Abstract：SQUAMOSA promoter-binding protein like (SPL) gene family plays an important role in growth and development of embryos, buds, leaves, flowers, fruits and other organs in plants. The members of the SPL gene family in peach were identified and their expression characteristics in different tissues and fruit development processes were analyzed in this study. The results showed that 25 PrupeSPL gene family members were identified from the peach genome. Except that PrupeSPL16 lacked the Zn-2 structure, all other PrupeSPL genes contain an SBP conserved domain, two zinc finger structures and a nuclear localization signal. Most members of the SPL gene family were expressed in different tissues, and most members had higher expression in young fruit. With the fruit growth and development, the expression level of PrupeSPL1, 3, 4, 7, 8, 10, 13, 14, 16~21, 24, 25 significantly decreased, revealing that these members might be involved in the regulation of peach young fruit. During the fruit ripening and softening, the expression of PrupeSPL1~4, 7, 8, 10, 16, 17, 19, 21 showed a significant up-regulation trend, indicating that these members might be related to peach fruit ripening, softening and senescence. In this study, the PrupeSPL gene family was systematically analyzed in peach, and the PrupeSPL members that might be involved in regulating the growth, ripening and softening process of peach fruit were screened. This study provides basic data for further elucidating the function of SPL gene during peach fruit development.
汪先菊, 张绍宇, 徐泽, 石佩, 康同洋, 李琴, 赵彩平. 桃SPL基因家族成员鉴定及其基因表达与果实发育的相关性分析[J]. 农业生物技术学报, 2020, 28(9): 1521-1534.
WANG Xian-Ju, ZHANG Shao-Yu, XU Ze, SHI Pei, KANG Tong-Yang, LI Qin, ZHAO Cai-Ping. Identification of SPL Gene Family Members and Correlation Analysis Between Gene Expression and Fruit Development in Peach (Prunus persica). 农业生物技术学报, 2020, 28(9): 1521-1534.
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