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Gene expression data from Medicago truncatula mutant plantlet roots treated with Myc-LCOs.

ABSTRACT: Legumes interact with soil fungi, leading to the development of arbuscular mycorrhizal (AM) roots. Diffusible AM fungal signals were identified as sulphated and non-sulphated LCOs (sMyc-LCOs and nsMyc-LCOs). Applying Myc-LCOs on roots of symbiotic mutants, we used GeneChips to detail the global programme of gene expression in these mutants in response to the external application of Myc-LCOs. To harvest tissues for transcriptome profiling, three biological replicates consisting of 10 plantlets per treatment were selected. After 6 h of incubation in the climate chamber, 10 plantlets per batch were removed from the treatment (Myc-LCOs) or control solutions and harvested. During harvest, one mm of the root tip of each plantlet was removed and discarded. The remaining 2 to 2.5 cm of the distal root region were cut off and directly frozen in liquid nitrogen.

ORGANISM(S): Medicago truncatula

SUBMITTER: Helge KM-CM-<ster 

PROVIDER: E-GEOD-33637 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Transcriptional responses toward diffusible signals from symbiotic microbes reveal MtNFP- and MtDMI3-dependent reprogramming of host gene expression by arbuscular mycorrhizal fungal lipochitooligosaccharides.

Czaja Lisa F LF   Hogekamp Claudia C   Lamm Patrick P   Maillet Fabienne F   Martinez Eduardo Andres EA   Samain Eric E   Dénarié Jean J   Küster Helge H   Hohnjec Natalija N  

Plant physiology 20120531 4

The formation of root nodules and arbuscular mycorrhizal (AM) roots is controlled by a common signaling pathway including the calcium/calmodulin-dependent kinase Doesn't Make Infection3 (DMI3). While nodule initiation by lipochitooligosaccharide (LCO) Nod factors is well characterized, diffusible AM fungal signals were only recently identified as sulfated and nonsulfated LCOs. Irrespective of different outcomes, the perception of symbiotic LCOs in Medicago truncatula is mediated by the LysM rece  ...[more]

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