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1. Stomatal closure of tomato under drought is driven by an increase in soil–root hydraulic resistance

Author:
Abdalla, Mohanned; Carminati, Andrea; Cai, Gaochao; Javaux, Mathieu; Ahmed, Mutez Ali
Source:
Plant, cell and environment 2021 v.44 no.2 pp. 425-431
ISSN:
0140-7791
Subject:
soil water potential; xylem water potential,   etc   ; drought; environment; hydraulic conductivity; hydraulic resistance; leaves; models; root pressure; stomatal movement; tomatoes; transpiration;     Show all 12 Subjects
Abstract:
... The fundamental question as to what triggers stomatal closure during soil drying remains contentious. Thus, we urgently need to improve our understanding of stomatal response to water deficits in soil and atmosphere. Here, we investigated the role of soil–plant hydraulic conductance (Kₛₚ) on transpiration (E) and stomatal regulation. We used a root pressure chamber to measure the relation between ...
DOI:
10.1111/pce.13939

2. Variation in nocturnal stomatal conductance and development of predawn disequilibrium between soil and leaf water potentials in nine temperate deciduous tree species

Author:
Kangur, Ott; Steppe, Kathy; Schreel, Jeroen D. M.; von der Crone, Jonas S.; Sellin, Arne
Source:
Functional plant biology 2021 v.48 no.5 pp. 483-492
ISSN:
1445-4408
Subject:
leaf water potential; soil water potential,   etc   ; Populus tremula; Quercus robur; drought; pioneer species; soil water; stomatal conductance; stomatal movement; water supply;     Show all 10 Subjects
Abstract:
... It is widely acknowledged that many plant species can keep stomata open during night. We examined how nocturnal stomatal conductance differs among potted saplings of nine temperate tree species from diverse native habitats in wet and dry soil conditions, and how it affects plant predawn water status. Nocturnal stomatal conductance in dry soil conditions was low in all the species (with a maximum v ...
DOI:
10.1071/FP20091

3. Incorporating cultivar-specific stomatal traits into stomatal conductance models improves the estimation of evapotranspiration enhancing greenhouse climate management

Author:
Körner, Oliver; Fanourakis, Dimitrios; Chung-Rung Hwang, Michael; Hyldgaard, Benita; Tsaniklidis, Georgios; Nikoloudakis, Nikolaos; Larsen, Dorthe Horn; Ottosen, Carl-Otto; Rosenqvist, Eva
Source:
Biosystems engineering 2021 v.208 pp. 131-151
ISSN:
1537-5110
Subject:
water potential,   etc   ; cultivars; energy; evapotranspiration; greenhouse effect; greenhouses; model validation; prediction; relative humidity; stomatal conductance;     Show all 10 Subjects
Abstract:
... The effect of considering cultivar differences in stomatal conductance (gₛ) on relative air humidity (RH)-related energy demand was addressed. We conducted six experiments in order to study the variation in evapotranspiration (ETc) of six pot rose cultivars, investigate the underlying processes and parameterise a gₛ-based ETc model. Several levels of crop ETc were realised by adjusting the growth ...
DOI:
10.1016/j.biosystemseng.2021.05.010

4. Primary tissues may affect estimates of cavitation resistance in ferns

Author:
Pittermann, Jarmila; Baer, Alex; Sang, Ying
Source:
The new phytologist 2021 v.231 no.1 pp. 285-296
ISSN:
0028-646X
Subject:
water potential,   etc   ; air; centrifugation; drought tolerance; ferns and fern allies; xylem;     Show all 6 Subjects
Abstract:
... Different methods of measuring cavitation resistance in fern petioles lead to variable results, particularly with respect to the P₅₀ metric. We hypothesised that the fern dictyostele structure affects air entry into the xylem, and therefore impacts the shape of the vulnerability curve. Our study examined this variation by comparing vulnerability curves constructed on petioles collected from evergr ...
DOI:
10.1111/nph.17374

5. Characterization of salicylic acid- and abscisic acid-mediated photosynthesis, Ca2+ and H2O2 accumulation in two distinct phases of drought stress intensity in Brassica napus

Author:
Park, Sang-Hyun; Lee, Bok-Rye; La, Van Hien; Mamun, Md. Al; Bae, Dong-Won; Kim, Tae-Hwan
Source:
Environmental and experimental botany 2021 v.186 pp. 104434
ISSN:
0098-8472
Subject:
leaf water potential,   etc   ; Brassica napus; calcium; drought; leaves; photosynthesis; regression analysis; water stress;     Show all 8 Subjects
Abstract:
... Drought modifies the endogenous hormonal status, which is involved in the regulation of stress responses and tolerance. This study aimed to characterize the drought-responsive hormone-mediated regulation of stress responses based on the time-course of drought intensity. Alterations in H₂O₂, Ca²⁺ and their signaling genes with decreasing leaf water potential (Ψw) were interpreted as being linked to ...
DOI:
10.1016/j.envexpbot.2021.104434

6. Osmoregulation and its actions during the drought stress in plants

Author:
Ozturk, Munir; Turkyilmaz Unal, Bengu; García‐Caparrós, Pedro; Khursheed, Anum; Gul, Alvina; Hasanuzzaman, Mirza
Source:
Physiologia plantarum 2021 v.172 no.2 pp. 1321-1335
ISSN:
0031-9317
Subject:
water potential,   etc   ; cultivars; drought; drought tolerance; metabolism; osmoregulation; osmotolerance; phenology; proline; quaternary ammonium compounds; water stress;     Show all 11 Subjects
Abstract:
... Drought stress, which causes a decline in quality and quantity of crop yields, has become more accentuated these days due to climatic change. Serious measures need to be taken to increase the tolerance of crop plants to acute drought conditions likely to occur due to global warming. Drought stress causes many physiological and biochemical changes in plants, rendering the maintenance of osmotic adj ...
DOI:
10.1111/ppl.13297

7. Towards Vine Water Status Monitoring on a Large Scale Using Sentinel-2 Images

Author:
Laroche-Pinel, Eve; Duthoit, Sylvie; Albughdadi, Mohanad; Costard, Anne D.; Rousseau, Jacques; Chéret, Véronique; Clenet, Harold
Source:
Remote Sensing 2021 v.13 no.9
ISSN:
2072-4292
Subject:
water potential,   etc   ; climate change; drought; peas; reflectance; regression analysis; vegetation; vines; vineyards; water supply; wines;     Show all 11 Subjects
Abstract:
... Wine growing needs to adapt to confront climate change. In fact, the lack of water becomes more and more important in many regions. Whereas vineyards have been located in dry areas for decades, so they need special resilient varieties and/or a sufficient water supply at key development stages in case of severe drought. With climate change and the decrease of water availability, some vineyard regio ...
DOI:
10.3390/rs13091837

8. Linking plant hydraulics and the fast–slow continuum to understand resilience to drought in tropical ecosystems

Author:
Oliveira, Rafael S.; Eller, Cleiton B.; Barros, Fernanda de V.; Hirota, Marina; Brum, Mauro; Bittencourt, Paulo
Source:
Thenew phytologist 2021 v.230 no.3 pp. 904-923
ISSN:
0028-646X
Subject:
water potential,   etc   ; biodiversity; capacitance; carbon; drought; fluid mechanics; hydraulic conductivity; terrestrial ecosystems; tropical rain forests;     Show all 9 Subjects
Abstract:
... Tropical ecosystems have the highest levels of biodiversity, cycle more water and absorb more carbon than any other terrestrial ecosystem on Earth. Consequently, these ecosystems are extremely important components of Earth’s climatic system and biogeochemical cycles. Plant hydraulics is an essential discipline to understand and predict the dynamics of tropical vegetation in scenarios of changing w ...
DOI:
10.1111/nph.17266

9. Seed germination responses to soil hydraulic conductivity and polyethylene glycol (PEG) osmotic solutions

Author:
Camacho, Manuel E.; Heitman, Joshua L.; Gannon, Travis W.; Amoozegar, Aziz; Leon, Ramon G.
Source:
Plant and soil 2021 v.462 no.1-2 pp. 175-188
ISSN:
0032-079X
Subject:
soil water potential,   etc   ; ecology; hydraulic conductivity; plant available water; polyethylene glycol; seed germination; seedling emergence;     Show all 7 Subjects
Abstract:
... AIMS: Seed germination is one of the most important processes in plant biology and ecology because it determines the timing and magnitude of seedling emergence events every growing season influencing community dynamics. Our aim was to determine whether polyethylene glycol (PEG) solutions simulate soil water potential accurately and recreate germination responses to soil water availability. METHODS ...
DOI:
10.1007/s11104-021-04857-5

10. Delineation of groundwater potential zones in lower Rihand River Basin, India using geospatial techniques and AHP

Author:
Verma, Narender; Patel, Ramesh Kumar
Source:
The Egyptian Journal of Remote Sensing and Space Sciences (Online) 2021
ISSN:
1110-9823
Subject:
water potential,   etc   ; basins; drainage; groundwater; land cover; land use; lithology; rain; soil; watersheds; India;     Show all 11 Subjects
Abstract:
... In the present study, an attempt is made to delineate groundwater potential zones in Lower Rihand River Basin using remote sensing, GIS, and Analytical Hierarchical Process (AHP). Multiple data, viz. lithology, lineament density, geomorphology, slope, soil, rainfall, drainage density, relief, landuse/landcover were considered for delineating the groundwater potential zones. All nine thematic layer ...
DOI:
10.1016/j.ejrs.2021.03.005

11. Interannual variability of ecosystem iso/anisohydry is regulated by environmental dryness

Author:
Wu, Genghong; Guan, Kaiyu; Li, Yan; Novick, Kimberly A.; Feng, Xue; McDowell, Nate G.; Konings, Alexandra G.; Thompson, Sally E.; Kimball, John S.; De Kauwe, Martin G.; Ainsworth, Elizabeth A.; Jiang, Chongya
Source:
Thenew phytologist 2021 v.229 no.5 pp. 2562-2575
ISSN:
0028-646X
Subject:
leaf water potential,   etc   ; depth; drought; dry environmental conditions; ecosystems; plant response; satellites; synthesis; variability; vegetation; water;     Show all 11 Subjects
Abstract:
... ●Plants are characterized by the iso/anisohydry continuum depending on how they regulate leaf water potential (ΨL). However, how iso/anisohydry changes over time in response to year‐to‐year variations in environmental dryness and how such responses vary across different regions remains poorly characterized. ●We investigated how dryness, represented by aridity index, affects the interannual variabi ...
DOI:
10.1111/nph.17040

12. Plant carbohydrate depletion impairs water relations and spreads via ectomycorrhizal networks

Author:
Sapes, Gerard; Demaree, Patrick; Lekberg, Ylva; Sala, Anna
Source:
Thenew phytologist 2021 v.229 no.6 pp. 3172-3183
ISSN:
0028-646X
Subject:
water potential,   etc   ; Pinus ponderosa; carbohydrates; carbon; drought; drought tolerance; ectomycorrhizae; fungi; osmoregulation; photosynthesis; seedlings; symbionts; turgor;     Show all 13 Subjects
Abstract:
... Under prolonged drought and reduced photosynthesis, plants consume stored nonstructural carbohydrates (NSCs). Stored NSC depletion may impair the regulation of plant water balance, but the underlying mechanisms are poorly understood, and whether such mechanisms are independent of plant water deficit is not known. If so, carbon costs of fungal symbionts could indirectly influence plant drought tole ...
DOI:
10.1111/nph.17134

13. Norway spruce ecotypes distinguished by chlorophyll a fluorescence kinetics

Author:
Tomášková, Ivana; Pastierovič, Filip; Krejzková, Anna; Čepl, Jaroslav; Hradecký, Jaromír
Source:
Acta physiologiae plantarum 2021 v.43 no.2 pp. 24
ISSN:
0137-5881
Subject:
water potential,   etc   ; Picea abies; chlorophyll; drought; ecotypes; fluorescence; provenance; spectrophotometers; Czech Republic;     Show all 9 Subjects
Abstract:
... Fast kinetics of chlorophyll a fluorescence in three Norway spruce ecotypes was investigated. Spruce ecotypes that come from different parts of the provenance regions were used to establish a common garden experiment in Central Bohemia (Czech Republic) in 1972. The hypothesis was based on the presumption that high-mountain spruce ecotype will benefit less from plain site compared to the mountain a ...
DOI:
10.1007/s11738-020-03190-1

14. Quantifying seed germination response of deteriorated Trigonella foenum-graecum L. seed to temperatures and water potentials: Thermal time, hydrotime and hydrothermal time models

Author:
Teimori, Hasan; Balouchi, Hamidreza; Moradi, Ali; Soltani, Elias
Source:
Journal of applied research on medicinal and aromatic plants 2021 v.20 pp. 100276
ISSN:
2214-7861
Subject:
water potential,   etc   ; Trigonella foenum-graecum; environmental factors; fenugreek; models; seed development; seed germination; seeds; temperature; vigor;     Show all 10 Subjects
Abstract:
... Quantifying the germination behavior of seeds against variable environmental conditions can use as a useful implement for seed ecological studies. Seed vigor depends on the temperature and moisture conditions during seed development and storage. To quantify the effects of temperature and water potential on germination response of fenugreek seeds, thermal time, hydrotime, and hydrothermal time mode ...
DOI:
10.1016/j.jarmap.2020.100276

15. Postharvest temperature and water status influence postharvest splitting susceptibility in summer radish (Raphanus sativus L.)

Author:
Lockley, Rachel A; Beacham, Andrew M; Grove, Ivan G; Monaghan, James M
Source:
Journal of the science of food and agriculture 2021 v.101 no.2 pp. 536-541
ISSN:
0022-5142
Subject:
water potential,   etc   ; Raphanus sativus; agriculture; fruits; humidity; hypocotyls; radishes; shelf life; summer; water content;     Show all 10 Subjects
Abstract:
... BACKGROUND: Splitting is a problem that seriously affects appearance and marketability in a number of fruit and vegetables. In summer radish (Raphanus sativus L.), splitting can occur during growth, harvesting and postharvest. We investigated the factors affecting splitting susceptibility in summer radish cv. Celesta during postharvest handling. RESULTS: Splitting susceptibility was negatively rel ...
DOI:
10.1002/jsfa.10662

16. Spatial and temporal evolution of quantitative magnetic resonance imaging parameters of peach and apple fruit – relationship with biophysical and metabolic traits

Author:
Musse, Maja; Bidault, Kévin; Quellec, Stéphane; Brunel, Béatrice; Collewet, Guylaine; Cambert, Mireille; Bertin, Nadia
Source:
Theplant journal 2021 v.105 no.1 pp. 62-78
ISSN:
0960-7412
Subject:
water potential,   etc   ; apples; biomarkers; evolution; fruit composition; fruiting; magnetism; membrane permeability; mesocarp; peaches; phenotype; solutes; vacuoles;     Show all 13 Subjects
Abstract:
... Fruits are complex organs that are spatially regulated during development. Limited phenotyping capacity at cell and tissue levels is one of the main obstacles to our understanding of the coordinated regulation of the processes involved in fruit growth and quality. In this study, the spatial evolution of biophysical and metabolic traits of peach and apple fruit was investigated during fruit develop ...
DOI:
10.1111/tpj.15039

17. Seasonal thaw and landscape position determine foliar functional traits and whole‐plant water use in tall shrubs on the low arctic tundra

Author:
Black, Katherine L.; Wallace, Cory A.; Baltzer, Jennifer L.
Source:
The new phytologist 2021 v.231 no.1 pp. 94-107
ISSN:
0028-646X
Subject:
water potential,   etc   ; drainage; ecological function; ecophysiology; highlands; landscape position; nutrient availability; sap flow; shrubs; topographic slope; tundra;     Show all 11 Subjects
Abstract:
... Climate warming is driving tundra shrub expansion with implications for ecosystem function and regional climate. Understanding associations between shrub ecophysiological function, distribution and environment is necessary for predicting consequences of expansion. We evaluated the role of topographic gradients on upland shrub productivity to understand potential constraints on shrub expansion. At ...
DOI:
10.1111/nph.17375

18. Quantifying water stress and temperature effects on camelina (Camelina sativa L.) seed germination

Author:
Hosseini Sanehkoori, Fatemeh; Pirdashti, Hemmatollah; Bakhshandeh, Esmaeil
Source:
Environmental and experimental botany 2021 v.186 pp. 104450
ISSN:
0098-8472
Subject:
water potential,   etc   ; Camelina sativa; biofuels; biopolymers; cold tolerance; cosmetics; oilseed crops; seed germination; seed size; seedling growth; temperature; water stress;     Show all 12 Subjects
Abstract:
... Camelina (Camelina sativa (L.) Crantz; Brassicaceae) is known as an important and low-input oilseed crop, which is widely used in the production of biopolymers, biofuels, cosmetics, food, and feed. One of the main problems of camelina cultivation is related to seed size which can directly influence its germination, seedling growth, and development. Therefore, this study was performed to evaluate t ...
DOI:
10.1016/j.envexpbot.2021.104450

19. Unravelling foliar water uptake pathways: The contribution of stomata and the cuticle

Author:
Guzmán‐Delgado, Paula; Laca, Emilio; Zwieniecki, Maciej A.
Source:
Plant, cell and environment 2021 v.44 no.6 pp. 1728-1740
ISSN:
0140-7791
Subject:
water potential,   etc   ; Prunus dulcis; Pyrus communis; abscisic acid; environment; fusicoccin; hydraulic conductivity; liquids; rehydration; water uptake; water vapor;     Show all 11 Subjects
Abstract:
... Plants can absorb water through their leaf surfaces, a phenomenon commonly referred to as foliar water uptake (FWU). Despite the physiological importance of FWU, the pathways and mechanisms underlying the process are not well known. Using a novel experimental approach, we parsed out the contribution of the stomata and the cuticle to FWU in two species with Mediterranean (Prunus dulcis) and tempera ...
DOI:
10.1111/pce.14041

20. Drought tolerance of three ethnomedicinal shrubs evaluated based on their seed germination rates at different drought levels induced by using polyethylene glycol (PEG₆₀₀₀)

Author:
Dadach, Mohammed; Mehdadi, Zoheir
Source:
Folia oecologica 2021 v.48 no.1 pp. 49-54
ISSN:
1338-7014
Subject:
water potential,   etc   ; Sideritis; Stachys; coasts; dormancy; drought; drought tolerance; polyethylene glycol; rain; seed germination; water stress; Algeria;     Show all 12 Subjects
Abstract:
... Sideritis incana, Stachys ocymastrum, and Thymus fontanesii are medicinal plants belonging to the Lamiaceae family and occurring in semi-arid lands in northern Algeria and in many other countries along the Mediterranean coastline. Despite the ecological and economic interests and also the questionable future these species may meet in their natural habitats, various aspects of their seed biology ha ...
DOI:
10.2478/foecol-2021-0006