Limited effects of xylem anatomy on embolism resistance in cycad leaves DOI
Guo‐Feng Jiang,

B. Qin,

Yu‐Kun Pang

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: 243(4), P. 1329 - 1346

Published: June 19, 2024

Drought-induced xylem embolism is a primary cause of plant mortality. Although c. 70% cycads are threatened by extinction and extant diversified during period increasing aridification, the vulnerability to spread has been overlooked. We quantified drought-induced embolism, pressure-volume curves, in situ water potentials, suite anatomical traits leaf pinnae rachises for 20 cycad species. tested whether were linked hydraulic safety cycads. Compared with other major vascular clades, exhibited similar resistance angiosperms pteridophytes but more vulnerable than noncycad gymnosperms. All had both tracheids vessels, proportions which unrelated resistance. Only vessel pit membrane fraction was positively correlated resistance, contrary angiosperms. Water potential at turgor loss significantly among Our results show that exhibit low - particularly vessels may influence together tracheids. This study highlights importance understanding mechanisms drought evolutionarily unique lineages like

Language: Английский

Gold perfusion experiments support the multi‐layered, mesoporous nature of intervessel pit membranes in angiosperm xylem DOI
Ya Zhang, Luciano Pereira, Lucian Kaack

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: 242(2), P. 493 - 506

Published: Feb. 25, 2024

Fluid transport across intervessel pit membranes of angiosperm xylem plays a major role in plant transpiration, with resistance largely depending on pore constriction sizes. Traditionally, fluid particles traversing are assumed to cross single instead multiple constrictions. We tested multi-layered membrane model eight species by estimating the size frequency constrictions relation thickness and compared modelled data perfusion characteristics nanoscale gold based transmission electron microscopy. The showed similar patterns measured number perfused particle sizes inside membranes, although values were 10-50 times below data. Small enter most easily, especially when injected thin membranes. trapping becomes more likely increasing thickness. While quantitative differences between experimental due various practical limitations, their qualitative agreement supports Pore 5 50 nm realistic, confirm mesoporous nature

Language: Английский

Citations

6
Rootstocks affect the vulnerability to embolism and pit membrane thickness in Citrus scions DOI Creative Commons
Marcela T. Miranda, Gabriel S. Pires, Luciano Pereira

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: 47(8), P. 3063 - 3075

Published: April 25, 2024

Abstract Embolism resistance of xylem tissue varies among species and is an important trait related to drought resistance, with anatomical attributes like pit membrane thickness playing role in avoiding embolism spread. Grafted Citrus trees are commonly grown orchards, the rootstock being able affect whole plant. Here, we evaluated how rootstocks vulnerability scion using several rootstock/scion combinations. Scions ‘Tahiti’ acid lime, ‘Hamlin’, ‘Pera’ ‘Valencia’ oranges grafted on a ‘Rangpur’ lime exhibit similar embolism. In field‐grown trees, measurements leaf water potential did not suggest significant formation during dry season, while stomata presented isohydric response declining availability. When orange scions were ‘IAC 1710’ citrandarin, ‘Sunki Tropical’ mandarin or ‘Swingle’ citrumelo rootstocks, variation intervessel was found. The rootstock, which known for its induced thicker membranes scion, resulting higher than other rootstocks. Similarly, citrandarin generated increased highly relevant citriculture.

Language: Английский

Citations

6
Electrical Phenomena in Trees and Wood: A Review DOI Creative Commons
Vikash Ghildiyal, Clemens Altaner, W.J.B. Heffernan

et al.

Current Forestry Reports, Journal Year: 2025, Volume and Issue: 11(1)

Published: Jan. 2, 2025

This review covers electrical phenomena originating from the physical properties of wood, relevant to tree biology and timber industry applications. Membrane-associated cellular like action potentials are excluded. Trees exhibit diverse bioelectric processes origin. The wood hold promise for advancing processing, developing smart materials, while enhancing our understanding tree-environment interactions. Streaming piezoelectric have long histories but now reinterpreted based on better plants. sap flow, discounted in 2000s, been reinstated through recent publications addressing past inconsistencies with current data xylem structure. Electro-osmotic flow is gaining new applications drying. Wood, previously considered weakly piezoelectric, shows much stronger activity after fungal degradation, spurring interest practical underlying mechanism – understood findings structure, deposition deformation cellulose. Internal variation electric (conductive dielectric) green logs facilitates innovative quality mapping methods. Emerging research perturbation atmospheric soil fields by trees offers insights into inter-organism encompasses measurement methods; electrokinetic phenomena, including streaming electro-osmotic drying; heating; technologies dielectric properties; wood-based electronics; electromechanical effect triboelectrification; electricity around trees; electrotaxis. Future should explore electro-osmosis its Electric living trees, generated ion-transport mechanisms, need further exploration elucidate charge separation processes.

Language: Английский

Citations

0
Die-off after an extreme hot drought affects trees with physiological performance constrained by a more stressful abiotic niche DOI
Guillermo Gea‐Izquierdo, Macarena Férriz, María Conde

et al.

Agricultural and Forest Meteorology, Journal Year: 2025, Volume and Issue: 363, P. 110430 - 110430

Published: Feb. 7, 2025

Language: Английский

Citations

0
Gas diffusion kinetics in relation to embolism formation and propagation in angiosperm xylem: a mini-review DOI
Lincon Matheus Araujo Silva,

B. Bujnowski,

Luciano Pereira

et al.

Acta Horticulturae, Journal Year: 2025, Volume and Issue: 1419, P. 123 - 134

Published: Feb. 1, 2025

Language: Английский

Citations

0
Time-based shifts in xylem vulnerability curves of angiosperms based on the flow-centrifuge method DOI Creative Commons
Luciano M. Silva, Jonas Pfaff, Luciano Pereira

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: April 3, 2024

Abstract Centrifuges provide a fast and standard approach to quantify embolism resistance of xylem in vulnerability curves (VCs). Traditionally, formation centrifuge experiments is assumingly driven by speed, thus pressure, but unaffected spin time. Here, we explore what extent not only pressure also time dependent, hypothesise that time-stable hydraulic conductivity (K h ) values could shift VCs. We quantified time-based shifts flow- VCs their parameter estimations for six angiosperm species measuring K at regular intervals over 15 minutes spinning particular speed before higher was applied the same sample. compared various per sample based on cumulative time, modelled relationship between , water potential (Ψ), Time-based changes showed considerable increases decreases low high speeds, respectively, which generally shifted towards more positive Ψ values. Values corresponding 50% loss ( P 50 increased up 0.72 MPa Acer pseudoplatanus average 8.5% all did consider By employing an asymptotic exponential model, estimated improved statistical significance 5 6 studied. This model revealed instability short times, flow-centrifuges followed saturating growth curve. Although remains major determinant formation, should be considered avoid overestimation resistance. spin-time artefact species- specific, likely relatively slow gas diffusion associated with spreading. It can minimized determining each without considerably extending experimental construct

Language: Английский

Citations

1
The potential link between gas diffusion and embolism spread in angiosperm xylem: Evidence from flow‐centrifuge experiments and modelling DOI Creative Commons
Luciano M. Silva, Luciano Pereira, Lucian Kaack

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: 47(12), P. 4977 - 4991

Published: Aug. 9, 2024

Abstract Understanding xylem embolism formation is challenging due to dynamic changes and multiphase interactions in conduits. Here, we hypothesise that spread involves gas diffusion xylem, affected by time. We measured hydraulic conductivity (K h ) flow‐centrifuge experiments over 1 at a given pressure temperature for stem samples of three angiosperm species. Temporal K 5, 22, 35°C, various pressures were compared modelled concentration recently embolised vessel the centre centrifuge sample. logarithmic species‐specific. Maximum relative increases between 6% 40% happened 22°C low centrifugal speed (<3250 RPM), while maximum decreases 41% 61% occurred higher speeds. These reductions experimentally shown be associated with temporal increase samples, which was likely embolized vessels. Although mostly pressure‐driven, our experimental data indicate time, conduit characteristics, are involved their potential role diffusion. Gas diffusion, however, does not seem cover entire process spread.

Language: Английский

Citations

1
Unveiling the Potential: Asymmetric Supercapacitors with Conductive Polymers/Ti3C2Tx/Ni3S4 Electrodes Deliver High Energy Densities DOI
Xuguang Wang,

Kai Song,

Hongtao Yang

et al.

Electrochimica Acta, Journal Year: 2024, Volume and Issue: unknown, P. 145155 - 145155

Published: Sept. 1, 2024

Language: Английский

Citations

1
Embolism propagation does not rely on pressure only: time-based shifts in xylem vulnerability curves of angiosperms determine the accuracy of the flow-centrifuge method DOI
Luciano M. Silva, Jonas Pfaff, Luciano Pereira

et al.

Tree Physiology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Centrifuges provide a fast approach to quantify embolism resistance of xylem in vulnerability curves (VCs). Since formation is assumingly driven by pressure only, spin time not standardised for flow centrifuge experiments. Here, we explore what extent could be spin-time dependent, and hypothesise that changes hydraulic conductivity (Kh) would shift VCs towards higher water potential (Ψ) values over time. We quantified time-based shifts flow-centrifuge their parameter estimations six angiosperm species measuring Kh 15 minutes spinning at particular speed, before speed was applied the same sample. compared various per sample based on cumulative time, modelled relationship between Kh, Ψ, spin-time. Time-based showed considerable increases decreases low high speeds, respectively, which generally shifted more positive Ψ values. Values corresponding 50% loss (P50) became less negative up 0.72 MPa Acer pseudoplatanus, average 8.5% all did consider By employing an asymptotic exponential model, estimated time-stable improved statistical significance 5 6 studied. This model also revealed instability short times with flow-centrifuges following saturating growth curve. Although remains major determinant formation, should considered because considering time-dependent stability overestimates resistance. artefact species-specific, likely relatively slow gas diffusion associated propagation. The accuracy determining each without considerably extending experimental construct VCs.

Language: Английский

Citations

1
Limited effects of xylem anatomy on embolism resistance in cycad leaves DOI
Guo‐Feng Jiang,

B. Qin,

Yu‐Kun Pang

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: 243(4), P. 1329 - 1346

Published: June 19, 2024

Drought-induced xylem embolism is a primary cause of plant mortality. Although c. 70% cycads are threatened by extinction and extant diversified during period increasing aridification, the vulnerability to spread has been overlooked. We quantified drought-induced embolism, pressure-volume curves, in situ water potentials, suite anatomical traits leaf pinnae rachises for 20 cycad species. tested whether were linked hydraulic safety cycads. Compared with other major vascular clades, exhibited similar resistance angiosperms pteridophytes but more vulnerable than noncycad gymnosperms. All had both tracheids vessels, proportions which unrelated resistance. Only vessel pit membrane fraction was positively correlated resistance, contrary angiosperms. Water potential at turgor loss significantly among Our results show that exhibit low - particularly vessels may influence together tracheids. This study highlights importance understanding mechanisms drought evolutionarily unique lineages like

Language: Английский

Citations

0