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Ivanov YV, Ivanova AI, Kartashov AV, Kuznetsov VV. Recovery of Scots Pine Seedlings from Long-Term Zinc Toxicity. PLANTS (BASEL, SWITZERLAND) 2024; 13:2227. [PMID: 39204663 PMCID: PMC11359686 DOI: 10.3390/plants13162227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 08/06/2024] [Accepted: 08/09/2024] [Indexed: 09/04/2024]
Abstract
We studied the recovery of the growth and physiological parameters of Scots pine seedlings after long-term zinc toxicity. The removal of excess zinc from the nutrient solution resulted in the rapid recovery of primary root growth but did not promote the initiation and growth of lateral roots. The recovery of root growth was accompanied by the rapid uptake of manganese, magnesium, and copper. Despite the maximum rate of manganese uptake by the roots, the manganese content in the needles of the recovering plants did not reach control values during the 28 days of the experiment, unlike magnesium, iron, and copper. In general, the recovery of ion homeostasis eliminated all of the negative effects on the photosynthetic pigment content in the needles. However, these changes, along with recovery of the water content in the needles, were not accompanied by an increase in the weight gain of the recovering seedlings compared with that of the Zn-stressed seedlings. The increased accumulation of phenolic compounds in the needles persisted for a long period after excess zinc was removed from the nutrient solution. The decreased lignin content in the roots and needles is a characteristic feature of Zn-stressed plants. Moreover, the removal of excess zinc from the nutrient solution did not lead to an increase in the lignin content in the organs.
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Affiliation(s)
- Yury V. Ivanov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, 127276 Moscow, Russia; (A.I.I.); (A.V.K.)
| | | | | | - Vladimir V. Kuznetsov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, 127276 Moscow, Russia; (A.I.I.); (A.V.K.)
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Pashkovskiy P, Vereshchagin M, Kartashov A, Ivanov Y, Ivanova A, Zlobin I, Abramova A, Ashikhmina D, Glushko G, Kreslavski VD, Kuznetsov VV. Influence of Additional White, Red and Far-Red Light on Growth, Secondary Metabolites and Expression of Hormone Signaling Genes in Scots Pine under Sunlight. Cells 2024; 13:194. [PMID: 38275819 PMCID: PMC10813845 DOI: 10.3390/cells13020194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/11/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024] Open
Abstract
The influence of short-term additional white (WL), red (RL) and far-red (FRL) light and combined RL+FRL on the physiological morphological and molecular characteristics of two-year-old Scots pine plants grown in a greenhouse under sunlight was studied. Additional RL and RL+FRL increased the number of xylem cells, transpiration and the expression of a group of genes responsible for the biosynthesis and signaling of auxins (AUX/IAA, ARF3/4, and ARF16) and brassinosteroids (BR-α-RED and BRZ2), while the expression of genes related to the signaling pathway related to jasmonic acid was reduced. Additionally, WL, RL and RL+FRL increased the content of proanthocyanidins and catechins in young needles; however, an increase in the expression of the chalcone synthase gene (CHS) was found under RL, especially under RL+FRL, which possibly indicates a greater influence of light intensity than observed in the spectrum. Additional WL increased photosynthetic activity, presumably by increasing the proportion and intensity of blue light; at the same time, the highest transpiration index was found under RL. The results obtained indicate that the combined effect of additional RL+FRL can accelerate the development of pine plants by increasing the number of xylem cells and increasing the number of aboveground parts but not the photosynthetic activity or the accumulation of secondary metabolites.
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Affiliation(s)
- Pavel Pashkovskiy
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (Y.I.); (A.I.); (I.Z.); (A.A.); (D.A.); (G.G.)
| | - Mikhail Vereshchagin
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (Y.I.); (A.I.); (I.Z.); (A.A.); (D.A.); (G.G.)
| | - Alexander Kartashov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (Y.I.); (A.I.); (I.Z.); (A.A.); (D.A.); (G.G.)
| | - Yury Ivanov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (Y.I.); (A.I.); (I.Z.); (A.A.); (D.A.); (G.G.)
| | - Alexandra Ivanova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (Y.I.); (A.I.); (I.Z.); (A.A.); (D.A.); (G.G.)
| | - Ilya Zlobin
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (Y.I.); (A.I.); (I.Z.); (A.A.); (D.A.); (G.G.)
| | - Anna Abramova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (Y.I.); (A.I.); (I.Z.); (A.A.); (D.A.); (G.G.)
| | - Darya Ashikhmina
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (Y.I.); (A.I.); (I.Z.); (A.A.); (D.A.); (G.G.)
| | - Galina Glushko
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (Y.I.); (A.I.); (I.Z.); (A.A.); (D.A.); (G.G.)
| | - Vladimir D. Kreslavski
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino 142290, Russia;
| | - Vladimir V. Kuznetsov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (Y.I.); (A.I.); (I.Z.); (A.A.); (D.A.); (G.G.)
- Department of Plant Physiology, Biotechnology and Bioinformatics, Biological Institute, National Research Tomsk State University, Tomsk 634050, Russia
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Ferroni L, Živčak M. Photosynthesis under Environmental Fluctuations: A Challenge for Plants, a Challenge for Researchers. PLANTS (BASEL, SWITZERLAND) 2023; 12:4146. [PMID: 38140473 PMCID: PMC10747161 DOI: 10.3390/plants12244146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 10/13/2023] [Indexed: 12/24/2023]
Abstract
The ability of plants to cope successfully with environmental fluctuations is a result of their evolution in subaerial environments, where fluctuations in parameters such as temperature, light, and water availability, are the norm and stable states are the exception [...].
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Affiliation(s)
- Lorenzo Ferroni
- Department of Environmental and Prevention Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Marek Živčak
- Institute of Plant and Environmental Sciences, Slovak University of Agriculture, 94976 Nitra, Slovakia
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