摘要: Although it has been reported previously that ethylene plays a critical role in sex determination in cucurbit species, how the andromonoecy that carries both the male and hermaphroditic flowers is determined in watermelon is still unknown. Here we showed that the watermelon gene 1-aminocyclopropane-1-carboxylate synthase 4 (CitACS4), expressed specifically in carpel primordia, determines the andromonoecy in watermelon. Among four single nucleotide polymorphism (SNPs) and one InDel identified in the coding region of CitACS4, the C364W mutation located in the conserved box 6 was co-segregated with andromonoecy. Enzymatic analyses showed that the C364W mutation caused a reduced activity in CitACS4. We believe that the reduced CitACS4 activity may hamper the programmed cell death in stamen primordia, leading to the formation of hermaphroditic flowers.
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期刊:
JIPB
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分类:
生物学
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植物学
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植物生物化学、植物生物物理学
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引用:
ChinaXiv:201605.00415
(或此版本
ChinaXiv:201605.00415V1)
DOI:10.12074/201605.00415V1
CSTR:32003.36.ChinaXiv.201605.00415.V1
- 推荐引用方式:
Gaojie Ji,Jie Zhang,Haiying Zhang,Honghe Sun,Guoyi Gong,Jianting Shi,Shouwei Tian,Shaogui Guo,Yi Ren,Huolin Shen,Junping Gao,Yong Xu.(2016).Mutation in the gene encoding 1-aminocyclopropane-1-carboxylate synthase 4 (CitACS4) led to andromonoecy in watermelon.中国科学院科技论文预发布平台.[ChinaXiv:201605.00415]
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