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Chlorate-induced molecular floral transition revealed by transcriptomes

文献类型： 外文期刊

作者： Li, Songgang 1 ; Chen, Houbin 2 ; Hong, Jiwang 1 ; Ye, Xiuxu 1 ; Wang, Jiabao 1 ; Chen, Yeyuan 1 ; Zhang, Lei 1 ; Su, Zuanxian 2 ; Yang, Ziqin 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Haikou 571101, Hainan, Peoples R China

2.South China Agr Univ, Coll Hort, Guangzhou 510642, Guangdong, Peoples R China

关键词： Dimocarpus longan; transcriptome; KClO3; flowering

期刊名称：OPEN LIFE SCIENCES （ 影响因子：2.2； 五年影响因子：1.9 ）

ISSN： 2391-5412

年卷期： 2023 年 18 卷 1 期

页码：

收录情况： SCI

摘要： Flowering in off-season longan (Dimocarpus longan L.) can be induced effectively by the application of potassium chlorate (KClO3), but the mechanism of the physiological induction is largely unknown to decipher its mechanism and identify genes potentially regulating the process, and comparative analysis via RNA-Seq was performed between vegetative and KClO3-induced floral buds. A total of 18,649 differentially expressed genes (DEGs) were identified between control and treated samples. Gene ontology and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed that DEGs related to plant hormone signal transduction, mitogen-activated protein kinase (MAPK) signaling pathway, starch and sucrose metabolism, and phenylpropanoid biosynthesis were enriched in our data. A total of 29 flowering-related DEGs were identified in our study, such as APETALA1 (AP1), APETALA2 (AP2), AUXIN RESPONSE FACTOR 3/ETTIN (ARF3), SQUAMOSA PROMOTER BINDING PROTEIN-LIKE 8 (SPL8), AGAMOUS (AG), and others. The upregulation of AP2 and SPL genes indicates that the age-related pathway is activated and influences the floral induction in KClO3-induced longan floral buds by coordinated regulation of genes related to AP1, AG, and ARF3. This study provides a valuable resource for studying molecular mechanisms underlying chlorate-induced floral transition in off-season longan, which may benefit the development and production of off-season tropical/subtropical fruit trees.

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