scholarly journals The green peach aphid Myzus persicae perform better on pre-infested Chinese cabbage Brassica pekinensis by enhancing host plant nutritional quality

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
He-He Cao ◽  
Hui-Ru Liu ◽  
Zhan-Feng Zhang ◽  
Tong-Xian Liu
Keyword(s):  
Chinese Cabbage ◽  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Marker Genes ◽  
Plant Leaves ◽  
Resistance Level ◽  
Aphid Infestation ◽  
Phloem Sap ◽  
Brassica Pekinensis ◽  
Plant Nutritional Quality

Abstract The green peach aphid, Myzus persicae Sulzer, is a notorious pest on vegetables, which often aggregates in high densities on crop leaves. In this study, we investigated whether M. persicae could suppress the resistance level of Chinese cabbage Brassica pekinensis. M. persicae performed better in terms of weight gain (~33% increase) and population growth (~110% increase) when feeding on previously infested (pre-infested) Chinese cabbage compared with those on non-infested plants. However, when given a choice, 64% of the aphids preferred to settle on non-infested leaves, while 29% of aphids chose pre-infested leaves that had a 2.9 times higher concentration of glucosinolates. Aphid feeding significantly enhanced the amino acid:sugar ratio of phloem sap and the absolute amino acid concentration in plant leaves. Aphid infestation significantly increased the expression levels of salicylic acid (SA) marker genes, while it had marginal effects on the expression of jasmonate marker genes. Exogenously applied SA or methyl jasmonate had no significant effects on M. persicae performance, although these chemicals increased glucosinolates concentration in plant leaves. M. persicae infestation increase amino acid:sugar ratio and activate plant defenses, but aphid performed better on pre-infested plants, suggesting that both nutrition and toxics should be considered in insect-plant interaction.

Variation in Myzus persicae (Sulz.) (Hemiptera, Aphididae) reared on different host-plants

1973 ◽  
Vol 62 (4) ◽  
pp. 549-556 ◽  
Author(s):  
H. J. B. Lowe
Keyword(s):  
Young Adults ◽  
Sugar Beet ◽  
Chinese Cabbage ◽  
Lactuca Sativa ◽  
Myzus Persicae ◽  
Host Species ◽  
Host Plants ◽  
Broad Bean ◽  
Senecio Vulgaris ◽  
Brassica Pekinensis

Apterous adult Myzus persicae (Sulz.) of a glasshouse strain differed greatly in their ability to colonise sugar-beet according to the plant on which they and their forebears were cultured. Those from Chinese cabbage (Brassica pekinensis) settled least readily on beet, whilst aphids from broad beans (Vicia faba) produced larger populations than those cultured on sugar-beet. When reared wholly on groundsel (Senecio vulgaris) young adults differed in their ability to colonise Chinese cabbage, sugar-beet and broad bean according to their parents' culture host species, and these differences were detected in a second generation reared wholly on groundsel. The responses of clones isolated from cultures maintained continuously on Chinese cabbage and broad bean were similar, showing that the effect was caused by the aphids' host-plant experience, and was not due to fixed, heritable characters of the sub-cultures. Some, but not all clones of M. persicae collected from the field showed enhanced colonising ability after culture on broad bean as compared with Chinese cabbage. This was apparent on sugar-beet and lettuce (Lactuca sativa). These effects of former hosts on the ability of M. persicae to colonise plants may be important both in work on resistance to aphids and in the epidemiology of aphid-borne diseases.

scholarly journals Greenhouse Screening of Capsicum Accessions for Resistance to Green Peach Aphid (Myzus persicae)

HortScience ◽  
2004 ◽  
Vol 39 (6) ◽  
pp. 1332-1335 ◽  
Author(s):  
James D. Frantz ◽  
Jeffrey Gardner ◽  
Michael P. Hoffmann ◽  
Molly M. Jahn
Keyword(s):  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Resistance Mechanism ◽  
Cotton Aphid ◽  
Sources Of Resistance ◽  
Leaf Pubescence ◽  
Aphid Infestation ◽  
Greenhouse Screening ◽  
Damage Tolerant ◽  
Considerable Damage

A greenhouse screen for resistance to green peach aphid (GPA) [Myzus persicae (Sulzer)] was done using 50 pepper (Capsicum spp.) accessions. There were significant differences among accessions for damage rating, number of aphids per plant and number of aphids per leaf. Leaf pubescence, the basis of a reported nonpreference resistance mechanism to green peach aphid infestation, failed to protect pepper accessions from GPA colonization and damage. Sources of resistance and tolerance to cotton aphid [Aphis gossypi (Glover)] supported high levels of green peach aphid infestation and exhibited considerable damage. Although no accessions provided strong resistance to aphid colonization evident by significantly reduced numbers of aphids, several commercial varieties and sources of virus resistance exhibited strong tolerance to GPA, evident as reduced damage. Tolerant varieties could be an important component in integrated pest management of green peach aphid.

scholarly journals Direct and Indirect Effect of Myzus Persicae Infestation on Buildup of Whitefly (Bemisia tabaci) in Tomato Crop under Laboratory Conditions

2020 ◽  
pp. 1-8
Author(s):  
Khadija Javed ◽  
Humayun Javed ◽  
Dewen Qiu
Keyword(s):  
Bemisia Tabaci ◽  
Indirect Effect ◽  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Tomato Crop ◽  
Aphid Infestation ◽  
Tomato Plants ◽  
Factors Affecting ◽  
Whitefly Population ◽  
Negative Effect

The tomato crop is affected by a number of pests in the world as well as in China and Pakistan. The whitefly (Bemisia tabaci) is considered a very serious and damaging pest of tomato crop along with many other vegetables and field crops. Population buildup of whitefly is affected by many factors, including biotic and a biotic. One of the factors affecting the whitefly population in the tomato crop is green peach aphid (Myzus persicae) infestation before the whitefly attack. This project designed to note the direct and indirect effect of Myzus persicae infestation on the population setup of whitefly in tomato crops. The results revealed that whitefly prefers tomato plants without having aphids on them (choice) and can be settled on the tomato plants also when there are aphids present (no choice). The period after aphid infestation have a negative effect on the whitefly population, and the density of aphids/leaf has also influenced the whitefly population.

scholarly journals Nutrition Outweighs Defense: Myzus Persicae (Green Peach Aphid) Prefers and Performs Better on Young Leaves of Cabbage

2017 ◽  
Author(s):  
He-He Cao ◽  
Zhan-Feng Zhanga ◽  
Xiao-Feng Wang ◽  
Tong-Xian Liu
Keyword(s):  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Sucrose Solution ◽  
Molar Ratio ◽  
Future Research ◽  
Feeding Time ◽  
Leaf Ontogeny ◽  
Phloem Sap ◽  
Young Leaves ◽  
Phloem Feeding

AbstractPlant leaves of different ages differ in nutrition and toxic metabolites and thus exhibit various resistance levels against insect herbivores. However, little is known about the relationship between leaf ontogeny and plant resistance against phloem-feeding insects. In this study, we found that the green peach aphid, Myzus persicae Sulzer, preferred to settle on young cabbage leaves (Brassica oleracea L. var. capitata) rather than mature or old leaves, although young leaves contained the highest concentration of glucosinolates. Furthermore, aphids feeding on young leaves had higher levels of glucosinolates in their bodies, but aphids performed better on young leaves in terms of body weight and population growth. The concentration of glutamine in young leaves was the highest, which stimulated aphids feeding when added to the sucrose solution. Phloem sap of young leaves had higher amino acid:sucrose molar ratio than mature leaves, and aphids feeding on young leaves showed two times longer phloem feeding time and five times more dry honeydew excretion than on other leaves. These results indicate that aphids acquired the highest amount of nutrition and defensive metabolites when feeding on young cabbage leaves that are strong natural plant sinks. The higher phloem sap availability of young leaves likely contributes to the attractiveness and suitability for aphids and may compensate the negative effects of glucosinolates on aphids. According to these findings, we propose that phloem sap availability influenced by leaf ontogeny and source-sink status play a significant role in plant-aphid interaction, which desires more attention in future research.

scholarly journals Neonicotinoid’s resistance monitoring, diagnostic mechanisms and cytochrome P450 expression in green peach aphid [Myzus persicae (Sulzer) (Hemiptera: Aphididae)]

PLoS ONE ◽  
2022 ◽  
Vol 17 (1) ◽  
pp. e0261090
Author(s):  
Muhammad Umair Sial ◽  
Khalid Mehmood ◽  
Shafqat Saeed ◽  
Mureed Husain ◽  
Khawaja Ghulam Rasool ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Single Point ◽  
Single Point Mutation ◽  
Transcriptional Level ◽  
Cytochrome P450 Enzymes ◽  
Metabolic Resistance ◽  
Resistance Level ◽  
P450 Gene

Green peach aphid [Myzus persicae (Sulzer) (Hemiptera: Aphididae)] is a significant pest with a known history of insecticide resistance. Neonicotinoids could manage this pest; however, their frequent use led to the evolution of resistance in field populations of M. persicae. Toxicity data for neonicotinoid insecticides synergized with pipernyl butoxide (PBO) in a field population (FP) were collected and compared to a laboratory susceptible clone (SC) of aphids. The enhanced expression of metabolic resistance-related cytochrome P450 gene CYP6CY3 and an arginine-threonine substitution were detected in FP, causing a single point mutation (R81T) at β1 subunit of nicotinic acetylcholine receptor (nAChR) within D loop. High level of resistance to imidacloprid was developed in FP with 101-fold resistance ratio and moderate resistance level (10.9-fold) to acetamiprid. The results of PBO synergized bioassay suggested that cytochrome P450 enzymes were involved in the resistance to neonicotinoids. The mRNA transcriptional level of CYP6CY3 gene was significantly higher (3.74 fold) in FP compared to SC. The R81T mutation associated with neonicotinoid resistance had 26% resistant allele frequency in FP. Both P450 enzymes and R81T mutation of nAChR were found in field-evolved neonicotinoid resistance. It is concluded that field-evolved resistance in green peach aphid could be managed by using appropriate synergists such as PBO.

Green peach aphid and potato leafroll virus: transmission and control

2020 ◽  
Author(s):  
R.A. Bagrov ◽  
◽  
V.I. Leunov
Keyword(s):  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Virus Transmission ◽  
Potato Leafroll Virus ◽  
Factors Affecting ◽  
Potato Viruses ◽  
Tuber Necrosis ◽  
Aphid Vectors ◽  
Leafroll Virus ◽  
And Control

The mechanisms of transmission of potato viruses from plants to aphid vectors and from aphids to uninfected plants are described, including the example of the green peach aphid (Myzus persicae, GPA). Factors affecting the spreading of tuber necrosis and its manifestation on plants infected with potato leafroll virus (PLRV) are discussed. Recommendations for PLRV and GPA control in the field are given.

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