Molecular evidence to the day length in regulating the short shoot phenomenon during summer in roses (Rosa sp.)
Molecular evidence to the day length in regulating the short shoot phenomenon during summer in roses (Rosa sp.)
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DOI：
10.1080/17429145.2021.2018512
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发表时间：
2022-01
影响因子：
3.2
通讯作者：
Li Wang;Wanxia Jiang;Wuhua Zhang;Weitong Chen;Yu Mo;Tong Zhou;Jinzhu Zhang;D. Che
中科院分区：
文献类型：
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作者：
Li Wang;Wanxia Jiang;Wuhua Zhang;Weitong Chen;Yu Mo;Tong Zhou;Jinzhu Zhang;D. Che
摘要短枝现象是决定月季经济价值的重要表型之一，节数直接影响月季新梢长度。为了阐明日长影响新梢长度的分子机制，研究了8、10和12h日长对节数的影响。8h组和12h组之间的节点数有显著差异。12h处理组比8h和10h处理组的结节发育明显提前，第3天结节数最多。通过RNA-seq分析，我们发现了调控芽长度的候选基因，这些基因参与了脱落酸合成途径和生长素信号转导与合成途径。此外，枝尖脱落酸含量随着日照时间的增加而减少，生长素含量随着日照时间的延长而增加。
ABSTRACT The short shoot phenomenon is an important phenotype underlying the economic value of roses – node number can directly affect shoot length. To elucidate the molecular mechanism of how day length affects shoot length, the effect of 8, 10, and 12 h day lengths on node number were studied. The number of nodes between the 8 and 12 h treatment groups significantly differed. Node development in the 12 h treatment group occurred significantly earlier than that in the 8 and 10 h treatment groups and the number of nodes reached a maximum on the third day. Using RNA-seq analysis, we identified candidate genes that regulated shoot length; these were involved in the abscisic acid synthesis pathway and auxin signal transduction and synthesis pathways. Furthermore, the abscisic acid content in the shoot tip decreased with an increasing day length, while the auxin content increased with day length.