Plant nutrient transporter regulation in arbuscular mycorrhizas
(2002) In Plant and Soil 244(1-2). p.247-251- Abstract
This review discusses the role arbuscular mycorrhizal fungi play in the regulation of plant nutrient transporter genes. Many plant nutrient transporter genes appear to be transcriptionally regulated by a feed-back mechanism that reduces their expression when the plant reaches an optimal level of nutrition. Their down-regulation in mycorrhizal roots, therefore, would be predicted as a result of symbiotic function. A variety of studies on Pi- Zn- and ammonium- or nitrate-transporter genes from two plant species indirectly support this model. For example, one study showed that the expression of the high-affinity Pi-transporter MtPT2 within mycorrhizal roots of Medicago truncatula was inversely correlated with the concentration of P within... (More)
This review discusses the role arbuscular mycorrhizal fungi play in the regulation of plant nutrient transporter genes. Many plant nutrient transporter genes appear to be transcriptionally regulated by a feed-back mechanism that reduces their expression when the plant reaches an optimal level of nutrition. Their down-regulation in mycorrhizal roots, therefore, would be predicted as a result of symbiotic function. A variety of studies on Pi- Zn- and ammonium- or nitrate-transporter genes from two plant species indirectly support this model. For example, one study showed that the expression of the high-affinity Pi-transporter MtPT2 within mycorrhizal roots of Medicago truncatula was inversely correlated with the concentration of P within the shoots, which suggested that P supply from the fungus influenced this gene's expression. However, there is some evidence that these plant nutrient transporters are also down-regulated within mycorrhizal roots by a mechanism not involving nutrient supply by the fungus. Carbon demand by the fungus may be one factor that can influence their expression within mycorrhizal roots.
(Less)
- author
- Burleigh, Stephen H. LU and Bechmann, Iben Ellegaard
- publishing date
- 2002-07-01
- type
- Contribution to journal
- publication status
- published
- keywords
- Arbuscular mycorrhizas, Nutrient transporters, Plants, Regulation
- in
- Plant and Soil
- volume
- 244
- issue
- 1-2
- pages
- 5 pages
- publisher
- Springer
- external identifiers
-
- scopus:0036657964
- ISSN
- 0032-079X
- DOI
- 10.1023/A:1020227232140
- language
- English
- LU publication?
- no
- id
- 479f7834-8bf3-47d6-a956-abc4dd319cce
- date added to LUP
- 2019-03-08 15:58:27
- date last changed
- 2022-03-17 21:57:29
@article{479f7834-8bf3-47d6-a956-abc4dd319cce,
abstract = {{<p>This review discusses the role arbuscular mycorrhizal fungi play in the regulation of plant nutrient transporter genes. Many plant nutrient transporter genes appear to be transcriptionally regulated by a feed-back mechanism that reduces their expression when the plant reaches an optimal level of nutrition. Their down-regulation in mycorrhizal roots, therefore, would be predicted as a result of symbiotic function. A variety of studies on Pi- Zn- and ammonium- or nitrate-transporter genes from two plant species indirectly support this model. For example, one study showed that the expression of the high-affinity Pi-transporter MtPT2 within mycorrhizal roots of Medicago truncatula was inversely correlated with the concentration of P within the shoots, which suggested that P supply from the fungus influenced this gene's expression. However, there is some evidence that these plant nutrient transporters are also down-regulated within mycorrhizal roots by a mechanism not involving nutrient supply by the fungus. Carbon demand by the fungus may be one factor that can influence their expression within mycorrhizal roots.</p>}},
author = {{Burleigh, Stephen H. and Bechmann, Iben Ellegaard}},
issn = {{0032-079X}},
keywords = {{Arbuscular mycorrhizas; Nutrient transporters; Plants; Regulation}},
language = {{eng}},
month = {{07}},
number = {{1-2}},
pages = {{247--251}},
publisher = {{Springer}},
series = {{Plant and Soil}},
title = {{Plant nutrient transporter regulation in arbuscular mycorrhizas}},
url = {{http://dx.doi.org/10.1023/A:1020227232140}},
doi = {{10.1023/A:1020227232140}},
volume = {{244}},
year = {{2002}},
}