Lignin-based hydrogel alleviates drought stress in maize

Mazloom, Najmeh; Khorassani, Reza; Zohury, Gholam Hossein; Emami, Hojat; Whalen, Joann K.

doi:10.1016/j.envexpbot.2020.104055

Cited by 65 publications

(28 citation statements)

References 41 publications

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“…In wheat plants, lignin deposition was observed to be enhanced by SYRINGALDAZINE PEROXIDASE via speeding up the polyamine degradation process upon drought (Bala et al, 2016). In a study on maize plants, the lignin-based hydrogel was found to be promising to mitigate drought-related adversities by elevating water content, proline, phosphorus, and biomass and by reducing electrolyte leakage (Mazloom et al, 2020).…”

Section: Lignin In Drought Stressmentioning

confidence: 99%

Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

Jogawat

Yadav

Chhaya

et al. 2021

Physiologia Plantarum

233

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Drought stress negatively affects crop performance and weakens global food security. It triggers the activation of downstream pathways, mainly through phytohormones homeostasis and their signaling networks, which further initiate the biosynthesis of secondary metabolites (SMs). Roots sense drought stress, the signal travels to the above-ground tissues to induce systemic phytohormones signaling. The systemic signals further trigger the biosynthesis of SMs and stomatal closure to prevent water loss. SMs primarily scavenge reactive oxygen species (ROS) to protect plants from lipid peroxidation and also perform additional defense-related functions.Moreover, drought-induced volatile SMs can alert the plant tissues to perform drought stress mitigating functions in plants. Other phytohormone-induced stress responses include cell wall and cuticle thickening, root and leaf morphology alteration, and anatomical changes of roots, stems, and leaves, which in turn minimize the oxidative stress, water loss, and other adverse effects of drought. Exogenous applications of phytohormones and genetic engineering of phytohormones signaling and biosynthesis pathways mitigate the drought stress effects. Direct modulation of the SMs biosynthetic pathway genes or indirect via phytohormones' regulation provides drought tolerance. Thus, phytohormones and SMs play key roles in plant development under the drought stress environment in crop plants. | INTRODUCTIONA large segment of the population is going to face food scarcity due to climate change and the gradually decreasing arable land area. Plants are confronted to a variable environment while growing from seedling to mature plant. Different abiotic and biotic stresses affect plant growth and development (Cramer et al., 2011;Fujita et al., 2006;Tuteja & Sopory, 2008). Abiotic stress includes drought, submergence, osmotic stress, salinity stress, oxidative stress, ultra-violet irradiation, wounding, and nutrient depletion. The extremity of optimum factors such as high temperature or low temperature and freezing-thawing is also included in abiotic stresses. Biotic stresses include viruses, bacteria, fungi, algae, worms, nematodes, insects, herbivores, and parasitic plants. Plants have to combat these stressors due to their sessile lifestyle (Cramer et al., 2011;Fujita et al., 2006). More than 50% reduction in average yields of major cereal crops has been reported because of various abiotic stresses. Drought is one of the most important abiotic stresses that negatively influence plant performance and causes harsh effects on biomass and yield (Fahad et al., 2017). A

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Section: Lignin In Drought Stressmentioning

confidence: 99%

Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

Jogawat

Yadav

Chhaya

et al. 2021

Physiologia Plantarum

233

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“…In the results reported by Mazloom et al [75], it was shown that maize crop plants were taller, had a higher amount of phosphorus, and a higher biomass when they were grown in soils with lignin hydrogels, compared to synthetic hydrogels and no hydrogels. Additionally, it was suggested that the addition of alkaline lignin to the soil of some crops could promote the activity of the roots due to the stimulation of specific phytohormones in plants, improving growth and elongation of plant stems [75,76].…”

Section: Lignin-based Hydrogelsmentioning

confidence: 95%

“…Adding lignin to the hydrogel protects the insecticide from photodegradation, helping to maintain it active for a higher time [74]. In the field of water resources, the work developed by Mazloom et al [75] describe a solution method to reduce the impact of water scarcity on agricultural soils, using a superabsorbent and biodegradable hydrogel based on alkali lignin to retain moisture from irrigation or rain, releasing water depending on the water demand of the soil and crops. In the results reported by Mazloom et al [75], it was shown that maize crop plants were taller, had a higher amount of phosphorus, and a higher biomass when they were grown in soils with lignin hydrogels, compared to synthetic hydrogels and no hydrogels.…”

Section: Lignin-based Hydrogelsmentioning

confidence: 99%

“…In the field of water resources, the work developed by Mazloom et al [75] describe a solution method to reduce the impact of water scarcity on agricultural soils, using a superabsorbent and biodegradable hydrogel based on alkali lignin to retain moisture from irrigation or rain, releasing water depending on the water demand of the soil and crops. In the results reported by Mazloom et al [75], it was shown that maize crop plants were taller, had a higher amount of phosphorus, and a higher biomass when they were grown in soils with lignin hydrogels, compared to synthetic hydrogels and no hydrogels. Additionally, it was suggested that the addition of alkaline lignin to the soil of some crops could promote the activity of the roots due to the stimulation of specific phytohormones in plants, improving growth and elongation of plant stems [75,76].…”

Section: Lignin-based Hydrogelsmentioning

confidence: 99%

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A Review on the Lignin Biopolymer and Its Integration in the Elaboration of Sustainable Materials

Vásquez-Garay¹,

Carrillo-Varela

Vidal

et al. 2021

Sustainability

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Lignin is one of the wood and plant cell wall components that is available in large quantities in nature. Its polyphenolic chemical structure has been of interest for valorization and industrial application studies. Lignin can be obtained from wood by various delignification chemical processes, which give it a structure and specific properties that will depend on the plant species. Due to the versatility and chemical diversity of lignin, the chemical industry has focused on its use as a viable alternative of renewable raw material for the synthesis of new and sustainable biomaterials. However, its structure is complex and difficult to characterize, presenting some obstacles to be integrated into mixtures for the development of polymers, fibers, and other materials. The objective of this review is to present a background of the structure, biosynthesis, and the main mechanisms of lignin recovery from chemical processes (sulfite and kraft) and sulfur-free processes (organosolv) and describe the different forms of integration of this biopolymer in the synthesis of sustainable materials. Among these applications are phenolic adhesive resins, formaldehyde-free resins, epoxy resins, polyurethane foams, carbon fibers, hydrogels, and 3D printed composites.

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“…Lignin is the main structural component of thickened secondary cell walls in almost all vascular plants [53], and it is very important for drought tolerance [54]. Ferulate-5-hydroxylase is responsible for the nal hydroxylation of syringyl-type lignin precursors.…”

Section: Genes Involved In Photosynthesis and Carbon Metabolismmentioning

confidence: 99%

Comparative analysis of alfalfa (Medicago sativa L.) seedling transcriptomes reveals genotype-specific drought tolerance mechanisms

Wang

et al. 2021

Plant Physiology and Biochemistry

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BackgroundDrought is one of the main abiotic factors that affect alfalfa yield. The identi cation of genes that control this complex trait can provide important insights for alfalfa breeding. However, little is known about how alfalfa responds and adapts to drought stress, particularly in cultivars of differing drought tolerance. ResultsIn this study, the drought-tolerant cultivar Dryland 'DT' and the drought-sensitive cultivar WL343HQ 'DS' were used to characterize leaf and root physiological responses and transcriptional changes in response to water de cit. Under drought stress, Dryland roots (DTR) showed more differentially expressed genes than WL343HQ roots (DSR), whereas WL343HQ leaves (DSL) showed more differentially expressed genes than Dryland leaves (DTL). Many of these genes were involved in stress-related pathways, carbohydrate metabolism, and lignin and wax biosynthesis, which may have improved the drought tolerance of alfalfa. We also observed that several genes related to ABA metabolism, root elongation, peroxidase activity, cell membrane stability, ubiquitination, and genetic processing responded to drought stress in alfalfa. We highlighted several candidate genes, including sucrose synthase, xylan 1,4-betaxylosidase, primary-amine oxidase, and alcohol-forming fatty acyl-CoA reductase, for future studies on drought stress resistance in alfalfa and other plant species. ConclusionsIn summary, our results reveal the unique drought adaptation and resistance characteristics of two alfalfa genotypes. These ndings, which may be valuable for drought resistance breeding, warrant further gene functional analysis to augment currently available information and to clarify the drought stress regulatory mechanisms of alfalfa and other plants. HighlightsWe assembled leaf and root transcriptomes of drought-tolerant and drought-sensitive alfalfa cultivars under control and drought conditions.Under drought, the drought-tolerant cultivar exhibited more differentially expressed metabolites than the drought-sensitive cultivar.Genes associated with carbon metabolism, amino acid metabolism, hormones, and secondary metabolites were differentially expressed under drought stress.The drought-tolerant cultivar exhibited higher expression of genes encoding sucrose synthase, xylan 1,4-beta-xylosidase, primary-amine oxidase, and alcohol-forming fatty acyl-CoA.

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Lignin-based hydrogel alleviates drought stress in maize

Cited by 65 publications

References 41 publications

Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

A Review on the Lignin Biopolymer and Its Integration in the Elaboration of Sustainable Materials

Comparative analysis of alfalfa (Medicago sativa L.) seedling transcriptomes reveals genotype-specific drought tolerance mechanisms

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