Development of Casparian strip in rice cultivars.
The development of Casparian strips (CSs) on the endo- and exodermis and their chemical components in roots of three cultivars of rice (Oryza sativa) with different salt tolerance were compared using histochemistry and Fourier transform infrared (FTIR) spectroscopy. The development and deposition of suberin lamellae of CSs on the endo- and exodermis in the salt-tolerant cultivar Liaohan 109 was earlier than in the moderately tolerant cultivar Tianfeng 202 and the sensitive cultivar Nipponbare. The detection of chemical components indicated major contributions to the structure of the outer part from aliphatic suberin, lignin, and cell wall proteins and carbohydrates to the rhizodermis, exodermis, sclerenchyma, and one layer of cortical cells in series (OPR) and the endodermal Casparian strip. Moreover, the amounts of these major chemical components in the outer part of the Liaohan 109 root were higher than in Tianfeng 202 and Nipponbare, but there was no distinct difference in endodermal CSs among the three rice cultivars. The results suggest that the exodermis of the salt-tolerant cultivar Liaohan 109 functions as a barrier for resisting salt stress.
Institute of Botany, Chinese Academy of Sciences, Beijing, China.
Xia
X
Cai
Tong
T
Chen
QingYuan
Q
Zhou
Lei
L
Xu
LeQing
L
Qu
XueJun
X
Hua
JinXing
J
Lin
D000042:Absorption; D008055:Lipids; D012275:Oryza / Q000033:anatomy & histology* / Q000166:cytology / Q000378:metabolism; D018517:Plant Roots / Q000033:anatomy & histology* / Q000166:cytology / Q000378:metabolism; D055049:Salt Tolerance; D017550:Spectroscopy, Fourier Transform Infrared
D008055:Lipids; C065875:suberin
Science. 1974 Feb 15;183(4125):670-1
17778842
Ann Bot. 2005 Nov;96(6):989-96
16192293
New Phytol. 2007;173(2):264-78
17204074
Planta. 2003 Jun;217(2):193-205
12783327
Plant Physiol. 1992 May;99(1):203-12
16668850
Plant Cell Physiol. 2005 Nov;46(11):1799-808
16170202
J Exp Bot. 2004 Feb;55(396):433-47
14739266
Plant Physiol. 1997 Apr;113(4):1223-1231
12223670
Planta. 2002 May;215(1):14-25
12012237
Planta. 2004 May;219(1):41-7
14986139
Ann Bot. 2009 Mar;103(5):687-702
19151041
Planta. 2009 Jun;230(1):119-34
19363620
Adv Biochem Eng Biotechnol. 2001;71:1-49
11217409
Planta. 2001 Jul;213(3):474-7
11506371
Biopolymers. 2000;57(6):344-51
11054654
J Exp Bot. 2009;60(7):2155-67
19443620