Root hair phenotypes influence nitrogen acquisition in maize
Background and Aims: The utility of root hairs for nitrogen (N) acquisition is poorly understood. Methods: We explored the utility of root hairs for N acquisition in the functional-structural model SimRoot and with maize genotypes with variable root hair length (RHL) in greenhouse and field environm...
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th-mahidol.755382022-08-04T14:54:25Z Root hair phenotypes influence nitrogen acquisition in maize Patompong Saengwilai Christopher Strock Harini Rangarajan Joseph Chimungu Jirawat Salungyu Jonathan P. Lynch Thailand Ministry of Education Mahidol University Pennsylvania State University Agricultural and Biological Sciences Background and Aims: The utility of root hairs for nitrogen (N) acquisition is poorly understood. Methods: We explored the utility of root hairs for N acquisition in the functional-structural model SimRoot and with maize genotypes with variable root hair length (RHL) in greenhouse and field environments. Key Results: Simulation results indicate that long, dense root hairs can improve N acquisition under varying N availability. In the greenhouse, ammonium availability had no effect on RHL and low nitrate availability increased RHL, while in the field low N reduced RHL. Longer RHL was associated with 216 % increase in biomass and 237 % increase in plant N content under low-N conditions in the greenhouse and a 250 % increase in biomass and 200 % increase in plant N content in the field compared with short-RHL phenotypes. In a low-N field environment, genotypes with long RHL had 267 % greater yield than those with short RHL. We speculate that long root hairs improve N capture by increased root surface area and expanded soil exploration beyond the N depletion zone surrounding the root surface. Conclusions: We conclude that root hairs play an important role in N acquisition. We suggest that root hairs merit consideration as a breeding target for improved N acquisition in maize and other crops. 2022-08-04T07:54:25Z 2022-08-04T07:54:25Z 2021-11-09 Article Annals of Botany. Vol.128, No.7 (2021), 849-858 10.1093/aob/mcab104 10958290 03057364 2-s2.0-85121139352 https://repository.li.mahidol.ac.th/handle/123456789/75538 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85121139352&origin=inward |
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Agricultural and Biological Sciences Patompong Saengwilai Christopher Strock Harini Rangarajan Joseph Chimungu Jirawat Salungyu Jonathan P. Lynch Root hair phenotypes influence nitrogen acquisition in maize |
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Background and Aims: The utility of root hairs for nitrogen (N) acquisition is poorly understood. Methods: We explored the utility of root hairs for N acquisition in the functional-structural model SimRoot and with maize genotypes with variable root hair length (RHL) in greenhouse and field environments. Key Results: Simulation results indicate that long, dense root hairs can improve N acquisition under varying N availability. In the greenhouse, ammonium availability had no effect on RHL and low nitrate availability increased RHL, while in the field low N reduced RHL. Longer RHL was associated with 216 % increase in biomass and 237 % increase in plant N content under low-N conditions in the greenhouse and a 250 % increase in biomass and 200 % increase in plant N content in the field compared with short-RHL phenotypes. In a low-N field environment, genotypes with long RHL had 267 % greater yield than those with short RHL. We speculate that long root hairs improve N capture by increased root surface area and expanded soil exploration beyond the N depletion zone surrounding the root surface. Conclusions: We conclude that root hairs play an important role in N acquisition. We suggest that root hairs merit consideration as a breeding target for improved N acquisition in maize and other crops. |
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Thailand Ministry of Education |
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Thailand Ministry of Education Patompong Saengwilai Christopher Strock Harini Rangarajan Joseph Chimungu Jirawat Salungyu Jonathan P. Lynch |
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Article |
author |
Patompong Saengwilai Christopher Strock Harini Rangarajan Joseph Chimungu Jirawat Salungyu Jonathan P. Lynch |
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Patompong Saengwilai |
title |
Root hair phenotypes influence nitrogen acquisition in maize |
title_short |
Root hair phenotypes influence nitrogen acquisition in maize |
title_full |
Root hair phenotypes influence nitrogen acquisition in maize |
title_fullStr |
Root hair phenotypes influence nitrogen acquisition in maize |
title_full_unstemmed |
Root hair phenotypes influence nitrogen acquisition in maize |
title_sort |
root hair phenotypes influence nitrogen acquisition in maize |
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2022 |
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https://repository.li.mahidol.ac.th/handle/123456789/75538 |
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1763496063797297152 |