Skip Navigation

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (21)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Katsuhara, M.
Right arrow Articles by Kasamo, K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Katsuhara, M.
Right arrow Articles by Kasamo, K.
Agricola
Right arrow Articles by Katsuhara, M.
Right arrow Articles by Kasamo, K.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Plant and Cell Physiology, 2003, Vol. 44, No. 12 1378-1383
© 2003 Oxford University Press

Over-expression of a Barley Aquaporin Increased the Shoot/Root Ratio and Raised Salt Sensitivity in Transgenic Rice Plants

Maki Katsuhara1,3, Kazuki Koshio1, Mineo Shibasaka1, Yasuyuki Hayashi2, Takahiko Hayakawa2 and Kunihiro Kasamo1

1 Research Institute for Bioresources, Okayama University, Kurashiki, 710-0046 Japan
2 Plantech Research Institute, Yokohama, 227-0033 Japan

Barley HvPIP2;1 is a plasma membrane aquaporin and its expression was down-regulated after salt stress in barley [Katsuhara et al. (2002) Plant Cell Physiol. 43: 885]. We produced and analyzed transgenic rice plants over-expressing barley HvPIP2;1 in the present study. Over-expression of HvPIP2;1 increased (1) radial hydraulic conductivity of roots (Lpr) to 140%, and (2) the mass ratio of shoot to root up to 150%. In these transgenic rice plants under salt stress of 100 mM NaCl, growth reduction was greater than in non-transgenic plants. A decrease in shoot water content (from 79% to 61%) and reduction of root mass or shoot mass (both less than 40% of non-stressed plants) were observed in transgenic plants under salt stress for 2 weeks. These results indicated that over-expression of HvPIP2;1 makes rice plants sensitive to 100 mM NaCl. The possible involvement of aquaporins in salt tolerance is discussed.

3 Corresponding author: E-mail, kmaki{at}rib.okayama-u.ac.jp; Fax, +81-86-434-1249.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Plant Cell PhysiolHome page
T. Matsumoto, H.-L. Lian, W.-A. Su, D. Tanaka, C. w. Liu, I. Iwasaki, and Y. Kitagawa
Role of the Aquaporin PIP1 Subfamily in the Chilling Tolerance of Rice
Plant Cell Physiol., February 1, 2009; 50(2): 216 - 229.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
P. M. Neumann
Coping Mechanisms for Crop Plants in Drought-prone Environments
Ann. Bot., May 1, 2008; 101(7): 901 - 907.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
J. Y. Jang, J. Y. Rhee, D. G. Kim, G. C. Chung, J. H. Lee, and H. Kang
Ectopic Expression of a Foreign Aquaporin Disrupts the Natural Expression Patterns of Endogenous Aquaporin Genes and Alters Plant Responses to Different Stress Conditions
Plant Cell Physiol., September 1, 2007; 48(9): 1331 - 1339.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
Y. T. Hanba, M. Shibasaka, Y. Hayashi, T. Hayakawa, K. Kasamo, I. Terashima, and M. Katsuhara
Overexpression of the Barley Aquaporin HvPIP2;1 Increases Internal CO2 Conductance and CO2 Assimilation in the Leaves of Transgenic Rice Plants
Plant Cell Physiol., May 1, 2004; 45(5): 521 - 529.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.