Candidate genes expression profiling during wilting in chickpea caused by Fusarium oxysporum f. sp. ciceris race 5
Autoři:
Cristina Caballo aff001; Patricia Castro aff002; Juan Gil aff002; Teresa Millan aff002; Josefa Rubio aff001; Jose V. Die aff002
Působiště autorů:
Área de Genómica y Biotecnología, IFAPA, Alameda del Obispo, Córdoba, Spain
aff001; Department of Genetics - ETSIAM, University of Córdoba, Campus de Rabanales, Córdoba, Spain
aff002
Vyšlo v časopise:
PLoS ONE 14(10)
Kategorie:
Research Article
doi:
https://doi.org/10.1371/journal.pone.0224212
Souhrn
Chickpea production may be seriously threatened by Fusarium wilt, a disease caused by the soil-borne fungus Fusarium oxysporum f. sp. ciceris. F. oxysporum race 5 is the most important race in the Mediterranean basin. Recently, the region responsible for resistance race 5 has been delimited within a region on chromosome 2 that spans 820 kb. To gain a better understanding of this genomic region, we used a transcriptomic approach based on quantitative real-time PCR to analyze the expression profiles of 22 selected candidate genes. We used a pair of near-isogenic lines (NILs) differing in their sensitivity to Fusarium race 5 (resistant vs susceptible) to monitor the transcriptional changes over a time-course experiment (24, 48, and 72 hours post inoculation, hpi). Qualitative differences occurred during the timing of regulation. A cluster of 12 genes were induced by the resistant NIL at 24 hpi, whereas a second cluster contained 9 genes induced by the susceptible NIL at 48 hpi. Their possible functions in the molecular defence of chickpea is discussed. Our study provides new insight into the molecular defence against Fusarium race 5 and demonstrates that development of NILs is a rich resource to facilitate the detection of candidate genes. The new genes regulated here may be useful against other Fusarium races.
Klíčová slova:
Fungi – Fusarium – Fusarium oxysporum – Gene expression – Gene regulation – Polymerase chain reaction – Transcription factors – Transcriptional control
Zdroje
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