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Phosphatase activities of arbuscular mycorrhizal intraradical

van Aarle, Ingrid LU ; Rouhier, Hervé LU and Saito, M (2002) In Mycological Research1989-01-01+01:002010-01-01+01:00 106(10). p.1224-1224
Abstract
We investigated the influence of changes in external phosphorus (P) concentration on the proportion of phosphatase-active structures of the arbuscular mycorrhizal fungus Gigaspora margarita associated with Allium cepa. The P treatment was started when mycorrhizal colonisation had been established, and plant systems were harvested three times after the start of the P treatment. Higher shoot dry weights and P contents were observed in the high-P treated plants at the last harvest. We did not find any change in the proportion of phosphatase-active extraradical mycelium following P treatment. However, the proportion of alkaline phosphatase-active mycelium was positively correlated for extraradical and intraradical mycelium. Also, the... (More)
We investigated the influence of changes in external phosphorus (P) concentration on the proportion of phosphatase-active structures of the arbuscular mycorrhizal fungus Gigaspora margarita associated with Allium cepa. The P treatment was started when mycorrhizal colonisation had been established, and plant systems were harvested three times after the start of the P treatment. Higher shoot dry weights and P contents were observed in the high-P treated plants at the last harvest. We did not find any change in the proportion of phosphatase-active extraradical mycelium following P treatment. However, the proportion of alkaline phosphatase-active mycelium was positively correlated for extraradical and intraradical mycelium. Also, the proportion of alkaline phosphatase-active arbuscules seemed to increase with the shoot fresh weight, whereas the proportion of acid phosphatase-active arbuscules decreased with higher shoot P concentration and dry weight. We have shown experimentally that the intraradical mycelium of G. margarita, but not the extraradical mycelium, responds metabolically to plant P concentration, and possibly also to external P availability. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Mycological Research1989-01-01+01:002010-01-01+01:00
volume
106
issue
10
pages
1224 - 1224
publisher
Elsevier
external identifiers
  • wos:000180090000011
  • scopus:0036818358
ISSN
1469-8102
DOI
10.1017/S0953756202006470
language
English
LU publication?
yes
id
55c4ea32-ff9f-4875-978f-0b0514dfb952 (old id 149423)
date added to LUP
2007-07-02 07:46:47
date last changed
2017-11-28 14:56:33
@article{55c4ea32-ff9f-4875-978f-0b0514dfb952,
  abstract     = {We investigated the influence of changes in external phosphorus (P) concentration on the proportion of phosphatase-active structures of the arbuscular mycorrhizal fungus Gigaspora margarita associated with Allium cepa. The P treatment was started when mycorrhizal colonisation had been established, and plant systems were harvested three times after the start of the P treatment. Higher shoot dry weights and P contents were observed in the high-P treated plants at the last harvest. We did not find any change in the proportion of phosphatase-active extraradical mycelium following P treatment. However, the proportion of alkaline phosphatase-active mycelium was positively correlated for extraradical and intraradical mycelium. Also, the proportion of alkaline phosphatase-active arbuscules seemed to increase with the shoot fresh weight, whereas the proportion of acid phosphatase-active arbuscules decreased with higher shoot P concentration and dry weight. We have shown experimentally that the intraradical mycelium of G. margarita, but not the extraradical mycelium, responds metabolically to plant P concentration, and possibly also to external P availability.},
  author       = {van Aarle, Ingrid and Rouhier, Hervé and Saito, M},
  issn         = {1469-8102},
  language     = {eng},
  number       = {10},
  pages        = {1224--1224},
  publisher    = {Elsevier},
  series       = {Mycological Research1989-01-01+01:002010-01-01+01:00},
  title        = {Phosphatase activities of arbuscular mycorrhizal intraradical},
  url          = {http://dx.doi.org/10.1017/S0953756202006470},
  volume       = {106},
  year         = {2002},
}