Transglutaminase activity decrease during acclimation to hyposaline conditions in marine seaweed Grateloupia doryphora (Rhodophyta, Halymeniaceae)

被引：19

作者：

Garcia-Jimenez, Pilar ^{[1
]}

Just, Pilar M. ^{[1
]}

Delgado, Ancor M. ^{[1
]}

Robaina, Rafael R. ^{[1
]}

机构：

[1] Univ Las Palmas Gran Canaria, Fac Ciencias Mar, Dept Biol, ES-35017 Las Palmas Gran Canaria, Spain

来源：

JOURNAL OF PLANT PHYSIOLOGY | 2007年 / 164卷 / 03期

关键词：

hyposaline shock; marine alga; photosynthesis; polyamine levels; transglutaminase;

D O I：

10.1016/j.jplph.2006.05.018

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

tetraamine spermine (SPM) have been related to environmental stress, including salt stress. A marine red macrophyte alga Grateloupia doryphora (Montagne) Howe was used to investigate the role of PAs during acclimation to moderate hyposaline conditions (incubation 24h in 18psu seawater as compared to 36psu of natural seawater). The.,results obtained showed that a moderate hyposaline shock caused an increase in the free fraction of PUT, SPD and SPM, mainly due to a decrease in TGase activity, together with an apparent increase in the L-arginine dependent PAs synthesis (ODC and arginase decreased, and ADC slightly increased). The photosynthetic rate increased in thalli when exposed to free SPD at. 18 psu, but it did not increase at 36 psu. (c) 2006 Elsevier GmbH. All rights reserved.

引用

页码：367 / 370

页数：4

共 13 条

[1] SEQUESTERED END-PRODUCTS AND ENZYME REGULATION - THE CASE OF ORNITHINE DECARBOXYLASE [J].