Post-fertilization expression of FLOWERING LOCUS T suppresses reproductive reversion.
Post-fertilization expression of FLOWERING LOCUS T suppresses reproductive reversion.
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DOI：
10.3389/fpls.2014.00164
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发表时间：
2014
影响因子：
5.6
通讯作者：
Turck FK
中科院分区：
文献类型：
--
作者：
Liu L;Farrona S;Klemme S;Turck FK
花位点T（FT）编码一个系统信号，将长日照光周期的感知从叶片传递到茎尖，以诱导成花转变。FT在莲座叶的韧皮部伴随细胞中的瞬时表达持续一到几天，先前被证明足以使植物开花。在这里，我们表明，部分承诺的结果在多效性花序分生组织逆转表型。FT在花转变后形成的器官中表达更强，如茎生叶、萼片和发育中的角果。我们表明，表达FT和它的parastricTwin姐妹FT（TSF）花的过渡后起着作用，花序分生组织的稳定，即使植物花很晚的发展。CONSTANS（CO）是FT的主要激活剂，不需要防止晚期生殖逆转。FT的要求是暂时的，因为生殖恢复到营养状态只发生在最近形成的花序分生组织。与叶中FT的表达不同，在发育中的长角果中，FT表达既不需要远端推定的FT增强子，也不需要长日照。FT在发育中的角果及其支持茎中的表达足以在敏感的发育窗口期间稳定开花，表明果实产生的FT参与花序稳定。
FLOWERING LOCUS T (FT) encodes a systemic signal communicating the perception of long day photoperiod from leaves to the shoot apex to induce the floral transition. Transient expression of FT in the phloem companion cells of rosette leaves for one to several days was previously shown to be sufficient to commit plants to flowering. Here we show that partial commitment results in pleiotropic inflorescence meristem reversion phenotypes. FT expression is much stronger in organs formed after the floral transition such as cauline leaves, sepals, and developing siliques. We show that expression of FT and its paralog TWIN SISTER OF FT (TSF) after the floral transition plays a role in inflorescence meristem stabilization even if plants flower very late in development. CONSTANS (CO), the major activator of FT, is not required to prevent late reproductive reversion. The requirement for FT is temporal since reproductive reversion to a vegetative state occurs only in recently formed inflorescence meristems. Unlike for the expression of FT in leaves, neither the distal putative FT enhancer nor long-day photoperiod is required for FT expression in developing siliques. Expression of FT in developing siliques and their supporting stems is sufficient to stabilize flowering during the sensitive developmental window indicating that fruit generated FT participates in inflorescence stabilization.
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影响因子：
2.6
作者：
Goldschmidt, Eliezer E.
通讯作者：
Goldschmidt, Eliezer E.
影响因子：
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