Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan.
Plant Signal Behav. 2012 Jan;7(1):50-2. doi: 10.4161/psb.7.1.18533.
The rice peter pan syndrome-1 (pps-1) mutant shows a prolonged juvenile phase and early flowering. Although the early vegetative phase and flowering time of pps-1 have been closely examined, the phenotypes in the late vegetative and reproductive phases are not yet well understood. In the ninth leaf blade of pps-1, the relative length of the midrib was comparable to the sixth leaf blade of wild-type. Moreover, pps-1 had a small inflorescence meristem and small panicles. These phenotypes indicate that in pps-1 the juvenile phase coexists with the late vegetative phase, resulting in small panicles. Gibberellin is known to promote the juvenile-adult phase transition. d18-k is dwarf and has a prolonged juvenile phase. Double mutant (d18-k pps-1) showed the same phenotype as the pps-1, indicating that PPS is upstream of GA biosynthetic genes.
水稻彼得潘综合征-1（pps-1）突变体表现出延长的幼年期和早期开花。尽管已经对 pps-1 的早期营养生长阶段和开花时间进行了密切研究，但对其营养生长后期和生殖阶段的表型还不是很清楚。在 pps-1 的第九叶片中，中脉的相对长度与野生型第六叶片相当。此外，pps-1 的花序分生组织小，花序小。这些表型表明，在 pps-1 中，幼年期与营养生长后期共存，导致小的花序。赤霉素已知可促进幼年期到成年期的转变。d18-k 是矮化的，具有延长的幼年期。双突变体（d18-k pps-1）表现出与 pps-1 相同的表型，表明 PPS 在 GA 生物合成基因的上游。
