Abstract
【Objective】The project was conducted to elucidate a key role for nitric oxide (NO) played during rice-Xanthomonas spp interactions by triggering hypersensitive cell death (HCD) and inducing defense genes. 【Method】NO production and defense gene expression in rice suspension-cultured cells was compared after X. campestris pv. vesicatoria (Xcv) inoculations, a non-host bacterial pathogen and X. oryzae pv. oryzae (Xoo), the bacterial blight pathogen of rice. 【Result】 NO burst, activation of nitric oxide synthase (NOS), expression of NO synthesis-related genes (nos and nr) and defense-related genes (pal, pox and gst) was found to be significantly induced by Xcv, not by Xoo. Application of NO scavenger PTIO or co-inoculation of Xcv with Xoo resulted in the significant suppression of Xcv-induced gene expression.【Conclusion】Xcv induces defense gene expression and HCD of rice suspension cultures through a NO-dependent signal pathway, whereas Xoo inhibits NO-mediated defense gene expression and HCD by suppressing NO production and detoxifying NO.
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Claims 7
Claim · model-written summary
Xcv significantly induced a nitric oxide burst and nitric oxide synthase activity in rice cells, unlike Xoo.
- Taxon
- rice
Oryza sativae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NO burst, activation of nitric oxide synthase (NOS), expression of NO synthesis-related genes (nos and nr) and defense-related genes (pal, pox and gst) was found to be significantly induced by Xcv, not by Xoo”
t0“Rice”
Claim · model-written summary
Xcv significantly induced rice nos and nr expression, unlike Xoo.
- Taxon
- riceOryza sativae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expression of NO synthesis-related genes (nos and nr) and defense-related genes (pal, pox and gst) was found to be significantly induced by Xcv, not by Xoo”
t0“Rice”
Claim · model-written summary
Xcv significantly induced rice pal, pox and gst expression, unlike Xoo.
- Taxon
- riceOryza sativae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“defense-related genes (pal, pox and gst) was found to be significantly induced by Xcv, not by Xoo”
t0“Rice”
Claim · model-written summary
NO scavenger PTIO suppressed Xcv-induced gene expression.
- Taxon
- riceOryza sativae0t0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of NO scavenger PTIO or co-inoculation of Xcv with Xoo resulted in the significant suppression of Xcv-induced gene expression”
t0“Rice”
Claim · model-written summary
Co-inoculation with Xoo suppressed Xcv-induced gene expression.
- Taxon
- riceOryza sativae0t0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“co-inoculation of Xcv with Xoo resulted in the significant suppression of Xcv-induced gene expression”
t0“Rice”
Claim · model-written summary
The authors interpret Xcv-induced defense expression and cell death as NO dependent.
- Taxon
- riceOryza sativae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Xcv induces defense gene expression and HCD of rice suspension cultures through a NO-dependent signal pathway”
t0“Rice”
Claim · model-written summary
The authors interpret Xoo as inhibiting NO-mediated defense and cell death by suppressing and detoxifying NO.
- Taxon
- riceOryza sativae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Xoo inhibits NO-mediated defense gene expression and HCD by suppressing NO production and detoxifying NO”
t0“Rice”
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