Role of Biostimulants in the Alleviation of Biotic and Abiotic Stress

Submission Deadline: 31 December 2022 (closed)

Guest Editors

Prof. Heba Ibrahim Mohamed, Ain Shams University, Egypt.
Prof. Eman Fawzi, Ain Shams University, Egypt.


The increased resistance displayed by humans to certain chemicals used in agriculture has boosted the demand for natural products in recent years. Innovative technologies and unique matrices have been used to develop products that can improve the efficiency of plant nutrient utilization in response to this problem. The creation of environmentally benign organic materials known as biostimulants, which stimulate plant growth by improving the efficacy of chemical fertilizers, is one method of raising agricultural output. Plant biostimulants are chemicals and/or microorganisms that, when applied to crops in small doses, can boost plant growth and production, improve product quality, and increase resource efficiency. Humic compounds, protein hydrolysates, seaweed, plant extracts, and helpful microbes are examples of biostimulants. These substances have been proven to affect plant metabolism, increase productivity, and increase plant tolerance to environmental stresses. As a result, scientific studies are needed to determine the processes that biostimulants activate.


Plant Biostimulants; Natural Products; Plant Extract; Algal Extract; Humic Acid; Biotic Stress; Abiotic Stresses; Biochar; Fungal Extact; Bacterial Extract

Published Papers

  • Open Access


    Metabolites Composition of Bacillus subtilis HussainT-AMU Determined by LC-MS and Their Effect on Fusarium Dry Rot of Potato Seed Tuber

    Touseef Hussain, Abrar A. Khan, Heba I. Mohamed
    Phyton-International Journal of Experimental Botany, Vol.92, No.3, pp. 783-799, 2023, DOI:10.32604/phyton.2022.026045
    (This article belongs to this Special Issue: Role of Biostimulants in the Alleviation of Biotic and Abiotic Stress)
    Abstract Fusarium dry rot is considered to be the most critical soilborne and postharvest disease that damages potato tubers worldwide when they are stored for a long time. This study was performed to demonstrate the effect of crude extract, culture filtrate, and cell suspension obtained from the bacterium Bacillus subtilis HussainT-AMU, on the net house and field. From oil-contaminated soil, through the serial dilution method, biosurfactant bacteria were isolated on nutrient agar medium. To isolate and screen the prospective biosurfactant strain, various biosurfactant screening methods were used. Standard protocols were carried out for morphological, molecular, and chemical characterization. The disease incidences… More >

  • Open Access


    Effects of Two Potential Allelochemicals on the Photosystem II of Nitzschia closterium and Monostroma nitidum

    Bowen Huang, Enyi Xie, Yu Ran, Xinyi Chen, Yongjian Huang, Jianjun Cui
    Phyton-International Journal of Experimental Botany, Vol.92, No.1, pp. 251-269, 2023, DOI:10.32604/phyton.2022.022672
    (This article belongs to this Special Issue: Role of Biostimulants in the Alleviation of Biotic and Abiotic Stress)
    Abstract In aquaculture, high-density seaweed farming brings higher economic benefits but also increases outbreaks of diatom felt. The effective control of diatom felt in high-density seaweed farming has always been a research hotspot. This study selected two potential allelochemicals 2-hydroxycinnamic acid and quinic acid to explore their effects on a diatom Nitzschia closterium and an economic seaweed Monostroma nitidum. The results showed that 2-hydroxycinnamic acid had better inhibitory effects than quinic acid on the growth, pigment content and photosynthetic efficiency of N. closterium. Their half-maximal inhibitory concentrations at 120 h (IC50–120 h) were 0.9000 and 1.278 mM, respectively. Additionally, these allelochemicals… More >

  • Open Access


    Biological Control of Root-Knot Nematode Meloidogyne incognita in Psoralea corylifolia Plant by Enhancing the Biocontrol Efficacy of Trichoderma harzianum Using Press Mud

    Yasar Nishat, Mohammad Danish, Heba I. Mohamed, Hisamuddin Shaikh, Abeer Elhakem
    Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1757-1777, 2022, DOI:10.32604/phyton.2022.021267
    (This article belongs to this Special Issue: Role of Biostimulants in the Alleviation of Biotic and Abiotic Stress)
    Abstract Meloidogyne incognita is a plant pathogen causing root-knot disease and loss of crop yield. The present study aimed to use Trichoderma harzianum as a biocontrol agent against plant-parasitic nematodes and used press mud, which is a solid waste by-product of sugarcane, as a biocontrol agent and biofertilizer. Therefore, the combined application of T. harzianum and press mud may enhance nematode control and plant growth. Elemental analysis of press mud using scanning electron microscopy (SEM) integrated with an Energy Dispersive X-ray (EDX) analyzer revealed the presence of different elements such as C, O, Mg, Si, P, K, Ca, Cu and Zn.… More >

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