Nitric Oxide Pre-Treatment Advances Bulblet Dormancy Release by Mediating Metabolic Changes in Lilium
文献类型： 外文期刊
作者： Yang, Chenglong 1 ; Xu, Xiaoping 1 ; Ali, Muhammad Moaaz 2 ; He, Xing 1 ; Guo, Wenjie 1 ; Chen, Faxing 3 ; Fang, Shaozhong 1 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Biotechnol, Fuzhou 350003, Peoples R China
2.Hainan Univ, Sch Trop Agr & Forestry, Danzhou 571700, Peoples R China
3.Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China
关键词：
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.7 ）
ISSN： 1661-6596
年卷期： 2025 年 26 卷 1 期
页码：
收录情况： SCI
摘要： The lily is a globally popular cut flower, and managing dormancy in lily bulblets is essential for continuous, year-round production. While nitric oxide (NO) has been shown to influence seed dormancy and germination, its role in dormancy release in lilies was previously unconfirmed. In this study, we investigated the effects of NO on dormancy release in lily bulblets using SNP and c-PTIO. Results showed that SNP treatment promoted dormancy release, while c-PTIO inhibited it. Measurement of endogenous NO levels in the bulbs, along with enzyme activities of NOS-like and NR and gene expression levels of LoNOS-IP and LoNR, confirmed that NO plays a role in promoting dormancy release in lilies. To further elucidate the physiological mechanisms involved, we analyzed H2O2 levels, antioxidant enzyme activities, endogenous hormone levels, and carbohydrate metabolism in the bulbs. Findings demonstrated that NO facilitated dormancy release by increasing H2O2, gibberellins (GAs), indole-3-acetic acid (IAA), zeatin riboside (ZR), reducing sugars, and by accelerating the metabolism of abscisic acid (ABA) and starch. This study provides a foundation for deeper investigation into the mechanisms underlying dormancy release in lily bulbs.
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