TY - JOUR
T1 - Latitudinal variation in soil nematode communities under climate warming-related range-expanding and native plants
AU - Wilschut, Rutger A.
AU - Geisen, Stefan
AU - Martens, Henk
AU - Kostenko, Olga
AU - de Hollander, Mattias
AU - ten Hooven, Freddy C.
AU - Weser, Carolin
AU - Snoek, L.B.
AU - Bloem, Janneke
AU - Caković, Danka
AU - Čelik, Tatjana
AU - Koorem, Kadri
AU - Krigas, Nikos
AU - Manrubia, Marta
AU - Ramirez, Kelly S.
AU - Tsiafouli, Maria A.
AU - Vreš, Branko
AU - van der Putten, Wim H.
PY - 2019/8/1
Y1 - 2019/8/1
N2 - Current climate change has led to latitudinal and altitudinal range expansions of numerous species. During such range expansions, plant species are expected to experience changes in interactions with other organisms, especially with belowground biota that have a limited dispersal capacity. Nematodes form a key component of the belowground food web as they include bacterivores, fungivores, omnivores and root herbivores. However, their community composition under climate change-driven intracontinental range-expanding plants has been studied almost exclusively under controlled conditions, whereas little is known about actual patterns in the field. Here, we use novel molecular sequencing techniques combined with morphological quantification in order to examine nematode communities in the rhizospheres of four range-expanding and four congeneric native species along a 2,000 km latitudinal transect from South-Eastern to North-Western Europe. We tested the hypotheses that latitudinal shifts in nematode community composition are stronger in range-expanding plant species than in congeneric natives and that in their new range, range-expanding plant species accumulate fewest root-feeding nematodes. Our results show latitudinal variation in nematode community composition of both range expanders and native plant species, while operational taxonomic unit richness remained the same across ranges. Therefore, range-expanding plant species face different nematode communities at higher latitudes, but this is also the case for widespread native plant species. Only one of the four range-expanding plant species showed a stronger shift in nematode community composition than its congeneric native and accumulated fewer root-feeding nematodes in its new range. We conclude that variation in nematode community composition with increasing latitude occurs for both range-expanding and native plant species and that some range-expanding plant species may become released from root-feeding nematodes in the new range.
AB - Current climate change has led to latitudinal and altitudinal range expansions of numerous species. During such range expansions, plant species are expected to experience changes in interactions with other organisms, especially with belowground biota that have a limited dispersal capacity. Nematodes form a key component of the belowground food web as they include bacterivores, fungivores, omnivores and root herbivores. However, their community composition under climate change-driven intracontinental range-expanding plants has been studied almost exclusively under controlled conditions, whereas little is known about actual patterns in the field. Here, we use novel molecular sequencing techniques combined with morphological quantification in order to examine nematode communities in the rhizospheres of four range-expanding and four congeneric native species along a 2,000 km latitudinal transect from South-Eastern to North-Western Europe. We tested the hypotheses that latitudinal shifts in nematode community composition are stronger in range-expanding plant species than in congeneric natives and that in their new range, range-expanding plant species accumulate fewest root-feeding nematodes. Our results show latitudinal variation in nematode community composition of both range expanders and native plant species, while operational taxonomic unit richness remained the same across ranges. Therefore, range-expanding plant species face different nematode communities at higher latitudes, but this is also the case for widespread native plant species. Only one of the four range-expanding plant species showed a stronger shift in nematode community composition than its congeneric native and accumulated fewer root-feeding nematodes in its new range. We conclude that variation in nematode community composition with increasing latitude occurs for both range-expanding and native plant species and that some range-expanding plant species may become released from root-feeding nematodes in the new range.
KW - Centaurea stoebe
KW - enemy release hypothesis
KW - plant-pathogenic nematodes
KW - range expansion
KW - range-expanding plant species
KW - root-feeding nematodes
U2 - 10.1111/gcb.14657
DO - 10.1111/gcb.14657
M3 - Article
C2 - 31002208
AN - SCOPUS:85068440514
VL - 25
SP - 2714
EP - 2726
JO - Global Change Biology
JF - Global Change Biology
SN - 1354-1013
IS - 8
ER -
