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  • Open Access


    Physiological Responses of Pea Plants to Salinity and Gibberellic Acid

    Houneida Attia1,2,*

    Phyton-International Journal of Experimental Botany, Vol.92, No.1, pp. 149-164, 2023, DOI:10.32604/phyton.2022.022363

    Abstract Pea is a seed legume. It is rich in cellulose fibre and protein. It is also a significant source of minerals and vitamins. In this paper, we set out to better characterize the physiological responses of Pisum sativum L. to the combined effects of NaCl, 100 mM and gibberellins (GA3). Our analysis revealed that NaCl caused a decrease in growth resulting in a reduction in root elongation, distribution and density, leaf number and leaf area, and a decrease in dry matter of roots and shoots. However, the contribution of GA3 in the salty environment induced an increase in these different… More >

  • Open Access


    Effects of Exogenous Manganese (Mn) on Mineral Elements, Polyamines and Antioxidants in Apple Rootstock Malus robusta Rehd.

    Dazhuang Qi1,2,4,#, Meixia Liang1,2,4,#, Fudong Jiang3, Jianzhao Li1,2,4, Xuqiang Qiao1,2,4,*, Hongxia Zhang1,2,4,*

    Phyton-International Journal of Experimental Botany, Vol.89, No.4, pp. 943-955, 2020, DOI:10.32604/phyton.2020.013801

    Abstract Manganese (Mn) is one of the essential microelements in all organisms. However, high level of Mn is deleterious to plants. In this study, the effects of exogenous manganese application on mineral element, polyamine (PA) and antioxidant accumulation, as well as polyamine metabolic and antioxidant enzyme activities, were investigated in Malus robusta Rehd., a widely grown apple rootstock. High level of Mn treatments decreased endogenous Mg, Na, K and Ca contents, but increased Zn content, in a Mn-concentration-dependent manner. Polyamine metabolic assays revealed that, except the content of perchloric acid insoluble bound (PIS-bound) spermine, which increased significantly, the contents of putrescine… More >

  • Open Access


    The complexity of nitric oxide generation and function in plants

    María P BENAVIDES1, Susana M GALLEGO1, Facundo RAMOS ARTUSO2, Mariana CHECOVICH3, Andrea GALATRO*

    BIOCELL, Vol.40, No.1, pp. 1-6, 2016, DOI:10.32604/biocell.2016.40.001

    Abstract Plants are exposed to environmental stress, in natural and agricultural conditions.Nitric oxide (NO), a small gaseous molecule which plays important roles in plants, has been involved in many physiological processes, and emerged as an important endogenous signaling molecule in the adaptation of plants to biotic and abiotic stress. NO is produced from a variety of enzymatic and non enzymatic sources, which are not yet fully understood. Also, NO and reactive nitrogen species (RNS) can produce posttranslational modifications affecting protein function. Nitrate reductase, a key enzyme in the nitrogen metabolism, is a proposed source of NO in plants which could be… More >

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