The influence of drought stress on bird cherry-oat aphid (Rhopalosiphum padi(L.)) host-plant utilization, emigration, and feeding behavior: Implications for pathogen transmission in wheat

2016 ◽  
Author(s):  
Jessica Tarron Kansman
Keyword(s):  
Drought Stress ◽  
Feeding Behavior ◽  
Host Plant ◽  
Rhopalosiphum Padi ◽  
Pathogen Transmission ◽  
Plant Utilization

Effects of host plant drought stress on the performance of the bird cherry-oat aphid, Rhopalosiphum padi (L.): a mechanistic analysis

2003 ◽  
Vol 28 (6) ◽  
pp. 666-677 ◽  
Author(s):  
B. K. Hale ◽  
J. S. Bale ◽  
J. Pritchard ◽  
G. J. Masters ◽  
V. K. Brown
Keyword(s):  
Drought Stress ◽  
Host Plant ◽  
Rhopalosiphum Padi ◽  
Mechanistic Analysis

Induction by alkaloids and phenobarbital of Family 4 Cytochrome P450s in Drosophila : evidence for involvement in host plant utilization

1998 ◽  
Vol 259 (1) ◽  
pp. 54-59 ◽  
Author(s):  
P. B. Danielson ◽  
J. L. M. Foster ◽  
M. M. McMahill ◽  
M. K. Smith ◽  
J. C. Fogleman
Keyword(s):  
Host Plant ◽  
Cytochrome P450s ◽  
Plant Utilization

Host plant utilization in the comma butterfly: sources of variation and evolutionary implications

Oecologia ◽  
1994 ◽  
Vol 99 (1-2) ◽  
pp. 132-140 ◽  
Author(s):  
Niklas Janz ◽  
S�ren Nylin ◽  
Nina Wedell
Keyword(s):  
Host Plant ◽  
Plant Utilization ◽  
Sources Of Variation ◽  
Comma Butterfly

scholarly journals Arbuscular mycorrhizal symbiosis increases relative apoplastic water flow in roots of the host plant under both well-watered and drought stress conditions

2012 ◽  
Vol 109 (5) ◽  
pp. 1009-1017 ◽  
Author(s):  
Gloria Bárzana ◽  
Ricardo Aroca ◽  
José Antonio Paz ◽  
François Chaumont ◽  
Mari Carmen Martinez-Ballesta ◽  
...  
Keyword(s):  
Drought Stress ◽  
Host Plant ◽  
Water Flow ◽  
Arbuscular Mycorrhizal ◽  
Stress Conditions ◽  
Arbuscular Mycorrhizal Symbiosis ◽  
Mycorrhizal Symbiosis

Investigating the Movement Components of Host Preference in a Highly Mobile Insect Herbivore, Nephotettix cincticeps (Hemiptera: Cicadellidae)

2019 ◽  
Vol 49 (1) ◽  
pp. 115-122 ◽  
Author(s):  
Hannah L Gray ◽  
David A Andow ◽  
Keizi Kiritani
Keyword(s):  
Host Plant ◽  
Host Preference ◽  
Management Strategies ◽  
Pathogen Transmission ◽  
Host Plant Selection ◽  
Plant Selection ◽  
Relative Significance ◽  
Insect Management ◽  
Initial Attraction ◽  
Log Linear

Abstract Effective insect management strategies require a firm understanding of the factors determining host preference, particularly in highly mobile insect herbivores. Host preference studies commonly employ average or first position as a proxy for preference. Yet few studies have explored host preference in relation to transitory attraction and leaving rates, yet these are both components of host plant selection. We investigated the transitory dynamics of preference by the green rice leafhopper, Nephotettix cincticeps (Uhler) (Hemiptera: Cicadellidae) by conducting experiments on groups of females, males, or mixed-sex leafhoppers, and recording their position over time between low-N and normal-N rice plants. Utilizing a log-linear model and variants of a biostatistical model we used these positional data to extract attraction, leaving and tenure rates to better understand the process of host-plant selection. We found a general preference for normal-N over low-N plants at equilibrium. However, between sexes there was variation in the relative significance of attraction or leaving rates on that preference. Female leafhoppers were more attracted to host plants with higher nitrogen content. Male leafhoppers were less discriminate in their initial attraction to hosts but left low-N hosts at a faster rate. Whereas estimated tenure times on both normal- and low-N plants exceeded transmission times for the leafhopper-transmitted rice dwarf virus, longer tenure on normal-N plants likely increases the likelihood of virus acquisition from these plants. Our findings support previous recommendations that growers can mitigate the risks of leafhopper damage and pathogen transmission by optimizing their application of nitrogenous fertilizers.

scholarly journals Impact of Host Plant Species and Whitefly Species on Feeding Behavior of Bemisia tabaci

2019 ◽  
Vol 10 ◽  
Author(s):  
Milan Milenovic ◽  
Everlyne Nafula Wosula ◽  
Carmelo Rapisarda ◽  
James Peter Legg
Keyword(s):  
Feeding Behavior ◽  
Host Plant ◽  
Plant Species ◽  
Bemisia Tabaci ◽  
Host Plant Species

scholarly journals Dark Septate Endophyte Improves Drought Tolerance of Ormosia hosiei Hemsley & E. H. Wilson by Modulating Root Morphology, Ultrastructure, and the Ratio of Root Hormones

Forests ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 830 ◽  
Author(s):  
Yan Liu ◽  
Xiaoli Wei
Keyword(s):  
Water Stress ◽  
Drought Stress ◽  
Host Plant ◽  
Drought Resistance ◽  
Root Morphology ◽  
Stress Conditions ◽  
Root Tip ◽  
Root Weight ◽  
Root Cells ◽  
Water Capacity

Dark septate endophytes (DSEs) are known to help host plants survive drought stress; however, how DSEs enhance host plant drought resistance under water stress conditions remains unclear. The objective of this study was to inoculate Ormosia hosiei seedlings with a DSE strain (Acrocalymma vagum) to investigate the effects of DSE inoculation on root morphology, ultrastructure, and the endogenous hormone content under drought stress conditions and to elucidate the drought resistance mechanism involved in the DSE–host-plant association. The inoculated seedlings were grown under three different soil water conditions (well watered—75% field water capacity, moderate water—55% field water capacity, or low water—35% field water capacity) for 114 days. Fresh root weight, root volume, root surface area, root fork, and root tip number were significantly higher in inoculated seedlings than in noninoculated seedlings. Furthermore, the root architecture of the inoculated seedlings changed from herringbone branching to dichotomous branching. Mitochondria and other organelles in root cells of inoculated seedlings remained largely undamaged under water stress, whereas organelles in root cells of noninoculated seedlings were severely damaged. The abscisic acid (ABA) and indole-3-acetic acid (IAA) content and IAA/ABA ratio of inoculated seedlings were significantly higher than those of noninoculated seedlings, whereas the content of gibberellic acid (GA) and the ratios of GA/ABA, zeatin riboside (ZR)/ABA, and ZR/IAA in inoculated seedlings were lower than those of noninoculated seedlings. DSE inoculation could help plants adapt to a drought stress environment by altering root morphology, reducing ultrastructural damage, and influencing the balance of endogenous hormones, which could be of great significance for the cultivation and preservation of the O. hosiei tree.

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