Grafting induces flowering time and tuber formation changes in Brassica species involving FT signalling

doi:10.1111/plb.13024

	Grafting induces flowering time and tuber formation changes in Brassica species involving FT signalling
	Zheng, Y.1,2 ; Luo, L.3; Gao, Z.1,2; Liu, Y.1 ; Chen, Q.1; Kong, X.1; Yang, Y.1
通讯作者	Kong, X.(kongxiangxiang@mail.kib.ac.cn) ; Yang, Y.(yangyp@mail.kib.ac.cn)
	2019-07-17
发表期刊	PLANT BIOLOGY
ISSN	1435-8603
页码	8
摘要	Brassica species are widely cultivated and important biennial and annual crops. The transition from vegetative to reproductive development in Brassica species is critical in agriculture and horticulture. Grafting is a useful tool for improving agricultural production and investigating the movement of long-range signals. Here we established a hypocotyl micrografting system in B. rapa crops and successfully grafted the rootstock of turnip onto many different scion genotypes. Grafting with turnip rootstock prolonged vegetative growth, delayed flowering and improved seed yield in rapeseed. The late-flowering turnip rootstock could delay flowering of the scion of the early-flowering turnip accession. The BrrFLC1 (FLOWERING LOCUS C1 in B. rapa) transcript levels and H3K4me3 levels at the BrrFLC1 locus were up-regulated and subsequently suppressed the downstream FT (FLOWERING LOCUS T) signals in leaves of the scion to delay flowering. Vernalization treatment can efficiently promote flowering time in turnip. The non-vernalised turnip flowered early after grafting onto the rootstock of the vernalised turnip, which was accompanied by high levels of FT homologue expression in leaves of the scion. Hypocotyl excision experiments revealed that the process of tuber formation was suppressed by removing the hypocotyl tissue, which in turn repressed the expression of tuberization-related genes. Our findings suggest that the rootstock generates mobile signals that are transported from the rootstock to the scion to fine-tune FT signalling and modulate flowering time.
关键词	Brassica species flowering time grafting tuberisation vernalisation
DOI	10.1111/plb.13024
收录类别	SCI
语种	英语
WOS记录号	WOS:000476395300001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/68157
专题	中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者	Kong, X.; Yang, Y.
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Yunnan Univ, Sch Ecol & Environm Sci, Kunming, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Y.,Luo, L.,Gao, Z.,et al. Grafting induces flowering time and tuber formation changes in Brassica species involving FT signalling[J]. PLANT BIOLOGY,2019:8.
APA	Zheng, Y..,Luo, L..,Gao, Z..,Liu, Y..,Chen, Q..,...&Yang, Y..(2019).Grafting induces flowering time and tuber formation changes in Brassica species involving FT signalling.PLANT BIOLOGY,8.
MLA	Zheng, Y.,et al."Grafting induces flowering time and tuber formation changes in Brassica species involving FT signalling".PLANT BIOLOGY (2019):8.

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