Effects of Water Deficits on <i>Prosopis tamarugo</i> Growth, Water Status and Stomata Functioning
The effect of water deficit on growth, water status and stomatal functioning of <i>Prosopis tamarugo</i> was investigated under controlled water conditions. The study was done at the Antumapu Experiment Station of the University of Chile. Three levels of water stress were tested: (i) wel...
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doaj-bae13c730dfd490396e7925112695d072020-12-30T00:01:11ZengMDPI AGPlants2223-77472021-12-0110535310.3390/plants10010053Effects of Water Deficits on <i>Prosopis tamarugo</i> Growth, Water Status and Stomata FunctioningAlson Time0Edmundo Acevedo1Programa Magister en Ciencias Agropecuarias, Facultad de Ciencias Agronómicas, Universidad de Chile, Santa Rosa, La Pintana, Santiago 11315, ChileLaboratory Relation Soil-Water-Plant (SAP), Department of Agricultural Production, Faculty of Agronomic Sciences, University of Chile, Santiago 1004, ChileThe effect of water deficit on growth, water status and stomatal functioning of <i>Prosopis tamarugo</i> was investigated under controlled water conditions. The study was done at the Antumapu Experiment Station of the University of Chile. Three levels of water stress were tested: (i) well-watered (WW), (ii) medium stress intensity (low-watered (LW)) and (iii) intense stress (non-watered (NW)), with 10 replicates each level. All growth parameters evaluated, such as twig growth, specific leaf area and apical dominance index, were significantly decreased under water deficit. Tamarugo twig growth decreased along with twig water potential. The stomatal conductance and CO<sub>2</sub> assimilation decreased significantly under the water deficit condition. Tamarugo maintained a high stomatal conductance at low leaf water potential. In addition, tamarugo reduced its leaf area as a strategy to diminish the water demand. These results suggest that, despite a significant decrease in water status, tamarugo can maintain its growth at low leaf water potential and can tolerate intense water deficit due to a partial stomatal closing strategy that allows the sustaining of CO<sub>2</sub> assimilation in the condition of reduced water availability.https://www.mdpi.com/2223-7747/10/1/53water potentialdroughtwater depletiontwig elongation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Alson Time Edmundo Acevedo |
spellingShingle |
Alson Time Edmundo Acevedo Effects of Water Deficits on <i>Prosopis tamarugo</i> Growth, Water Status and Stomata Functioning Plants water potential drought water depletion twig elongation |
author_facet |
Alson Time Edmundo Acevedo |
author_sort |
Alson Time |
title |
Effects of Water Deficits on <i>Prosopis tamarugo</i> Growth, Water Status and Stomata Functioning |
title_short |
Effects of Water Deficits on <i>Prosopis tamarugo</i> Growth, Water Status and Stomata Functioning |
title_full |
Effects of Water Deficits on <i>Prosopis tamarugo</i> Growth, Water Status and Stomata Functioning |
title_fullStr |
Effects of Water Deficits on <i>Prosopis tamarugo</i> Growth, Water Status and Stomata Functioning |
title_full_unstemmed |
Effects of Water Deficits on <i>Prosopis tamarugo</i> Growth, Water Status and Stomata Functioning |
title_sort |
effects of water deficits on <i>prosopis tamarugo</i> growth, water status and stomata functioning |
publisher |
MDPI AG |
series |
Plants |
issn |
2223-7747 |
publishDate |
2021-12-01 |
description |
The effect of water deficit on growth, water status and stomatal functioning of <i>Prosopis tamarugo</i> was investigated under controlled water conditions. The study was done at the Antumapu Experiment Station of the University of Chile. Three levels of water stress were tested: (i) well-watered (WW), (ii) medium stress intensity (low-watered (LW)) and (iii) intense stress (non-watered (NW)), with 10 replicates each level. All growth parameters evaluated, such as twig growth, specific leaf area and apical dominance index, were significantly decreased under water deficit. Tamarugo twig growth decreased along with twig water potential. The stomatal conductance and CO<sub>2</sub> assimilation decreased significantly under the water deficit condition. Tamarugo maintained a high stomatal conductance at low leaf water potential. In addition, tamarugo reduced its leaf area as a strategy to diminish the water demand. These results suggest that, despite a significant decrease in water status, tamarugo can maintain its growth at low leaf water potential and can tolerate intense water deficit due to a partial stomatal closing strategy that allows the sustaining of CO<sub>2</sub> assimilation in the condition of reduced water availability. |
topic |
water potential drought water depletion twig elongation |
url |
https://www.mdpi.com/2223-7747/10/1/53 |
work_keys_str_mv |
AT alsontime effectsofwaterdeficitsoniprosopistamarugoigrowthwaterstatusandstomatafunctioning AT edmundoacevedo effectsofwaterdeficitsoniprosopistamarugoigrowthwaterstatusandstomatafunctioning |
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