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Temperature dependent defence of Nicotiana tabacum against Cucumber mosaic virus and recovery occurs with the formation of dark green islands
- Source :
- Journal of Plant Biology. 59:293-301
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Temperature is an important environmental factor controlling plant growth, development, and immune response. However, the role of temperature in plant disease resistance is still elusive. In the present study, the potential effects of temperature on the interaction between Nicotiana tabacum and Cucumber mosaic virus (CMV) were investigated. Our results indicated that N. tabacum plants displayed severe symptoms at early stage of post inoculation at high temperature (HT, 28°C), associated with higher viral replication level, more serious stress damages. By contrast, low temperature (LT, 18°C) effectively delayed the replication of CMV compared with elevated temperatures. Additionally, quantitative real-time PCR analyses revealed that lower temperatures (≤ 24°C) promote salicylic acid (SA) dependent responses, whereas higher temperatures (> 24°C) activate the genes expression of jasmonic acid (JA) pathway. Interestingly, the dark green islands (DGIs) appeared much earlier in CMV-inoculated plants grown at HT compared with those at LT and the accumulation of virus small interfering RNAs in plants were significantly up-regulated under elevated temperatures at early stage of post inoculation. Taken together, these results indicated that temperature changes had important effects on plant defence response, and different temperatures could induce different immune pathways of N. tabacum against CMV infection.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Inoculation
Jasmonic acid
Nicotiana tabacum
fungi
food and beverages
Plant Science
Biology
Plant disease resistance
biology.organism_classification
01 natural sciences
Virology
Virus
Microbiology
Cucumber mosaic virus
03 medical and health sciences
chemistry.chemical_compound
030104 developmental biology
Viral replication
chemistry
Salicylic acid
010606 plant biology & botany
Subjects
Details
- ISSN :
- 18670725 and 12269239
- Volume :
- 59
- Database :
- OpenAIRE
- Journal :
- Journal of Plant Biology
- Accession number :
- edsair.doi...........c370fe8d87a433b8f38cff769d6d3fb7