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| Authors | Hussain, MI; El-Keblawy, A; Tsombou, FM |
| Author Full Name | Hussain, M. Iftikhar; El-Keblawy, Ali; Mitterand Tsombou, Francois |
| Title | Leaf Age, Canopy Position, and Habitat Affect the Carbon Isotope Discrimination and Water-Use Efficiency in Three C-3 Leguminous Prosopis Species from a Hyper-Arid Climate |
| Source | PLANTS-BASEL |
| Language | English |
| Document Type | Article |
| Author Keywords | carbon isotope composition; leaf C; leaf N; intrinsic water-use efficiency; canopy position; leaf age |
| Keywords Plus | RESPIRED CO2; GRASSLAND; STRESS; GROWTH |
| Abstract | The present study involved measurements of the stable carbon isotope composition (delta C-13) and intrinsic water-use efficiency (iWUE) of three C-3 leguminous Prosopis spp. (P. juliflora, P. cineraria, and P. pallida) foliage at different canopy positions (east and west) from saline (SLH) and non-saline habitats (NSH). Integrated measurements of the stable carbon isotope composition (delta C-13) of plant tissue were broadly used to study iWUE, taking into consideration the effect of leaf age and canopy position on C isotope discrimination. Mature foliage of P. pallida from an SLH with a west canopy position had significantly higher delta C-13 (less negative) than that from NSH. On the west side, Delta C-13 values ranged from 17.8 parts per thousand (P. pallida) to 22.31 parts per thousand (P. juliflora) for a west canopy position, while they varied from 18.05 parts per thousand (P. pallida) to 22.4 parts per thousand (P. cineraria) on the east canopy side. Because the patterns are similar for the three Prosopis species, the difference in carbon isotope discrimination (Delta C-13) between the canopy position (west and east) is relatively consistent among species and sites, ranging between 17.8 +/- 4.43 parts per thousand for the young foliage in the west and 18.05 +/- 4.35 parts per thousand for the east canopy position. The iWUE of P. pallida was twice that of P. cineraria. The iWUE of P. juliflora was higher from NSH than SLH. Mature leaves possessed a higher iWUE than the young leaves. We concluded that exotic P. juliflora and P. pallida have higher iWUE values than the native P. cineraria, which might be due to the rapid below-ground development of plant roots in the Arabian deserts of the United Arab Emirates (UAE). This could enable the alien species access to deeper humid soil layers or water resources. |
| Author Address | [Hussain, M. Iftikhar; El-Keblawy, Ali] Univ Sharjah, RISE, Sharjah 27272, U Arab Emirates; [El-Keblawy, Ali; Mitterand Tsombou, Francois] Univ Sharjah, Fac Sci, Dept Appl Biol, Sharjah 27272, U Arab Emirates; [Mitterand Tsombou, Francois] Univ Malaga, Dept Biol Vegetal, Malaga 29016, Spain |
| Reprint Address | Hussain, MI (corresponding author), Univ Sharjah, RISE, Sharjah 27272, U Arab Emirates. |
| E-mail Address | mih786@gmail.com; akeblawy@sharjah.ac.ae; fmitternanatsombou@sharjah.ac.ae |
| ResearcherID Number | ; Hussain, M. Iftikhar/Y-3575-2018 |
| ORCID Number | El-Keblawy, Ali/0000-0003-4448-6236; Hussain, M. Iftikhar/0000-0002-9710-3801 |
| Funding Agency and Grant Number | Sharjah Research Academy and Research Office of the University of Sharjah [150428] |
| Funding Text | This study was supported by a research project (ID: 150428) funded by both the Sharjah Research Academy and Research Office of the University of Sharjah. |
| Times Cited | 4 |
| Total Times Cited Count (WoS, BCI, and CSCD) | 4 |
| Publisher | MDPI |
| Publisher City | BASEL |
| Publisher Address | ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND |
| 29-Character Source Abbreviation | PLANTS-BASEL |
| ISO Source Abbreviation | Plants-Basel |
| Publication Date | OCT |
| Year Published | 2019 |
| Volume | 8 |
| Issue | 10 |
| Article Number | 402 |
| Digital Object Identifier (DOI) | 10.3390/plants8100402 |
| Page Count | 11 |
| Web of Science Category | Plant Sciences |
| Subject Category | Plant Sciences |
| Document Delivery Number | JP4XQ |
| Unique Article Identifier | WOS:000498270000048 |
| Plants associated with this reference |