Effects of Light Intensity and Water Stress on Growth, Photosynthetic Characteristics and Plant Survival of <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & Mateo
The objective of this study was to identify the physiological mechanisms used by <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & Mateo, a species in critical danger of extinction, to cope with two typical abiotic conditions. During the...
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| Format: | Article |
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MDPI AG
2023-08-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/9/8/878 |
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| author | María José Gómez-Bellot María Jesús Sánchez-Blanco Beatriz Lorente María José Vicente-Colomer María Fernanda Ortuño |
| author_facet | María José Gómez-Bellot María Jesús Sánchez-Blanco Beatriz Lorente María José Vicente-Colomer María Fernanda Ortuño |
| author_sort | María José Gómez-Bellot |
| collection | DOAJ |
| description | The objective of this study was to identify the physiological mechanisms used by <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & Mateo, a species in critical danger of extinction, to cope with two typical abiotic conditions. During the summer of 2021, plants were cultivated under a shade mesh that intercepted 50% of the incident solar radiation (SHADE) and in natural conditions (SUN). Three irrigation treatments were also applied: control, T1, moderate water deficit; T2, 60% of the control, severe deficit; and T3, 30% of the control. Therefore, there were six treatments (SUN-T1, SUN-T2, SUN-T3, SHADE-T1, SHADE-T2, SHADE-T3). Plants were more affected by solar radiation than by deficit irrigation. Although leaf water potential, stomatal conductance and root biomass decreased by up to 45%, 63% and 65%, respectively, as deficit irrigation increased, plants were able to develop a leaf osmotic adjustment and an improved intrinsic water-use efficiency to maintain their growth and survival rate. Shade conditions improved gas exchange, reduced leaf temperature and induced the synthesis of chlorophylls, regardless of the irrigation level imposed. This indicated that radiation was the most limiting factor in our experiment. Applying 50% of the radiation and a moderate water deficit would help to obtain a good plant development and high survival rate in future recovery and conservation programs for the species. |
| first_indexed | 2024-03-10T23:53:44Z |
| format | Article |
| id | doaj.art-cfcf02003f164527819879166c091f44 |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-10T23:53:44Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-cfcf02003f164527819879166c091f442023-11-19T01:21:04ZengMDPI AGHorticulturae2311-75242023-08-019887810.3390/horticulturae9080878Effects of Light Intensity and Water Stress on Growth, Photosynthetic Characteristics and Plant Survival of <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & MateoMaría José Gómez-Bellot0María Jesús Sánchez-Blanco1Beatriz Lorente2María José Vicente-Colomer3María Fernanda Ortuño4Department of Irrigation, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), P.O. Box 164, 30100 Espinardo-Murcia, Murcia, SpainDepartment of Irrigation, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), P.O. Box 164, 30100 Espinardo-Murcia, Murcia, SpainDepartment of Irrigation, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), P.O. Box 164, 30100 Espinardo-Murcia, Murcia, SpainDepartment of Agricultural Engineering, UPCT—Technical University of Cartagena, 10, 30203 Cartagena, Bolivar, SpainDepartment of Irrigation, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), P.O. Box 164, 30100 Espinardo-Murcia, Murcia, SpainThe objective of this study was to identify the physiological mechanisms used by <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & Mateo, a species in critical danger of extinction, to cope with two typical abiotic conditions. During the summer of 2021, plants were cultivated under a shade mesh that intercepted 50% of the incident solar radiation (SHADE) and in natural conditions (SUN). Three irrigation treatments were also applied: control, T1, moderate water deficit; T2, 60% of the control, severe deficit; and T3, 30% of the control. Therefore, there were six treatments (SUN-T1, SUN-T2, SUN-T3, SHADE-T1, SHADE-T2, SHADE-T3). Plants were more affected by solar radiation than by deficit irrigation. Although leaf water potential, stomatal conductance and root biomass decreased by up to 45%, 63% and 65%, respectively, as deficit irrigation increased, plants were able to develop a leaf osmotic adjustment and an improved intrinsic water-use efficiency to maintain their growth and survival rate. Shade conditions improved gas exchange, reduced leaf temperature and induced the synthesis of chlorophylls, regardless of the irrigation level imposed. This indicated that radiation was the most limiting factor in our experiment. Applying 50% of the radiation and a moderate water deficit would help to obtain a good plant development and high survival rate in future recovery and conservation programs for the species.https://www.mdpi.com/2311-7524/9/8/878biomassgas exchangeleaf mineral contentMediterranean shrubosmotic adjustmentshading |
| spellingShingle | María José Gómez-Bellot María Jesús Sánchez-Blanco Beatriz Lorente María José Vicente-Colomer María Fernanda Ortuño Effects of Light Intensity and Water Stress on Growth, Photosynthetic Characteristics and Plant Survival of <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & Mateo Horticulturae biomass gas exchange leaf mineral content Mediterranean shrub osmotic adjustment shading |
| title | Effects of Light Intensity and Water Stress on Growth, Photosynthetic Characteristics and Plant Survival of <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & Mateo |
| title_full | Effects of Light Intensity and Water Stress on Growth, Photosynthetic Characteristics and Plant Survival of <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & Mateo |
| title_fullStr | Effects of Light Intensity and Water Stress on Growth, Photosynthetic Characteristics and Plant Survival of <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & Mateo |
| title_full_unstemmed | Effects of Light Intensity and Water Stress on Growth, Photosynthetic Characteristics and Plant Survival of <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & Mateo |
| title_short | Effects of Light Intensity and Water Stress on Growth, Photosynthetic Characteristics and Plant Survival of <i>Cistus heterophyllus</i> Desf. Subsp. <i>carthaginensis</i> (Pau) M. B. Crespo & Mateo |
| title_sort | effects of light intensity and water stress on growth photosynthetic characteristics and plant survival of i cistus heterophyllus i desf subsp i carthaginensis i pau m b crespo mateo |
| topic | biomass gas exchange leaf mineral content Mediterranean shrub osmotic adjustment shading |
| url | https://www.mdpi.com/2311-7524/9/8/878 |
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