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
. 2022 Mar;64(3):621-624.
doi: 10.1111/jipb.13219. Epub 2022 Feb 23.

Lysozyme inhibits postharvest physiological deterioration of cassava

Affiliations

Lysozyme inhibits postharvest physiological deterioration of cassava

Xiaoyun Wu et al. J Integr Plant Biol. 2022 Mar.

Abstract

After harvest, cassava (Manihot esculenta Crantz) storage roots undergo rapid postharvest physiological deterioration, producing blue-brown discoloration in the vasculature due to the production of polyphenolics (mainly quinones and coumarins) by enzymes such as polyphenol oxidase (PPO). Here, we report the application of hen egg-white lysozyme (HEWL), a natural PPO inhibitor, in transgenic cassava to repress the symptoms of postharvest physiological deterioration. The HEWL-expressing transgenic plants had lower levels of the two main cassava coumarins tested, scopoletin and scopolin, compared with wild type. HEWL-expressing cassava also showed increased tolerance of oxidative stress. Overall, the lysozyme-PPO system proved to be functional in plants for repressing PPO-mediated commercial product browning.

Keywords: cassava; inhibitor; lysozyme; polyphenol oxidase; post-harvest physiological deterioration.

PubMed Disclaimer

Similar articles

Cited by

References

REFERENCES

    1. Bayoumi, S.A., Rowan, M.G., Blagbrough, I.S., and Beeching, J.R. (2008). Biosynthesis of scopoletin and scopolin in cassava roots during post-harvest physiological deterioration: The E-Z-isomerisation stage. Phytochemistry 69: 2928-2936.
    1. Düring, K., Porsch, P., Flaudung, M., and Lörz, H. (1993). Transgenic potato plants resistant to the phytopathogenic bacterium Erwinia carotovora. Plant J. 3: 587-598.
    1. Goel, N., and Paul, P.K. (2015). Polyphenol oxidase and lysozyme mediate induction of systemic resistance in tomato, when a bioelicitor is used. J. Plant Protect. Res. 55: 343-350.
    1. Nakajima, H., Muranaka, T., Ishige, F., Akutsu, K., and Oeda, K. (1997). Fungal and bacterial disease resistance in transgenic plants expressing human lysozyme. Plant Cell Rep. 16: 674-679.
    1. Pei, X.W., Chen, S.K., Wen, R.M., Ye, S., Huang, J.Q., Zhang, Y.Q., Wang, B.S., Wang, J.X., and Jia, S.R. (2005). Creation of transgenic bananas expressing human lysozyme gene for Panama wilt resistance J. Integr. Plant Biol. 47: 971-977.

LinkOut - more resources