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  • Open Access

    ARTICLE

    Seed Priming Improves Chilling Stress Tolerance in Rice (Oryza sativa L.) Seedlings

    Md. Tahjib-Ul-Arif1,2,*, Md Asaduzzaman3, Bir Jahangir Shirazy2,4, Md. Shihab Uddine Khan5, A. M. Sajedur Rahman2,6, Yoshiyuki Murata2, Sozan Abdel Hamed7, Arafat Abdel Hamed Abdel Latef8,9,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 3013-3027, 2024, DOI:10.32604/phyton.2024.058710 - 30 November 2024

    Abstract Chilling is one of the major abiotic stresses for plants, especially for rice cultivation. Many essential metabolic processes for growth and development are temperature-dependent. In that case, reducing the negative effects of cold stress using exogenous chemicals is a possible option. Therefore, the current study examined the effects of pre-sowing seed treatment with different chemicals, viz. hydrogen peroxide (H2O2), salicylic acid (SA), calcium chloride (CaCl2), thiourea (TU), and citric acid (CA) on the germination of rice seeds (cv. BRRI dhan28) under chilling environments. Rice seeds were soaked in distilled water (control), 10 mM CA, 2 mM SA,… More >

  • Open Access

    ARTICLE

    Seed Priming with Potassium Nitrate Can Enhance Salt Stress Tolerance in Maize

    Bushra Rehman1, Asma Zulfiqar1, Houneida Attia2, Rehana Sardar3, Muneera A. Saleh2, Khalid H. Alamer4, Ibtisam M. Alsudays5, Faisal Mehmood6, Qamar uz Zaman7,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.8, pp. 1819-1838, 2024, DOI:10.32604/phyton.2024.048780 - 30 August 2024

    Abstract Salinity is a major abiotic stress that hinders plant development and productivity and influences agricultural yield. Seed priming is a technique used to boost germination and seedling growth under abiotic stress. A pot experiment was conducted to evaluate the impact of seed priming with potassium nitrate (KNO3) at various levels (0%, 0.50%, 1.00% and 1.50%) under salt stress (0, 75, 100 mM NaCl) on two maize verities (MNH360 and 30T60) for the growth, development and metabolic attributes results revealed that in maize variety MNH360, KNO3 priming’s significantly enhanced growth parameters than in maize variety 30T60 under… More >

  • Open Access

    ARTICLE

    Physiological Mechanism of Exogenous Selenium in Alleviating Mercury Stress on Pakchoi (Brassica campestris L.)

    Chengxu Qian1, Qiangwen Chen1,2, Leiyu Jiang1, Xiaoyan Yang3, Shen Rao4, Weiwei Zhang1, Feng Xu1,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.5, pp. 951-962, 2024, DOI:10.32604/phyton.2024.050893 - 28 May 2024

    Abstract The objective of this study was to explain the physiological mechanisms through which NaSeO mitigates the growth and developmental inhibition of pakchoi under HgCl stress. The results showed that treatment with HgCl (40 mg L) led to reduced biomass, dwarfing, root shortening, and root tip necrosis in pakchoi. Compared to control (CK), the activities of superoxide dismutase (SOD) and peroxidase (POD) in Hg treatment increased, and the content of malondialdehyde (MDA) also dramatically increased, which negatively impacted the growth of pakchoi. Low concentrations of NaSeO (0.2 mg L) significantly increased the content of soluble sugars… More >

  • Open Access

    ARTICLE

    Effects of Potassium-Solubilizing Bacteria on Growth, Antioxidant Activity and Expression of Related Genes in Fritillaria taipaiensis P. Y. Li

    Jiaqi Lang1, Mingyan Ye1, Ya Luo1, Yueheng Wang1, Zhifen Shi1,2, Xiaotian Kong1,3, Xuan Li1, Nong Zhou1,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.4, pp. 789-806, 2024, DOI:10.32604/phyton.2024.049088 - 29 April 2024

    Abstract This study aimed to examine the effects of inoculating Fritillaria taipaiensis P.Y.Li leaves with different strains of potassium-solubilizing bacteria (KSB), or combinations thereof, focusing on aspects of photosynthesis and physiological and biochemical characteristics. At present, some studies have only studied the rhizosphere microbial community characteristics of F. taipaiensis and have not discussed the effects of different microbial species on the growth promotion of F. taipaiensis. This paper will start from the perspective of potassium-solubilizing bacteria to conduct an in-depth study. Seed cultivation commenced at the base with three different KSBs in early October 2022. The growth of F. taipaiensisMore >

  • Open Access

    ARTICLE

    Osmotic Regulation, Antioxidant Enzyme Activities and Photosynthetic Characteristics of Tree Peony ( Andr.) in Response to High-Temperature Stress

    Zhipeng Sheng, Jiasong Meng, Jun Tao*, Daqiu Zhao*

    Phyton-International Journal of Experimental Botany, Vol.92, No.11, pp. 3133-3147, 2023, DOI:10.32604/phyton.2023.028818 - 24 October 2023

    Abstract

    Tree peony (Paeonia suffruticosa Andr.) is a traditional Chinese flower, which prefers cool weather. However, high temperature in summer in the middle and lower reaches of the Yangtze River restricts its growth and development. In this study, osmotic regulation, antioxidant enzyme activities, and photosynthetic characteristics of tree peony in response to high-temperature stress were investigated. The results showed that high-temperature stress had destroyed the cell membrane, manifested as the increased relative electrical conductivity and malondialdehyde content. Moreover, high-temperature stress led to excessive accumulation of reactive oxygen species, thereby, activating antioxidant enzyme activities. Also, photosynthetic parameters and chlorophyll

    More >

  • Open Access

    ARTICLE

    Lipid Production, Oxidative Status, Antioxidant Enzymes and Photosynthetic Efficiency of Coccomyxa chodatii SAG 216-2 in Response to Calcium Oxide Nanoparticles

    Huwida A. A. Abdel-Kader1, Naeima Yousef1, Mohammad Anwar Hossain2,*, Mona F. A. Dawood1,*

    Phyton-International Journal of Experimental Botany, Vol.92, No.7, pp. 1955-1974, 2023, DOI:10.32604/phyton.2023.028583 - 29 May 2023

    Abstract The extensive use of nanoparticles (NPs) in diverse applications causes their localization to aquatic habitats, affecting the metabolic products of primary producers in aquatic ecosystems, such as algae. Synthesized calcium oxide nanoparticles (CaO NPs) are of the scarcely studied NPs. Thus, the current work proposed that the exposure to CaO NPs may instigate metabolic pathway to be higher than that of normally growing algae, and positively stimulate algal biomass. In this respect, this research was undertaken to study the exposure effect of CaO NPs (0, 20, 40, 60, 80, and 100 µg mL−1 ) on the… More >

  • Open Access

    ARTICLE

    Response of Contrasting Rice Genotypes to Zinc Sources under Saline Conditions

    Muhammad Jan1,*, Muhammad Anwar-Ul-Haq2, Talha Javed3, Sadam Hussain4,*, Ilyas Ahmad5, Muhammad Ashraf Sumrah6, Javed Iqbal7, Babar Hussain Babar8, Aqsa Hafeez9, Muhammad Aslam5, Muhammad Tahir Akbar10, Marjan Aziz6, Khadiga Alharbi11, Izhar Ullah12

    Phyton-International Journal of Experimental Botany, Vol.92, No.5, pp. 1361-1375, 2023, DOI:10.32604/phyton.2023.026620 - 09 March 2023

    Abstract Abiotic stresses are among the major limiting factors for plant growth and crop productivity. Among these, salinity is one of the major risk factors for plant growth and development in arid to semi-arid regions. Cultivation of salt tolerant crop genotypes is one of the imperative approaches to meet the food demand for increasing population. The current experiment was carried out to access the performance of different rice genotypes under salinity stress and Zinc (Zn) sources. Four rice genotypes were grown in a pot experiment and were exposed to salinity stress (7 dS m−1), and Zn (15… More >

  • Open Access

    ARTICLE

    Biochemical and Physiological Responses of Arabidopsis thaliana Leaves to Moderate Mechanical Stimulation

    Iva Šutevski1,#, Klara Krmpotić1,#, Sandra Vitko1, Nataša Bauer1, Eva Fancev2, Mario Cifrek2, Željka Vidaković-Cifrek1,*

    Phyton-International Journal of Experimental Botany, Vol.92, No.3, pp. 901-920, 2023, DOI:10.32604/phyton.2023.025165 - 29 November 2022

    Abstract Mechanical stimulation of plants can be caused by various abiotic and biotic environmental factors. Apart from the negative consequences, it can also cause positive changes, such as acclimatization of plants to stress conditions. Therefore, it is necessary to study the physiological and biochemical mechanisms underlying the response of plants to mechanical stimulation. Our aim was to evaluate the response of model plant Arabidopsis thaliana to a moderate force of 5 N (newton) for 20 s, which could be compared with the pressure caused by animal movement and weather conditions such as heavy rain. Mechanically stimulated leaves… More >

  • Open Access

    ARTICLE

    Growth, ROS Markers, Antioxidant Enzymes, Osmotic Regulators and Metabolic Changes in Tartary Buckwheat Subjected to Short Drought

    Yan Wan1,#, Yuan Liang1,#, Xuxiao Gong1,#, Jianyong Ouyang1, Jingwei Huang2, Xiaoyong Wu1, Qi Wu1, Changying Liu1, Xueling Ye1, Xiaoning Cao3, Gang Zhao1, Liang Zou1,*, Dabing Xiang1,*

    Phyton-International Journal of Experimental Botany, Vol.92, No.1, pp. 35-54, 2023, DOI:10.32604/phyton.2022.021698 - 06 September 2022

    Abstract Tartary buckwheat (Fagopyrum tataricum) is an important pseudocereal feed crop with medicinal and nutritional value. Drought is one of the main causes of reduced growth and yield in these plants. We investigated the growth, physiological, and metabolic responses of the widely promoted Tartary buckwheat variety Chuan Qiao No. 1 to polyethylene glycol (PEG)-mediated drought stress. Drought significantly decreased shoot length, shoot biomass and relative water content. Root length, malondialdehyde content, electrolyte leakage, activities of superoxide dismutase, peroxidase, catalase and amylase, and contents of soluble sugar, soluble protein and proline were increased by PEG-mediated drought. Untargeted metabolomics… More >

  • Open Access

    ARTICLE

    Mycorrhiza improves cold tolerance of Satsuma orange by inducing antioxidant enzyme gene expression

    MING-AO CAO1, FEI ZHANG2, ELSAYED FATHI ABD_ALLAH3, QIANGSHENG WU1,*

    BIOCELL, Vol.46, No.8, pp. 1959-1966, 2022, DOI:10.32604/biocell.2022.020391 - 22 April 2022

    Abstract A potted experiment was carried out to study the effect of an arbuscular mycorrhizal fungus (Diversispora versiformis) and arbuscular mycorrhizal like fungus (Piriformospora indica) on antioxidant enzyme defense system of Satsuma orange (Citrus sinensis cv. Oita 4) grafted on Poncirus trifoliata under favourable temperature (25°C) and cold temperature (0°C) for 12 h. Such short-term treatment of cold temperature did not cause any significant change in root fungal colonization and spore density in soil. Under cold stress, D. versiformis inoculation did not change the activity of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) in leaves and roots, whereas P.… More >

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