The co-existence of multiple oak leaf flushes contributes to the large within-tree variation in chemistry, insect attack and pathogen infection.

Autor: Gaytán Á; Department of Ecology, Environment and Plant Sciences, Stockholm University, Svante Arrhenius väg 20A, Stockholm, Sweden., Moreira X; Misión Biológica de Galicia (MBG-CSIC), Apdo. 28, 36080, Pontevedra, Galicia, Spain., Castagneyrol B; BIOGECO, INRAE, University of Bordeaux, 33610, Cestas, France., Van Halder I; BIOGECO, INRAE, University of Bordeaux, 33610, Cestas, France., De Frenne P; Forest & Nature Laboratory, Ghent University, Geraardsbergsesteenweg 267, BE-9090, Gontrode-Melle, Belgium., Meeussen C; Forest & Nature Laboratory, Ghent University, Geraardsbergsesteenweg 267, BE-9090, Gontrode-Melle, Belgium., Timmermans BGH; Department of Agriculture, Louis Bolk Institute, Kosterijland 3-5, 3981 AJ, Bunnik, the Netherlands., Ten Hoopen JPJG; OneNature Ecology, Radarpad 22, 6816 TP, Arnhem, the Netherlands., Rasmussen PU; The National Research Centre for the Working Environment, 2100, Copenhagen, Denmark., Bos N; Section for Ecology & Evolution, University of Copenhagen, 2200, Copenhagen, Denmark., Jaatinen R; Natural Resources Institute Finland, Haapastensyrjä Breeding Station, FI-16200, Läyliäinen, Finland., Pulkkinen P; Natural Resources Institute Finland, Haapastensyrjä Breeding Station, FI-16200, Läyliäinen, Finland., Söderlund S; Department of Ecology, Environment and Plant Sciences, Stockholm University, Svante Arrhenius väg 20A, Stockholm, Sweden., Covelo F; Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, Carretera de Utrera km. 1, 41013, Seville, Spain., Gotthard K; Department of Zoology, Stockholm University, Svante Arrhenius väg 18B, SE-106 91, Stockholm, Sweden., Tack AJM; Department of Ecology, Environment and Plant Sciences, Stockholm University, Svante Arrhenius väg 20A, Stockholm, Sweden.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2022 Aug; Vol. 235 (4), pp. 1615-1628. Date of Electronic Publication: 2022 May 26.
DOI: 10.1111/nph.18209
Abstrakt: Many plant species produce multiple leaf flushes during the growing season, which might have major consequences for within-plant variation in chemistry and species interactions. Yet, we lack a theoretical or empirical framework for how differences among leaf flushes might shape variation in damage by insects and diseases. We assessed the impact of leaf flush identity on leaf chemistry, insect attack and pathogen infection on the pedunculate oak Quercus robur by sampling leaves from each leaf flush in 20 populations across seven European countries during an entire growing season. The first leaf flush had higher levels of primary compounds, and lower levels of secondary compounds, than the second flush, whereas plant chemistry was highly variable in the third flush. Insect attack decreased from the first to the third flush, whereas infection by oak powdery mildew was lowest on leaves from the first flush. The relationship between plant chemistry, insect attack and pathogen infection varied strongly among leaf flushes and seasons. Our findings demonstrate the importance of considering differences among leaf flushes for our understanding of within-tree variation in chemistry, insect attack and disease levels, something particularly relevant given the expected increase in the number of leaf flushes with climate change.
(© 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.)
Databáze: MEDLINE
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