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Acetic acid:a cheap but chief metabolic regulator for abiotic stress tolerance in plants

Stress Biology 2024年第1期4卷 294-310页

作者： Md.Mezanur Rahman sanjida sultana keya Abira Sahu Aarti Gupta Anuradha Dhingra Lam-Son Phan Tran Mohammad Golam Mostofa Department of Plant and Soil Science Institute of Genomics for Crop Abiotic Stress ToleranceTexas Tech UniversityLubbockTX 79409USA Department of Energy Plant Research Laboratory Michigan State UniversityEast LansingMI 48824USA Department of Biology Washington University in St.LouisSt.LouisUSA Department of Biochemistry and Molecular Biology Michigan State UniversityEast LansingMI 48824USA

As sessile organisms,plants constantly face a variety of abiotic stresses,such as drought,salinity,and metal/metalloid toxicity,all of which possess significant threats to plant growth and yield *** plant resilience to such abiotic stresses bears paramount importance in practicing sustainable agriculture *** acid/acetate has been recognized as an important metabolite with multifaceted roles in regulating plant adaptation to diverse abiotic *** studies have elucidated that acetic acid can potentiate plants’inherent mechanisms to withstand the adverse effects of abiotic stresses through the regulation of lipid metabolism,hormone signaling,epigenetic changes,and physiological defense *** studies also underpin the potential use of acetic acid in boosting crop production under unfavorable environmental *** review provides a comprehensive update on the understanding of how acetic acid regulates plant photosynthesis,acts as an antitranspirant,detoxifies reactive oxygen species to alleviate oxidative stress,interacts with phytohormones to regulate physiological processes,and improves soil fertility and microbial diversity,with a specific focus on drought,salinity,and metal *** also highlight the eco-friendly and economic potential of acetic acid that may attract farmers from developing countries to harness the benefits of acetic acid application for boosting abiotic stress resistance in *** that acetic acid is a widely accessible,inexpensive,and eco-friendly compound,the revelation of acetic acid-mediated regulatory pathways and its crosstalk with other signaling molecules will have significant importance in developing a sustainable strategy for mitigating abiotic stresses in crops.

关键词： Acetic acid Ecofriendly Metabolic regulation Signaling molecules Stress adaptation Plant metabolites

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Biochar potentially enhances maize tolerance to arsenic toxicity by improving physiological and biochemical responses to excessive arsenate

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Biochar 2023年第1期5卷 1222-1242页

作者： Md.Mezanur Rahman Ashim Kumar Das Sharmin sultana Protik Kumar Ghosh Md.Robyul Islam sanjida sultana keya Minhaz Ahmed Sheikh Arafat Islam Nihad MdArifur Rahman Khan Mylea C.Lovell Md.Abiar Rahman S.M.Ahsan Touhidur Rahman Anik Pallavi Fnu Lam-Son Phan Tran Mohammad Golam Mostofa Department of Plant Soil ScienceInstitute of Genomics for Crop Abiotic Stress ToleranceTexas Tech UniversityLubbockTX 79409USA Department of Agroforestry EnvironmentBangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur 1706Bangladesh Institute of Biotechnology and Genetic Engineering(IBGE) Bangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur 1706Bangladesh Department of Agronomy Bangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur 1706Bangladesh Plant Pathology Division Bangladesh Rice Research InstituteGazipur 1701Bangladesh Department of Agriculture Bangabandhu Sheikh Mujibur Rahman ScienceTechnology UniversityGopalganj 8100Bangladesh Department of Energy Plant Research Laboratory Michigan State UniversityEast LansingMI 48824USA Plant Resilience Institute Michigan State UniversityEast LansingMI 48824USA Department of Biochemistry and Molecular Biology Michigan State UniversityEast LansingMI 48824USA

Metalloid pollution,including arsenic poisoning,is a serious environmental issue,plaguing plant productivity and quality of life ***,a carbon-rich material,has been known to alleviate the negative effects of environmental pollutants on ***,the specific role of biochar in mitigating arsenic stress in maize remains relatively ***,we elucidated the functions of biochar in improving maize growth under the elevated level of sodium arsenate(Na_(2)AsO_(4),AsV).Maize plants were grown in pot-soils amended with two doses of biochar(2.5%(B1)and 5.0%(B2)biochar Kg^(−1) of soil)for 5 days,followed by exposure to Na_(2)AsO_(4)(’B1+AsV’and’B2+AsV’)for 9 *** plants exposed to AsV only accumulated substantial amount of arsenic in both roots and leaves,triggering severe phytotoxic effects,including stunted growth,leaf-yellowing,chlorosis,reduced photosynthesis,and nutritional imbalance,when compared with control ***,biochar addition improved the phenotype and growth of AsV-stressed maize plants by reducing root-to-leaf AsV translocation(by 46.56 and 57.46%in‘B1+AsV’and‘B2+AsV’plants),improving gas-exchange attributes,and elevating chlorophylls and mineral levels beyond AsV-stressed *** pretreatment also substantially counteracted AsV-induced oxidative stress by lowering reactive oxygen species accumulation,lipoxygenase activity,malondialdehyde level,and electrolyte *** oxidative stress in‘B1+AsV’and‘B2+AsV’plants likely supported by a strong antioxidant system powered by biochar-mediated increased activities of superoxide dismutase(by 25.12 and 46.55%),catalase(51.78 and 82.82%),and glutathione S-transferase(61.48 and 153.83%),and improved flavonoid levels(41.48 and 75.37%,respectively).Furthermore,increased levels of soluble sugars and free amino acids also correlated with improved leaf relative water content,suggesting a better osmotic acclimatization mechanism in biochar-pretreated AsV-exposed plants.

关键词： Arsenic contamination Antioxidant defense system Biochar Gas-exchange attributes Nutrient dynamics Oxidative stress

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