Environmental and Experimental Botany, Год журнала: 2023, Номер 210, С. 105315 - 105315
Опубликована: Март 28, 2023
Язык: Английский
Annals of Botany, Год журнала: 2023, Номер 131(5), С. 839 - 850
Опубликована: Март 22, 2023
Many annual grasses exhibit drought-avoiding life cycles in which rapid reproduction must be completed before soil water is exhausted. This strategy would seem to require a hydraulic system capable of sustaining at all costs the rest plant, yet little known about whole-plant structure vulnerability grasses.We examine water-stress-induced xylem cavitation roots, flag leaves, and basal apical regions peduncles wheat (Triticum aestivum L. 'Krichauff') understand staged failure function severe drought. The functionality segmented vulnerabilities tested by conducting rehydration experiments after acute dehydration.We show that supply more drought resistant than leaves due greater resistance, ensuring pathway can maintained from roots reproductive tissues even deficit. Differential compared following confirmed seed stress sufficient completely cavitate leaf vessels.These results demonstrate proportion between seeds remains functional under extreme dehydration, suggesting traits this key grass species reflect its strategy.
Язык: Английский
Процитировано
12
Membranes, Год журнала: 2021, Номер 11(12), С. 984 - 984
Опубликована: Дек. 15, 2021
Heavy metal stress (HMS) is one of the most destructive abiotic stresses which seriously affects growth and development plants. Recent studies have shown significant progress in understanding molecular mechanisms underlying plant tolerance to HMS. In general, three core signals are involved plants’ responses HMS; these mitogen-activated protein kinase (MAPK), calcium, hormonal (abscisic acid) signals. addition signal components, other regulatory factors, such as microRNAs membrane proteins, also play an important role regulating HMS Membrane proteins interact with highly complex heterogeneous lipids cell environment. The function affected by interactions between lipid-membrane proteins. Our review findings indicate possibility protein-lipid-metal ion homeostasis cells. this review, we investigated specific substrate recognition homeostasis. possible interaction networks upstream downstream pathways developed. addition, ions, discussed provide new ideas for studying
Язык: Английский
Процитировано
26
Plant and Soil, Год журнала: 2022, Номер 478(1-2), С. 349 - 370
Опубликована: Май 19, 2022
Root water transport, which critically contributes to the plant status and thereby productivity, has been object of extensive experimental theoretical studies. However, root systems represent an intricate assembly cells in complex architectures, including many tissues at distinct developmental stages. Our comprehension where how molecular actors integrate their function order provide with its hydraulic properties is therefore still limited.Based on current literature prospective discussions, this review addresses transport can be experimentally measured, what known about underlying actors, elementary processes are scaled up numerical/mathematical models.The framework procedures that use today have established a few decades ago. recent years seen appearance new techniques models enhanced resolution, down portion or tissue level. These advances pave way for better dynamics uptake by roots soil.
Язык: Английский
Процитировано
18
Frontiers in Plant Science, Год журнала: 2022, Номер 13
Опубликована: Сен. 13, 2022
To date, Cd contamination of cropland and crops is receiving more attention around the world. As a plant hormone, abscisic acid (ABA) plays an important role in stress response, but its effect on uptake translocation varies among species. In some species, such as Arabidopsis thaliana , Oryza sativa, Brassica chinensis Populus euphratica Lactuca sativa Solanum lycopersicum ABA inhibits translocation, while other photeinocarpum Boehmeria nivea severs opposite effect. Interestingly, differences methods concentrations addition also triggered result Sedum alfredii . The regulatory mechanism involved accumulation plants still not well-established. Therefore, we summarized latest studies synthesis pathway comparatively analyzed physiological molecular mechanisms related to uptake, detoxification at different or We believe that control tissues can be achieved by appropriate application plants.
Язык: Английский
Процитировано
17
New Phytologist, Год журнала: 2023, Номер 239(4), С. 1239 - 1252
Опубликована: Июнь 12, 2023
The propagation of xylem embolism throughout the root systems drought-affected plants remains largely unknown, despite this process being comparatively well characterized in aboveground tissues. We used optical and X-ray imaging to capture across intact bread wheat (Triticum aestivum L. 'Krichauff') subjected drying. Patterns vulnerability cavitation were examined investigate whether may vary based on size placement entire system. Individual exhibited similar mean whole system vulnerabilities but showed enormous 6 MPa variation within their component roots (c. 50 per plant). Xylem typically initiated smallest, peripheral parts moved inwards upwards towards collar last, although trend was highly variable. This pattern spread likely results sacrifice replaceable small while preserving function larger, more costly central roots. A distinct embolism-spread belowground has implications for how we understand impact drought as a critical interface between plant soil.
Язык: Английский
Процитировано
11
Trees Forests and People, Год журнала: 2025, Номер 19, С. 100779 - 100779
Опубликована: Янв. 11, 2025
Язык: Английский
Процитировано
0
Journal of Plant Research, Год журнала: 2025, Номер unknown
Опубликована: Фев. 8, 2025
Abstract Water conservation in fine roots can be important for the adaptation of trees to cold, nutrient-poor ecosystems. Although pressure–volume (p-v) curve traits are commonly used assess leaf water conservation, little is known about their intraspecific variation and association with root functional traits, such as morphology chemistry. Here, we aimed determine p-v Betula ermanii Abies mariesii at 2,000 2,500 m elevations explore morphological chemical a subalpine forest. Turgor loss point (π tlp ), relative content π , osmotic potential full hydration, capacitance turgor (C ft ) were evaluated traits. Additionally, diameter, specific length, tissue density (RTD) assessed nitrogen (N) was measured trait. For A roots, C lower, more negative than m. The B remained unchanged elevation. There strong correlations between RTD N especially A. . These results indicated adjusted achieved higher elevations. particularly reflected diverse tree strategies environmental acclimation fine-root carbon economy. Our findings highlighted importance adjusting relation cold regions, evergreen coniferous species. revealed basis capacity by preserving function under stress conditions enabling prolonged resource acquisition
Язык: Английский
Процитировано
0
Acta Horticulturae, Год журнала: 2025, Номер 1419, С. 95 - 104
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
0
Plant Biology, Год журнала: 2025, Номер unknown
Опубликована: Март 4, 2025
Abstract The freezing‐induced formation of embolisms in xylem conduits presents one the challenges faced by evergreen leaves frost‐experiencing regions. Given that probability permanent embolism is related to conduit diameter, we hypothesized diameters vessels should be smaller than deciduous leaves. We used live botanical garden collections sample 21 and 47 species originating from various temperate biotopes representing a broad taxonomic diversity. determined largest their petioles. After controlling for conductive path length, were significantly those Our results suggest selective advantage vessel diameter reduction leaf habit cold climates. This result recapitulates contrast between previously reported stems. Moreover, strong scaling relationships with distance tip found both forms evolutionary associated may necessitate size reduction, consistent trend documented other studies.
Язык: Английский
Процитировано
0
Proceedings of the National Academy of Sciences, Год журнала: 2025, Номер 122(13)
Опубликована: Март 20, 2025
Plant hydraulic dysfunction by embolism formation can impair photosynthesis, growth, and reproduction and, in severe cases, lead to death. Embolism reversal, or “refilling,” is a hypothesized adaptive process which xylem functionality rapidly sustainably restored. This study investigated refilling during recovery from drought stress using entirely noninvasive measurements of the same plants. These results were considered relation functional traits address long-standing gaps understanding consequences stress. Leaf stem as well transpiration, water potential characterized nondestructively on intact barnyard grass plants an acute event. Plants rewatered returned growth conditions for 10 d, time transpiration monitored. declines leaf gas exchange occurred mostly between −1.0 MPa −2.0 MPa, whereas −3.0 −4.0 MPa. In all measured plants, included levels up 88%, reversed completely within 24 h after rewatering, this supported conditions. provides direct evidence complete refilling. present clear need elucidate underlying mechanisms significance phenomenon its prevalence nature.
Язык: Английский
Процитировано
0