Abstract
A significant feature of plant cells is the extensive motility of organelles and the cytosol, which was originally defined as cytoplasmic streaming. We suggested previously that a three-way interaction between plant-specific motor proteins myosin XIs, actin filaments, and the endoplasmic reticulum (ER) was responsible for cytoplasmic streaming. (1) Currently, however, there are no reports of molecular components for cytoplasmic streaming other than the actin-myosin-cytoskeleton and ER-related proteins. In the present study, we found that elongated cells of inflorescence stems of Arabidopsis thaliana exhibit vigorous cytoplasmic streaming. Statistical analysis showed that the maximal velocity of plastid movements is 7.26 µm/s, which is much faster than the previously reported velocities of organelles. Surprisingly, the maximal velocity of streaming in the inflorescence stem cells was significantly reduced to 1.11 µm/s in an Arabidopsis mutant, abcb19-101, which lacks ATP BINDING CASSETTE SUBFAMILY B19 (ABCB19) that mediates the polar transport of the phytohormone auxin together with PIN-FORMED (PIN) proteins. Polar auxin transport establishes the auxin concentration gradient essential for plant development and tropisms. Deficien...Continue Reading
References
Feb 5, 1998·Plant Physiology·E B BlancaflorS Gilroy
Jul 22, 1998·The Plant Journal : for Cell and Molecular Biology·H FukakiM Tasaka
Jan 1, 1991·Plant Physiology·M L Evans
Nov 10, 2001·The Plant Cell·B NohE P Spalding
Feb 15, 2002·Nature·Jirí FrimlKlaus Palme
Jun 27, 2003·Nature·Bosl NohAngus S Murphy
Jul 25, 2003·Trends in Plant Science·Gloria K MudayAngus S Murphy
Mar 24, 2004·Current Opinion in Cell Biology·Teruo Shimmen, Etsuo Yokota
Feb 4, 2005·The Plant Cell·Chieko SaitoMasao Tasaka
May 24, 2005·Plant Physiology·Rongcheng Lin, Haiyang Wang
Jan 24, 2007·The Plant Cell·Joshua J BlakesleeAngus S Murphy
Jan 26, 2007·Journal of Plant Research·Teruo Shimmen
Dec 19, 2007·The Plant Journal : for Cell and Molecular Biology·Akitomo NagashimaTatsuya Sakai
Jun 17, 2008·Plant & Cell Physiology·Akitomo NagashimaTatsuya Sakai
Nov 20, 1937·The Journal of General Physiology·K V Thimann, B M Sweeney
Mar 31, 2010·Proceedings of the National Academy of Sciences of the United States of America·Haruko UedaIkuko Hara-Nishimura
Jun 15, 2011·PLoS Biology·John M ChristieAngus S Murphy
Nov 2, 2012·American Journal of Botany·Yasuko HashiguchiMiyo T Morita
Nov 16, 2013·Developmental Cell·Motoki TominagaKohji Ito
Dec 24, 2013·Plant & Cell Physiology·Makoto ShirakawaTomoo Shimada
Jan 16, 2014·Journal of Cell Science·Giovanni StefanoFederica Brandizzi
Aug 15, 2014·Methods in Molecular Biology·Tomoo ShimadaIkuko Hara-Nishimura
Citations
May 7, 2019·Frontiers in Plant Science·Lorenzo BorghiRita de Brito Francisco
Aug 17, 2018·ELife·Min DiaoShanjin Huang
May 21, 2020·Journal of Experimental Botany·Tomas RibbaJosé Antonio O'Brien
Sep 27, 2018·BMC Plant Biology·Sophia BräuningRichard C Macknight
Oct 2, 2020·Plants·Ziling ZhangDawei Xue
Dec 28, 2018·Molecular Plant·Michaela Sylvia MatthesPaula McSteen
May 12, 2021·BMC Genomics·Zhenyang LiaoRay Ming
Sep 28, 2021·Frontiers in Plant Science·Xiaonan DongXianling Ji