Loss of Ribosomal Protein L24A (RPL24A) suppresses proline accumulation of Arabidopsis thaliana ring zinc finger 1 (atrzf1) mutant in response to osmotic stress

2017 ◽  
Vol 494 (3-4) ◽  
pp. 499-503 ◽  
Author(s):  
Seung-Hyeon Park ◽  
Moon-Soo Chung ◽  
Sungbeom Lee ◽  
Kyeong-Hwan Lee ◽  
Cheol Soo Kim
2011 ◽  
Vol 62 (10) ◽  
pp. 3647-3657 ◽  
Author(s):  
Yongshun Gao ◽  
Hitoshi Nishikawa ◽  
Adebanjo Ayobamidele Badejo ◽  
Hitoshi Shibata ◽  
Yoshihiro Sawa ◽  
...  

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yan Xue ◽  
Zhenhui Zhong ◽  
C. Jake Harris ◽  
Javier Gallego-Bartolomé ◽  
Ming Wang ◽  
...  

AbstractThe Microrchidia (MORC) family of ATPases are required for transposable element (TE) silencing and heterochromatin condensation in plants and animals, and C. elegans MORC-1 has been shown to topologically entrap and condense DNA. In Arabidopsis thaliana, mutation of MORCs has been shown to reactivate silent methylated genes and transposons and to decondense heterochromatic chromocenters, despite only minor changes in the maintenance of DNA methylation. Here we provide the first evidence localizing Arabidopsis MORC proteins to specific regions of chromatin and find that MORC4 and MORC7 are closely co-localized with sites of RNA-directed DNA methylation (RdDM). We further show that MORC7, when tethered to DNA by an artificial zinc finger, can facilitate the establishment of RdDM. Finally, we show that MORCs are required for the efficient RdDM mediated establishment of DNA methylation and silencing of a newly integrated FWA transgene, even though morc mutations have no effect on the maintenance of preexisting methylation at the endogenous FWA gene. We propose that MORCs function as a molecular tether in RdDM complexes to reinforce RdDM activity for methylation establishment. These findings have implications for MORC protein function in a variety of other eukaryotic organisms.


2014 ◽  
Vol 86 (3) ◽  
pp. 237-253 ◽  
Author(s):  
Guoliang Han ◽  
Mingjie Wang ◽  
Fang Yuan ◽  
Na Sui ◽  
Jie Song ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document