Expression of the CpXTH6 and CpXTH23 Genes in Carica papaya Fruits

Zúñiga-Hernández, Melvin E.; Rosas-Quijano, Raymundo; Salvador-Figueroa, Miguel; Vázquez-Ovando, Alfredo; Gálvez-López, Didiana

doi:10.3390/ijms26104490

Open AccessArticle

Expression of the CpXTH6 and CpXTH23 Genes in Carica papaya Fruits

by

Melvin E. Zúñiga-Hernández

,

Raymundo Rosas-Quijano

,

Miguel Salvador-Figueroa

,

Alfredo Vázquez-Ovando

and

Didiana Gálvez-López

^*

Instituto de Biociencias, Universidad Autónoma de Chiapas, Boulevard Príncipe Akishino Sin Número, Colonia Solidaridad 2000, Tapachula 30789, Chiapas, Mexico

^*

Author to whom correspondence should be addressed.

Int. J. Mol. Sci. 2025, 26(10), 4490; https://doi.org/10.3390/ijms26104490

Submission received: 15 April 2025 / Revised: 30 April 2025 / Accepted: 2 May 2025 / Published: 8 May 2025

(This article belongs to the Special Issue Molecular Research of Tropical Fruit (2nd Edition))

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Abstract

Mexico is the center of origin and the leading exporter of papaya (Carica papaya) to the United States of America and Canada. The changes in the fruit’s firmness during ripening result from the action of several enzymes implicated in the synthesis/hydrolysis of cell wall polysaccharides. A vast family of genes encodes xyloglucan endotransglucosylase/hydrolase (XTH) enzymes, which act on cellulose-bound xyloglucan bonds. There are few reports on the action of the XTH6 and XTH23 genes; therefore, their participation in the fruit development and maturity processes has yet to be fully known. The expression levels of the CpXTH6 and CpXTH23 genes, and their correlation with firmness, at different stages of development and ripening of the C. papaya fruit were determined in this work. The CpXTH6 and CpXTH23 genes reached their highest expression level during fruit development. These results suggest that these genes are activated in papaya mainly during fruit development to encode the enzymes that allow cell growth and maintain fruit firmness. These findings could be used to target papaya breeding texture quality and the speed of fruit growth.

Keywords: xyloglucan; fruit development; cell wall; qPCR; papaya

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MDPI and ACS Style

Zúñiga-Hernández, M.E.; Rosas-Quijano, R.; Salvador-Figueroa, M.; Vázquez-Ovando, A.; Gálvez-López, D. Expression of the CpXTH6 and CpXTH23 Genes in Carica papaya Fruits. Int. J. Mol. Sci. 2025, 26, 4490. https://doi.org/10.3390/ijms26104490

AMA Style

Zúñiga-Hernández ME, Rosas-Quijano R, Salvador-Figueroa M, Vázquez-Ovando A, Gálvez-López D. Expression of the CpXTH6 and CpXTH23 Genes in Carica papaya Fruits. International Journal of Molecular Sciences. 2025; 26(10):4490. https://doi.org/10.3390/ijms26104490

Chicago/Turabian Style

Zúñiga-Hernández, Melvin E., Raymundo Rosas-Quijano, Miguel Salvador-Figueroa, Alfredo Vázquez-Ovando, and Didiana Gálvez-López. 2025. "Expression of the CpXTH6 and CpXTH23 Genes in Carica papaya Fruits" International Journal of Molecular Sciences 26, no. 10: 4490. https://doi.org/10.3390/ijms26104490

APA Style

Zúñiga-Hernández, M. E., Rosas-Quijano, R., Salvador-Figueroa, M., Vázquez-Ovando, A., & Gálvez-López, D. (2025). Expression of the CpXTH6 and CpXTH23 Genes in Carica papaya Fruits. International Journal of Molecular Sciences, 26(10), 4490. https://doi.org/10.3390/ijms26104490

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Expression of the CpXTH6 and CpXTH23 Genes in Carica papaya Fruits

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