Cell growth dynamics in two types of apical meristems in fern gametophytes

• DOI: 10.1111/tpj.15784
• Publication Date: 2022-04-22T04:37:02Z
• Authors: Xiao Wu; An Yan; Xi Yang; Jo Ann Banks; Shaoling Zhang; Yun Zhou
• Keywords: Apical cell; Tip growth

In contrast to seed plants, the gametophytes of seed-free plants develop pluripotent meristems, which promote and sustain their independent growth development. To date, cellular basis meristem development in ferns remains largely unknown. this study, we used Woodsia obtusa, blunt-lobe cliff fern, quantitatively determine cell dynamics two different types apical meristems - initial centered multicellular gametophytes. Through confocal time-lapse live imaging computational image analysis quantification, determined unique patterns division that or terminate initials, dictate transition from initials drive proliferation ferns. Quantitative results showed small cells correlated active fern The marginal undergo both anticlinal periclinal orientations, not only increasing numbers but also playing a dominant role layers during gametophyte All these findings provide insights into function regulation vascular suggesting conserved diversified mechanisms underlying across land plants.