DOI: 10.1016/j.foreco.2015.05.037
Scopus记录号: 2-s2.0-84937972065
论文题名: Tree genotype modulates the effects of water deficit on a plant-manipulating aphid
作者: Dardeau F. ; Berthier A. ; Feinard-Duranceau M. ; Brignolas F. ; Laurans F. ; Lieutier F. ; Sallé A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 353 起始页码: 118
结束页码: 125
语种: 英语
英文关键词: Drought
; Gall
; Lignification
; Nutrient sinks
; Phloeomyzus passerinii
; Populus
Scopus关键词: Animals
; Drought
; Forestry
; Irrigation
; Metabolism
; Gall
; Lignification
; Nutrient sink
; Phloeomyzus passerinii
; Populus
; Plants (botany)
; aphid
; clone
; colony
; deciduous tree
; drought
; gall insect
; genotype
; growth rate
; histology
; host plant
; infectivity
; irrigation system
; leaf
; lignin
; metabolism
; nutrient availability
; pest resistance
; plant-herbivore interaction
; water availability
; water content
; Aphididae
; Hexapoda
; Phloeomyzus passerinii
; Populus
英文摘要: Successful plant manipulation by herbivores requires a reconfiguration of the primary and secondary metabolisms of the host-plant. Water deficit is generally predicted to negatively affect the development of gall-inducing insects, by impairing their ability to remodel the primary metabolism of their host. We assessed whether host genotype could modulate water deficit effects on a gall-inducing aphid, Phloeomyzus passerinii, developing on poplars, which are known to be among the most susceptible trees to water deficit. Stem-cuttings of two poplar genotypes, with a different resistance level to P. passerinii, were grown under three irrigation treatments, and subsequently infested with the same aphid clone. Plant growth parameters and aphid colonies development were recorded, and the development and organization of the pseudogall induced by the aphid was observed using histological investigations. The three irrigation treatments resulted in three levels of water deficit. Mean predawn leaf water potential reached -0.10, -0.49 and -0.75. MPa in the optimal, intermediate and low irrigation treatments respectively. In both genotypes, growth, architecture and photosynthesis were similarly affected. The severe water deficit reduced the development of aphids on both genotypes, which is in agreement with the general prediction for gall-inducing insects. Nonetheless, while the intermediate water deficit did not affect the development of aphids on the susceptible genotype, it enhanced their development on the resistant one. This latter observation contradicts the prediction for gall-inducing insects, but is in agreement with the plant stress hypothesis for sucking insects. The size of the pseudogall induced by the aphids in the bark of their host progressively diminished when water deficit increased. Lignification, believed to be an important component of poplar resistance to P. passerinii, also progressively decreased with water deficit. The involvement of physiological and architecture modifications due to water deficit on the development of aphids is discussed. The results demonstrate that host genotype can modulate water deficit effects on the development of a galling aphid, thereby compromising predictions on the outcome of droughts on stand resistance to plant-manipulating herbivores. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65360
Appears in Collections: 影响、适应和脆弱性
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作者单位: Université d'Orléans, UPRES EA 1207, Laboratoire de Biologie des Ligneux et des Grandes Cultures, BP 6759, Orléans, France; INRA, USC1328 Arbres et Réponses aux Contraintes Hydriques et Environnementales, BP 6759, Orléans, France; INRA, UR0588 Amélioration, Génétique et Physiologie Forestières, Orléans, France
Recommended Citation:
Dardeau F.,Berthier A.,Feinard-Duranceau M.,et al. Tree genotype modulates the effects of water deficit on a plant-manipulating aphid[J]. Forest Ecology and Management,2015-01-01,353