The growth defect of lrt1, a maize mutant lacking lateral roots, can be complemented by symbiotic fungi or high phosphate nutrition

Details

Serval ID
serval:BIB_6B545CEE27EE
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
The growth defect of lrt1, a maize mutant lacking lateral roots, can be complemented by symbiotic fungi or high phosphate nutrition
Journal
Planta
Author(s)
Paszkowski  U., Boller  T.
ISSN
0032-0935
Publication state
Published
Issued date
02/2002
Peer-reviewed
Oui
Volume
214
Number
4
Pages
584-90
Notes
Comparative Study
Journal Article --- Old month value: Feb
Abstract
The growth of three maize (Zea mays L.) mutants, each impaired in the formation of one individual element of its root system, was compared under "natural" limiting phosphate conditions (0.1 mM). Mutant plants exhibiting a reduction in root hairs (rth3-1) or a depletion of crown and brace roots (rtcs) grew as well as the corresponding wild-type plants. However, mutant plants lacking lateral roots (lrt1) showed a strong reduction in plant growth. The growth defect of lrt1 was overcome when it was grown in association with an arbuscular mycorrhizal fungus, Glomus mosseae. Establishment of symbiosis was associated with the occurrence of a new type of lateral root. These new lateral roots were stunted and highly branched, giving rise to a bush-like structure. Supply of high phosphate (1 microM) ameliorated the growth of lrt1 plants too, but less efficiently than the symbiosis did. Hence, arbuscular mycorrhizal fungi as well as phosphate functionally complemented the lrt1 mutation.
Keywords
Fungi/*growth & development Mutation Phosphates/*pharmacology Plant Roots/drug effects/*growth & development/microbiology Plant Shoots/drug effects/growth & development/microbiology Potassium Compounds/pharmacology Symbiosis Zea mays/genetics/*growth & development/microbiology Zygomycota/growth & development
Pubmed
Web of science
Create date
24/01/2008 19:47
Last modification date
20/08/2019 14:25
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