NDLI: Casparian strip diffusion barrier in Arabidopsis is made of a lignin polymer without suberin

Content Provider	PubMed Central
Author	Naseer, Sadaf Lee, Yuree Lapierre, Catherine Franke, Rochus Christiane, Nawrath Geldner, Niko
Abstract	Casparian strips are ring-like cell-wall modifications in the root endodermis of vascular plants. Their presence generates a paracellular barrier, analogous to animal tight junctions, that is thought to be crucial for selective nutrient uptake, exclusion of pathogens, and many other processes. Despite their importance, the chemical nature of Casparian strips has remained a matter of debate, confounding further molecular analysis. Suberin, lignin, lignin-like polymers, or both, have been claimed to make up Casparian strips. Here we show that, in Arabidopsis, suberin is produced much too late to take part in Casparian strip formation. In addition, we have generated plants devoid of any detectable suberin, which still establish functional Casparian strips. In contrast, manipulating lignin biosynthesis abrogates Casparian strip formation. Finally, monolignol feeding and lignin-specific chemical analysis indicates the presence of archetypal lignin in Casparian strips. Our findings establish the chemical nature of the primary root-diffusion barrier in Arabidopsis and enable a mechanistic dissection of the formation of Casparian strips, which are an independent way of generating tight junctions in eukaryotes.
Related Links	http://dx.doi.org/10.1073/pnas.1205726109
Ending Page	10106
Page Count	6
Starting Page	10101
File Format	PDF
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	25
Volume Number	109
Language	English
Publisher	National Academy of Sciences
Publisher Date	2012-06-19
Access Restriction	Open
Rights Holder	National Academy of Sciences
Subject Keyword	General Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Casparian strip diffusion barrier in Arabidopsis is made of a lignin polymer without suberin.

Casparian strip diffusion barrier in Arabidopsis is made of a lignin polymer without suberin

Prevention of Radial Oxygen Loss Is Associated With Exodermal Suberin Along Adventitious Roots of Annual Wild Species of Echinochloa

A peptide hormone required for Casparian strip diffusion barrier formation in Arabidopsis roots.

Dirigent domain-containing protein is part of the machinery required for formation of the lignin-based Casparian strip in the root

Apoplastic barriers in roots: chemical composition of endodermal and hypodermal cell walls

Dirigent domain-containing protein is part of the machinery required for formation of the lignin-based Casparian strip in the root.

Correction for Hosmani et al., Dirigent domain-containing protein is part of the machinery required for formation of the lignin-based Casparian strip in the root

Physiological roles of Casparian strips and suberin in the transport of water and solutes.

Casparian strip diffusion barrier in Arabidopsis is made of a lignin polymer without suberin

Similar Documents

Casparian strip diffusion barrier in Arabidopsis is made of a lignin polymer without suberin.

Casparian strip diffusion barrier in Arabidopsis is made of a lignin polymer without suberin

Prevention of Radial Oxygen Loss Is Associated With Exodermal Suberin Along Adventitious Roots of Annual Wild Species of Echinochloa

A peptide hormone required for Casparian strip diffusion barrier formation in Arabidopsis roots.

Dirigent domain-containing protein is part of the machinery required for formation of the lignin-based Casparian strip in the root

Apoplastic barriers in roots: chemical composition of endodermal and hypodermal cell walls

Dirigent domain-containing protein is part of the machinery required for formation of the lignin-based Casparian strip in the root.

Correction for Hosmani et al., Dirigent domain-containing protein is part of the machinery required for formation of the lignin-based Casparian strip in the root

Physiological roles of Casparian strips and suberin in the transport of water and solutes.

Casparian strip diffusion barrier in Arabidopsis is made of a lignin polymer without suberin