REGULATION OF NITRIC OXIDE TREATMENT IN THE BIOSYNTHESIS OF AROMA VOLATILES IN PEACH FRUIT DURING STORAGE
文献类型： 外文期刊
作者： Cai, Hongfang 1 ; Han, Shuai 3 ; Pan, Chen 1 ; Zhao, Taotao 1 ; Yu, Mingliang 4 ; Ma, Ruijuan 4 ; Yu, Zhifang 2 ;
作者机构： 1.Changshu Inst Technol, Sch Biol & Food Engn, 99 South Third Ring Rd, Changshu 215500, Peoples R China
2.Nanjing Agr Univ, Coll Food Sci & Technol, Nanjing 210095, Jiangsu, Peoples R China
3.Shanghai Zhongqiao Vocat & Tech Univ, Coll Food & Drug, 3888 Caolang Rd, Shanghai 201514, Peoples R China
4.Jiangsu Acad Agr Sci, Jiangsu Key Lab Hort Crop Genet Improvement, Inst Pomol, Nanjing 210014, Jiangsu, Peoples R China
关键词： postharvest treatment; aroma volatiles; ethylene biosynthesis; fatty acids; gene expression
期刊名称：ACTA SCIENTIARUM POLONORUM-TECHNOLOGIA ALIMENTARIA （ 影响因子：1.5； 五年影响因子：1.8 ）
ISSN： 1644-0730
年卷期： 2022 年 21 卷 2 期
页码：
收录情况： SCI
摘要： Background. Nitric oxide (NO) is an important signaling molecule which could regulate different aspects of fruit ripening and senescence. However, the effects of NO treatment on the aroma volatiles of postharvest peaches is rarely reported. Materials and methods. In the present study, 'Xiahui 6' peaches were fumigated with 10 mu L.L-1 NO for 3 h, then stored at 20 degrees C for 9 days. Fruit firmness, SSC, TA, ethylene production, the content of fatty acids and aroma volatiles, and related gene expression were evaluated during storage. Results. Nitric oxide significantly maintained higher fruit firmness, SSC and TA at the end of storage, thus maintaining higher fruit quality. The gene expression of PpACSJ/3, PpACO were significantly depressed in NO-treated peaches, which resulted in the reduction of ethylene production. In addition, NO treatment delayed the decline of C6 volatiles, inhibited the formation of esters and lactones supported by a lower expression level of PpLOX3/4, PpAAT1/2, PpACX1/2/3/4, PpFAD1/3 and a higher transcript abundance of PpLOX2, PpHPL1, PpADH1. Additionally, the content of PA, SA, OA, LA and LeA reduced in response to NO treatment during the second half of storage, accompanied by a lower mRNA level in PpFAD1/2/3. Conclusions. The effects of NO on peach aroma volatiles during storage were novel among the study of NO in peaches. In this study, NO maintained higher fruit quality, delayed the ripening and senescence of peach fruit after harvest. For aroma volatiles, NO maintained higher levels of C6 volatiles and reduced the content of esters and lactones in peaches, as well as the content of PA, SA, OA and LeA. These results together suggest that the effects of NO on peach aroma volatiles are a result of the regulation of genes related with the biosynthesis of aroma compounds, ethylene and fatty acids.
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