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Wang Q, Wu X, Liu L, Yao D, Li J, Fang J, Chen X, Zhu L, Liu P, Ye Z, Jia B, Heng W. Transcriptome and metabolomic analysis to reveal the browning spot formation of 'Huangguan' pear. BMC PLANT BIOLOGY 2021; 21:321. [PMID: 34217211 PMCID: PMC8255024 DOI: 10.1186/s12870-021-03049-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 04/26/2021] [Indexed: 05/09/2023]
Abstract
BACKGROUND Browning spot (BS) disorders seriously affect the appearance quality of 'Huangguan' pear and cause economic losses. Many studies on BS have mainly focused on physiological and biochemical aspects, and the molecular mechanism remains unclear. RESULTS In the present study, the structural characteristics of 'Huangguan' pear with BS were observed via scanning electron microscopy (SEM), the water loss and brown spots were evaluated, and transcriptomic and metabolomics analyses were conducted to reveal the molecular mechanism underlying 'Huangguan' pear skin browning disorder. The results showed that the occurrence of BS was accompanied by a decrease in the wax layer and an increase in lignified cells. Genes related to wax biosynthesis were downregulated in BS, resulting in a decrease in the wax layer in BS. Genes related to lignin were upregulated at the transcriptional level, resulting in upregulation of metabolites related to phenylpropanoid biosynthesis. Expression of calcium-related genes were upregulated in BS. Cold-induced genes may represent the key genes that induce the formation of BS. In addition, the results demonstrated that exogenous NaH2PO4·2H2O and ABA treatment could inhibit the incidence of BS during harvest and storage time by increasing wax-related genes and calcium-related genes expression and increasing plant resistance, whereas the transcriptomics results indicated that GA3 may accelerate the incidence and index of BS. CONCLUSIONS The results of this study indicate a molecular mechanism that could explain BS formation and elucidate the effects of different treatments on the incidence and molecular regulation of BS.
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Affiliation(s)
- Qi Wang
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China
| | - Xinyi Wu
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China
| | - Li Liu
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China
| | - Daozhi Yao
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China
| | - Jinchao Li
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China
| | - Jie Fang
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China
| | - Xiaonan Chen
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China
| | - Liwu Zhu
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China
| | - Pu Liu
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China
| | - Zhenfeng Ye
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China
| | - Bing Jia
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China.
| | - Wei Heng
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China.
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Hu Y. Progress in protein structure and function studies in China during 2010-2011. SCIENCE CHINA-LIFE SCIENCES 2012; 55:927-30. [PMID: 23108870 DOI: 10.1007/s11427-012-4388-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2012] [Accepted: 09/16/2012] [Indexed: 11/28/2022]
Affiliation(s)
- Yonglin Hu
- National Laboratory of Macromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
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