Glomus intraradices induces changes in root system architecture of rice independently of common symbiosis signaling

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State: Public
Version: author
Serval ID
serval:BIB_0FB5A4556CF9
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Glomus intraradices induces changes in root system architecture of rice independently of common symbiosis signaling
Journal
New phytologist
Author(s)
Gutjahr C., Casieri L., Paszkowski U
ISSN
0028-646X
Publication state
Published
Issued date
05/2009
Peer-reviewed
Oui
Volume
182
Number
4
Pages
829-837
Language
english
Notes
Publication type : Article
Abstract
? Arbuscular mycorrhizal fungi colonize the roots of most monocotyledons and dicotyledons despite their different root architecture and cell patterning. Among the cereal hosts of arbuscular mycorrhizal fungi, Oryza sativa (rice) possesses a peculiar root system composed of three different types of roots: crown roots; large lateral roots; and fine lateral roots. Characteristic is the constitutive formation of aerenchyma in crown roots and large lateral roots and the absence of cortex from fine lateral roots. Here, we assessed the distribution of colonization by Glomus intraradices within this root system and determined its effect on root system architecture. ? Large lateral roots are preferentially colonized, and fine lateral roots are immune to arbuscular mycorrhizal colonization. Fungal preference for large lateral roots also occurred in sym mutants that block colonization of the root beyond rhizodermal penetration. ? Initiation of large lateral roots is significantly induced by G. intraradices colonization and does not require a functional common symbiosis signaling pathway from which some components are known to be needed for symbiosis-mediated lateral root induction in Medicago truncatula. ? Our results suggest variation of symbiotic properties among the different rice root-types and induction of the preferred tissue by arbuscular mycorrhizal fungi. Furthermore, signaling for arbuscular mycorrhizal-elicited alterations of the root system differs between rice and M. truncatula.
Keywords
common symbiosis (SYM) pathway, Glomus intraradices, lateral root, mycorrhiza, rice (Oryza sativa), root system architecture, signaling, symbiosis, ARBUSCULAR MYCORRHIZAL FUNGI, MEDICAGO-TRUNCATULA, DIFFUSIBLE FACTOR, LATERAL ROOTS, PHOSPHATE, PATHWAY, GROWTH, GENES, CONSERVATION, DIVERGENCE
Web of science
Open Access
Yes
Create date
18/05/2009 12:36
Last modification date
31/12/2019 8:08
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