Weed presence altered biotic stress and light signaling in maize even when weeds were removed early in the critical weed‐free period
Abstract Weed presence early in the life cycle of maize (typically, from emergence through the 8 to 12 leaf growth stage) can reduce crop growth and yield and is known as the critical weed‐free period (CWFP). Even if weeds are removed during or just after the CWFP, crop growth and yield often are no...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-04-01
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| Series: | Plant Direct |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/pld3.57 |
| _version_ | 1819290606639251456 |
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| author | David P. Horvath Stephanie Bruggeman Janet Moriles‐Miller James V. Anderson Munevver Dogramaci Brian E. Scheffler Alvaro G. Hernandez Michael E. Foley Sharon Clay |
| author_facet | David P. Horvath Stephanie Bruggeman Janet Moriles‐Miller James V. Anderson Munevver Dogramaci Brian E. Scheffler Alvaro G. Hernandez Michael E. Foley Sharon Clay |
| author_sort | David P. Horvath |
| collection | DOAJ |
| description | Abstract Weed presence early in the life cycle of maize (typically, from emergence through the 8 to 12 leaf growth stage) can reduce crop growth and yield and is known as the critical weed‐free period (CWFP). Even if weeds are removed during or just after the CWFP, crop growth and yield often are not recoverable. We compared transcriptome responses of field‐grown hybrid maize at V8 in two consecutive years among plants grown under weed‐free and two weed‐stressed conditions (weeds removed at V4 or present through V8) using RNAseq analysis techniques. Compared with weed‐free plant responses, physiological differences at V8 were identified in all weed‐stressed plants and were most often associated with altered photosynthetic processes, hormone signaling, nitrogen use and transport, and biotic stress responses. Even when weeds were removed at V4 and tissues sampled at V8, carbon: nitrogen supply imbalance, salicylic acid signals, and growth responses differed between the weed‐stressed and weed‐free plants. These underlying processes and a small number of developmentally important genes are potential targets for decreasing the maize response to weed pressure. Expression differences of several novel, long noncoding RNAs resulting from exposure of maize to weeds during the CWFP were also observed and could open new avenues for investigation into the function of these transcription units. |
| first_indexed | 2024-12-24T03:25:25Z |
| format | Article |
| id | doaj.art-5c539e3f4bc34c30a2b70a4315da8eb6 |
| institution | Directory Open Access Journal |
| issn | 2475-4455 |
| language | English |
| last_indexed | 2024-12-24T03:25:25Z |
| publishDate | 2018-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Plant Direct |
| spelling | doaj.art-5c539e3f4bc34c30a2b70a4315da8eb62022-12-21T17:17:21ZengWileyPlant Direct2475-44552018-04-0124n/an/a10.1002/pld3.57Weed presence altered biotic stress and light signaling in maize even when weeds were removed early in the critical weed‐free periodDavid P. Horvath0Stephanie Bruggeman1Janet Moriles‐Miller2James V. Anderson3Munevver Dogramaci4Brian E. Scheffler5Alvaro G. Hernandez6Michael E. Foley7Sharon Clay8Sunflower and Plant Biology Research Unit USDA/ARS/RRVARC Fargo North DakotaPlant Science Department South Dakota State University Brookings South DakotaPlant Science Department South Dakota State University Brookings South DakotaSunflower and Plant Biology Research Unit USDA/ARS/RRVARC Fargo North DakotaUniversity of South Dakota Sanford School of Medicine Internal Medicine Department Sioux Falls South DakotaGenomics and Bioinformatics Research Unit USDA/ARS Stoneville MississippiRoy J. Carver Biotechnology Center Urbana IllinoisSunflower and Plant Biology Research Unit USDA/ARS/RRVARC Fargo North DakotaPlant Science Department South Dakota State University Brookings South DakotaAbstract Weed presence early in the life cycle of maize (typically, from emergence through the 8 to 12 leaf growth stage) can reduce crop growth and yield and is known as the critical weed‐free period (CWFP). Even if weeds are removed during or just after the CWFP, crop growth and yield often are not recoverable. We compared transcriptome responses of field‐grown hybrid maize at V8 in two consecutive years among plants grown under weed‐free and two weed‐stressed conditions (weeds removed at V4 or present through V8) using RNAseq analysis techniques. Compared with weed‐free plant responses, physiological differences at V8 were identified in all weed‐stressed plants and were most often associated with altered photosynthetic processes, hormone signaling, nitrogen use and transport, and biotic stress responses. Even when weeds were removed at V4 and tissues sampled at V8, carbon: nitrogen supply imbalance, salicylic acid signals, and growth responses differed between the weed‐stressed and weed‐free plants. These underlying processes and a small number of developmentally important genes are potential targets for decreasing the maize response to weed pressure. Expression differences of several novel, long noncoding RNAs resulting from exposure of maize to weeds during the CWFP were also observed and could open new avenues for investigation into the function of these transcription units.https://doi.org/10.1002/pld3.57maizeplant–plant interactiontranscriptomeweeds |
| spellingShingle | David P. Horvath Stephanie Bruggeman Janet Moriles‐Miller James V. Anderson Munevver Dogramaci Brian E. Scheffler Alvaro G. Hernandez Michael E. Foley Sharon Clay Weed presence altered biotic stress and light signaling in maize even when weeds were removed early in the critical weed‐free period Plant Direct maize plant–plant interaction transcriptome weeds |
| title | Weed presence altered biotic stress and light signaling in maize even when weeds were removed early in the critical weed‐free period |
| title_full | Weed presence altered biotic stress and light signaling in maize even when weeds were removed early in the critical weed‐free period |
| title_fullStr | Weed presence altered biotic stress and light signaling in maize even when weeds were removed early in the critical weed‐free period |
| title_full_unstemmed | Weed presence altered biotic stress and light signaling in maize even when weeds were removed early in the critical weed‐free period |
| title_short | Weed presence altered biotic stress and light signaling in maize even when weeds were removed early in the critical weed‐free period |
| title_sort | weed presence altered biotic stress and light signaling in maize even when weeds were removed early in the critical weed free period |
| topic | maize plant–plant interaction transcriptome weeds |
| url | https://doi.org/10.1002/pld3.57 |
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