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  • Open Access

    ARTICLE

    Genome-Wide Identification of the GST Gene Family in Loquat (Eriobotrya japonica Lindl.) and Their Expression under Cold Stress with ALA Pretreatment

    Guanpeng Huang1,#, Ti Wu1,2,#, Yinjie Zheng3, Qiyun Gu2, Qiaobin Chen2, Shoukai Lin2,*, Jincheng Wu2,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 2715-2735, 2024, DOI:10.32604/phyton.2024.056484 - 30 November 2024

    Abstract Loquat (Eriobotrya japonica Lindl.), a rare fruit native to China, has a long history of cultivation in China. Low temperature is the key factor restricting loquat growth and severely affects yield. Low temperature induces the regeneration and metabolism of reduced glutathione (GSH) to alleviate stress damage via the participation of glutathione S-transferases (GSTs) in plants. In this study, 16 GSTs were identified from the loquat genome according to their protein sequence similarity with Arabidopsis GSTs. On the basis of domain characteristics and phylogenetic analysis of AtGSTs, these EjGSTs can be divided into 4 subclasses: Phi, Theta, Tau… More >

  • Open Access

    REVIEW

    Molecular Mechanism Underlying Plant Response to Cold Stress

    Yiwei Cao, Delight Hwarari, Yasmina Radani, Yuanlin Guan, Liming Yang*

    Phyton-International Journal of Experimental Botany, Vol.92, No.9, pp. 2665-2683, 2023, DOI:10.32604/phyton.2023.024929 - 28 July 2023

    Abstract Low temperature stress is one of the most important factors limiting plant growth and geographical distribution. In order to adapt to low temperature, plants have evolved strategies to acquire cold tolerance, known as, cold acclimation. Current molecular and genomic studies have reported that annual herbaceous and perennial woody plants share similar cold acclimation mechanisms. However, woody perennials also require extra resilience to survive cold winters. Thus, trees have acquired complex dynamic processes to control the development of dormancy and cold resistance, ensuring successful tolerance during the coldest winter season. In this review, we systemically described More >

  • Open Access

    ARTICLE

    An in Vitro Approach to Investigate the Role of Abscisic Acid in Alleviating the Negative Effects of Chilling Stress on Banana Shoots

    Ibrahim Hmmam1,*, Ali Raza2, Ivica Djalovic3, Nagwa Khedr1, Abdou Abdellatif1

    Phyton-International Journal of Experimental Botany, Vol.92, No.6, pp. 1695-1711, 2023, DOI:10.32604/phyton.2023.028317 - 09 March 2023

    Abstract Banana is a tropical crop cultivated in warm places. Chilling stress in Egypt is making banana crops less productive. Abscisic acid (ABA), a key plant hormone, regulates metabolic and physiological processes and protects plants from a variety of stresses. In vitro growing banana shoots were pre-treated with ABA at four concentrations (0, 25, 50, and 100 mM) and chilled at 5°C for 24 h, followed by a six-day recovery period at 25°C. By comparing ABA treatments to both positive and negative controls, physiological and biochemical changes were investigated. Chilling stress (5°C) caused a considerable increase… 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 >

  • Open Access

    ARTICLE

    Genome-Wide Analysis of Snapdragon WRKY and VQ Gene Families and Their Expression in Response to Drought and Cold Stresses

    Huaqiao Ding*, Lihui Mao, Qingcheng Zou, Wei Hu, Xuerui Cao, Qing Dong*

    Phyton-International Journal of Experimental Botany, Vol.91, No.4, pp. 773-789, 2022, DOI:10.32604/phyton.2022.018075 - 09 December 2021

    Abstract Snapdragon (Antirrhinum majus) is one of the most widely cultivated grass flowers in the world. WRKY transcription factors, VQ proteins and their interactions play crucial roles in plant response to abiotic stresses. However, little is known about WRKY and VQ gene families in snapdragon. In the present study, WRKY and VQ genes and their interactions were comprehensively analyzed in snapdragon using bioinformatics approaches, and their expression in response to drought and cold stresses was examined using real-time PCR. A total of 67 AmWRKY genes were identified in snapdragon, which were classified into different groups or subgroups based on phylogenetic… More >

  • Open Access

    ARTICLE

    Potentiality of Different Seed Priming Agents to Mitigate Cold Stress of Winter Rice Seedling

    Md. Parvez Anwar1,*, Md. Ariful Islam Khalid1, A. K. M. Mominul Islam1, Sabina Yeasmin1, Sharif Ahmed2, Adel Hadifa3, Ismail A. Ismail4, Akbar Hossain5, Ayman EL Sabagh6,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.5, pp. 1491-1506, 2021, DOI:10.32604/phyton.2021.015822 - 27 May 2021

    Abstract Seed priming has proved to be an effective pre-germination seed invigoration technique for different crops to improve seed and seedling performance under different abiotic stresses. In Bangladesh, winter rice is very often exposed to cold waves just after sowing in the nursery bed resulting in poor seed germination and seedling emergence, yellowish and thin seedlings production, and a very low survival rate. Seed priming may mitigate the cold stress during seed germination and seedling emergence and helps in the quality seedling production of winter rice. To evaluate the efficacy of different seed priming techniques in… More >

  • Open Access

    ARTICLE

    Overexpression of IbSINA5 Increases Cold Tolerance through a CBF SINA-COR Mediated Module in Sweet Potato

    Shiyang Li1,#, Xue-Ao Liu2,#, Lizi Zhao2, Huiqing Huang3, Bei Li2, Zhizhong Song2, Meixia Liang2, Hongxia Zhang2,3, Limin Wang2,*, Shenglin Zhou1,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 761-772, 2021, DOI:10.32604/phyton.2021.016314 - 30 March 2021

    Abstract Seven in absentia (SINA) family proteins play a central role in plant growth, development and resistance to abiotic stress. However, their biological function in plant response to cold stress is still largely unknown. In this work, a seven in absentia gene IbSINA5 was isolated from sweet potato. Quantitative real-time polymerase chain reaction (qRT-PCR) analyses demonstrated that IbSINA5 was ubiquitously expressed in various tissues and organs of sweet potato, with a predominant expression in fibrous roots, and was remarkably induced by cold, drought and salt stresses. Subcellular localization assays revealed that IbSINA5-GFP fusion protein was mainly localized in cytoplasm… More >

  • Open Access

    ARTICLE

    Physiological Responses of Dendrobium officinale under Exposure to Cold Stress with Two Cultivars

    Shuaishuai Zhang1, Jin Li1, Yongchang Shen1, Linda Nartey Korkor1, Qian Pu1, Jin Lu1, Balock Shakeela1, Dedong Kong2, Ou Li1, Guohong Zeng1,*, Xiufang Hu1,*

    Phyton-International Journal of Experimental Botany, Vol.89, No.3, pp. 599-617, 2020, DOI:10.32604/phyton.2020.010074 - 22 June 2020

    Abstract This study aimed to explore the cold tolerance of two cultivars of Dendrobium officinale (MG1, MG2) grown in different regions of China. Under -2°C incubation, cultivar MG1 remained active after 3 d, and continued to grow after returning to room temperature. However, MG2 could only maintain its activity after 2 d treatment at −2°C, and the seedlings died with the low temperature treatment time. Investigation of the characteristics of the plants grown in the south (Hangzhou) or north (Zhengzhou) of China indicated that the leaves of MG1 also had reduced stomatal density, the highest thickness, and… More >

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