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Engineering Plant Growth and Development on Nanotopographical Cues
( Mahpara Safdar ),( Sunhopark ),( Woochankim ),( Yonghyungwon ),( Janghokim ) 한국농업기계학회 2022 한국농업기계학회 학술발표논문집 Vol.27 No.2
Seed germination and root development are important indicators of plant development. Here, we propose a new nanotechnology to guide plant growth and development. We developed polymer-based soil model platforms with various nanotopographical features to explore the influence of guiding topographical cues on plant development including phenotypic aspects and gene regulation. The fabricated nanotextured surfaces showed the good mechanical stability, biocompatibility, strong adhesion, non-toxicity as well as super hydrophobicity. Our new Arabidopsis root system had the abundant molecular genetic resources according to the unique nano-structure designs, controlling the plant growth, which can be used as a new platform for investing the phenotype and gene networks. Finally, we showed some examples that our nanotopographical platforms could promote the plant growth and development by providing specific roadmap and transport genes responsible.
( Mahpara Safdar ),( Sunho Park ),( Woochan Kim ),( Yonghyun Gwon ),( Yeon-ok Kim ),( Jangho Kim ) 한국농업기계학회 2023 한국농업기계학회 학술발표논문집 Vol.28 No.2
Seed germination and root development serve as crucial indicators of plant growth and development. Here, we introduce a set of artificial multiscale topographical patterns based on polydimethylsiloxane (PDMS) comprising uniformly spaced ridge/groove structures for plant root growth and development. PDMS-based multiscale patterns were prepared to mimic the native plant cell wall’s aligned micro-nanofiber structure and its relative hydrophobicity. The width of the ridge and groove in these multiscale patterns range from 400 nm to 5 μm, categorized into two groups: dense (400-800 nm) and sparse (5 μm). Importantly, Arabidopsis cultured on these matrices exhibited a remarkable bidirectional trend, with maximum root growth and thickness observed at sparse feature density, whereas the maximum anisotropic root alignment toward gravity observed at the dense case, exhibiting a monotonic decrease as feature size increases. The ultra-tiny multiscale patterns design can serve as a novel platform for investigating phenotypes and gene networks, providing ample molecular genetic resources for controlling plant root growth and development. Together, our study provides pioneering evidence of biomimetic topographical cues with substantial potential to manipulate and enhance plant root development through micro-/nanoarchitecture interactions dependent on feature size, presenting a significant advancement in understanding root developmental pathways.