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YABBY gene SHATTERING1 controls activation rather than patterning of the abscission zone in Setaria viridis: Study

September 29th, 2023
YABBY gene SHATTERING1 controls activation rather than patterning of the abscission zone in Setaria viridis: Study
Experimental conditions for phenotyping experiments. Experimental conditions for both experiments were conducted. A) Experiment with control and drought treatments. Both were grown at 22°C during the days and 18°C during the nights, with the drought-treated plants receiving 20% of control watering starting on day 5 on the phenotyping platform. B) Experiment with heat and a combination of heat and drought treatments. Both were grown at 35°C during the day and 30°C during the night, with heat and drought combination treated plants receiving 20% of control watering starting on day 5 on the phenotyping platform (heat treatment began on the same day). All plants were grown under a 14 h photoperiod. Credit: New Phytologist (2023). DOI: 10.1111/nph.19157

Plants have highly evolved mechanisms to shed or drop organs (abscission) in response to environmental or developmental cues. It's why you have to rake leaves in the Fall.

But in agriculture, the natural shedding of flowers or seeds is detrimental, and cereal crops with abscission-inhibiting mutations in certain genes, like SHATTERING1, have been bred to dramatically increase yield.

Using Crispr gene editing and detailed analyzes, Yu et al. show for the first time some mechanistic features of abscission in the grasses, including the role of the plant hormone auxin.

The study is published in the journal New Phytologist.

More information:
Yunqing Yu et al, The YABBY gene SHATTERING1 controls activation rather than patterning of the abscission zone in Setaria viridis, New Phytologist (2023). DOI: 10.1111/nph.19157

Provided by Donald Danforth Plant Science Center

Citation: YABBY gene SHATTERING1 controls activation rather than patterning of the abscission zone in Setaria viridis: Study (2023, September 29) retrieved 4 May 2024 from https://sciencex.com/wire-news/457452846/yabby-gene-shattering1-controls-activation-rather-than-patternin.html
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