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CRISPR Unlocks Secret to Seed Dormancy
Wednesday, 2024/11/20 | 07:54:35

Seed dormancy is a significant adaptation that allows seeds to survive harsh conditions and germinate only when the environment is favorable. Myosin-binding proteins (MyoBs) play a vital role in this process by facilitating the movement of cellular components within the seed.

 

A study published in The Plant Journal focused on Arabidopsis MyoB13, a protein highly expressed in mature, dry seeds. By using CRISPR-Cas9 gene editing, they created a myob13 mutant that exhibited premature sprouting (vivipary). This suggests that MyoB13 is essential for maintaining seed dormancy.

 

Further investigations revealed that MyoB13 negatively regulates the ABA (abscisic acid) biosynthesis and signaling pathways. ABA is a plant hormone known to promote seed dormancy. Interestingly, expressing MyoB13 orthologs from maize and soybean in the Arabidopsis myob13 mutant could fully restore the wild-type phenotype. This indicates that the role of MyoB13 in ABA-induced seed dormancy is conserved across different plant species.

 

By understanding the function of MyoB13, researchers can develop strategies to control seed dormancy and improve crop yields, especially in challenging environmental conditions.

Read more from The Plant Journal.

 

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