Effect of rootstocks on floral nectar composition in apple cultivars

Tóth, E. Nagy; Szabó, László; Botz, Lajos; Orosz-Kovács, Zs.

doi:10.1007/s00606-002-0274-1

Cited by 16 publications

(10 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Flowers may not only differ conspecifically in size and nutrient composition, but also in defensive chemical and physical properties (Herrera, ; Tsuchimatsu et al ., ). For apple flowers, this information is limited, although there is some evidence of differences among cultivars in flower size (Schneider et al ., ; Mody et al ., ), nectar composition (Toth et al ., ; Farkas et al ., ) and stigma characteristics (Farkas et al ., ). Larger flower buds might provide more resources to florivores and thereby enhance growth of the herbivore.…”

Section: Discussionmentioning

confidence: 98%

Plant genotype and the preference and performance of herbivores: cultivar affects apple resistance to the florivorous weevil Anthonomus pomorum

Mody

Collatz

Dorn

2015

Agri and Forest Entomology

View full text Add to dashboard Cite

1 Plant resistance strongly depends on plant characteristics that affect herbivore preference or performance. Different plant genotypes may express specific characteristics that lead to differential resistance to herbivores. Few studies have investigated these aspects for weevils, a particularly speciose taxon of insect herbivores, on fruit tree cultivars, which are vegetatively propagated. 2 We studied the influence of apple cultivar on preference and performance of a fruit tree herbivore, the flower-feeding apple blossom weevil Anthonomus pomorum (Coleoptera: Curculionidae). We quantified field infestation of five different apple genotypes by the weevil at different collection dates as measure of preference, as well as the mass and emergence time of weevils developing on these cultivars as measures of performance. 3 Infestation of apple flower buds by A. pomorum differed significantly between cultivars. The collection date affected the number of infested flowers in a cultivar-specific way. 4 Weevil mass differed significantly between apple cultivars. The average mass of weevils from Ariwa, the cultivar producing the heaviest weevils, was 40% higher than the mass of weevils from Rewena, the cultivar producing the lightest weevils. 5 Weevil emergence time from infested flowers differed significantly between cultivars.Weevils emerged earliest from cultivars Ariwa and Retina, at an intermediate time from Discovery and Florina, and latest from Rewena. 6 The present study demonstrates that preference and performance of florivores feeding on fruit trees can strongly differ between apple cultivars representing specific tree genotypes. These differences may directly and indirectly affect herbivore and antagonist populations and can be considered for pest management.

show abstract

Section: Discussionmentioning

confidence: 98%

Plant genotype and the preference and performance of herbivores: cultivar affects apple resistance to the florivorous weevil Anthonomus pomorum

Mody

Collatz

Dorn

2015

Agri and Forest Entomology

View full text Add to dashboard Cite

show abstract

“…In our expression data, we found that sorbitol utilization genes were induced on the flower stigma, then shut off when the cells were in the nectary area, and then expressed again in flower pedicels (Figure 3a,b ). The down‐regulation of sorbitol utilization genes in the flower base and nectary of the flower corresponds to an abundance of sucrose, but not sorbitol, in nectar (Tóth et al, 2003 ).…”

Section: Resultsmentioning

confidence: 99%

“…tion and sorbitol utilization genes were initially expressed on the stigma, but then expression decreased in the flower base and increased again in flower pedicels. Because of the sucrose levels in the nectary, which can range from 10% to 50% (Tóth et al, 2003), we hypothesize that E. amylovora has little need for sorbitol utilization genes in this environment and this is the reason for decreased expression. A correlation between sorbitol utilization and amylovoran production was previously observed (Geider et al, 1996;Wang et al, 2010) and our data support this observation.…”

Section: Rna-seq Expression Patterns Indicate That Amylovoran Produc-mentioning

confidence: 99%

Identification of novel virulence factors in Erwinia amylovora through temporal transcriptomic analysis of infected apple flowers under field conditions

Schachterle

Gdanetz

Pandya

et al. 2022

Molecular Plant Pathology

View full text Add to dashboard Cite

Progression of fire blight disease of apple and pear trees requires the causative agent Erwinia amylovora to coordinately express virulence traits and spread through host tissues (Piqué et al., 2015;Zhao et al., 2005). During infection, E. amylovora cells encounter several differing and hostile environments presented by specific host cell and tissue types that present distinct physical and biochemical challenges.Precise expression of genes involved in overcoming host defences and barriers under appropriate conditions leads to successful infection for E. amylovora.Multiple specific virulence factors are important for successful infection of apple and pear trees by E. amylovora (Kharadi et al.,

show abstract

“…Addison et al (2000) found pollen to be abundant on apple leaves very soon after the leaves had opened, and predatory mites can use windborne pollen released from cover crops in the field (Warburg et al, 2018). Nectar is also available in apple flowers during flowering in orchards (Toth et al, 2003). However, the effects of floral diets on A. bipunctata may decrease in the field due to various abiotic and biotic conditions (Brody, 1997;Adler et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

A Floral Diet Increases the Longevity of the Coccinellid Adalia bipunctata but Does Not Allow Molting or Reproduction

Sigsgaard

2019

Front. Ecol. Evol.

View full text Add to dashboard Cite

Adalia bipunctata L. (Coleoptera: Coccinellidae) is a generalist aphidophagous coccinellid and an important natural enemy in many agroecosystems including orchards. Coccinellid species have been observed to consume non-prey food like nectar and pollen, but the value of these foods for A. bipunctata is poorly known. The objective of this study was to determine the effect of different prey and non-prey diets on A. bipunctata larval development and adult longevity and fecundity. Larval development was studied on three prey diets: The aphids Dysaphis plantaginea and Myzus persicae and Lepidopteran eggs of Ephestia kuehniella; five flower diets: Matricaria chamomilla, Daucus carota, Fagopyrum esculentum, Anethum graveolens, and Sinapis alba; four pollen diets from three plant species: Typha angustifolia, Malus pumila (two varieties) and A. graveolens; and 1 M solutions of three sugars: glucose, fructose, and sucrose. Adult longevity and fecundity were tested on one prey diet (E. kuhniella eggs), three flower diets (F. esculentum, A. graveolens, and S. alba); the same four pollen diets and three sugar diets with larvae; and finally a mixed diet of sucrose and A. graveolens pollen. A water-only (starvation) control was used for both larval development and adult longevity and fecundity. Adult lipid content was assessed as a measure of how non-prey food affects the ladybeetles' nutritional status. Larvae did not develop beyond the first instar on any of the non-prey diets, but they lived more than twice as long as on F. esculentum and sugar diets than on water. Sugar and flower diets improved A. bipunctata adult longevity (71-92 days and 10-66 days, respectively) over a pure pollen diet (6-7 days). Fecundity was nil on all non-prey diets, and within a normal range on E. kuhniella eggs. The results suggest that pure floral diets do not support A. bipunctata molting or reproduction, but flowering plants can prolong A. bipunctata larval survival and adults longevity considerably when prey are absent. Adults on sugar diets had high lipid content, indicating that sugar feeding can improve overwintering survival. The findings could be used in agroecosystem design, such as the composition of flower strips for optimal functional diversity.

show abstract

Effect of rootstocks on floral nectar composition in apple cultivars

Cited by 16 publications

References 8 publications

Plant genotype and the preference and performance of herbivores: cultivar affects apple resistance to the florivorous weevil Anthonomus pomorum

Plant genotype and the preference and performance of herbivores: cultivar affects apple resistance to the florivorous weevil Anthonomus pomorum

Identification of novel virulence factors in Erwinia amylovora through temporal transcriptomic analysis of infected apple flowers under field conditions

A Floral Diet Increases the Longevity of the Coccinellid Adalia bipunctata but Does Not Allow Molting or Reproduction

Contact Info

Product

Resources

About