PMID- 31552784
OWN - NLM
STAT- MEDLINE
DCOM- 20200221
LR  - 20200221
IS  - 0031-949X (Print)
IS  - 0031-949X (Linking)
VI  - 110
IP  - 2
DP  - 2020 Feb
TI  - Genetic Variation Explains Changes in Susceptibility in a Naive Host Against an 
      Invasive Forest Pathogen: The Case of Alder and the Phytophthora alni Complex.
PG  - 517-525
LID - 10.1094/PHYTO-07-19-0272-R [doi]
AB  - Predicting whether naive tree populations have the potential to adapt to exotic 
      pathogens is necessary owing to the increasing rate of invasions. Adaptation may 
      occur as a result of natural selection when heritable variation in terms of 
      susceptibility exists in the naive population. We searched for signs of selection 
      on black alder (Alnus glutinosa) stands growing on riverbanks invaded by two 
      pathogens differing in aggressiveness, namely, Phytophthora uniformis (PU) and 
      Phytophthora x alni (PA). We compared the survival and heritability measures from 
      72 families originating from six invaded and uninvaded (naive) sites by 
      performing in vitro inoculations. The results from the inoculations were used to 
      assess the relative contribution of host genetic variation on natural selection. 
      We found putative signs of natural selection on alder exerted by PU but not by 
      PA. For PU, we found a higher survival in families originating from invaded sites 
      compared with uninvaded sites. The narrow sense heritability of susceptibility to 
      PU of uninvaded populations was significantly higher than to PA. Simulated data 
      supported the role of heritable genetic variation on natural selection and 
      discarded a high aggressiveness of PA decreasing the transmission rate as an 
      alternative hypothesis for a slow natural selection. Our findings expand on 
      previous attempts of using heritability as a predictor for the likelihood of 
      natural adaptation of naive tree populations to invasive pathogens. Measures of 
      genetic variation can be useful for risk assessment purposes or when managing 
      Phytophthora invasions.
FAU - Redondo, Miguel A
AU  - Redondo MA
AUID- ORCID: 0000-0002-6383-5457
AD  - Department of Forest Mycology and Plant Pathology, Swedish University of 
      Agricultural Sciences, Uppsala, Sweden.
FAU - Stenlid, Jan
AU  - Stenlid J
AD  - Department of Forest Mycology and Plant Pathology, Swedish University of 
      Agricultural Sciences, Uppsala, Sweden.
FAU - Oliva, Jonas
AU  - Oliva J
AD  - Department of Crop and Forest Sciences, University of Lleida, Lleida, Spain.
AD  - Joint Research Unit Agrotecnio, Forest Sciences and Technology Centre of 
      Catalonia, Lleida, Spain.
LA  - eng
PT  - Journal Article
DEP - 20200103
PL  - United States
TA  - Phytopathology
JT  - Phytopathology
JID - 9427222
SB  - IM
MH  - *Alnus
MH  - Forests
MH  - Genetic Variation
MH  - *Phytophthora
MH  - Plant Diseases
OTO - NOTNLM
OT  - Phytophthora
OT  - adaptation
OT  - compartmental SIR model
OT  - disease control and pest management
OT  - ecology and epidemiology
OT  - inoculation
OT  - plant-pathogen interactions
OT  - simulation
EDAT- 2019/09/26 06:00
MHDA- 2020/02/23 06:00
CRDT- 2019/09/26 06:00
PHST- 2019/09/26 06:00 [pubmed]
PHST- 2020/02/23 06:00 [medline]
PHST- 2019/09/26 06:00 [entrez]
AID - 10.1094/PHYTO-07-19-0272-R [doi]
PST - ppublish
SO  - Phytopathology. 2020 Feb;110(2):517-525. doi: 10.1094/PHYTO-07-19-0272-R. Epub 
      2020 Jan 3.