Drought has negative consequences on aphid fitness and plant vigor: Insights from a meta-analysis.

Autor: Leybourne DJ; Division of Plant Sciences School of Life Science Dundee University Dundee UK.; Ecological Sciences Department The James Hutton Institute Dundee UK.; Cell and Molecular Sciences Department The James Hutton Institute Dundee UK., Preedy KF; Biomathematics and Statistics Scotland Dundee UK., Valentine TA; Ecological Sciences Department The James Hutton Institute Dundee UK., Bos JIB; Division of Plant Sciences School of Life Science Dundee University Dundee UK.; Cell and Molecular Sciences Department The James Hutton Institute Dundee UK., Karley AJ; Ecological Sciences Department The James Hutton Institute Dundee UK.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2021 Jul 28; Vol. 11 (17), pp. 11915-11929. Date of Electronic Publication: 2021 Jul 28 (Print Publication: 2021).
DOI: 10.1002/ece3.7957
Abstrakt: Aphids are abundant in natural and managed vegetation, supporting a diverse community of organisms and causing damage to agricultural crops. Due to a changing climate, periods of drought are anticipated to increase, and the potential consequences of this for aphid-plant interactions are unclear.Using a meta-analysis and synthesis approach, we aimed to advance understanding of how increased drought incidence will affect this ecologically and economically important insect group and to characterize any potential underlying mechanisms. We used qualitative and quantitative synthesis techniques to determine whether drought stress has a negative, positive, or null effect on aphid fitness and examined these effects in relation to (a) aphid biology, (b) geographical region, and (c) host plant biology.Across all studies, aphid fitness is typically reduced under drought. Subgroup analysis detected no difference in relation to aphid biology, geographical region, or the aphid-plant combination, indicating the negative effect of drought on aphids is potentially universal. Furthermore, drought stress had a negative impact on plant vigor and increased plant concentrations of defensive chemicals, suggesting the observed response of aphids is associated with reduced plant vigor and increased chemical defense in drought-stressed plants.We propose a conceptual model to predict drought effects on aphid fitness in relation to plant vigor and defense to stimulate further research.
Competing Interests: None declared.
(© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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