucosyltransferase (cDOPA5GT) to form cyclo‐DOPA5‐O‐glucoside condensing with betalamic acid to form purple betacyanins. (b) Constructs with either constitutive (2 × 35S) or fibre‐specific promoter (LTP) driving expression of three betalain biosynthesis genes: BvDODA1 encoding the enzymeL‐DOPA 4,5‐dioxygenase (DODA), BvCYP76AD1 encoding the cytochrome P450 enzyme, and MjcDOPA5GT encoding cyclo‐DOPA5‐O‐glucosyltransferase. (c) Process of transformation with the 2 × 35S‐driven construct from embryogenic callus to red plantlet on selection media and then to a purple plant on the rooting media. (d) Freeze‐dried bolls (47 DPA). Fresh (e) and freeze‐dried (f) bolls of wild‐type (Coker 315) and fibre‐specific promoter‐driven betalain T0 plants at different developmental stages. Bolls were within 2 days of the stated DPA (22 and 27 DPA are precise stage). (g) Boxplots of fineness and maturity ratio of mature and freeze‐dried immature fibres measured by Cottonscope. # indicates line numbers. Black diamonds are means, and letters indicate significant differences between genotypes (top panel) or data sets (bottom panel), based on one‐way ANOVA with Fisher's LSD post hoc test. n = 3–6.
See this image and copyright information in PMC

References

    1. Gong, W. , Du, X. , Jia, Y. and Pan, Z. (2018) Color cotton and its utilization in China. In Cotton Fiber: Physics, Chemistry and Biology( Fang, D.D. , ed), pp. 117–132. Switzerland: Springer.
    1. Jackman, R.L. , and Smith, J.L. (1996). Anthocyanins and betalains. In: Natural Food Colorants, 2nd edn. (Placeholder Text Hendry, G.A.F. , Houghton, J.D. Placeholder Text, eds), pp. 244–309. Devon, UK: Springer Science & Business Media.
    1. Ke, L. , Yu, D. , Zheng, H. , Xu, Y. , Wu, Y. , Jiao, J. , Wang, X. et al. (2022) Function deficiency of GhOMT1 causes anthocyanidins over‐accumulation and diversifies fiber colors in cotton (Gossypium hirsutum). Plant Biotechnol. J. 20, 1546–1560. - PMC - PubMed
    1. Manzoor, J. and Sharma, M. (2020) Impact of textile dyes on human health and environment. In Impact of Textile Dyes on Public Health and the Environment( Wani, K.A. , Jangid, N.K. and Bhat, A.R. , eds), pp. 162–169. Hershey, PA: IGI Global.
    1. Murray, F. , Llewellyn, D. , McFadden, H. , Last, D. , Dennis, E.S. and Peacock, W.J. (1999) Expression of the Talaromyces flavus glucose oxidase gene in cotton and tobacco reduces fungal infection, but is also phytotoxic. Molecular Breeding 5, 219–232.

Publication types

LinkOut - more resources