Revisiting plant hydrological niches: The importance of atmospheric resources for ground‐rooted plants

Matos, Ilaíne Silveira; Binks, Oliver; Eller, Cleiton B.; Zorger, Bianca B.; Meir, Patrick; Dawson, Todd E.; Rosado, Bruno H. P.

doi:10.1111/1365-2745.13933

Cited by 11 publications

(12 citation statements)

References 138 publications

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“…These results are in agreement with the so-called "leaky cuticle hypothesis" (Matos et al, 2022), where cuticles are considered to be equally permeable to water in both directions, and that leaves will absorb or lose water depending on driving gradients (i.e., vapor pressure deficit for g min , and ΔΨ for K FWU ). Accordingly, the calculation of the leaf conductivity to the uptake of surface water (k FWU ; as for Binks et al, 2020) revealed a positive correlation with g min (p < 0.001; Figure S2).…”

Section: Fwu Minimum Leaf Conductance and Water Potentialsupporting

confidence: 88%

High potential for foliar water uptake in early stages of leaf development of three woody angiosperms

Losso

Dämon

Hacke

et al. 2023

Physiologia Plantarum

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Foliar water uptake (FWU) is a widespread mechanism that may help plants cope with drought stress in a wide range of ecosystems. FWU can be affected by various leaf traits, which change during leaf development. We exposed cut and dehydrated leaves to rainwater and measured FWU, changes in leaf water potential after 19 h of FWU (ΔΨ), minimum leaf conductance (gmin), and leaf wettability (abaxial and adaxial) of leaves of Acer platanoides, Fagus sylvatica, and Sambucus nigra at three developmental stages: unfolding (2–5‐day‐old), young (1.5‐week‐old) and mature leaves (8‐week‐old). FWU and gmin were higher in younger leaves. ΔΨ corresponded to FWU and gmin in all cases but mature leaves of F. sylvatica, where ΔΨ was highest. Most leaves were highly wettable, and at least one leaf surface (adaxial or abaxial) showed a decrease in wettability from unfolding to mature leaves. Young leaves of all studied species showed FWU (unfolding leaves: 14.8 ± 1.1 μmol m−2 s−1), which may improve plant water status and thus counterbalance spring transpirational losses due to high gmin. The high wettability of young leaves probably supported FWU. We observed particularly high FWU and respective high ΔΨ in older leaves of F. sylvatica, possibly aided by trichomes.

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Section: Fwu Minimum Leaf Conductance and Water Potentialsupporting

confidence: 88%

High potential for foliar water uptake in early stages of leaf development of three woody angiosperms

Losso

Dämon

Hacke

et al. 2023

Physiologia Plantarum

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“…Plants obtain water from various sources in desert environments, including rainfall (Zoccatelli et al ., 2019), snowmelt, dew (Matos et al ., 2022), and groundwater (Glanville et al ., 2023; Liu et al ., 2023). Rainfall in deserts is both scarce and unpredictable, characterized by significant year‐to‐year variability (Li et al ., 2016).…”

Section: Plant Root Architecture In Desert Ecosystemsmentioning

confidence: 99%

Plant root mechanisms and their effects on carbon and nutrient accumulation in desert ecosystems under changes in land use and climate

Tariq,

Graciano,

Sardans

et al. 2024

New Phytologist

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SummaryDeserts represent key carbon reservoirs, yet as these systems are threatened this has implications for biodiversity and climate change. This review focuses on how these changes affect desert ecosystems, particularly plant root systems and their impact on carbon and mineral nutrient stocks. Desert plants have diverse root architectures shaped by water acquisition strategies, affecting plant biomass and overall carbon and nutrient stocks. Climate change can disrupt desert plant communities, with droughts impacting both shallow and deep‐rooted plants as groundwater levels fluctuate. Vegetation management practices, like grazing, significantly influence plant communities, soil composition, root microorganisms, biomass, and nutrient stocks. Shallow‐rooted plants are particularly susceptible to climate change and human interference. To safeguard desert ecosystems, understanding root architecture and deep soil layers is crucial. Implementing strategic management practices such as reducing grazing pressure, maintaining moderate harvesting levels, and adopting moderate fertilization can help preserve plant–soil systems. Employing socio‐ecological approaches for community restoration enhances carbon and nutrient retention, limits desert expansion, and reduces CO2 emissions. This review underscores the importance of investigating belowground plant processes and their role in shaping desert landscapes, emphasizing the urgent need for a comprehensive understanding of desert ecosystems.

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“…The main water fluxes in cropping systems include water losses due to (1) transpiration, (2) evaporation and (3) leaching and water gains in the form of (1) precipitation, (2) irrigation and (3) occult precipitation (Datta et al, 2021; Matos et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Water dynamics of cover crops: No evidence for relevant water input through occult precipitation

Selzer

Schubert

2023

J Agronomy Crop Science

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Rising temperatures and disruption of rainfall patterns due to climate change make water a limiting growth factor even in regions of temperate climates. Thus, producing 'more crop per drop' is of utmost importance. While cover crops provide many benefits to cropping systems, their influence on soil water is discussed controversially. While an increase in transpiration can lead to soil water depletion, the reduction of evaporation in combination with possible additional water inputs could provide a water benefit for a succeeding crop. Occult precipitation could be such an additional water input. The objective of this study was to quantify whether cover crops provide a net water benefit over a bare fallow due to the occurrence of occult precipitation. In a 2-year experiment, seven different cover crops were cultivated in pure stands and as a mixture under semi-controlled conditions in a container experiment. Water fluxes and meteorological conditions were closely monitored. Although favourable conditions occurred during both vegetation periods, we found no evidence of occult precipitation. In autumn, soil water was depleted by fast-growing cover crops. In winter, soil water was recharged due to the early preparation of a mulch layer combined with high winter precipitation while in early spring rising temperatures increased transpiration losses of a winter-hardy cover crop, leading to a reduction of soil water. For middle European conditions, this shows that (1) living cover crops do not provide any water benefits and that (2) soil water recharge in winter is highly dependent on meteorological conditions and cover crop management. From a water budget viewpoint, negative effects on a succeeding cash crop can only be prevented if cover crops are terminated early enough for replenishment of soil water.

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Revisiting plant hydrological niches: The importance of atmospheric resources for ground‐rooted plants

Cited by 11 publications

References 138 publications

High potential for foliar water uptake in early stages of leaf development of three woody angiosperms

High potential for foliar water uptake in early stages of leaf development of three woody angiosperms

Plant root mechanisms and their effects on carbon and nutrient accumulation in desert ecosystems under changes in land use and climate

Water dynamics of cover crops: No evidence for relevant water input through occult precipitation

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