Fitness consequences of altering floral circadian oscillations for Nicotiana attenuata.
Fitness consequences of altering floral circadian oscillations for Nicotiana attenuata.
复制标题
DOI：
10.1111/jipb.12511
复制
发表时间：
2017-03
影响因子：
11.4
通讯作者：
Felipe Yon;D. Kessler;Youngsung Joo;Lucas Cortés Llorca;Sang-Gyu Kim;I. Baldwin
中科院分区：
文献类型：
--
作者：
Felipe Yon;D. Kessler;Youngsung Joo;Lucas Cortés Llorca;Sang-Gyu Kim;I. Baldwin
花和传粉者之间的生态相互作用都与时间有关。花的开放/关闭和气味的释放在很大程度上与传粉者的活动同步，并且有一个生物钟调节这些节奏。然而，生物钟是否通过调节这些花的节律来增加植物的繁殖成功仍未得到检验。野烟草是一种野生烟草，其花朵昼夜有节奏地开放，散发气味，垂直穿过140°弧线与夜行天蛾互动。我们系花来评估花位对六叶树授粉的重要性；花位对授粉有显著的影响。我们检测了在生物钟基因NaZTL、NaLHY和NaTOC1中沉默的相移花的授粉成功。渐弱花的昼夜节律是异交花粉结实改变的原因。
Ecological interactions between flowers and pollinators are all about timing. Flower opening/closing and scent emissions are largely synchronized with pollinator activity, and a circadian clock regulates these rhythms. However, whether the circadian clock increases a plant's reproductive success by regulating these floral rhythms remains untested. Flowers of Nicotiana attenuata, a wild tobacco, diurnally and rhythmically open, emit scent and move vertically through a 140° arc to interact with nocturnal hawkmoths. We tethered flowers to evaluate the importance of flower positions for Manduca sexta-mediated pollinations; flower position dramatically influenced pollination. We examined the pollination success of phase-shifted flowers, silenced in circadian clock genes, NaZTL, NaLHY, and NaTOC1, by RNAi. Circadian rhythms in N. attenuata flowers are responsible for altered seed set from outcrossed pollen.