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首页> 外文期刊>Journal of Experimental Botany >Long-distance regulation of flowering time
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Long-distance regulation of flowering time

机译：远距离调节开花时间

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One of the great mysteries of plant science appears to have been resolved with the discovery that the protein FT can act as a phloem-mobile florigen hormone. The collective evidence from several laboratories, many from studies on photoperiod response, indicates that FT and its homologues are universal signalling molecules for flowering plants. Duplication and divergence of FT-like proteins reveals an increased complexity of function in certain taxonomic groups including grasses and legumes. There are additional components of long-distance flowering time control, such as a role for gibberellins in some species but probably not others. Cytokinins and sugars are further putative signals. Vernalization processes and responses are generally considered to occur in shoot meristems, but systemic responses to cold have been reported several times. Finally, there is increasing evidence that FT does not act purely to switch on flowering, but in addition, has broader roles in seasonal developmental switches such as bud dormancy and tuberization, and in the regulation of meristem determinacy and compound leaf development. This review seeks to highlight recent progress in systemic floral signalling, and to indicate areas in need of further research.
机译：发现蛋白质FT可以作为韧皮部移动的荧光原激素的作用，似乎已经解决了植物科学的一大谜团。几个实验室的集体证据，其中许多来自光周期反应研究，表明FT及其同源物是开花植物的通用信号分子。 FT样蛋白的重复和发散显示某些分类组（包括草和豆类）中功能的复杂性增加。远距离开花时间控制还有其他组成部分，例如赤霉素在某些物种中可能起作用，而在其他物种中则可能没有。细胞分裂素和糖是进一步的推测信号。春化过程和响应通常被认为是发生在分生组织中，但是对寒冷的系统性响应已有数次报道。最后，越来越多的证据表明，FT并不仅仅起到切换开花的作用，而且在诸如芽休眠和块茎化的季节性发育转换以及分生组织确定性和复合叶片发育的调控中具有更广泛的作用。这篇综述旨在强调系统性花卉信号传导的最新进展，并指出需要进一步研究的领域。

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