Regulation of stem cell identity in a moss meristem with a single stem cell

演題

Regulation of stem cell identity in a moss meristem with a single stem cell

講演者

Dr. Yuki Hata (Wageningen University)

使用言語

English

日時

2026年9月9日(水曜日) 15：00～15：50

場所

L13

内容

Plant growth is sustained by the activity of meristems at the tips of the plant body. However, meristem organization differs markedly among plant lineages. While seed plant meristems contain multiple stem cells, bryophytes and ferns possess a single stem cell, called the apical cell. How apical cell identity is specified remains largely unknown. In this study, I addressed this question using the gametophore shoot apical meristem of the moss Physcomitrium patens in combination with molecular genetics, live-cell imaging, and single- cell RNA sequencing. These approaches identified apical-cell-specific gene expression and hormonal signaling that determine apical cell identity. Some of the regulatory factors are conserved with those controlling stem cell in seed plants, suggesting that the diversity of stem cell organization evolved through modifications of conserved regulatory networks together with the acquisition of lineage-specific factors.

問合せ先

Plant Regeneration and Morphogenesis
Ikeuchi Momoko (momoko.ikeuchi@bs.naist.jp)