Genetic control of water and nitrate capture and their use efficiency in lettuce (Lactuca sativa L.)
Robustness in lettuce, defined as the ability to produce stable yields across a wide range of environments, may be associated with below-ground traits such as water and nitrate capture. In lettuce, research on the role of root traits in resource acquisition has been rather limited. Exploring genetic...
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doaj-f5f20213e97f4ad1b98ebf39c7a8ee942020-11-24T22:01:47ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2016-03-01710.3389/fpls.2016.00343180529Genetic control of water and nitrate capture and their use efficiency in lettuce (Lactuca sativa L.)Pauline J Kerbiriou0Pauline J Kerbiriou1Chris A Maliepaard2TjeerdJan eStomph3Martin eKoper4Dorothee eFroissart5Ilja eRoobeek6Edith T. Lammerts Van Bueren7Paul Christiaan Struik8Wageningen UniversityWageningen UniversityWageningen UniversityWageningen UniversityEnza Zaden BVEnza ZadenEnza Zaden BVWageningen UniversityWageningen UniversityRobustness in lettuce, defined as the ability to produce stable yields across a wide range of environments, may be associated with below-ground traits such as water and nitrate capture. In lettuce, research on the role of root traits in resource acquisition has been rather limited. Exploring genetic variation for such traits and shoot performance in lettuce across environments can contribute to breeding for robustness. A population of 142 lettuce cultivars was evaluated during two seasons (spring and summer) in two different locations under organic cropping conditions, and nitrate and water capture below-ground and accumulation in the shoots were assessed at two sampling dates. Resource capture in each soil layer was measured using a volumetric method based on fresh and dry weight difference in the soil for soil moisture, and using an ion-specific electrode for nitrate. We used these results to carry out an association mapping study based on 1170 single nucleotide polymorphism markers. We demonstrated that our indirect, high-throughput phenotyping methodology was reliable and capable of quantifying genetic variation in resource capture. QTLs for below-ground traits were not detected at early sampling. Significant marker-trait associations were detected across trials for below-ground and shoot traits, in number and position varying with trial, highlighting the importance of the growing environment on the expression of the traits measured. The difficulty of identifying general patterns in the expression of the QTLs for below-ground traits across different environments calls for a more in-depth analysis of the physiological mechanisms at root level allowing sustained shoot growth.http://journal.frontiersin.org/Journal/10.3389/fpls.2016.00343/fullLettuceQuantitative Trait LociAssociation mappingnitrogen use efficiencyresource acquisitionSoil sampling |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Pauline J Kerbiriou Pauline J Kerbiriou Chris A Maliepaard TjeerdJan eStomph Martin eKoper Dorothee eFroissart Ilja eRoobeek Edith T. Lammerts Van Bueren Paul Christiaan Struik |
spellingShingle |
Pauline J Kerbiriou Pauline J Kerbiriou Chris A Maliepaard TjeerdJan eStomph Martin eKoper Dorothee eFroissart Ilja eRoobeek Edith T. Lammerts Van Bueren Paul Christiaan Struik Genetic control of water and nitrate capture and their use efficiency in lettuce (Lactuca sativa L.) Frontiers in Plant Science Lettuce Quantitative Trait Loci Association mapping nitrogen use efficiency resource acquisition Soil sampling |
author_facet |
Pauline J Kerbiriou Pauline J Kerbiriou Chris A Maliepaard TjeerdJan eStomph Martin eKoper Dorothee eFroissart Ilja eRoobeek Edith T. Lammerts Van Bueren Paul Christiaan Struik |
author_sort |
Pauline J Kerbiriou |
title |
Genetic control of water and nitrate capture and their use efficiency in lettuce (Lactuca sativa L.) |
title_short |
Genetic control of water and nitrate capture and their use efficiency in lettuce (Lactuca sativa L.) |
title_full |
Genetic control of water and nitrate capture and their use efficiency in lettuce (Lactuca sativa L.) |
title_fullStr |
Genetic control of water and nitrate capture and their use efficiency in lettuce (Lactuca sativa L.) |
title_full_unstemmed |
Genetic control of water and nitrate capture and their use efficiency in lettuce (Lactuca sativa L.) |
title_sort |
genetic control of water and nitrate capture and their use efficiency in lettuce (lactuca sativa l.) |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Plant Science |
issn |
1664-462X |
publishDate |
2016-03-01 |
description |
Robustness in lettuce, defined as the ability to produce stable yields across a wide range of environments, may be associated with below-ground traits such as water and nitrate capture. In lettuce, research on the role of root traits in resource acquisition has been rather limited. Exploring genetic variation for such traits and shoot performance in lettuce across environments can contribute to breeding for robustness. A population of 142 lettuce cultivars was evaluated during two seasons (spring and summer) in two different locations under organic cropping conditions, and nitrate and water capture below-ground and accumulation in the shoots were assessed at two sampling dates. Resource capture in each soil layer was measured using a volumetric method based on fresh and dry weight difference in the soil for soil moisture, and using an ion-specific electrode for nitrate. We used these results to carry out an association mapping study based on 1170 single nucleotide polymorphism markers. We demonstrated that our indirect, high-throughput phenotyping methodology was reliable and capable of quantifying genetic variation in resource capture. QTLs for below-ground traits were not detected at early sampling. Significant marker-trait associations were detected across trials for below-ground and shoot traits, in number and position varying with trial, highlighting the importance of the growing environment on the expression of the traits measured. The difficulty of identifying general patterns in the expression of the QTLs for below-ground traits across different environments calls for a more in-depth analysis of the physiological mechanisms at root level allowing sustained shoot growth. |
topic |
Lettuce Quantitative Trait Loci Association mapping nitrogen use efficiency resource acquisition Soil sampling |
url |
http://journal.frontiersin.org/Journal/10.3389/fpls.2016.00343/full |
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