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Higher Fertilizer Inputs Increase Fitness Traits of Brown Planthopper in Rice

Rice (Oryza sativa L.) is the primary staple food source for more than half of the world’s population. In many developing countries, increased use of fertilizers is a response to increase demand for rice. In this study, we investigated the effects of three principal fertilizer components (nitrogen,...

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Autores principales: Rashid, M. M., Ahmed, N., Jahan, M., Islam, K. S., Nansen, C., Willers, J. L., Ali, M. P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498570/
https://www.ncbi.nlm.nih.gov/pubmed/28680158
http://dx.doi.org/10.1038/s41598-017-05023-7
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author Rashid, M. M.
Ahmed, N.
Jahan, M.
Islam, K. S.
Nansen, C.
Willers, J. L.
Ali, M. P.
author_facet Rashid, M. M.
Ahmed, N.
Jahan, M.
Islam, K. S.
Nansen, C.
Willers, J. L.
Ali, M. P.
author_sort Rashid, M. M.
collection PubMed
description Rice (Oryza sativa L.) is the primary staple food source for more than half of the world’s population. In many developing countries, increased use of fertilizers is a response to increase demand for rice. In this study, we investigated the effects of three principal fertilizer components (nitrogen, phosphorus and potassium) on the development of potted rice plants and their effects on fitness traits of the brown planthopper (BPH) [Nilaparvata lugens (Stål) (Homoptera: Delphacidae)], which is a major pest of rice in Bangladesh and elsewhere. Compared to low fertilizer inputs, high fertilizer treatments induced plant growth but also favored BPH development. The BPH had higher survival, developed faster, and the intrinsic rate of natural increase (r (m)) was higher on well-fertilized than under-fertilized plants. Among the fertilizer inputs, nitrogen had the strongest effect on the fitness traits of BPH. Furthermore, both the “Plant vigor hypothesis” and the “Plant stress hypothesis” were supported by the results, the former hypothesis more so than the latter. These hypotheses suggest that the most suitable/attractive hosts for insect herbivores are the most vigorous plants. Our findings emphasized that an exclusive focus on yield increases through only enhanced crop fertilization may have unforeseen, indirect, effects on crop susceptibility to pests, such as BPH.
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spelling pubmed-54985702017-07-10 Higher Fertilizer Inputs Increase Fitness Traits of Brown Planthopper in Rice Rashid, M. M. Ahmed, N. Jahan, M. Islam, K. S. Nansen, C. Willers, J. L. Ali, M. P. Sci Rep Article Rice (Oryza sativa L.) is the primary staple food source for more than half of the world’s population. In many developing countries, increased use of fertilizers is a response to increase demand for rice. In this study, we investigated the effects of three principal fertilizer components (nitrogen, phosphorus and potassium) on the development of potted rice plants and their effects on fitness traits of the brown planthopper (BPH) [Nilaparvata lugens (Stål) (Homoptera: Delphacidae)], which is a major pest of rice in Bangladesh and elsewhere. Compared to low fertilizer inputs, high fertilizer treatments induced plant growth but also favored BPH development. The BPH had higher survival, developed faster, and the intrinsic rate of natural increase (r (m)) was higher on well-fertilized than under-fertilized plants. Among the fertilizer inputs, nitrogen had the strongest effect on the fitness traits of BPH. Furthermore, both the “Plant vigor hypothesis” and the “Plant stress hypothesis” were supported by the results, the former hypothesis more so than the latter. These hypotheses suggest that the most suitable/attractive hosts for insect herbivores are the most vigorous plants. Our findings emphasized that an exclusive focus on yield increases through only enhanced crop fertilization may have unforeseen, indirect, effects on crop susceptibility to pests, such as BPH. Nature Publishing Group UK 2017-07-05 /pmc/articles/PMC5498570/ /pubmed/28680158 http://dx.doi.org/10.1038/s41598-017-05023-7 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Rashid, M. M.
Ahmed, N.
Jahan, M.
Islam, K. S.
Nansen, C.
Willers, J. L.
Ali, M. P.
Higher Fertilizer Inputs Increase Fitness Traits of Brown Planthopper in Rice
title Higher Fertilizer Inputs Increase Fitness Traits of Brown Planthopper in Rice
title_full Higher Fertilizer Inputs Increase Fitness Traits of Brown Planthopper in Rice
title_fullStr Higher Fertilizer Inputs Increase Fitness Traits of Brown Planthopper in Rice
title_full_unstemmed Higher Fertilizer Inputs Increase Fitness Traits of Brown Planthopper in Rice
title_short Higher Fertilizer Inputs Increase Fitness Traits of Brown Planthopper in Rice
title_sort higher fertilizer inputs increase fitness traits of brown planthopper in rice
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498570/
https://www.ncbi.nlm.nih.gov/pubmed/28680158
http://dx.doi.org/10.1038/s41598-017-05023-7
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