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Mechanical wounds expedited starch degradation in the wound tissues of potato tubers.
Int J Biol Macromol. 2023 May 01; 236:124036.IJ

Abstract

Starch degradation occurs rapidly in stressed plants, but it is unclear how starch degradation occurs in potato tubers after they incur mechanical wounding. In this study, we found that wounding significantly upregulated the expression levels of StGWD, StAMY, StBAM, and StISA, and decreased the starch content of potato tubers. Meanwhile, wounding markedly upregulated the expression levels of StSUS, StBG, and StINV genes, and increased the content of sucrose, glucose, and fructose. Furthermore, wounding reduced the proportion of small starch granules and increase that of large as well as medium starch granules, in this way enhancing the average size distribution of starch. Initially, the hard surface layer of starch granules was removed by wounding, but the internal channels and other structures were only slightly affected. Taken together, the results show that wounding can accelerate starch degradation by promoting the accumulation of sucrose, glucose, and fructose, and the hydrolysis of starch granules in potato tubers.

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Publisher Full Text (DOI)

Authors+Show Affiliations

College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China.

College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China.

College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China.

College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China.

College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China.

College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China.

College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China. Electronic address: biyang@gsau.edu.cn.

College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China.

College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; Department of Postharvest Science, Agricultural Research Organization, Rishon LeZion 7505101, Israel.

MeSH

Solanum tuberosumPlants, Genetically ModifiedStarchGlucoseSucroseFructosePlant Tubers

Pub Type(s)

Journal Article

Language

eng

PubMed ID

36921818

Citation

Ma, Li, et al. "Mechanical Wounds Expedited Starch Degradation in the Wound Tissues of Potato Tubers." International Journal of Biological Macromolecules, vol. 236, 2023, p. 124036.

Ma L, Liu Y, Han Y, et al. Mechanical wounds expedited starch degradation in the wound tissues of potato tubers. Int J Biol Macromol. 2023;236:124036.

Ma, L., Liu, Y., Han, Y., Deng, H., Jiang, H., Ren, Y., Bi, Y., Wang, Y., & Prusky, D. (2023). Mechanical wounds expedited starch degradation in the wound tissues of potato tubers. International Journal of Biological Macromolecules, 236, 124036. https://doi.org/10.1016/j.ijbiomac.2023.124036

Ma L, et al. Mechanical Wounds Expedited Starch Degradation in the Wound Tissues of Potato Tubers. Int J Biol Macromol. 2023 May 1;236:124036. PubMed PMID: 36921818.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Mechanical wounds expedited starch degradation in the wound tissues of potato tubers. AU - Ma,Li, AU - Liu,Yongxiang, AU - Han,Ye, AU - Deng,Huiwen, AU - Jiang,Hong, AU - Ren,Yingyue, AU - Bi,Yang, AU - Wang,Yi, AU - Prusky,Dov, Y1 - 2023/03/13/ PY - 2022/10/27/received PY - 2023/02/19/revised PY - 2023/03/09/accepted PY - 2023/4/12/medline PY - 2023/3/16/pubmed PY - 2023/3/15/entrez KW - Degradation KW - Granules KW - Mechanical wound KW - Solanum tuberosum L. KW - Soluble sugars SP - 124036 EP - 124036 JF - International journal of biological macromolecules JO - Int J Biol Macromol VL - 236 N2 - Starch degradation occurs rapidly in stressed plants, but it is unclear how starch degradation occurs in potato tubers after they incur mechanical wounding. In this study, we found that wounding significantly upregulated the expression levels of StGWD, StAMY, StBAM, and StISA, and decreased the starch content of potato tubers. Meanwhile, wounding markedly upregulated the expression levels of StSUS, StBG, and StINV genes, and increased the content of sucrose, glucose, and fructose. Furthermore, wounding reduced the proportion of small starch granules and increase that of large as well as medium starch granules, in this way enhancing the average size distribution of starch. Initially, the hard surface layer of starch granules was removed by wounding, but the internal channels and other structures were only slightly affected. Taken together, the results show that wounding can accelerate starch degradation by promoting the accumulation of sucrose, glucose, and fructose, and the hydrolysis of starch granules in potato tubers. SN - 1879-0003 UR - https://www.unboundmedicine.com/medline/citation/36921818/Mechanical_wounds_expedited_starch_degradation_in_the_wound_tissues_of_potato_tubers_ DB - PRIME DP - Unbound Medicine ER -