Department of Experimental Biology of Plants, Faculty of Science, Charles University, 128 44 Prague, Czech Republic.
Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Colonia Chamilpa, Cuernavaca, Morelos 62210, Mexico.
Int J Mol Sci. 2020 Mar 10;21(5):1886. doi: 10.3390/ijms21051886.
The Localized () gene family encodes embryophyte-specific nuclear proteins with DNA binding activity. They modulate gene expression and affect various developmental processes in plants. We identify (At3G60870) as a developmental modulator of root system architecture and growth. is involved in regulation of the length of the proliferation domain and number of dividing cells in the root apical meristem and thereby, cell production. Both primary root growth and lateral root development respond according to transcription level. The knock-out plants show reduced root systems due to a shorter primary root and a lower number of lateral roots. This change results from a higher number of arrested and non-developing lateral root primordia (LRP) rather than from a decreased LRP initiation. The over-expression of results in a more extensive root system, longer primary roots, and increased density of lateral root initiation events. is thus involved in the formation of lateral roots at both LRP initiation and their later development. We conclude that participates in modulation of root system architecture through regulation of root apical meristem activity, lateral root initiation and emergence; these correspond well with expression pattern of .
本地化（）基因家族编码具有 DNA 结合活性的胚胎植物特异性核蛋白。它们调节基因表达，影响植物的各种发育过程。我们确定（At3G60870）是根系结构和生长的发育调节剂。参与调节根顶端分生组织的增殖域长度和分裂细胞数量，从而影响细胞产生。主根生长和侧根发育都根据转录水平做出响应。由于主根变短和侧根数量减少，敲除植株的根系减少。这种变化是由于停滞和未发育的侧根原基（LRP）数量增加，而不是 LRP 起始减少所致。过表达导致更广泛的根系，更长的主根和增加的侧根起始事件密度。因此，参与通过调节根顶端分生组织活性、侧根起始和出现来形成侧根；这与的表达模式非常吻合。
