scholarly journals Transgenic expression of a functional fragment of harpin protein Hpa1 in wheat induces the phloem-based defence against English grain aphid

2014 ◽  
Vol 65 (6) ◽  
pp. 1439-1453 ◽  
Author(s):  
Maoqiang Fu ◽  
Manyu Xu ◽  
Ting Zhou ◽  
Defu Wang ◽  
Shan Tian ◽  
...  
Keyword(s):  
Transgenic Expression ◽  
Grain Aphid ◽  
Harpin Protein

scholarly journals Transgenic Expression of a Functional Fragment of Harpin Protein Hpa1 in Wheat Represses English Grain Aphid Infestation

2014 ◽  
Vol 13 (12) ◽  
pp. 2565-2576 ◽  
Author(s):  
Man-yu XU ◽  
Ting ZHOU ◽  
Yan-ying ZHAO ◽  
Jia-bao LI ◽  
Heng XU ◽  
...  
Keyword(s):  
Aphid Infestation ◽  
Transgenic Expression ◽  
Grain Aphid ◽  
Harpin Protein

scholarly journals Transgenic Expression of the Functional Fragment Hpa110-42 of the Harpin Protein Hpa1 Imparts Enhanced Resistance to Powdery Mildew in Wheat

Plant Disease ◽  
2014 ◽  
Vol 98 (4) ◽  
pp. 448-455 ◽  
Author(s):  
Defu Wang ◽  
Yajun Wang ◽  
Maoqiang Fu ◽  
Shuyuan Mu ◽  
Bing Han ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Bacterial Blight ◽  
Fungal Species ◽  
Effective Control ◽  
Transgenic Expression ◽  
Rice Bacterial Blight ◽  
Harpin Protein ◽  
Transgenic Lines ◽  
Bacterial Blight Pathogen ◽  
Pathogen Populations

Powdery mildew, one of devastating diseases of wheat worldwide, is caused by Erysiphe graminis f. sp. tritici, a fungal species with constant population changes, which often poses challenges in disease management with host resistance. Transgenic approaches that utilize broad-spectrum resistance may limit changes of pathogen populations and contribute to effective control of the disease. The harpin protein Hpa1, produced by the rice bacterial blight pathogen, can induce resistance to bacterial blight and blast in rice. The fragment comprising residues 10 through 42 of Hpa1, Hpa110-42, is reportedly three- to eightfold more effective than the full-length protein. This study evaluated the transgenic expression of the Hpa110-42 gene for resistance to powdery mildew in wheat caused by E. graminis f. sp. tritici. Nine Hpa110-42 transgenic wheat lines were generated. The genomic integration of Hpa110-42 was confirmed, and expression of the transgene was detected at different levels in the individual transgenic lines. Following inoculation with the E. graminis f. sp. tritici isolate Egt15 in the greenhouse, five transgenic lines had significantly higher levels of resistance to powdery mildew compared with nontransformed plants. Thus, transgenic expression of Hpa110-42 conferred resistance to one isolate of E. graminis f. sp. tritici in wheat in the greenhouse.

In-field prevalence of resistant grain aphid Sitobion avenae (Fabricius)

2020 ◽  
Vol 120B (1) ◽  
pp. 29
Author(s):  
Walsh ◽  
Schmidt ◽  
Williamson ◽  
Gaffney
Keyword(s):  
Sitobion Avenae ◽  
Grain Aphid

scholarly journals Microbial Toxins in Insect and Nematode Pest Biocontrol

2021 ◽  
Vol 22 (14) ◽  
pp. 7657
Author(s):  
Subbaiah Chalivendra
Keyword(s):  
Environmental Safety ◽  
Control Measures ◽  
Biocidal Activity ◽  
Transgenic Expression ◽  
Direct Injury ◽  
Pathogenic Microbes ◽  
Synthetic Pesticides ◽  
Invertebrate Pests ◽  
Livestock Diseases ◽  
Microbial Toxins

Invertebrate pests, such as insects and nematodes, not only cause or transmit human and livestock diseases but also impose serious crop losses by direct injury as well as vectoring pathogenic microbes. The damage is global but greater in developing countries, where human health and food security are more at risk. Although synthetic pesticides have been in use, biological control measures offer advantages via their biodegradability, environmental safety and precise targeting. This is amply demonstrated by the successful and widespread use of Bacillusthuringiensis to control mosquitos and many plant pests, the latter by the transgenic expression of insecticidal proteins from B. thuringiensis in crop plants. Here, I discuss the prospects of using bacterial and fungal toxins for pest control, including the molecular basis of their biocidal activity.

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