文献类型： 外文期刊
作者： Liu, Min 1 ; Yang, Ruijuan 1 ; Chen, Gang 3 ; Li, Weiqian 3 ; Liu, Yitong 3 ; Chang, Chengwei 1 ; Wang, Yamei 1 ; Ma, Dongmei 4 ; Wang, Honglun 5 ; Cai, Jinjun 3 ; Fu, Chunxiang 1 ;
作者机构： 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Shandong Prov Key Lab Energy Genet, Qingdao 266101, Peoples R China
2.Shandong Energy Inst, Qingdao 266101, Peoples R China
3.Ningxia Acad Agr & Forestry Sci, Inst Agr Resources & Environm, Yinchuan 750002, Peoples R China
4.Ningxia Univ, Breeding Base State Key Lab Land Degradat & Ecol R, Yinchuan 750021, Peoples R China
5.Chinese Acad Sci, Northwest Inst Plateau Biol, CAS Key Lab Tibetan Med Res, Xining 810008, Peoples R China
关键词： Apricot; Flowering time; Frost damage; Transcriptome; Transcription factor
期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：6.2； 五年影响因子：6.2 ）
ISSN： 0926-6690
年卷期： 2024 年 222 卷
页码：
收录情况： SCI
摘要： Apricot blossoms and seed kernels are valuable medicine and biodiesel feedstock, respectively. Frequent frosts in early spring often result in reduction or complete loss of apricot blossoms, fruits and seeds. Therefore, breeding late flowering varieties of the apricot is one of the important strategies to avoid frost damage. However, the mechanism regulating flowering time remains largely unknown in this species. Here, the transcriptomes of the apricot cultivars Weixuan No.1 (Prunus armeniaca L., late flowering) and Shanxing (Prunus sibirica L., early flowering) were analyzed to identify the genes regulating flowering time. The pairwise comparison identified 4900 genes with differential expression between cultivars. From these, 36 genes were identified related to apricot flowering time, including FLOWERING LOCUS T (PaFT, PARG03266), FOLLOWER LOCUS D (PaFD, PARG27379), and PROTEIN ARGININE METHYLTRANSFERASE 10 (PaPAMT10, PARG28000), their ectopic expression in Arabidopsis promoted early flowering. Additionally, one MADS-box transcription factor family member, PaAGL15-like (PARG25423), was retrieved from the differentially expressed transcription factors between Shanxing and Weixuan No.1. Subsequent experiments showed that the ectopic expression of PaAGL15-like in Arabidopsis promoted early flowering. In these transgenic plants, eight genes, including AtFT and miR156targeted AtSPL3, were significantly enriched during the transition from the vegetative to the reproductive phase. Yeast one-hybrid and transient dual luciferase assays further showed that PaAGL15-like activated AtFT but repressed AtmiR156b by directly binding to their promoter sequences. Finally, our study proposes four genes PaFT, PaFD, PaPAMT10, and PaAGL15-like as potential targets for fine-tuning flowering time to improve apricot blooms and seed kernel yield.
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