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Strigolactones and the regulation of pea symbioses in response to nitrate and phosphate deficiency


Foo, E and Yoneyama, K and Hugill, CJ and Quittenden, LJ and Reid, JB, Strigolactones and the regulation of pea symbioses in response to nitrate and phosphate deficiency, Molecular Plant, 6, (1) pp. 76-87. ISSN 1674-2052 (2013) [Refereed Article]

Copyright Statement

Copyright 2012 The Authors.

DOI: doi:10.1093/mp/sss115


New roles for the recently identified group of plant hormones, the strigolactones, are currently under active investigation. One of their key roles is to regulate plant symbioses. These compounds act as a rhizosphere signal in arbuscular mycorrhizal symbioses and as a positive regulator of nodulation in legumes. The phosphorous and nitrogen status of the soil has emerged as a powerful regulator of strigolactone production. However, until now the potential role of strigolactones in regulating mycorrhizal development and nodulation in response to nutrient deficiency has not been proven. In this paper the role of strigolactone synthesis and response in regulating these symbioses is examined in pea (Pisum sativum L.). Pea is well suited to this study since there is a range of well-characterised strigolactone biosynthesis and response mutants that is unique amongst legumes. Evidence is provided for a novel endogenous role for strigolactone response within the root during mycorrhizal development, in addition to the action of strigolactones on the fungal partner. The strigolactone response pathway that regulates mycorrhizal development also appears to differ somewhat from the response pathway that regulates nodulation. Finally, studies with strigolactone-deficient pea mutants indicate that despite strong regulation of strigolactone production by both nitrogen and phosphate, strigolactones are not required to regulate these symbioses in response to nutrient deficiency.

Item Details

Item Type:Refereed Article
Keywords:strigolactones, pea, symbiosis, nitrate, phosphate
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:Foo, E (Associate Professor Eloise Foo)
UTAS Author:Hugill, CJ (Miss Cassandra Hugill)
UTAS Author:Quittenden, LJ (Dr Laura Quittenden)
UTAS Author:Reid, JB (Professor Jim Reid)
ID Code:80315
Year Published:2013
Web of Science® Times Cited:138
Deposited By:Plant Science
Deposited On:2012-10-29
Last Modified:2017-11-02
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