Shedding light on flower development: phytochrome B regulates gynoecium formation in association with the transcription factor SPATULA.
作者： Julia Foreman , James White , Ian Graham , Karen Halliday , Eve-Marie Josse
关键词: Cell biology 、 Transcription factor 、 Biology 、 Auxin 、 Arabidopsis 、 Botany 、 Pollen 、 Gynoecium 、 Phenotype 、 Pollen tube 、 Ovule
摘要: Accurate development of the gynoecium, female reproductive organ, is necessary to achieve efficient fertilization. In Arabidopsis, correct patterning apical-basal axis gynoecium requires establishment a morphogenic gradient auxin. This allows production specialized tissues, whose roles consist attracting pollen, allowing pollen tube growth and protecting ovules within ovaries. Mutations in bHLH transcription factor SPATULA (SPT) are known impair apical tissues gynoecium. Here, we show that spt phenotype rescued by removal phytochrome B, discuss how light signaling may control flower development.
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