Relation of water transport to leaf gas exchange properties in three mangrove species

Trees ◽  
2000 ◽  
Vol 14 (5) ◽  
pp. 0258-0262 ◽  
Author(s):  
M. A. Sobrado
Keyword(s):  
Gas Exchange ◽  
Water Transport ◽  
Leaf Gas Exchange ◽  
Mangrove Species ◽  
Exchange Properties

scholarly journals Ethylene enhances root water transport and aquaporin expression in trembling aspen (Populus tremuloides) exposed to root hypoxia

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Xiangfeng Tan ◽  
Mengmeng Liu ◽  
Ning Du ◽  
Janusz J. Zwiazek
Keyword(s):  
Gas Exchange ◽  
Water Transport ◽  
Populus Tremuloides ◽  
Leaf Gas Exchange ◽  
Hydraulic Conductance ◽  
Root Hydraulic Conductance ◽  
Trembling Aspen ◽  
Expression Levels ◽  
Root Hypoxia ◽  
Exogenous Ethylene

Abstract Background Root hypoxia has detrimental effects on physiological processes and growth in most plants. The effects of hypoxia can be partly alleviated by ethylene. However, the tolerance mechanisms contributing to the ethylene-mediated hypoxia tolerance in plants remain poorly understood. Results In this study, we examined the effects of root hypoxia and exogenous ethylene treatments on leaf gas exchange, root hydraulic conductance, and the expression levels of several aquaporins of the plasma membrane intrinsic protein group (PIP) in trembling aspen (Populus tremuloides) seedlings. Ethylene enhanced net photosynthetic rates, transpiration rates, and root hydraulic conductance in hypoxic plants. Of the two subgroups of PIPs (PIP1 and PIP2), the protein abundance of PIP2s and the transcript abundance of PIP2;4 and PIP2;5 were higher in ethylene-treated trembling aspen roots compared with non-treated roots under hypoxia. The increases in the expression levels of these aquaporins could potentially facilitate root water transport. The enhanced root water transport by ethylene was likely responsible for the increase in leaf gas exchange of the hypoxic plants. Conclusions Exogenous ethylene enhanced root water transport and the expression levels of PIP2;4 and PIP2;5 in hypoxic roots of trembling aspen. The results suggest that ethylene facilitates the aquaporin-mediated water transport in plants exposed to root hypoxia.

Elevated atmospheric CO2 and drought effects on leaf gas exchange properties of barley

2011 ◽  
Vol 144 (1) ◽  
pp. 390-404 ◽  
Author(s):  
Gerard W. Wall ◽  
Richard L. Garcia ◽  
Frank Wechsung ◽  
Bruce A. Kimball
Keyword(s):  
Gas Exchange ◽  
Leaf Gas Exchange ◽  
Atmospheric Co2 ◽  
Elevated Atmospheric Co2 ◽  
Exchange Properties ◽  
Drought Effects

Water relations and leaf gas exchange properties in some elite canola (Brassica napus) lines under salt stress

2003 ◽  
Vol 142 (3) ◽  
pp. 307-316 ◽  
Author(s):  
M QASIM ◽  
M ASHRAF ◽  
M AMIR JAMIL ◽  
M Y ASHRAF ◽  
SHAFIQ-UR-REHMAN ◽  
...  
Keyword(s):  
Salt Stress ◽  
Brassica Napus ◽  
Gas Exchange ◽  
Water Relations ◽  
Leaf Gas Exchange ◽  
Exchange Properties

scholarly journals Drought-tolerant Common Bush Bean Physiological Parameters as Indicators to Identify Susceptibility

HortScience ◽  
2019 ◽  
Vol 54 (11) ◽  
pp. 2091-2098
Author(s):  
Alefsi David Sánchez-Reinoso ◽  
Gustavo Adolfo Ligarreto-Moreno ◽  
Hermann Restrepo-Díaz
Keyword(s):  
Gas Exchange ◽  
Common Bean ◽  
Water Deficit ◽  
Leaf Gas Exchange ◽  
Leaf Thickness ◽  
Reproductive Stage ◽  
Vegetative Stage ◽  
Phenological Stages ◽  
Bush Bean ◽  
Exchange Properties

Bean crops can be displaced to marginal areas or face abiotic stresses such as water deficit. Physiological responses allow the identification of tolerant genotypes and lead to more precise breeding strategies. The objective of this research was to evaluate the physiological (leaf gas exchange properties, leaf water content, and leaf thickness) and biochemical [proline and malondialdehyde (MDA)] responses of five common bush bean (Phaseolus vulgaris L.) cultivars (ICA-Cerinza, ICA-Bachue, NUA35, Bianca, and Bacatá) under a water shortage period by irrigation suspension (15 days) at two different phenological stages [vegetative: 40–55 days after seed emergence (DAE) or reproductive: (50–65 DAE)]. A completely randomized block design was carried out with a factorial arrangement (the phenological stage as the main factor and the cultivars as the secondary factor) for a total of 10 treatments with four repetitions per treatment. Leaf photosynthesis (Pn) showed equal photosynthesis values in control plants of all cultivars (≈20 μmol·m−2·s−1). The water deficit period reduced Pn close to 55% (≈12 μmol·m−2·s−1) at both, vegetative, or reproductive stage in all cases. Similar results were also observed on leaf thickness, with a reduction of ≈10% in water-stressed plants at either vegetative or reproductive stage in all evaluated cultivars. A higher MDA and proline production were observed in plants affected by a 15-day water deficit period, mainly at the vegetative stage. The obtained results suggest that the vegetative stage presented a more negative impact on the evaluated physiological variables in most of the cultivars used. Cultivar Bachue showed lower gas exchange properties affectation and higher proline content, which may indicate that this cultivar can be tolerant to water deficit stress conditions. This study allows suggesting that proline and MDA estimation are simple, fast, and low-cost techniques to screen cultivars to obtain more precise breeding selection in common bean. Finally, common bean cultivar selection through the use of biochemical markers can be complemented by the estimation of leaf gas exchange parameters at different phenological stages.

scholarly journals A 3-D functional–structural grapevine model that couples the dynamics of water transport with leaf gas exchange

2017 ◽  
Vol 121 (5) ◽  
pp. 833-848 ◽  
Author(s):  
Junqi Zhu ◽  
Zhanwu Dai ◽  
Philippe Vivin ◽  
Gregory A Gambetta ◽  
Michael Henke ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Water Transport ◽  
Leaf Gas Exchange

scholarly journals Leaf Gas Exchange Properties of Potato under Different Temperature and Soil Moisture at Different Growth Stages.

2000 ◽  
Vol 38 (4) ◽  
pp. 229-239 ◽  
Author(s):  
Subhash Chandra GHOSH ◽  
Koh-ichiro ASANUMA ◽  
Akihito KUSUTANI ◽  
Masanori TOYOTA
Keyword(s):  
Soil Moisture ◽  
Gas Exchange ◽  
Leaf Gas Exchange ◽  
Growth Stages ◽  
Different Growth Stages ◽  
Exchange Properties

scholarly journals Leaf gas exchange characteristics of three neotropical mangrove species in response to varying hydroperiod

2006 ◽  
Vol 26 (7) ◽  
pp. 959-968 ◽  
Author(s):  
K. W. Krauss ◽  
R. R. Twilley ◽  
T. W. Doyle ◽  
E. S. Gardiner
Keyword(s):  
Gas Exchange ◽  
Leaf Gas Exchange ◽  
Mangrove Species ◽  
Gas Exchange Characteristics
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