气候变化领域集成服务门户(CCPortal): Local climate and vernalization sensitivity predict the latitudinal patterns of flowering onset in the crop wild relative Linum bienne Mill.

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DOI	10.1093/aob/mcae040
	Local climate and vernalization sensitivity predict the latitudinal patterns of flowering onset in the crop wild relative Linum bienne Mill.
	Landoni, Beatrice; Suarez-Montes, Pilar; Habeahan, Rico H. F.; Brennan, Adrian C.; Perez-Barrales, Rocio
发表日期	2024
ISSN	0305-7364
EISSN	1095-8290
英文摘要	Background and Aims The timing of flowering onset is often correlated with latitude, indicative of climatic gradients. Flowering onset in temperate species commonly requires exposure to cold temperatures, known as vernalization. Hence, population differentiation of flowering onset with latitude might reflect adaptation to the local climatic conditions experienced by populations.Methods Within its western range, seeds from Linum bienne populations (the wild relative of cultivated Linum usitatissimum) were used to describe the latitudinal differentiation of flowering onset to determine its association with the local climate of the population. A vernalization experiment including different crop cultivars was used to determine how vernalization accelerates flowering onset, in addition to the vernalization sensitivity response among populations and cultivars. Additionally, genetic differentiation of L. bienne populations along the latitudinal range was scrutinized using microsatellite markers.Key Results Flowering onset varied with latitude of origin, with southern populations flowering earlier than their northern counterparts. Vernalization reduced the number of days to flowering onset, but vernalization sensitivity was greater in northern populations compared with southern ones. Conversely, vernalization delayed flowering onset in the crop, exhibiting less variation in sensitivity. In L. bienne, both flowering onset and vernalization sensitivity were better predicted by the local climate of the population than by latitude itself. Microsatellite data unveiled genetic differentiation of populations, forming two groups geographically partitioned along latitude.Conclusions The consistent finding of latitudinal variation across experiments suggests that both flowering onset and vernalization sensitivity in L. bienne populations are under genetic regulation and might depend on climatic cues at the place of origin. The association with climatic gradients along latitude suggests that the climate experienced locally drives population differentiation of the flowering onset and vernalization sensitivity patterns. The genetic population structure suggests that past population history could have influenced the flowering initiation patterns detected, which deserves further work.
英文关键词	Climate change; crop wild relative; flax; flowering phenology; latitudinal gradients; local adaptation; genetic differentiation; vernalization
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001198279500001
来源期刊	ANNALS OF BOTANY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304019
作者单位	University of Portsmouth; University of Milan; Durham University; University of Granada
推荐引用方式 GB/T 7714	Landoni, Beatrice,Suarez-Montes, Pilar,Habeahan, Rico H. F.,et al. Local climate and vernalization sensitivity predict the latitudinal patterns of flowering onset in the crop wild relative Linum bienne Mill.[J],2024.
APA	Landoni, Beatrice,Suarez-Montes, Pilar,Habeahan, Rico H. F.,Brennan, Adrian C.,&Perez-Barrales, Rocio.(2024).Local climate and vernalization sensitivity predict the latitudinal patterns of flowering onset in the crop wild relative Linum bienne Mill..ANNALS OF BOTANY.
MLA	Landoni, Beatrice,et al."Local climate and vernalization sensitivity predict the latitudinal patterns of flowering onset in the crop wild relative Linum bienne Mill.".ANNALS OF BOTANY (2024).