Vulnerability of Xylem Embolism in Maize Cultivars with Different Drought Tolerance under Water and Salt Stress

Agronomy, Journal Year: 2024, Volume and Issue: 14(3), P. 438 - 438

Published: Feb. 23, 2024

Water deficit and soil salinization are the primary abiotic stress factors hindering maize growth. To assess effect of water salt on xylem embolism in investigate relationship between drought resistance vulnerability, a greenhouse experiment was designed using two cultivars, Zhengdan 958 (drought-resistant) Denghai 605 (drought-sensitive). Four treatments were included: control (CK), (WD), (SS), combined (WS). Various hydraulic characteristic indicators, such as stem potential, leaf specific conductivity (Ks) percentage loss (PLC), analyzed. Specific curves vulnerability constructed, safety margin (HSM) determined based stomatal conductance (Gs). The results indicated that not correlated. Compared to 605, had lower maximum Ksmax P50 values (xylem potential at 50% PLC) all treatments, indicating transport capacity but stronger embolism. Under single-cultivar conditions, greater inhibitory HSM compared deficit; thus, more severe found under stress. different treatment larger than showing wider range overall superior security. summarize, inhibited efficiency stems, drought-resistant cultivars showed margins.

Language: Английский

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Marine and Salt-Tolerant Microorganisms as Promising Plant Growth Promoting Bioinoculants for Plant Stress Mitigation and Sustainable Agriculture

Egyptian Journal of Botany, Journal Year: 2024, Volume and Issue: 0(0), P. 0 - 0

Published: April 20, 2024

Utilizing every square inch of arable land for crop production is essential ensuring the food and nutritional security world's growing population, given limited amount water resources available. Microorganisms possess many bioactive metabolites, but not all microorganisms exhibit this characteristic. Marine live in a very complicated habitat are exposed to extreme conditions; adapt, they manage possess, among others, diverse array unique secondary including alkaloids, terpenoids, polyketides, quinones. These metabolites anti-inflammatory, antimicrobial, anti-tumor properties. Moreover, marine bacteria metal tolerance contribute significantly remediation soil polluted with heavy metals. Biotechnologies can optimize output by taking advantage these soil-plant dynamics, which could help establish new sustainable agriculture framework. In situation, much research has focused on complex relationships between plants soil-dwelling symbiotic microbes. play pivotal role enhancing ecological prosperity inside their indigenous environments. This lead improved survival performance field conditions. Plant growth-promoting (PGPMs) crucial augmenting synthesis have ability modulate plant metabolome under environmental stress Therefore, review aims present influence microbes, especially marine-derived promoting growth altering its response different stressors.

Language: Английский

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Combination of plant and soil water potential monitoring and modelling demonstrates soil-root hydraulic disconnection during drought

Plant and Soil, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

In grapevines and other deep-rooting plants, heterogeneous drying from the surface to deeper soil layers drives water extraction by roots. Modelling measurements have shown that dry soils, especially with sandy texture, create abrupt potential gradient in rhizosphere. At scale of thin contact between roots, hydraulic continuity could be lost at soil-root interface conditions. This study aimed understand how multiscale interactions roots affect grapevine root uptake potential. Using a physically-based model, implementing rhizosphere system properties, loss conditions, we quantified belowground conductances their impact on different types vertical properties heterogeneity. Soil-root disconnection prevented plant feeling shallowest horizons avoiding very negative trunk potentials, moved towards wet horizons. The main bottleneck soil-plant during drought is soil-texture dependent, limiting subplot, loamy subplot. By highlighting key roles hydraulics, hydraulics status, edaphic this enhanced our mechanistic understanding relations limited

Language: Английский

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Thiamine (vitamin B1) helps to regulate wheat growth and yield under water limited conditions by adjusting tissue mineral content, cytosolutes and antioxidative enzymes

Plant Growth Regulation, Journal Year: 2023, Volume and Issue: 101(3), P. 629 - 642

Published: July 26, 2023

Language: Английский

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Ácidos húmicos inducen crecimiento y protección contra el estrés hídrico en maíces nativo de México

Ecosistemas y Recursos Agropecuarios, Journal Year: 2024, Volume and Issue: 11(1)

Published: Feb. 20, 2024

En condiciones controladas, se ha demostrado que la aplicación de sustancias húmicas (SH) favorece el crecimiento y desarrollo las plantas. Sin embargo, evidencia científica en campo cultivo temporal sido escasamente documentada. El objetivo esta investigación, realizada IPN-CIIDIR Oaxaca año 2019, fue caracterizar los ácidos húmicos (AH) extraídos vermicomposta residuos sólidos urbanos empleando técnicas químicas espectroscópicas, evaluar efecto su vía radical etapa reproductiva, con riego déficit hídrico inducido, tres selecciones maíz (Zea mays L.) nativas regiones Oaxaca, México, cultivadas campo. Los AH promovieron mayores valores altura planta, diámetro del tallo producción biomasa aérea, presencia inducido. contenido relativo agua prolina también estimulado, así como clorofilas a, b (a+b). efectos negativos causados por un estrés inducido fueron atenuados AH. procedentes estimularon parámetros fase reproductiva e indujeron protección antiestrés cuando limitó uso riego.

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