Claim · model-written summary
miR319a overexpression reduced poplar lateral root number and density.
- Treatment
- overexpression of miR319ae0
- Gene
- miR319ae0
- Outcome
- number and density of lateral rootse0
- Direction
- decreasee0
PopulusNot reportedComparator
Verbatim
e0“overexpression of miR319a led to a decrease in the number and density of lateral roots in poplar”
Title
MicroRNA319-TCP19-IAA3.2 Module Mediates Lateral Root Growth in Populus tomentosa
Jianqiu Li; Hanyu Chen; Zhengjie Zhao; et al. Plants 2025. doi:10.3390/plants14162494
Other claims from this paper (17)
- Intervention effect miR319a repression promoted lateral root development.
- Observation IAA3.1 and IAA3.2 were upregulated in miR319a-OE plants.
- Observation IAA3.1 and IAA3.2 were downregulated in miR319a-STTM plants.
- Intervention effect NAA increased wild-type lateral root number by 30%.
- Intervention effect NAA increased wild-type lateral root density by 44%.
- Intervention effect NAA increased lateral root number in miR319a-OE plants by 23% and 48%.
- Intervention effect NAA increased lateral root density in miR319a-OE plants by 10% and 26%.
- Intervention effect NPA decreased wild-type lateral root number by 70%.
- Intervention effect NPA decreased lateral root number in overexpression plants by 85–87%.
- Intervention effect NPA decreased lateral root number in STTM plants by about 83%.
- Mechanism miR319a significantly inhibited IAA3.1 and IAA3.2 expression.
- Observation Auxin signaling was stronger in epidermal and elongation-zone cells of miR319a-OE lateral roots.
- Observation Auxin signaling was more pronounced in root tip meristematic cells of WT and miR319a-STTM roots.
- Observation IAA3.2 was identified as a downstream target of TCP19.
- Observation TCP19 directly bound the IAA3.2 promoter.
- Mechanism miR319a targeted and cleaved TCP19.
- Mechanism TCP19 directly and negatively regulated IAA3.2 expression and lateral root development.