Elevated CO2 delayed the chlorophyll degradation and anthocyanin accumulation in postharvest strawberry fruit

Food Chemistry
Dong LiZisheng Luo

Abstract

Colour is an important quality attribute for the consumer's acceptability of fruit. Elevated CO2 was applied to strawberry fruit to explore its influence on chlorophyll catabolism and anthocyanin synthesis. The results showed that 20% CO2 delayed the changes of a* and b* values in strawberry fruit. The degradation of chlorophyll was delayed in CO2 treated fruit by inhibiting the activities of chlorophyllase and down-regulating the expression of FaChl b reductase, FaPAO and FaRCCR. In addition, lower concentration of anthocyanins and lower activity of PAL, C4H, 4CL and CHS were recorded under the effect of 20% CO2. Meanwhile, qRT-PCR analysis showed that 13 genes involved in the phenylpropanoid pathway and the flavonoid biosynthesis pathway were also down-regulated under CO2 stress. However, no residual effect on pigment metabolism was observed when elevated CO2 was removed. Our study provided new insights into the regulation of elevated CO2 in the role of pigment metabolism in postharvest.

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Citations

May 14, 2020·Metabolites·Delphine M PottSonia Osorio
Aug 9, 2020·Frontiers in Plant Science·Birendra K PadhanViswanathan Chinnusamy
May 20, 2020·Journal of Agricultural and Food Chemistry·Nadia LombardiSheridan Lois Woo
Jul 8, 2021·Critical Reviews in Food Science and Nutrition·Wanli ZhangWeibo Jiang

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