scholarly journals Foliar Water Uptake ofTamarix ramosissimafrom an Atmosphere of High Humidity

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Shuang Li ◽  
Hong-lang Xiao ◽  
Liang Zhao ◽  
Mao-Xian Zhou ◽  
Fang Wang
Keyword(s):  
Water Uptake ◽  
Sap Flow ◽  
Reverse Flow ◽  
Water Status ◽  
Leaf Water Content ◽  
High Humidity ◽  
Foliar Uptake ◽  
Desert Plants ◽  
Atmospheric Humidity ◽  
Foliar Water Uptake

Many species have been found to be capable of foliar water uptake, but little research has focused on this in desert plants.Tamarix ramosissimawas investigated to determine whether its leaves can directly absorb water from high humidity atmosphere and, if they can, to understand the magnitude and importance of foliar water uptake. Various techniques were adopted to demonstrate foliar water uptake under submergence or high atmospheric humidity. The mean increase in leaf water content after submergence was 29.38% and 20.93% for mature and tender leaves, respectively. In the chamber experiment, obvious reverse sap flow occurred when relative humidity (RH) was persistently above 90%. Reverse flow was recorded first in twigs, then in branches and stems. For the stem, the percentage of negative sap flow rate accounting for the maximum value of sap flow reached 10.71%, and its amount accounted for 7.54% of diurnal sap flow. Small rainfall can not only compensate water loss of plant by foliar uptake, but also suppress transpiration. Foliar uptake can appear in the daytime under certain rainfall events. High atmospheric humidity is beneficial for enhancing the water status of plants. Foliar uptake should be an important strategy of water acquisition for desert plants.

scholarly journals Foliar water‐uptake strategies are related to leaf water status and gas exchange in plants from a ferruginous rupestrian field

2019 ◽  
Vol 106 (7) ◽  
pp. 935-942 ◽  
Author(s):  
Daniela Boanares ◽  
Alessandra R. Kozovits ◽  
José P. Lemos‐Filho ◽  
Rosy M. S. Isaias ◽  
Ricardo R. R. Solar ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Water Uptake ◽  
Water Status ◽  
Leaf Water ◽  
Leaf Water Status ◽  
Foliar Water Uptake

scholarly journals Foliar water uptake as a source of hydrogen and oxygen in plant biomass

2020 ◽  
Author(s):  
Akira Kagawa
Keyword(s):  
Water Uptake ◽  
Plant Biomass ◽  
Water Source ◽  
Root Uptake ◽  
Foliar Uptake ◽  
Terrestrial Plants ◽  
Introductory Biology ◽  
Oxygen Isotope Ratios ◽  
Foliar Water Uptake ◽  
Hydrogen And Oxygen Isotope

Introductory biology lessons around the world typically teach that plants absorb water through their roots, but, unfortunately, absorption of water through leaves and subsequent transport and use of this water for biomass formation remains a field limited mostly to specialists. Recent studies have identified foliar water uptake as a significant but still unquantified net water source for terrestrial plants. The growing interest in the development of a new model that includes foliar uptake of liquid water to explain hydrogen and oxygen isotope ratios in leaf water and tree rings requires a method for distinguishing between these two water sources. I therefore devised a method utilizing two different heavy waters (HDO and H218O) to simultaneously label both foliar-uptake water and root-uptake water and quantify their relative contributions to plant biomass. Using this new method, I here present evidence that, in the case of well-watered Cryptomeria japonica, hydrogen and oxygen incorporated into new leaf cellulose in the rainy season derives mostly from foliar-uptake water, while that of new root cellulose derives mostly from root-uptake water, and new branch xylem is somewhere in between. Abandoning the assumption that these elements are supplied from soil water alone may have vast implications in fields ranging from isotope dendroclimatology, silviculture, to biogeochemistry.

Leaf water uptake strategy of desert plants in the Junggar Basin, China

2011 ◽  
Vol 35 (9) ◽  
pp. 893-905 ◽  
Author(s):  
Xin-Jun ZHENG ◽  
Song LI ◽  
Yan LI
Keyword(s):  
Water Uptake ◽  
Junggar Basin ◽  
Leaf Water ◽  
Desert Plants

Foliar water uptake via cork warts in mangroves of the Sonneratia genus

2021 ◽  
Author(s):  
Callum Bryant ◽  
Tomas I. Fuenzalida ◽  
Alonso Zavafer ◽  
Hoa T. Nguyen ◽  
Nigel Brothers ◽  
...  
Keyword(s):  
Water Uptake ◽  
Foliar Water Uptake

Water transport in European Beech roots (<5mm) under drought in the south of Lower Saxony

2021 ◽  
Author(s):  
Eva Messinger ◽  
Heinz Coners ◽  
Dietrich Hertel ◽  
Christoph Leuschner
Keyword(s):  
Soil Moisture ◽  
Water Transport ◽  
Water Uptake ◽  
Sap Flow ◽  
Climate Models ◽  
European Beech ◽  
Root Surface Area ◽  
Lower Saxony ◽  
Tree Roots ◽  
Small Roots

&lt;p&gt;Climate models predict hotter and dryer summers in Germany, with longer periods of extreme droughts like in summer 2018. How does this affect the water uptake and transport in tree roots growing in the top- and subsoil?&lt;/p&gt;&lt;p&gt;In summer 2018 and 2019 we measured the water transport in fine roots (&lt;5mm) of European Beech on tertiary sand and triassic sandstone up to 2 m depth. We adapted the well-established HRM technique to enable measurements of very small sap flow rates in small roots. Thus, we measured the water transport as a temperature ratio of a stretching heat pulse.&lt;/p&gt;&lt;p&gt;Relating sap flow to root surface area, root depth, anatomy, soil moisture, and VPD allows for interesting insights in tree water uptake rates: Where are the limits of drought intensity and duration, for water uptake and recovery of small roots? Are there differences in the function of top- and subsoil roots? Are roots specialized for water transport or nutrient uptake? The investigated data gives a first hint on how the water transport in Beech roots differs with changes in the soil moisture and VPD under changing climate.&lt;/p&gt;

Impact of phloem girdling on water status in desert plants Alhagi sparsifolia Shap. (Fabaceae) and Karelinia Caspica (Pall.) Less. (Asteraceae)

2015 ◽  
Vol 38 (4) ◽  
pp. 717-728 ◽  
Author(s):  
Gang-liang Tang ◽  
Xiang-yi Li ◽  
Li-sha Lin ◽  
Zi-chun Guo ◽  
Chang-jun Li ◽  
...  
Keyword(s):  
Water Status ◽  
Desert Plants ◽  
Alhagi Sparsifolia ◽  
Karelinia Caspica

scholarly journals Silicon and the Association with an Arbuscular-Mycorrhizal Fungus (Rhizophagus clarus) Mitigate the Adverse Effects of Drought Stress on Strawberry

Agronomy ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 41 ◽  
Author(s):  
Narges Moradtalab ◽  
Roghieh Hajiboland ◽  
Nasser Aliasgharzad ◽  
Tobias E. Hartmann ◽  
Günter Neumann
Keyword(s):  
Water Content ◽  
Plant Biomass ◽  
Arbuscular Mycorrhizal Fungus ◽  
Water Status ◽  
Mycorrhizal Fungus ◽  
Arbuscular Mycorrhizal ◽  
Stress Factors ◽  
Leaf Water Content ◽  
Rhizophagus Clarus ◽  
Effects Of Drought

Silicon (Si) is a beneficial element that alleviates the effects of stress factors including drought (D). Strawberry is a Si-accumulator species sensitive to D; however, the function of Si in this species is obscure. This study was conducted to examine the effect of Si and inoculation with an arbuscular mycorrhizal fungus (AMF) on physiological and biochemical responses of strawberry plants under D. Plants were grown for six weeks in perlite and irrigated with a nutrient solution. The effect of Si (3 mmol L‒1), AMF (Rhizophagus clarus) and D (mild and severe D) was studied on growth, water relations, mycorrhization, antioxidative defense, osmolytes concentration, and micronutrients status. Si and AMF significantly enhanced plant biomass production by increasing photosynthesis rate, water content and use efficiency, antioxidant enzyme defense, and the nutritional status of particularly Zn. In contrast to the roots, osmotic adjustment did not contribute to the increase of leaf water content suggesting a different strategy of both Si and AMF for improving water status in the leaves and roots. Our results demonstrated a synergistic effect of AMF and Si on improving the growth of strawberry not only under D but also under control conditions.

scholarly journals Mutations in the tomato gibberellin receptors suppress xylem proliferation and reduce water loss under water-deficit conditions

2020 ◽  
Vol 71 (12) ◽  
pp. 3603-3612 ◽  
Author(s):  
Natanella Illouz-Eliaz ◽  
Idan Nissan ◽  
Ido Nir ◽  
Uria Ramon ◽  
Hagai Shohat ◽  
...  
Keyword(s):  
Water Deficit ◽  
Water Status ◽  
Stomatal Closure ◽  
Normal Growth ◽  
Hydraulic Conductance ◽  
Xylem Vessel ◽  
Leaf Water Content ◽  
Whole Plant ◽  
Drought Conditions ◽  
Better Than

Abstract Low gibberellin (GA) activity in tomato (Solanum lycopersicum) inhibits leaf expansion and reduces stomatal conductance. This leads to lower transpiration and improved water status under transient drought conditions. Tomato has three GIBBERELLIN-INSENSITIVE DWARF1 (GID1) GA receptors with overlapping activities and high redundancy. We tested whether mutation in a single GID1 reduces transpiration without affecting growth and productivity. CRISPR-Cas9 gid1 mutants were able to maintain higher leaf water content under water-deficit conditions. Moreover, while gid1a exhibited normal growth, it showed reduced whole-plant transpiration and better recovery from dehydration. Mutation in GID1a inhibited xylem vessel proliferation, which led to lower hydraulic conductance. In stronger GA mutants, we also found reduced xylem vessel expansion. These results suggest that low GA activity affects transpiration by multiple mechanisms: it reduces leaf area, promotes stomatal closure, and reduces xylem proliferation and expansion, and as a result, xylem hydraulic conductance. We further examined if gid1a performs better than the control M82 in the field. Under these conditions, the high redundancy of GID1s was lost and gid1a plants were semi-dwarf, but their productivity was not affected. Although gid1a did not perform better under drought conditions in the field, it exhibited a higher harvest index.

Sign in / Sign up

Export Citation Format

Share Document