Effects of lead stress on the growth, physiology, and cellular structure of privet seedlings

PloS One
Jian ZhouZeping Jiang

Abstract

In this study, we investigated the effects of different lead (Pb) concentrations (0, 200, 600, 1000, 1400 mg kg-1 soil) on the growth, ion enrichment in the tissues, photosynthetic and physiological characteristics, and cellular structures of privet seedlings. We observed that with the increase in the concentrations of Pb, the growth of privet seedlings was restricted, and the level of Pb ion increased in the roots, stem, and leaves of the seedlings; however, most of the ions were concentrated in the roots. Moreover, a decreasing trend was observed for chlorophyll a, chlorophyll b, total chlorophyll, net photosynthesis (Pn), transpiration rate (Tr), stomatal conductance (Gs), sub-stomatal CO2 concentration (Ci), maximal photochemical efficiency (Fv/Fm), photochemical quenching (qP), and quantum efficiency of photosystem II (ΦPSII). In contrast, the carotene levels, minimum fluorescence (F0), and non-photochemical quenching (qN) showed an increasing trend. Under Pb stress, the chloroplasts were swollen and deformed, and the thylakoid lamellae were gradually expanded, resulting in separation from the cell wall and eventual shrinkage of the nucleus. Using multiple linear regression analysis, we found that the content of Pb in the ...Continue Reading

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Citations

Feb 29, 2020·International Journal of Phytoremediation·Agripina RamírezRosa M Ros
Jul 11, 2020·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Khalid Hasan Alamer, Khalaf Ali Fayez
Dec 11, 2019·International Journal of Molecular Sciences·Ying ZhuXuan Huang
Mar 2, 2019·Environmental Science and Pollution Research International·Mustafa Okant, Cengiz Kaya
Oct 28, 2019·Environmental Science and Pollution Research International·Gordana AndrejićTamara Rakić
Jan 6, 2019·Environmental Science and Pollution Research International·Ghulam Mustafa ShahRenjie Dong
Aug 28, 2020·International Journal of Phytoremediation·Manuel A González-VillalobosFrancisca O Plascencia-Escalante
Oct 28, 2019·Environmental Science and Pollution Research International·Muhammad Tariq JavedHassan Javed Chaudhary
Oct 11, 2020·Environmental Monitoring and Assessment·Zohre Ebrahimi-KhusfiMohammad Khosroshahi
Dec 30, 2020·International Journal of Phytoremediation·Muhammad ShabaanMukkaram Ejaz
Jan 7, 2021·Environmental Science and Pollution Research International·Andrés BlancoJudith H Rodriguez
Dec 11, 2020·Plant Physiology and Biochemistry : PPB·Anis Ali ShahMuhammad Akbar
Jun 14, 2021·Environmental Monitoring and Assessment·Israel Godwin NwovuObinna A Oje

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