Variation in Root-Related Traits Is Associated With Water Uptake in Lagenaria siceraria Genotypes Under Water-Deficit Conditions
In many agricultural areas, crop production has decreased due to a lack of water availability, which is having a negative impact on sustainability and putting food security at risk. In plants, the plasticity of the root system architecture (RSA) is considered to be a key trait driving the modificati...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-06-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.897256/full |
| _version_ | 1818534496641744896 |
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| author | Rodrigo Iván Contreras-Soto Dinoclaudio Zacarias Rafael Leonel Domingos Moiana Carlos Maldonado Freddy Mora-Poblete |
| author_facet | Rodrigo Iván Contreras-Soto Dinoclaudio Zacarias Rafael Leonel Domingos Moiana Carlos Maldonado Freddy Mora-Poblete |
| author_sort | Rodrigo Iván Contreras-Soto |
| collection | DOAJ |
| description | In many agricultural areas, crop production has decreased due to a lack of water availability, which is having a negative impact on sustainability and putting food security at risk. In plants, the plasticity of the root system architecture (RSA) is considered to be a key trait driving the modification of the growth and structure of roots in response to water deficits. The purpose of this study was to examine the plasticity of the RSA traits (mean root diameter, MRD; root volume, RV; root length, RL; and root surface area, SA) associated with drought tolerance in eight Lagenaria siceraria (Mol. Standl) genotypes, representing three different geographical origins: South Africa (BG-58, BG-78, and GC), Asia (Philippines and South Korea), and Chile (Illapel, Chepica, and Osorno). The RSA changes were evaluated at four substrate depths (from 0 to 40 cm). Bottle gourd genotypes were grown in 20 L capacity pots under two contrasting levels of irrigation (well-watered and water-deficit conditions). The results showed that the water productivity (WP) had a significant effect on plasticity values, with the Chilean accessions having the highest values. Furthermore, Illapel and Chepica genotypes presented the highest WP, MRD, and RV values under water-deficit conditions, in which MRD and RV were significant in the deeper layers (20–30 and 30–40 cm). Biplot analysis showed that the Illapel and Chepica genotypes presented a high WP, MRD, and RV, which confirmed that these may be promising drought-tolerant genotypes. Consequently, increased root diameter and volume in bottle gourd may constitute a response to a water deficit. The RSA traits studied here can be used as selection criteria in bottle gourd breeding programs under water-deficit conditions. |
| first_indexed | 2024-12-11T18:12:24Z |
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| id | doaj.art-2aaf85d0cb1a4e0f972e2886280fffaf |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-11T18:12:24Z |
| publishDate | 2022-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-2aaf85d0cb1a4e0f972e2886280fffaf2022-12-22T00:55:31ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-06-011310.3389/fpls.2022.897256897256Variation in Root-Related Traits Is Associated With Water Uptake in Lagenaria siceraria Genotypes Under Water-Deficit ConditionsRodrigo Iván Contreras-Soto0Dinoclaudio Zacarias Rafael1Leonel Domingos Moiana2Carlos Maldonado3Freddy Mora-Poblete4Instituto de Ciencias Agroalimentarias, Animales y Ambientales, Universidad de O' Higgins, San Fernando, ChileAgricultural Research Institute of Mozambique, Maputo, MozambiqueAgricultural Research Institute of Mozambique, Maputo, MozambiqueInstituto de Ciencias Agroalimentarias, Animales y Ambientales, Universidad de O' Higgins, San Fernando, ChileInstitute of Biological Sciences, University of Talca, Talca, ChileIn many agricultural areas, crop production has decreased due to a lack of water availability, which is having a negative impact on sustainability and putting food security at risk. In plants, the plasticity of the root system architecture (RSA) is considered to be a key trait driving the modification of the growth and structure of roots in response to water deficits. The purpose of this study was to examine the plasticity of the RSA traits (mean root diameter, MRD; root volume, RV; root length, RL; and root surface area, SA) associated with drought tolerance in eight Lagenaria siceraria (Mol. Standl) genotypes, representing three different geographical origins: South Africa (BG-58, BG-78, and GC), Asia (Philippines and South Korea), and Chile (Illapel, Chepica, and Osorno). The RSA changes were evaluated at four substrate depths (from 0 to 40 cm). Bottle gourd genotypes were grown in 20 L capacity pots under two contrasting levels of irrigation (well-watered and water-deficit conditions). The results showed that the water productivity (WP) had a significant effect on plasticity values, with the Chilean accessions having the highest values. Furthermore, Illapel and Chepica genotypes presented the highest WP, MRD, and RV values under water-deficit conditions, in which MRD and RV were significant in the deeper layers (20–30 and 30–40 cm). Biplot analysis showed that the Illapel and Chepica genotypes presented a high WP, MRD, and RV, which confirmed that these may be promising drought-tolerant genotypes. Consequently, increased root diameter and volume in bottle gourd may constitute a response to a water deficit. The RSA traits studied here can be used as selection criteria in bottle gourd breeding programs under water-deficit conditions.https://www.frontiersin.org/articles/10.3389/fpls.2022.897256/fullbottle gourdphenotypic plasticityroot systemwater-deficitwater productivity |
| spellingShingle | Rodrigo Iván Contreras-Soto Dinoclaudio Zacarias Rafael Leonel Domingos Moiana Carlos Maldonado Freddy Mora-Poblete Variation in Root-Related Traits Is Associated With Water Uptake in Lagenaria siceraria Genotypes Under Water-Deficit Conditions Frontiers in Plant Science bottle gourd phenotypic plasticity root system water-deficit water productivity |
| title | Variation in Root-Related Traits Is Associated With Water Uptake in Lagenaria siceraria Genotypes Under Water-Deficit Conditions |
| title_full | Variation in Root-Related Traits Is Associated With Water Uptake in Lagenaria siceraria Genotypes Under Water-Deficit Conditions |
| title_fullStr | Variation in Root-Related Traits Is Associated With Water Uptake in Lagenaria siceraria Genotypes Under Water-Deficit Conditions |
| title_full_unstemmed | Variation in Root-Related Traits Is Associated With Water Uptake in Lagenaria siceraria Genotypes Under Water-Deficit Conditions |
| title_short | Variation in Root-Related Traits Is Associated With Water Uptake in Lagenaria siceraria Genotypes Under Water-Deficit Conditions |
| title_sort | variation in root related traits is associated with water uptake in lagenaria siceraria genotypes under water deficit conditions |
| topic | bottle gourd phenotypic plasticity root system water-deficit water productivity |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.897256/full |
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