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Biochemical and physiological mechanisms leading to salt tolerance

Huchzermeyer, B; Hausmann, N; Paquet-Durand, Francois LU and Koyro, H.-W. (2004) In Tropical Ecology 45(1). p.141-150
Abstract
We showed that malic enzyme and F-type ATPase isolated from glycophytes and halophytes do not differ significantly in their amino acid composition. Isolated enzymes from both types of plants showed nearly identical salt sensitivity, each, but enzyme activities in fresh homogenates from halophyte leaves apparently were more salt resistant as compared to the ones from glycophytes. These results suggest that some cytosolic compounds other than the tested enzymes bring about salt tolerance. We observed distinct differences in photosynthate export out of the chloroplasts when comparing salt stress response of glycophytes and halophytes. In contrast to glycophytes metabolite leakage out of the chloroplasts or internal metabolite pool size are... (More)
We showed that malic enzyme and F-type ATPase isolated from glycophytes and halophytes do not differ significantly in their amino acid composition. Isolated enzymes from both types of plants showed nearly identical salt sensitivity, each, but enzyme activities in fresh homogenates from halophyte leaves apparently were more salt resistant as compared to the ones from glycophytes. These results suggest that some cytosolic compounds other than the tested enzymes bring about salt tolerance. We observed distinct differences in photosynthate export out of the chloroplasts when comparing salt stress response of glycophytes and halophytes. In contrast to glycophytes metabolite leakage out of the chloroplasts or internal metabolite pool size are more strictly regulated in halophytes. Pronounced differences were observed, when measuring P-type ATPase activities at the plasmalemma. Apparently, most of the difference between salt tolerant plants (halophytes) and glycophytes is due to a faster and (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Tropical Ecology
volume
45
issue
1
pages
141 - 150
publisher
International Society for Tropical Ecology
external identifiers
  • scopus:8844271837
ISSN
0564-3295
language
English
LU publication?
no
id
c636404a-6b43-4f27-a87c-85f77db126de (old id 1129601)
date added to LUP
2008-06-16 10:58:00
date last changed
2017-07-16 03:56:32
@article{c636404a-6b43-4f27-a87c-85f77db126de,
  abstract     = {We showed that malic enzyme and F-type ATPase isolated from glycophytes and halophytes do not differ significantly in their amino acid composition. Isolated enzymes from both types of plants showed nearly identical salt sensitivity, each, but enzyme activities in fresh homogenates from halophyte leaves apparently were more salt resistant as compared to the ones from glycophytes. These results suggest that some cytosolic compounds other than the tested enzymes bring about salt tolerance. We observed distinct differences in photosynthate export out of the chloroplasts when comparing salt stress response of glycophytes and halophytes. In contrast to glycophytes metabolite leakage out of the chloroplasts or internal metabolite pool size are more strictly regulated in halophytes. Pronounced differences were observed, when measuring P-type ATPase activities at the plasmalemma. Apparently, most of the difference between salt tolerant plants (halophytes) and glycophytes is due to a faster and},
  author       = {Huchzermeyer, B and Hausmann, N and Paquet-Durand, Francois and Koyro, H.-W.},
  issn         = {0564-3295},
  language     = {eng},
  number       = {1},
  pages        = {141--150},
  publisher    = {International Society for Tropical Ecology},
  series       = {Tropical Ecology},
  title        = {Biochemical and physiological mechanisms leading to salt tolerance},
  volume       = {45},
  year         = {2004},
}