Climate change, transgenic corn adoption and field-evolved resistance in corn earworm
Increased temperature anomaly during the twenty-first century coincides with the proliferation of transgenic crops containing the bacterium Bacillus thuringiensis (Berliner) (Bt) to express insecticidal Cry proteins. Increasing temperatures profoundly affect insect life histories and agricultural pe...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
The Royal Society
2017-01-01
|
| Series: | Royal Society Open Science |
| Subjects: | |
| Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170210 |
| _version_ | 1819173207613112320 |
|---|---|
| author | P. Dilip Venugopal Galen P. Dively |
| author_facet | P. Dilip Venugopal Galen P. Dively |
| author_sort | P. Dilip Venugopal |
| collection | DOAJ |
| description | Increased temperature anomaly during the twenty-first century coincides with the proliferation of transgenic crops containing the bacterium Bacillus thuringiensis (Berliner) (Bt) to express insecticidal Cry proteins. Increasing temperatures profoundly affect insect life histories and agricultural pest management. However, the implications of climate change on Bt crop–pest interactions and insect resistance to Bt crops remains unexamined. We analysed the relationship of temperature anomaly and Bt adoption with field-evolved resistance to Cry1Ab Bt sweet corn in a major pest, Helicoverpa zea (Boddie). Increased Bt adoption during 1996–2016 suppressed H. zea populations, but increased temperature anomaly buffers population reduction. Temperature anomaly and its interaction with elevated selection pressure from high Bt acreage probably accelerated the Bt-resistance development. Helicoverpa zea damage to corn ears, kernel area consumed, mean instars and proportion of late instars in Bt varieties increased with Bt adoption and temperature anomaly, through additive or interactive effects. Risk of Bt-resistant H. zea spreading is high given extensive Bt adoption, and the expected increase in overwintering and migration. Our study highlights the challenges posed by climate change for Bt biotechnology-based agricultural pest management, and the need to incorporate evolutionary processes affected by climate change into Bt-resistance management programmes. |
| first_indexed | 2024-12-22T20:19:25Z |
| format | Article |
| id | doaj.art-42846159ea7644be87c8fda10e48459c |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-12-22T20:19:25Z |
| publishDate | 2017-01-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-42846159ea7644be87c8fda10e48459c2022-12-21T18:13:53ZengThe Royal SocietyRoyal Society Open Science2054-57032017-01-014610.1098/rsos.170210170210Climate change, transgenic corn adoption and field-evolved resistance in corn earwormP. Dilip VenugopalGalen P. DivelyIncreased temperature anomaly during the twenty-first century coincides with the proliferation of transgenic crops containing the bacterium Bacillus thuringiensis (Berliner) (Bt) to express insecticidal Cry proteins. Increasing temperatures profoundly affect insect life histories and agricultural pest management. However, the implications of climate change on Bt crop–pest interactions and insect resistance to Bt crops remains unexamined. We analysed the relationship of temperature anomaly and Bt adoption with field-evolved resistance to Cry1Ab Bt sweet corn in a major pest, Helicoverpa zea (Boddie). Increased Bt adoption during 1996–2016 suppressed H. zea populations, but increased temperature anomaly buffers population reduction. Temperature anomaly and its interaction with elevated selection pressure from high Bt acreage probably accelerated the Bt-resistance development. Helicoverpa zea damage to corn ears, kernel area consumed, mean instars and proportion of late instars in Bt varieties increased with Bt adoption and temperature anomaly, through additive or interactive effects. Risk of Bt-resistant H. zea spreading is high given extensive Bt adoption, and the expected increase in overwintering and migration. Our study highlights the challenges posed by climate change for Bt biotechnology-based agricultural pest management, and the need to incorporate evolutionary processes affected by climate change into Bt-resistance management programmes.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170210climate change and phenologytemperature anomalytransgenic cropshelicoverpa zeacrop–pest interactionsinsect resistance |
| spellingShingle | P. Dilip Venugopal Galen P. Dively Climate change, transgenic corn adoption and field-evolved resistance in corn earworm Royal Society Open Science climate change and phenology temperature anomaly transgenic crops helicoverpa zea crop–pest interactions insect resistance |
| title | Climate change, transgenic corn adoption and field-evolved resistance in corn earworm |
| title_full | Climate change, transgenic corn adoption and field-evolved resistance in corn earworm |
| title_fullStr | Climate change, transgenic corn adoption and field-evolved resistance in corn earworm |
| title_full_unstemmed | Climate change, transgenic corn adoption and field-evolved resistance in corn earworm |
| title_short | Climate change, transgenic corn adoption and field-evolved resistance in corn earworm |
| title_sort | climate change transgenic corn adoption and field evolved resistance in corn earworm |
| topic | climate change and phenology temperature anomaly transgenic crops helicoverpa zea crop–pest interactions insect resistance |
| url | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170210 |
| work_keys_str_mv | AT pdilipvenugopal climatechangetransgeniccornadoptionandfieldevolvedresistanceincornearworm AT galenpdively climatechangetransgeniccornadoptionandfieldevolvedresistanceincornearworm |