Antioxidant Agriculture for Stress-Resilient Crop Production: Field Practice

Antioxidants, Journal Year: 2024, Volume and Issue: 13(2), P. 164 - 164

Published: Jan. 27, 2024

Oxidative stress, resulting from the excessive production of reactive oxygen species, is a common and major cause cellular damage in plants exposed to various abiotic stresses. To address this challenge, we introduce concept antioxidant agriculture as comprehensive strategy improve stress tolerance thus crop productivity by minimizing oxidative levels field environment. This encompasses diverse range approaches, including genetic engineering, exogenous application agents, microbial inoculation, agronomic practices, reinforce plant’s intrinsic defense system mitigate stress. We present recent successful studies measures that have been validated conditions, along with our perspective on achieving agriculture.

Language: Английский

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Choline Dehydrogenase Contributes to Salt Tolerance in Dunaliella through Betaine Synthesis

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(2)

Published: March 1, 2024

In Dunaliella tertiolecta, a microalga renowned for its extraordinary tolerance to high salinity levels up 4.5 M NaCl, the mechanisms underlying stress response have largely remained mystery. groundbreaking discovery, this study identifies choline dehydrogenase enzyme, termed DtCHDH, capable of converting betaine aldehyde. Remarkably, is first identification such an enzyme not just in D. tertiolecta but across entire Chlorophyta. A 3D model DtCHDH was constructed, and molecular docking with performed, revealing potential binding site substrate. The heterologously expressed E. coli Rosetta (DE3) subsequently purified, achieving activity 672.2 U/mg. To elucidate role salt RNAi employed knock down gene expression. results indicated that Ri-12 strain exhibited compromised growth under both low conditions, along consistent expression content. Additionally, fatty acid analysis might also be FAPs catalyzing reactions decarboxylase activity. This only illuminates metabolism tertiolecta's adaptation novel target enhancing NaCl microalgae biotechnological applications.

Language: Английский

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Rhizobial plant probiotics enhance yield, heavy metal resistance, and impact the rhizosphere bacterial community in tomato (Solanum lycopersicum) under conventional agriculture system

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Background and Aims This study investigates the potential of native elite rhizobial strains Rhizobium sp. ACO-34A, Sinorhizobium mexicanum ITTG-R7^T, S. chiapasense ITTG-S70^T to enhance tomato crop productivity under conventional open-field agricultural management. It evaluates their effects on yield, plant growth, nutrient uptake, rhizosphere bacterial community dynamics. Methods Tomato plants were inoculated with cultivation practices compared a control group treated chemical fertilizers. Agronomic biological parameters, content in tissue, diversity (alpha beta) assessed. Soil properties analyzed determine influence microbial performance. Results Inoculation Rhizobium ACO-34A resulted significant 2.6-fold increase yield chemically fertilized controls. Enhanced fruit size, height, stem width, dry weight also observed. Additionally, showed statistically reduction Fe Cu tissue. However, no substantial changes detected alpha or beta diversity, nor association between soil Conclusions The findings suggest that observed improvements are primarily due inoculation strains, particularly rather than characteristics. underscores as sustainable biotechnological tools boost support global agriculture.

Language: Английский

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Improvement in Nitrogen-Use Efficiency Increases Salt Stress Tolerance in Rice Seedlings and Grain Yield in Salinized Soil

Plants, Journal Year: 2025, Volume and Issue: 14(4), P. 556 - 556

Published: Feb. 11, 2025

Salt stress has become a major limiting factor of rice (Oryza sativa L.) yield worldwide. Appropriate nitrogen application contributes to improvement in the salt tolerance rice. Here, we show that nitrogen-use efficiency increases Rice varieties with different efficiencies were subjected stress; they stimulated 50, 100, and 150 mmol/L NaCl solution at seedling stage salinities 0.2, 0.4%, 0.6% reproductive growth stage. Compared nitrogen-inefficient varieties, nitrogen-efficient showed significant expression levels nitrogen-use-efficiency-related genes (TOND1 OsNPF6.1), content (5.1-12.1%), enzyme activities (11.7-36.4%) when under conditions. The better adaptation stress, as shown by decrease leaf-withering rate (4.7-10.3%), higher chlorophyll (3.8-9.7%) water contents (1.1-9.2%), root status (7.3-9.1%) found seedlings Analysis physiological indexes revealed accumulated osmotic adjustment substances (9.7-79.9%), lower ROS (23.1-190.8%) Na+ (15.9-97.5%) contents, stress-related Furthermore, salt-induced 1000-grain weight (2.1-6.2%), harvest index (1.4-4.9%), grain (2.8-4.1%) salinized soil. Conversely, metabolism statuses severe Our results suggest could improve transport efficiency; accordingly, their use can gene network, alleviating damage improving

Language: Английский

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Soil Amendments and Slow-Release Urea Improved Growth, Physiological Characteristics, and Yield of Salt-Tolerant Rice Under Salt Stress Conditions

Plants, Journal Year: 2025, Volume and Issue: 14(4), P. 543 - 543

Published: Feb. 10, 2025

The present study aimed to investigate the effects of different soil amendments coupled with nitrogen fertilizer on morpho-physiological characteristics and yield salt-tolerant rice under saline conditions. amendments, i.e., S1: zeolite amendment, S2: coconut coir S3: humic acid S0: no treatments, N1: urea, N2: slow-release N0: N fertilizer, were kept in main plots sub-plots, respectively, a split-plot design. variety 'Shuangliangyou 138' was exposed 0.3% salt irrigation water. results showed that during entire growth period, compared S0, S1 S3 treatments increased SPAD values by an average 6.3%and 5.5%, leaf area index 24.5% 19.8%, canopy interception rate 11.5% 4.1%, aboveground biomass 36.8% 13.9%, respectively. Moreover, conditions, tiller number per square meter, water potential, content, chlorophyll contents also improved urea than urea. promoted root vitality nutrient absorption as well enhanced activity antioxidant metabolism enzymes In sum, rational application could improve productivity saline-alkali land.

Language: Английский

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Rice cultivation can mitigate soil salinization and alkalization by modifying the macropore structure in saline–sodic paddy fields

Agricultural Water Management, Journal Year: 2025, Volume and Issue: 313, P. 109473 - 109473

Published: April 9, 2025

Language: Английский

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Higher endogenous abscisic acid confers greater tolerance to saline-alkaline stress in Petunia hybrida

Environmental and Experimental Botany, Journal Year: 2024, Volume and Issue: 228, P. 106035 - 106035

Published: Nov. 10, 2024

Language: Английский

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The response of root-zone soil bacterial community, metabolites, and soil properties of Sanyeqing medicinal plant varieties to anthracnose disease in reclaimed land, China

Heliyon, Journal Year: 2024, Volume and Issue: 10(16), P. e36602 - e36602

Published: Aug. 1, 2024

To enhance the utilization of reclaimed land, Sanyeqing (SYQ) has been extensively cultivated in Zhejiang province, China. However, prevalence anthracnose significantly hindered SYQ growth, emerging as a primary obstacle to its production. This study aimed elucidate SYQ's responses land environments by comprehensively analyzing root-zone bacterial community structure, metabolites, and soil properties.

Language: Английский

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Comparative Study of the Priming Effect of Abscisic Acid on Tolerance to Saline and Alkaline Stresses in Rice Seedlings

Agronomy, Journal Year: 2023, Volume and Issue: 13(11), P. 2698 - 2698

Published: Oct. 26, 2023

The plant hormone abscisic acid (ABA) regulates the response to environmental stress; therefore, ABA priming is an effective strategy for enhancing stress tolerance in rice. In this study, we investigated effects of 1 and 5 µM on biochemical physiological traits associated with seedling growth performance two rice cultivars exposed saline (100 mM NaCl) alkaline (15 Na2CO3) via root drenching. pretreatment effectively reduced damage seedlings by mitigating increases Na+/K+ ratio, membrane injury, contents Na+, malondialdehyde, hydrogen peroxide, superoxide anion radical, prevented reductions K+ total chlorophyll contents, ROS-related enzyme activities both under stresses. Rice had a stronger ability maintain ion homeostasis, eliminate ROS, induce changes endogenous levels upregulation OsHKT1;5, OsSOS1, OsNHX5, OsPOX1, OsCATA, OsNCED3, OsSalT, OsWsi18 downregulation OsRbohA than stress. saline–alkaline (SA)-sensitive cultivar demonstrated greater sensitivity effect that SA-tolerant conditions. These findings have implications adaptation SA soils.

Language: Английский

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The Glycine soja cytochrome P450 gene GsCYP82C4 confers alkaline tolerance by promoting reactive oxygen species scavenging

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(2)

Published: March 1, 2024

Abstract Recent studies have demonstrated the crucial role of Cytochrome P450 enzymes (CYPs) in production secondary metabolites, phytohormones and antioxidants plants. However, their functional characterization specifically under alkaline stress remains elusive. CYP82C4 was key gene screened from a family wild soybean CYPs our previous studies. The aim this present study to clone Glycine soja GsCYP82C4 characterize its functions Arabidopsis max. results showed that displayed high expression different plant tissues at mature stages compared young stages. Further, higher temporal noted 6, 12 24 h time points after alkali treatment leaves roots. In addition, overexpression improved tolerance via increased root lengths fresh biomass strengthened antioxidant defense system reduction superoxide radicals transgenic lines type (WT) atcyp82c4 mutants. levels stress‐related marker genes were up‐regulated OX stress. analysis better hairy growth, weight, enzyme activities reduced lipid peroxidation rates WT (K599) line. total, positive roles both max alleviate altering abundance responsive genes, stronger roots, as well radicals.

Language: Английский

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