Barley (<i>Hordeum vulgare</i> L.) physiology including nutrient uptake affected by plant growth regulators under field drought conditions

Askarnejad, Mohammad Reza; Soleymani, Ali; Javanmard, Hamid Reza

doi:10.1080/01904167.2021.1889593

Cited by 10 publications

(8 citation statements)

References 33 publications

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“…However, the effect of bacteria-synthesizing phytohormones on this process still needs to be studied. The results of various studies indicate both an increase in the amount of grain protein, including gluten, under the influence of bacteria [ 40 , 41 ], and the absence of this effect [ 42 ], depending on the wheat variety and bacterial strain. Since the amount of grain gluten is important in baking bread, stimulating the accumulation of gluten can be considered a positive property of bacteria.…”

Section: Discussionmentioning

confidence: 99%

PGP-Bacterium Pseudomonas protegens Improves Bread Wheat Growth and Mitigates Herbicide and Drought Stress

Бакаева

Chetverikov

Timergalin

et al. 2022

Plants

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The reaction of plants to simultaneous stress action and treatment with biological stimulants still remains poorly studied. Laboratory and field experiments have been conducted to study the growth and yield of bread wheat (Triticum aestivum L.) of the variety Ekada 113; stress markers and quantitative ratios of phytohormones in plants under insufficient soil moisture; the effects of spraying with herbicide containing 2,4-D and dicamba and growth-stimulating bacterium Pseudomonas protegens DA1.2; and combinations of these factors. Under water shortage conditions, spraying plants with Chistalan reduced their growth compared to non-sprayed plants, which was associated with inhibition of root growth and a decrease in the content of endogenous auxins in the plants. Under conditions of combined stress, the treatment of plants with the strain P. protegens DA1.2 increased the IAA/ABA ratio and prevented inhibition of root growth by auxin-like herbicide, ensuring water absorption by the roots as well as increased transpiration. As a result, the content of malondialdehyde oxidative stress marker was reduced. Bacterization improved the water balance of wheat plants under arid field conditions. The addition of bacterium P. protegens DA1.2 to the herbicide Chistalan increased relative water content in wheat leaves by 11% compared to plants treated with herbicide alone. Application of the bacterial strain P. protegens DA1.2 increased the amount of harvested grain from 2.0–2.2 t/ha to 3.2–3.6 t/ha. Thus, auxin-like herbicide Chistalan and auxin-producing bacterium P. protegens DA1.2 may affect the balance of phytohormones in different ways. This could be the potential reason for the improvement in wheat plants’ growth during dry periods when the bacterium P. protegens DA1.2 is included in mixtures for weed control.

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Section: Discussionmentioning

confidence: 99%

PGP-Bacterium Pseudomonas protegens Improves Bread Wheat Growth and Mitigates Herbicide and Drought Stress

Бакаева

Chetverikov

Timergalin

et al. 2022

Plants

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“…Morpho-physiological analysis revealed that water deficiency stress caused growth impairment in the Giza 134 plants. filling period, number of kernels per spike, number of spikes, and grain yields (Elakhdar et al, 2022;Hasanuzzaman et al, 2018;Askarnejad et al, 2021). Stomatal closure plays a vital role in the adaptive system that plants use to minimize water loss and withstand drought.…”

Section: Water Deficit Triggers a Morpho-physiological Responsementioning

confidence: 99%

“…Photosynthetic pigments and photosynthesis rates are also severely influenced by drought stress (Pinheiro and Chaves, 2011;Tezara et al, 1999). Water stress reduces the concentration of chlorophyll a and b in the chloroplasts (Askarnejad et al, 2021). Moreover, drought promotes biochemical and physiological responses such as carbohydrates, mineral elements, lipids, hormones, and nucleic acids, which could impact the growth and productivity of crops (Iqbal et al, 2021;Liang et al, 2023;Sairam and Tyagi, 2004).…”

Section: Introductionmentioning

confidence: 99%

Genome‐wide transcriptomic and functional analyses provide new insights into the response of spring barley to drought stress

Elakhdar,

El‐Naggar,

Kubo

et al. 2023

Physiologia Plantarum

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Drought is a major abiotic stress that impairs the physiology and development of plants, ultimately leading to crop yield losses. Drought tolerance is a complex quantitative trait influenced by multiple genes and metabolic pathways. However, molecular intricacies and subsequent morphological and physiological changes in response to drought stress remain elusive. Herein, we combined morpho‐physiological and comparative RNA‐sequencing analyses to identify core drought‐induced marker genes and regulatory networks in the barley cultivar ‘Giza134’. Based on field trials, drought‐induced declines occurred in crop growth rate, relative water content, leaf area duration, flag leaf area, concentration of chlorophyll (Chl) a, b and a + b, net photosynthesis, and yield components. In contrast, the Chl a/b ratio, stoma resistance, and proline concentration increased significantly. RNA‐sequence analysis identified a total of 2462 differentially expressed genes (DEGs), of which 1555 were up‐regulated and 907 were down‐regulated in response to water‐deficit stress (WD). Comparative transcriptomics analysis highlighted three unique metabolic pathways (carbohydrate metabolism, iron ion binding, and oxidoreductase activity) as containing genes differentially expressed that could mitigate water stress. Our results identified several drought‐induced marker genes belonging to diverse physiochemical functions like chlorophyll concentration, photosynthesis, light harvesting, gibberellin biosynthetic, iron homeostasis as well as Cis‐regulatory elements. These candidate genes can be utilized to identify gene‐associated markers to develop drought‐resilient barley cultivars over a short period of time. Our results provide new insights into the understanding of water stress response mechanisms in barley.

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“…Barley, a resilient crop cultivated in both highly productive agricultural systems and marginal subsistence environments, holds the position of the fourth most important cereal crop globally, following wheat, maize, and rice [14,15]. Although its direct contribution to human food may be minor, the potential for new applications that leverage the health benefits of whole grains and beta-glucans is significant [16].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Nitrogen Application for Enhanced Barley Resilience: A Comprehensive Study on Drought Stress and Nitrogen Supply for Sustainable Agriculture

Olšovská,

Sytar,

Kováčik

2024

Sustainability

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Soil water scarcity hinders crop productivity globally, emphasizing the imperative for sustainable agriculture. This study investigated the role of nitrogen in alleviating drought stress in barley. Parameters such as relative water content, photosynthetic rate, stomatal conductance, mesophyll concentration of CO2, total leaf nitrogen, grain yield, total organic nitrogen content, starch content, and macronutrient concentrations (N, P, K, Ca, Mg) were examined. The optimal grain yield (3.73 t·ha−1) was achieved with 1 g of nitrogen per container (near 200 kg N hectare−1) under ideal moisture conditions. However, under drought stress, nitrogen supply variants (1 g and 2 g per container) exhibited a significant decrease in photosynthetic rate (Pn), NRA activities, and a notable increase in Ci values. Stomatal conductance exhibited a substantial decrease by 84% in the early growth phase, especially with a 2 g dose of nitrogen supply. Nitrogen enhanced crude protein levels, yet both drought stress and nitrogen application reduced grain weight and starch content. Nitrogen effectively improved metabolic processes under drought, particularly in earlier growth stages (e.g., tillering). This research highlights the importance of sustainable agricultural practices related to the growth stage of barley, emphasizing nitrogen optimization to enhance crop resilience in water-scarce environments. The results underscore the intricate interplay between nitrogen fertilization, drought stress, and crop yield, indicating benefits during initial stress exposure but detrimental effects in subsequent growth stages.

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Barley (Hordeum vulgare L.) physiology including nutrient uptake affected by plant growth regulators under field drought conditions

Cited by 10 publications

References 33 publications

PGP-Bacterium Pseudomonas protegens Improves Bread Wheat Growth and Mitigates Herbicide and Drought Stress

PGP-Bacterium Pseudomonas protegens Improves Bread Wheat Growth and Mitigates Herbicide and Drought Stress

Genome‐wide transcriptomic and functional analyses provide new insights into the response of spring barley to drought stress

Optimizing Nitrogen Application for Enhanced Barley Resilience: A Comprehensive Study on Drought Stress and Nitrogen Supply for Sustainable Agriculture

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