Linked Life Data

19810813

Source:http://linkedlifedata.com/resource/pubmed/id/19810813

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2009-10-8
pubmed:databankReference
pubmed:abstractText
Sinorhizobium fredii HH103 secretes through the type III secretion system at least eight nodulation outer proteins (Nops), including the effector NopP. These proteins are necessary for an effective nodulation of soybean. In this work, we show that expression of the nopP gene depended on flavonoids and on the transcriptional regulators NodD1 and TtsI. Inactivation of nopP led to an increase in the symbiotic capacity of S. fredii HH103 to nodulate Williams soybean. In addition, we studied whether Nops affect the expression of the pathogenesis-related genes GmPR1, GmPR2, and GmPR3 in soybean roots and shoots. In the presence of S. fredii HH103, expression of pathogenesis-related (PR) gene PR1 was induced in soybean roots 4 days after inoculation and it increased 8 days after inoculation. The absence of Nops provoked a higher induction of PR1 in both soybean roots and shoots, suggesting that Nops function early, diminishing plant defense responses during rhizobial infection. However, the inactivation of nopP led to a decrease in PR1 expression. Therefore, the absence of NopP or that of the complete set of Nops seems to have opposite effects on the symbiotic performance and on the elicitation of soybean defense responses.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0894-0282
pubmed:author
pubmed:issnType
Print
pubmed:volume
22
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1445-54
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
The absence of Nops secretion in Sinorhizobium fredii HH103 increases GmPR1 expression in Williams soybean.
pubmed:affiliation
Departamento de Microbiología, Facultad de Biología, Universidad de Sevilla, Sevilla, Spain.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't