Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 69, Issue 8, Pages 2619-2631Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.0c06283
Keywords
citrus fruit; Pichia galeiformis; induced resistance; transcriptome analysis; phenylpropanoid biosynthesis
Funding
- National Natural Science Foundation of China [31772027]
- Project of Chongqing Science and Technology Bureau, China [cstc2019jscx-dxwtBX0027]
Ask authors/readers for more resources
The study revealed that treatment with Pichia galeiformis can enhance disease resistance in citrus by modulating phenylpropanoid biosynthesis pathway, leading to changes in the levels of various compounds in citrus fruit.
This study aimed to investigate the effect of Pichia galeiformis on disease resistance and elucidate the changes in phenylpropane biosynthesis treated by P. galeiformis in postharvest citrus. The results showed that P. galeiformis reduced the disease incidence and lesion diameters without direct contact with the pathogen Penicillium digitatum. Transcriptome analysis revealed that phenylpropanoid biosynthesis was triggered by P. galeiformis. Genes encoding phenylpropanoid biosynthesis were upregulated, including phenylalanine ammonia-lyase (PAL), 4-coumaroyl-CoA ligase (4CL), cinnamate-4-hydroxylase (C4H), peroxidase (POD), cinnamyl alcohol dehydrogenase (CAD), O-methyltransferase, and hydroxyl cinnamoyl transferase. Moreover, P. galeiformis increased the activity of PAL, 4CL, C4H, POD, polyphenol oxidase, and CAD in citrus pericarp. In addition, P. galeiformis treated citrus displayed higher levels of total phenolic compounds, flavonoid, and lignin and higher amounts of ferulic and sinapic acid. In conclusion, these results suggested that P. galeiformis could induce resistance through modulating the pathway of phenylpropanoid biosynthesis in postharvest citrus.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available