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Journal of Experimental Botany
@jxbotany.bsky.social
Founded in 1950, the Journal of Experimental Botany (JXB) is a top-ranking journal owned by the Society for Experimental Biology (SEB) and dedicated to publishing advances in plant science. academic.oup.com/jxb j.exp.bot@lancaster.ac.uk
832 followers619 following134 posts
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ABI5, crucial for ABA signalling in seed germination, is negatively regulated by RACK1, which aids ABI5 degradation and suppresses its activity. #PlantSciencedoi.org/10.1093/jxb/...

Working model for RACK1-mediated regulation of seed germination and the early stages of plant development. In the mature seeds where ABA is highly accumulated, ABI5 is induced and then phosphorylated by SnRK2 kinases to activate downstream signalling to active downstream genes including EM1 and EM6, and to repress RACK1; in the germinating seeds and seedlings where ABA rapidly decreases, RACK1 is induced through an unknown mechanism; increasing RACK1 can interact with phosphorylated ABI5 to reduce transcriptional activity of ABI5. In addition, RACK1 can also interact with DWA1/2, leading to degradation of ABI5 and consequently promotion of seed germination and seedling growth.
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JO
Journal of Experimental Botany
@jxbotany.bsky.social
Founded in 1950, the Journal of Experimental Botany (JXB) is a top-ranking journal owned by the Society for Experimental Biology (SEB) and dedicated to publishing advances in plant science. academic.oup.com/jxb j.exp.bot@lancaster.ac.uk
832 followers619 following134 posts
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