Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:3.1.26.9 (
ribonuclease
)
6,589
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Piriformospora indica
, an endophytic root-colonizing fungus, efficiently promotes plant growth and induces resistance to abiotic stress and biotic diseases.
P. indica
fungal cell wall extract induces cytoplasmic calcium elevation in host plant roots. Here, we show that cellotriose (CT) is an elicitor-active cell wall moiety released by
P. indica
into the medium. CT induces a mild defense-like response, including the production of reactive oxygen species, changes in membrane potential, and the expression of genes involved in growth regulation and root development. CT-based cytoplasmic calcium elevation in Arabidopsis (
Arabidopsis thaliana
) roots does not require the BAK1 coreceptor or the putative Ca
2+
channels TPC1, GLR3.3, GLR2.4, and GLR2.5 and operates synergistically with the elicitor chitin. We identified an
ethyl methanesulfonate
-induced mutant (
cytoplasmic
calcium elevation mutant
) impaired in the response to CT and various other cellooligomers (
n
= 2-7), but not to chitooligomers (
n
= 4-8), in roots. The mutant contains a single nucleotide exchange in the gene encoding a poly(A)
ribonuclease
(AtPARN; At1g55870) that degrades the poly(A) tails of specific mRNAs. The wild-type
PARN
cDNA, expressed under the control of a 35S promoter, complements the mutant phenotype. Our identification of cellotriose as a novel chemical mediator casts light on the complex
P. indica
-plant mutualistic relationship.
...
PMID:A Poly(A) Ribonuclease Controls the Cellotriose-Based Interaction between
Piriformospora indica
and Its Host Arabidopsis. 2937 Dec 49
