Phosphatidylserine Synthase Controls Cell Elongation Especially in the Uppermost Internode in Rice by Regulation of Exocytosis.
Jin Ma,Zhijun Cheng,Jun Chen,Jinbo Shen,Baocai Zhang,Yulong Ren,Yu Ding,Yihua Zhou,Huan Zhang,Kunneng Zhou,Jiulin Wang,Cailin Lei,Xin Zhang,Xiuping Guo,He Gao,Yiqun Bao,Jianmin Wan +16 more
Reads0
Chats0
TLDR
OsPSS-1 plays a potential role in mediating cell expansion by regulating secretion of cell wall components and its potential product PS (phosphatidylserine) localized to organelles associated with exocytosis.Abstract:
The uppermost internode is one of the fastest elongating organs in rice, and is expected to require an adequate supply of cell-wall materials and enzymes to the cell surface to enhance mechanical strength. Although it has been reported that the phenotype of shortened uppermost internode 1 (sui1) is caused by mutations in PHOSPHATIDYLSERINE SYNTHASE (OsPSS), the underlying mechanism remains unclear. Here we show that the OsPSS-1, as a gene expressed predominantly in elongating cells, regulates post-Golgi vesicle secretion to intercellular spaces. Mutation of OsPSS-1 leads to compromised delivery of CESA4 and secGFP towards the cell surface, resulting in weakened intercellular adhesion and disorganized cell arrangement in parenchyma. The phenotype of sui1-4 is caused largely by the reduction in cellulose contents in the whole plant and detrimental delivery of pectins in the uppermost internode. We found that OsPSS-1 and its potential product PS (phosphatidylserine) localized to organelles associated with exocytosis. These results together suggest that OsPSS-1 plays a potential role in mediating cell expansion by regulating secretion of cell wall components.read more
Citations
More filters
Proceedings Article
Image Processing
TL;DR: The main focus in MUCKE is on cleaning large scale Web image corpora and on proposing image representations which are closer to the human interpretation of images.
Journal ArticleDOI
Disruption of OsSEC3A increases the content of salicylic acid and induces plant defense responses in rice.
TL;DR: Rice exocyst subunit OsSEC3A interacts with OsSNAP32, a SNAP25-type SNARE protein, and disruption of Os SEC3A causes a lesion-mimic phenotype and enhanced defense response.
Journal ArticleDOI
Involvement of Phosphatidylserine and Triacylglycerol in the Response of Sweet Potato Leaves to Salt Stress.
Yicheng Yu,Meng Kou,Gao Zhonghui,Yang Liu,Ying Xuan,Yaju Liu,Zhonghou Tang,Qinghe Cao,Zongyun Li,Jian Sun +9 more
TL;DR: In this paper, the root and leaf lipidome profiles of salt-tolerant and salt-sensitive sweet potato cultivars (Xu 22 and Xu 32, respectively) were compared under salinity stress.
Journal ArticleDOI
Overexpression of phosphatidylserine synthase IbPSS1 affords cellular Na+ homeostasis and salt tolerance by activating plasma membrane Na+/H+ antiport activity in sweet potato roots.
Yicheng Yu,Ying Xuan,Xiaofeng Bian,Lei Zhang,Zhiyuan Pan,Meng Kou,Qinghe Cao,Zhonghou Tang,Qiang Li,Daifu Ma,Zongyun Li,Jian Sun +11 more
TL;DR: It is revealed that IbPSS1 contributes to the salt tolerance of sweet potato by enabling Na+ homeostasis and Na+ exclusion in the roots, and the latter process is possibly controlled by PS reinforcing Ca2+ signaling in the Roots.
Journal ArticleDOI
Phosphatidylserine Synthase from Salicornia europaea Is Involved in Plant Salt Tolerance by Regulating Plasma Membrane Stability
TL;DR: A positive correlation between PS levels and plant saltolerance is suggested, and that SePSS participates in plant salt tolerance by regulating PS levels, hence PM potential and permeability, which help maintain ion homeostasis.
References
More filters
Image processing with ImageJ
TL;DR: ImageJ is an open source Java-written program that is used for many imaging applications, including those that that span the gamut from skin analysis to neuroscience, and can read most of the widely used and significant formats used in biomedical images.
Journal ArticleDOI
Assaying chimeric genes in plants: The GUS gene fusion system
TL;DR: Gene fusions can be defined its DNA constructions that result in the coding sequences from one gene (r@o,ter) being transcribed and/or translated under the direction of the controlling sequences of another gene (cmltrr).
Journal ArticleDOI
Efficient transformation of rice (Oryza sativa L.) mediated by Agrobacterium and sequence analysis of the boundaries of the T-DNA.
TL;DR: A large number of morphologically normal, fertile, transgenic rice plants were obtained by co-cultivation of rice tissues with Agrobacterium tumefaciens, and sequence analysis revealed that the boundaries of the T-DNA in transgenic Rice plants were essentially identical to those intransgenic dicotyledons.
Journal Article
Exposure of phosphatidylserine on the surface of apoptotic lymphocytes triggers specific recognition and removal by macrophages.
Valerie A. Fadok,Dennis R. Voelker,Priscilla A. Campbell,J. John Cohen,D L Bratton,Peter M. Henson +5 more
TL;DR: The data suggest that macrophages specifically recognize phosphatidylserine that is exposed on the surface of lymphocytes during the development of apoptosis, and suggest that apoptotic lymphocytes lose membrane phospholipid asymmetry and expose phosphorus on the outer leaflet of the plasma membrane.
Journal ArticleDOI
Growth of the plant cell wall
TL;DR: Recent discoveries have uncovered how plant cells synthesize wall polysaccharides, assemble them into a strong fibrous network and regulate wall expansion during cell growth.