ArticleJournal of experimental botany2014
Transgenic expression of a functional fragment of harpin protein Hpa1 in wheat induces the phloem-based defence against English grain aphid.
Article in Journal of experimental botany, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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Who cites it
26 citing papers in PubMed, 58 citations in OpenAlex.
- Pest resistance function of BtACO8 gene from Balsas teosinte.Transgenic research · 2026Article
- Two Aquaporins Mitigate Growth-Defence Trade-Offs by Facilitating COPlant biotechnology journal · 2026Article
- Genome-wide dissection ofHorticulture research · 2026Article
- The elicitor VP2 from Verticillium dahliae triggers defence response in cotton.Plant biotechnology journal · 2024Article
- Article
- Tissue-Specific Transcriptomes in the Secondary Cell Wall Provide an Understanding of Stem Growth Enhancement inBiology · 2023Article
- Importin β1 Mediates Nuclear Entry of EIN2C to Confer the Phloem-Based Defense against Aphids.International journal of molecular sciences · 2023Article
- Biotechnologically Engineered Plants.Biology · 2023Review
- Two salivary proteins Sm10 and SmC002 from grain aphidFrontiers in plant science · 2023Article
- Effects of Harpin and Flg22 on Growth Enhancement and Pathogen Defense inPlants (Basel, Switzerland) · 2022Article
- Response of hrpZEnvironmental science and pollution research international · 2021Article
- OFrontiers in plant science · 2020Article
- Introduction of the harpinTransgenic research · 2019Article
- Genetic Modification for Wheat Improvement: From Transgenesis to Genome Editing.BioMed research international · 2019Review
- Plant Aquaporins in Infection by and Immunity Against Pathogens - A Critical Review.Frontiers in plant science · 2019Article
- Reduced phloem uptake of Myzus persicae on an aphid resistant pepper accession.BMC plant biology · 2018Article
- Over-expression of the Pseudomonas syringae harpin-encoding gene hrpZm confers enhanced tolerance to Phytophthora root and stem rot in transgenic soybean.Transgenic research · 2018Article
- Article
- Overexpression of SSBFrontiers in plant science · 2018Article
- The signal peptide-like segment of hpaXm is required for its association to the cell wall in transgenic tobacco plants.PloS one · 2017Article
Corrections and comments
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The harpin protein Hpa1 has multiple beneficial effects in plants, promoting plant growth and development, increasing crop yield, and inducing resistance to pathogens and insect pests. For these effects, the 10-40 residue fragment (Hpa1₁₀₋₄₂) isolated from the Hpa1 sequence is 1.3- to 7.5-fold more effective than the full-length protein. Here it is reported that the expression of Hpa1₁₀₋₄₂ under the direction of an insect-induced promoter induces the phloem-based defence to English grain aphid, a dominant species of wheat aphids. The expression of Hpa1₁₀₋₄₂ was found to compromise the colonization preference of aphids on the plant and further inhibit aphid reproduction in leaf colonies. In Hpa1₁₀₋₄₂-expressing wheat lines, moreover, aphid feeding from the phloem was repressed in correlation with the phloem-based defence. This defensive mechanism was shown as enhanced expression of wheat genes encoding phloem lectin proteins (PP2-A1 and PP2-A2) and β-1,3-glucan synthase-like enzymes (GSL2, GSL10, and GSL12). Both PP2-A and β-1,3-glucan formed high molecular mass polymers to block phloem sieve plate pores and therefore impede aphid feeding from the phloem. However, the phloem-based defence was impaired by treating plants with ethylene signalling inhibitors, suggesting the requirement for the ethylene signalling pathway. In addition, if Hpa1₁₀₋₄₂-expressing plants were subjected to attack by a small number of aphids, they newly acquired agriculturally beneficial characters, such as enhanced vegetative growth and increased tiller numbers and grain output values. These results suggest that the defensive and developmental roles of Hpa1₁₀₋₄₂ can be integrated into the germplasm of this agriculturally significant crop.
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