An RNA exosome subunit mediates cell-to-cell trafficking of a homeobox mRNA via plasmodesmata

Science ◽  
2022 ◽  
Vol 375 (6577) ◽  
pp. 177-182
Author(s):  
Munenori Kitagawa ◽  
Peipei Wu ◽  
Rachappa Balkunde ◽  
Patrick Cunniff ◽  
David Jackson

mRNA migration through plasmodesmata In plants, certain transcription factors are produced in one cell but transported, sometimes as messenger RNA (mRNA), through plasmodesmata, channels between neighboring plant cells, where they act. This system helps to manage stem cell development. Kitagawa et al . now identify part of the machinery that manages this cell-to-cell transport. Transport of the mRNA encoding the KNOTTED1 homeobox transcription factor depends on Ribosomal RNA-Processing Protein 44 (AtRRP44A), which is a subunit of the RNA exosome. —PJH

1993 ◽  
Vol 7 (1) ◽  
pp. 47-53 ◽  
Author(s):  
I W Mattaj ◽  
D Tollervey ◽  
B Séraphin

1989 ◽  
Vol 138 (1) ◽  
pp. 205-207 ◽  
Author(s):  
Susan H. Lawler ◽  
Robert W. Jones ◽  
Brian P. Eliceiri ◽  
George L. Eliceiri

Development ◽  
1991 ◽  
Vol 112 (1) ◽  
pp. 317-326
Author(s):  
M. Caizergues-Ferrer ◽  
C. Mathieu ◽  
P. Mariottini ◽  
F. Amalric ◽  
F. Amaldi

Fibrillarin is one of the protein components that together with U3 snRNA constitute the U3 snRNP, a small nuclear ribonucleoprotein particle involved in ribosomal RNA processing in eucaryotic cells. Using an antifibrillarin antiserum for protein detection and a fibrillarin cDNA and a synthetic oligonucleotide complementary to U3 snRNA as hybridization probes, the expression of these two components has been studied during Xenopus development. Fibrillarin mRNA is accumulated early in oogenesis, like many other messengers, and translated during oocyte growth. Fibrillarin protein is thus progressively accumulated throughout oogenesis to be assembled with U3 snRNA and used for ribosome production in the amplified nucleoli. After fertilization, the amount of U3 snRNA decreases while the maternally accumulated fibrillarin mRNA is maintained and utilized to produce more protein. After the mid-blastula transition, stored fibrillarin is assembled with newly synthesized U3 snRNA and becomes localized in the prenucleolar bodies and reforming nucleoli.


2015 ◽  
Vol 43 (9) ◽  
pp. S78
Author(s):  
Hirotaka Matsui ◽  
Akinori Kanai ◽  
Akiko Nagamachi ◽  
Moe Okuno ◽  
Toshiya Inaba

1995 ◽  
Vol 9 (20) ◽  
pp. 2470-2481 ◽  
Author(s):  
D Lafontaine ◽  
J Vandenhaute ◽  
D Tollervey

2018 ◽  
Vol 218 (3) ◽  
pp. 1233-1246 ◽  
Author(s):  
Hongqiu Wang ◽  
Kai Wang ◽  
Qingguo Du ◽  
Yafei Wang ◽  
Zhiyuan Fu ◽  
...  

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