Differential Hydraulic Properties and Primary Metabolism in Fine Root of Avocado Trees Rootstocks
Avocados (<i>Persea americana</i> Mill.) are one of the crops with the highest water footprints in Chile and the production is at risk due to severe and frequent droughts. The current production is mostly based on sexually (seed) propagated rootstocks, while clonally propagated rootstock...
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MDPI AG
2022-04-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/11/8/1059 |
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| author | Clemens P. Beyer Cesar Barrientos-Sanhueza Excequel Ponce Romina Pedreschi Italo F. Cuneo Juan E. Alvaro |
| author_facet | Clemens P. Beyer Cesar Barrientos-Sanhueza Excequel Ponce Romina Pedreschi Italo F. Cuneo Juan E. Alvaro |
| author_sort | Clemens P. Beyer |
| collection | DOAJ |
| description | Avocados (<i>Persea americana</i> Mill.) are one of the crops with the highest water footprints in Chile and the production is at risk due to severe and frequent droughts. The current production is mostly based on sexually (seed) propagated rootstocks, while clonally propagated rootstocks are on the rise. In a recent study, we found differences in aerial, root growth and water use efficiency between trees grown on these two different rootstocks under controlled continuous fertigation and environmental conditions. In this study, we further describe possible mechanisms which drive the differences. Avocado cv. “Hass” grafted on “Dusa” (D, clonally propagated) and “Mexicola” (M, sexually propagated) rootstocks and different root segments (3, 5 and 8 cm from root tip) were investigated using a combination of hydraulic measurements and polar metabolite (GC-MS) techniques. The results show significant differences in root hydraulic properties, indicating that “Mexicola” fine roots have higher water uptake capacity. The polar metabolites analysis revealed 13 compounds significantly different between rootstocks while nine were found significantly different among root segments. Principal component analysis (PCA) revealed differences between rootstocks and root segments. The data presented here highlight the importance of considering key physiological knowledge in avocado rootstocks breeding programs to be better prepared for future challenging environmental conditions. |
| first_indexed | 2024-03-09T13:07:58Z |
| format | Article |
| id | doaj.art-bbf5b3400c05482abf641784796f9037 |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-09T13:07:58Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-bbf5b3400c05482abf641784796f90372023-11-30T21:46:31ZengMDPI AGPlants2223-77472022-04-01118105910.3390/plants11081059Differential Hydraulic Properties and Primary Metabolism in Fine Root of Avocado Trees RootstocksClemens P. Beyer0Cesar Barrientos-Sanhueza1Excequel Ponce2Romina Pedreschi3Italo F. Cuneo4Juan E. Alvaro5Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340025, ChileFacultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340025, ChileFacultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340025, ChileFacultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340025, ChileFacultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340025, ChileFacultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340025, ChileAvocados (<i>Persea americana</i> Mill.) are one of the crops with the highest water footprints in Chile and the production is at risk due to severe and frequent droughts. The current production is mostly based on sexually (seed) propagated rootstocks, while clonally propagated rootstocks are on the rise. In a recent study, we found differences in aerial, root growth and water use efficiency between trees grown on these two different rootstocks under controlled continuous fertigation and environmental conditions. In this study, we further describe possible mechanisms which drive the differences. Avocado cv. “Hass” grafted on “Dusa” (D, clonally propagated) and “Mexicola” (M, sexually propagated) rootstocks and different root segments (3, 5 and 8 cm from root tip) were investigated using a combination of hydraulic measurements and polar metabolite (GC-MS) techniques. The results show significant differences in root hydraulic properties, indicating that “Mexicola” fine roots have higher water uptake capacity. The polar metabolites analysis revealed 13 compounds significantly different between rootstocks while nine were found significantly different among root segments. Principal component analysis (PCA) revealed differences between rootstocks and root segments. The data presented here highlight the importance of considering key physiological knowledge in avocado rootstocks breeding programs to be better prepared for future challenging environmental conditions.https://www.mdpi.com/2223-7747/11/8/1059<i>Persea americana</i> Mill. fine rootsroot tipprimary metabolitescarbohydrateswater uptaketree roots |
| spellingShingle | Clemens P. Beyer Cesar Barrientos-Sanhueza Excequel Ponce Romina Pedreschi Italo F. Cuneo Juan E. Alvaro Differential Hydraulic Properties and Primary Metabolism in Fine Root of Avocado Trees Rootstocks Plants <i>Persea americana</i> Mill. fine roots root tip primary metabolites carbohydrates water uptake tree roots |
| title | Differential Hydraulic Properties and Primary Metabolism in Fine Root of Avocado Trees Rootstocks |
| title_full | Differential Hydraulic Properties and Primary Metabolism in Fine Root of Avocado Trees Rootstocks |
| title_fullStr | Differential Hydraulic Properties and Primary Metabolism in Fine Root of Avocado Trees Rootstocks |
| title_full_unstemmed | Differential Hydraulic Properties and Primary Metabolism in Fine Root of Avocado Trees Rootstocks |
| title_short | Differential Hydraulic Properties and Primary Metabolism in Fine Root of Avocado Trees Rootstocks |
| title_sort | differential hydraulic properties and primary metabolism in fine root of avocado trees rootstocks |
| topic | <i>Persea americana</i> Mill. fine roots root tip primary metabolites carbohydrates water uptake tree roots |
| url | https://www.mdpi.com/2223-7747/11/8/1059 |
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