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Yu XF, Zeng XX, Wang XY, Du J, Wang XH, Liu YJ, Chen ML, Zhang XY, Xiao X, Yang LJ, Lei T, Gao SP, Li X, Jiang MY, Tao Q. Integrated cell wall and transcriptomic analysis revealed the mechanism underlying zinc-induced alleviation of cadmium toxicity in Cosmos bipinnatus. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 214:108940. [PMID: 39024781 DOI: 10.1016/j.plaphy.2024.108940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 07/12/2024] [Accepted: 07/14/2024] [Indexed: 07/20/2024]
Abstract
Plant growth is severely harmed by cadmium (Cd) contamination, while the addition of zinc (Zn) can reduce the toxic effects of Cd. However, the interaction between Cd and Zn on the molecular mechanism and cell wall of Cosmosbipinnatus is unclear. In this study, a transcriptome was constructed using RNA-sequencing. In C. bipinnatus root transcriptome data, the expression of 996, 2765, and 3023 unigenes were significantly affected by Cd, Zn, and Cd + Zn treatments, respectively, indicating different expression patterns of some metal transporters among the Cd, Zn, and Cd + Zn treatments. With the addition of Zn, the damage to the cell wall was reduced, both the proportion and content of polysaccharides in the cell wall were changed, and Cd accumulation was decreased by 32.34%. In addition, we found that Cd and Zn mainly accumulated in pectins, the content of which increased by 30.79% and 61.4% compared to the CK treatment. Thus, Zn could alleviate the toxicity of Cd to C. bipinnatus. This study revealed the interaction between Cd and Zn at the physiological and molecular levels, broadening our understanding of the mechanisms of tolerance to Cd and Zn stress in cosmos.
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Affiliation(s)
- Xiao-Fang Yu
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Xiao-Xuan Zeng
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiao-Yu Wang
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jie Du
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xin-Hao Wang
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yu-Jia Liu
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mao-Lin Chen
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xin-Yu Zhang
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xue Xiao
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Li-Juan Yang
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ting Lei
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Su-Ping Gao
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xi Li
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ming-Yan Jiang
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qi Tao
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, China
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Ambroise V, Legay S, Jozefczak M, Leclercq CC, Planchon S, Hausman JF, Renaut J, Cuypers A, Sergeant K. Impact of Heavy Metals on Cold Acclimation of Salix viminalis Roots. Int J Mol Sci 2024; 25:1545. [PMID: 38338824 PMCID: PMC10855682 DOI: 10.3390/ijms25031545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/15/2024] [Accepted: 01/19/2024] [Indexed: 02/12/2024] Open
Abstract
In nature, plants are exposed to a range of climatic conditions. Those negatively impacting plant growth and survival are called abiotic stresses. Although abiotic stresses have been extensively studied separately, little is known about their interactions. Here, we investigate the impact of long-term mild metal exposure on the cold acclimation of Salix viminalis roots using physiological, transcriptomic, and proteomic approaches. We found that, while metal exposure significantly affected plant morphology and physiology, it did not impede cold acclimation. Cold acclimation alone increased glutathione content and glutathione reductase activity. It also resulted in the increase in transcripts and proteins belonging to the heat-shock proteins and related to the energy metabolism. Exposure to metals decreased antioxidant capacity but increased catalase and superoxide dismutase activity. It also resulted in the overexpression of transcripts and proteins related to metal homeostasis, protein folding, and the antioxidant machinery. The simultaneous exposure to both stressors resulted in effects that were not the simple addition of the effects of both stressors taken separately. At the antioxidant level, the response to both stressors was like the response to metals alone. While this should have led to a reduction of frost tolerance, this was not observed. The impact of the simultaneous exposure to metals and cold acclimation on the transcriptome was unique, while at the proteomic level the cold acclimation component seemed to be dominant. Some genes and proteins displayed positive interaction patterns. These genes and proteins were related to the mitigation and reparation of oxidative damage, sugar catabolism, and the production of lignans, trehalose, and raffinose. Interestingly, none of these genes and proteins belonged to the traditional ROS homeostasis system. These results highlight the importance of the under-studied role of lignans and the ROS damage repair and removal system in plants simultaneously exposed to multiple stressors.
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Affiliation(s)
- Valentin Ambroise
- Greentech Innovation Centre (GTIC), Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (V.A.); (S.L.); (C.C.L.); (S.P.); (J.-F.H.); (J.R.)
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, B-3590 Diepenbeek, Belgium; (M.J.); (A.C.)
| | - Sylvain Legay
- Greentech Innovation Centre (GTIC), Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (V.A.); (S.L.); (C.C.L.); (S.P.); (J.-F.H.); (J.R.)
| | - Marijke Jozefczak
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, B-3590 Diepenbeek, Belgium; (M.J.); (A.C.)
| | - Céline C. Leclercq
- Greentech Innovation Centre (GTIC), Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (V.A.); (S.L.); (C.C.L.); (S.P.); (J.-F.H.); (J.R.)
| | - Sebastien Planchon
- Greentech Innovation Centre (GTIC), Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (V.A.); (S.L.); (C.C.L.); (S.P.); (J.-F.H.); (J.R.)
| | - Jean-Francois Hausman
- Greentech Innovation Centre (GTIC), Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (V.A.); (S.L.); (C.C.L.); (S.P.); (J.-F.H.); (J.R.)
| | - Jenny Renaut
- Greentech Innovation Centre (GTIC), Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (V.A.); (S.L.); (C.C.L.); (S.P.); (J.-F.H.); (J.R.)
| | - Ann Cuypers
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, B-3590 Diepenbeek, Belgium; (M.J.); (A.C.)
| | - Kjell Sergeant
- Greentech Innovation Centre (GTIC), Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg; (V.A.); (S.L.); (C.C.L.); (S.P.); (J.-F.H.); (J.R.)
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M'Rah S, Marichali A, M'Rabet Y, Chatti S, Casabianca H, Hosni K. Morphology, physiology, and biochemistry of zinc-stressed caraway plants. PROTOPLASMA 2023; 260:853-868. [PMID: 36329347 DOI: 10.1007/s00709-022-01818-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 10/22/2022] [Indexed: 06/16/2023]
Abstract
A greenhouse pot experiment was conducted to evaluate the impact of zinc supply (0, 1, and 2 mM Zn as ZnSO4) on morpho-physiological and biochemical parameters of caraway (Carum carvi L.). Exposure to different Zn concentrations for 12 weeks compromised severely all growth parameters (plant height, number of secondary branches, diameter of primary and secondary branches, fresh and dry weight of aerial parts and roots) yield and its components (number of umbels per primary branches and secondary branches; number of umbel per plant; number of seeds per plant; and the weight of 1000 seeds). These manifestations were intimately linked with excessive accumulation of Zn in roots and leaves, alteration of the content of photosynthetic pigments, and extended lipid peroxidation. A manifest increment of proline and soluble sugar content was also observed in response to Zn application. Lipid content in seeds was dropped in Zn-treated plants and the fatty acid profiles were profoundly affected as they were enriched with saturated fatty acids at the expense of unsaturated ones. While improving their oxidative stability as revealed by the reduced values calculated oxidizability and oxidative susceptibility, Zn treatment reduced the lipid nutritional quality of caraway seeds. Moreover, Zn treatment reduced the essential oil yield and its main component carvone while it enhanced the content of its precursor limonene. It also induced alteration of terpene metabolism as revealed in the redirection of the carbon flux to the shikimate/phenylpropanoid pathway resulting in the stimulation of the production of phenolic compounds and their subsequent antioxidant activities.
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Affiliation(s)
- Sabah M'Rah
- Laboratoire Des Substances Naturelles, Institut National de Recherche Et d'Analyse Physico-Chimique (INRAP), Biorechpôle de Sidi Thabet, 2020, Ariana, Tunisia
- Laboratoire Productivité Végétale Et Contraintes Environnementales, Faculté Des Sciences de Tunis, Université Tunis El-Manar, 2092, Tunis, Tunisia
| | - Ahmed Marichali
- Laboratoire Des Substances Naturelles, Institut National de Recherche Et d'Analyse Physico-Chimique (INRAP), Biorechpôle de Sidi Thabet, 2020, Ariana, Tunisia
| | - Yassine M'Rabet
- Laboratoire Des Substances Naturelles, Institut National de Recherche Et d'Analyse Physico-Chimique (INRAP), Biorechpôle de Sidi Thabet, 2020, Ariana, Tunisia
| | - Saber Chatti
- Laboratoire Des Substances Naturelles, Institut National de Recherche Et d'Analyse Physico-Chimique (INRAP), Biorechpôle de Sidi Thabet, 2020, Ariana, Tunisia
| | - Hervé Casabianca
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut Des Sciences Analytiques, UMR 5280, 5 Rue de La Doua, 69100, Villeurbanne, France
| | - Karim Hosni
- Laboratoire Des Substances Naturelles, Institut National de Recherche Et d'Analyse Physico-Chimique (INRAP), Biorechpôle de Sidi Thabet, 2020, Ariana, Tunisia.
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Adil MF, Sehar S, Chen S, Lwalaba JLW, Jilani G, Chen ZH, Shamsi IH. Stress signaling convergence and nutrient crosstalk determine zinc-mediated amelioration against cadmium toxicity in rice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 230:113128. [PMID: 34979311 DOI: 10.1016/j.ecoenv.2021.113128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/15/2021] [Accepted: 12/25/2021] [Indexed: 06/14/2023]
Abstract
Consumption of rice (Oryza sativa L.) is one of the major pathways for heavy metal bioaccumulation in humans over time. Understanding the molecular responses of rice to heavy metal contamination in agriculture is useful for eco-toxicological assessment of cadmium (Cd) and its interaction with zinc (Zn). In certain crops, the impacts of Cd stress or Zn nutrition on the biophysical chemistry and gene expression have been widely investigated, but their molecular interactions at transcriptomic level, particularly in rice roots, are still elusive. Here, hydroponic investigations were carried out with two rice genotypes (Yinni-801 and Heizhan-43), varying in Cd contents in plant tissues to determine their transcriptomic responses upon Cd15 (15 µM) and Cd15+Zn50 (50 µM) treatments. High throughput RNA-sequencing analysis confirmed that 496 and 2407 DEGs were significantly affected by Cd15 and Cd15+Zn50, respectively, among which 1016 DEGs were commonly induced in both genotypes. Multitude of DEGs fell under the category of protein kinases, such as calmodulin (CaM) and calcineurin B-like protein-interacting protein kinases (CBL), indicating a dynamic shift in hormonal signal transduction and Ca2+ involvement with the onset of treatments. Both genotypes expressed a mutual regulation of transcription factors (TFs) such as WRKY, MYB, NAM, AP2, bHLH and ZFP families under both treatments, whereas genes econding ABC transporters (ABCs), high affinity K+ transporters (HAKs) and Glutathione-S-transferases (GSTs), were highly up-regulated under Cd15+Zn50 in both genotypes. Zinc addition triggered more signaling cascades and detoxification related genes in regulation of immunity along with the suppression of Cd-induced DEGs and restriction of Cd uptake. Conclusively, the effective integration of breeding techniques with candidate genes identified in this study as well as economically and technologically viable methods, such as Zn nutrient management, could pave the way for selecting cultivars with promising agronomic qualities and reduced Cd for sustainable rice production.
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Affiliation(s)
- Muhammad Faheem Adil
- Zhejiang Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Shafaque Sehar
- Zhejiang Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Si Chen
- Zhejiang Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Jonas Lwalaba Wa Lwalaba
- Zhejiang Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Ghulam Jilani
- Institute of Soil Science, PMAS Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Zhong-Hua Chen
- School of Science, Western Sydney University, Penrith, NSW 2751, Australia; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2751, Australia
| | - Imran Haider Shamsi
- Zhejiang Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China.
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Shen CC, Chen MX, Xiao T, Zhang C, Shang J, Zhang KL, Zhu FY. Global proteome response to Pb(II) toxicity in poplar using SWATH-MS-based quantitative proteomics investigation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 220:112410. [PMID: 34126303 DOI: 10.1016/j.ecoenv.2021.112410] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 05/07/2023]
Abstract
Lead (Pb) toxicity is a growing serious environmental pollution that threatens human health and crop productivity. Poplar, as an important economic and ecological forest species, has the characteristics of fasting growth and accumulating heavy metals, which is a powerful model plant for phytoremediation. Here, a novel label-free quantitative proteomic platform of SWATH-MS was applied to detect proteome changes in poplar seedling roots following Pb treatment. In total 4388 unique proteins were identified and quantified, among which 542 proteins showed significant abundance changes upon Pb(II) exposure. Functional categorizations revealed that differentially expressed proteins (DEPs) primarily distributed in specialized biological processes. Particularly, lignin and flavonoid biosynthesis pathway were strongly activated upon Pb exposure, implicating their potential roles for Pb detoxification in poplar. Furthermore, hemicellulose and pectin related cell wall proteins exhibited increased abundances, where may function as a sequestration reservoir to reduce Pb toxicity in cytoplasm. Simultaneously, up-regulation of glutathione metabolism may serve as a protective role for Pb-induced oxidative damages in poplar. Further correlation investigation revealed an extra layer of post-transcriptional regulation during Pb response in poplar. Overall, our work represents multiply potential regulators in mediating Pb tolerance in poplar, providing molecular targets and strategies for phytoremediation.
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Affiliation(s)
- Cong-Cong Shen
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Mo-Xian Chen
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Tian Xiao
- Department of Cell Biology and Genetics, School of Medicine, Shenzhen University, Shenzhen, Guangdong, China
| | - Cheng Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China; International Cultivar Registration Center for Osmanthus, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Jun Shang
- SpecAlly Life Technology Co., Ltd and Wuhan Institute of Biotechnology, Wuhan, China
| | - Kai-Lu Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Fu-Yuan Zhu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China; International Cultivar Registration Center for Osmanthus, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
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Abstract
This review highlights the most recent updated information available about Zn phytotoxicity at physiological, biochemical and molecular levels, uptake mechanisms as well as excess Zn homeostasis in plants. Zinc (Zn) is a natural component of soil in terrestrial environments and is a vital element for plant growth, as it performs imperative functions in numerous metabolic pathways. However, potentially noxious levels of Zn in soils can result in various alterations in plants like reduced growth, photosynthetic and respiratory rate, imbalanced mineral nutrition and enhanced generation of reactive oxygen species. Zn enters into soils through various sources, such as weathering of rocks, forest fires, volcanoes, mining and smelting activities, manure, sewage sludge and phosphatic fertilizers. The rising alarm in environmental facet, as well as, the narrow gap between Zn essentiality and toxicity in plants has drawn the attention of the scientific community to its effects on plants and crucial role in agricultural sustainability. Hence, this review focuses on the most recent updates about various physiological and biochemical functions perturbed by high levels of Zn, its mechanisms of uptake and transport as well as molecular aspects of surplus Zn homeostasis in plants. Moreover, this review attempts to understand the mechanisms of Zn toxicity in plants and to present novel perspectives intended to drive future investigations on the topic. The findings will further throw light on various mechanisms adopted by plants to cope with Zn stress which will be of great significance to breeders for enhancing tolerance to Zn contamination.
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Affiliation(s)
- Harmanjit Kaur
- Department of Botany, Akal University, Bathinda, 151302, Punjab, India
| | - Neera Garg
- Department of Botany, Panjab University, Chandigarh, 160014, India.
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Vats S, Sudhakaran S, Bhardwaj A, Mandlik R, Sharma Y, Kumar S, Tripathi DK, Sonah H, Sharma TR, Deshmukh R. Targeting aquaporins to alleviate hazardous metal(loid)s imposed stress in plants. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124910. [PMID: 33453583 DOI: 10.1016/j.jhazmat.2020.124910] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 12/02/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023]
Abstract
Uptake of hazardous metal(loid)s adversely affects plants and imposes a threat to the entire food chain. Here, the role of aquaporins (AQPs) providing tolerance against hazardous metal(loid)s in plants is discussed to provide a perspective on the present understanding, knowledge gaps, and opportunities. Plants adopt complex molecular and physiological mechanisms for better tolerance, adaptability, and survival under metal(loid)s stress. Water conservation in plants is one such primary strategies regulated by AQPs, a family of channel-forming proteins facilitating the transport of water and many other solutes. The strategy is more evident with reports suggesting differential expression of AQPs adopted by plants to cope with the heavy metal stress. In this regard, numerous studies showing enhanced tolerance against hazardous elements in plants due to AQPs activity are discussed. Consequently, present understanding of various aspects of AQPs, such as tertiary-structure, transport activity, solute-specificity, differential expression, gating mechanism, and subcellular localization, are reviewed. Similarly, various tools and techniques are discussed in detail aiming at efficient utilization of resources and knowledge to combat metal(loid)s stress. The scope of AQP transgenesis focusing on heavy metal stresses is also highlighted. The information provided here will be helpful to design efficient strategies for the development of metal(loid)s stress-tolerant crops.
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Affiliation(s)
- Sanskriti Vats
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Sreeja Sudhakaran
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Department of Biotechnology, Punjab University, Chandigarh, India
| | - Anupriya Bhardwaj
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Department of Biotechnology, Punjab University, Chandigarh, India
| | - Rushil Mandlik
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Department of Biotechnology, Punjab University, Chandigarh, India
| | - Yogesh Sharma
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Sudhir Kumar
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | | | - Humira Sonah
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Tilak Raj Sharma
- Division of Crop Science, Indian Council of Agricultural Research (ICAR), New Delhi, India
| | - Rupesh Deshmukh
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India.
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Neri A, Traversari S, Andreucci A, Francini A, Sebastiani L. The Role of Aquaporin Overexpression in the Modulation of Transcription of Heavy Metal Transporters under Cadmium Treatment in Poplar. PLANTS 2020; 10:plants10010054. [PMID: 33383680 PMCID: PMC7824648 DOI: 10.3390/plants10010054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 12/10/2020] [Accepted: 12/25/2020] [Indexed: 12/25/2022]
Abstract
Populus alba ‘Villafranca’ clone is well-known for its tolerance to cadmium (Cd). To determine the mechanisms of Cd tolerance of this species, wild-type (wt) plants were compared with transgenic plants over-expressing an aquaporin (aqua1, GenBank GQ918138). Plants were maintained in hydroponic conditions with Hoagland’s solution and treated with 10 µM of Cd, renewed every 5 d. The transcription levels of heavy metal transporter genes (PaHMA2, PaNRAMP1.3, PaNRAMP2, PaNRAMP3.1, PaNRAMP3.2, PaABCC9, and PaABCC13) were analyzed at 1, 7, and 60 d of treatment. Cd application did not induce visible toxicity symptoms in wt and aqua1 plants even after 2 months of treatment confirming the high tolerance of this poplar species to Cd. Most of the analyzed genes showed in wt plants a quick response in transcription at 1 d of treatment and an adaptation at 60 d. On the contrary, a lower transcriptional response was observed in aqua1 plants in concomitance with a higher Cd concentration in medial leaves. Moreover, PaHMA2 showed at 1 d an opposite trend within organs since it was up-regulated in root and stem of wt plants and in leaves of aqua1 plants. In summary, aqua1 overexpression in poplar improved Cd translocation suggesting a lower Cd sensitivity of aqua1 plants. This different response might be due to a different transcription of PaNRAMP3 genes that were more transcribed in wt line because of the importance of this gene in Cd compartmentalization.
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Affiliation(s)
- Andrea Neri
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy; (A.N.); (S.T.); (L.S.)
| | - Silvia Traversari
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy; (A.N.); (S.T.); (L.S.)
| | - Andrea Andreucci
- Department of Biology, University of Pisa, via Luca Ghini 13, 56126 Pisa, Italy
- Correspondence: (A.A.); (A.F.)
| | - Alessandra Francini
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy; (A.N.); (S.T.); (L.S.)
- Correspondence: (A.A.); (A.F.)
| | - Luca Sebastiani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy; (A.N.); (S.T.); (L.S.)
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De Caroli M, Furini A, DalCorso G, Rojas M, Di Sansebastiano GP. Endomembrane Reorganization Induced by Heavy Metals. PLANTS (BASEL, SWITZERLAND) 2020; 9:E482. [PMID: 32283794 PMCID: PMC7238196 DOI: 10.3390/plants9040482] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/04/2020] [Accepted: 04/07/2020] [Indexed: 12/18/2022]
Abstract
Plant cells maintain plasmatic concentrations of essential heavy metal ions, such as iron, zinc, and copper, within the optimal functional range. To do so, several molecular mechanisms have to be committed to maintain concentrations of non-essential heavy metals and metalloids, such as cadmium, mercury and arsenic below their toxicity threshold levels. Compartmentalization is central to heavy metals homeostasis and secretory compartments, finely interconnected by traffic mechanisms, are determinant. Endomembrane reorganization can have unexpected effects on heavy metals tolerance altering in a complex way membrane permeability, storage, and detoxification ability beyond gene's expression regulation. The full understanding of endomembrane role is propaedeutic to the comprehension of translocation and hyper-accumulation mechanisms and their applicative employment. It is evident that further studies on dynamic localization of these and many more proteins may significantly contribute to the understanding of heavy metals tolerance mechanisms. The aim of this review is to provide an overview about the endomembrane alterations involved in heavy metals compartmentalization and tolerance in plants.
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Affiliation(s)
- Monica De Caroli
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (M.D.C.); (M.R.)
| | - Antonella Furini
- Department of Biotechnology, University of Verona, 37134 Verona, Italy; (A.F.); (G.D.)
| | - Giovanni DalCorso
- Department of Biotechnology, University of Verona, 37134 Verona, Italy; (A.F.); (G.D.)
| | - Makarena Rojas
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (M.D.C.); (M.R.)
| | - Gian-Pietro Di Sansebastiano
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (M.D.C.); (M.R.)
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10
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Yang C, Qiu W, Chen Z, Chen W, Li Y, Zhu J, Rahman SU, Han Z, Jiang Y, Yang G, Tian J, Ma Q, Zhang Y. Phosphorus influence Cd phytoextraction in Populus stems via modulating xylem development, cell wall Cd storage and antioxidant defense. CHEMOSPHERE 2020; 242:125154. [PMID: 31675575 DOI: 10.1016/j.chemosphere.2019.125154] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/12/2019] [Accepted: 10/19/2019] [Indexed: 05/23/2023]
Abstract
The soils in mining lands with cadmium (Cd) contamination usually are deficient in nutrients. Disclosing how P nutrition and N:P stoichiometric ratio influences Cd accumulation and stress tolerance in stems of Populus spp. will facilitate the phytoremediation of mining sites polluted by Cd. In this study, investigations at the anatomical and physiological levels were conducted using a clone of Populus × euramericana. Both phosphorus deficiency and cadmium exposure inhibited xylem development via reducing cell layers in the xylem. Under P-sufficient condition, appropriate P status and balanced N:P ratio in stem promoted xylem development under Cd exposure via stimulating cell division, which enhanced Cd accumulation in stems. Cd accumulation in cell walls of collenchyma tissues of the stem was enhanced by P application due to increased polysaccharide production and cell wall affinity for Cd. The low P concentrations (0.3-0.4 mg g-1) and imbalanced N:P ratio under P deficiency inhibited the production of APX and ascorbate-GSH cycle, which increased oxidative stress and lipid peroxidation as indicated by high MDA concentration in stem. Under P-sufficient condition, the interactions between phytohormones and antioxidants play crucial roles in the process of antioxidant defense under Cd exposure. In conclusions, appropriate P addition and balanced N:P ratio enhanced secondary xylem development and promoted cadmium accumulation and stress tolerance in Populus stems, which can benefit the phytoextraction of Cd from Cd-contaminated soil.
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Affiliation(s)
- Can Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Wenwen Qiu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zexin Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Wenyi Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yunfei Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jingle Zhu
- Paulownia R&D Center of State Administration of Forestry and Grassland, Zhengzhou, Henan, 450003, China
| | - Siddiq Ur Rahman
- Department of Computer Science and Bioinformatics, Khushal Khan Khattak University, Karak, Khyber Pakhtunkhwa, 27200, Pakistan
| | - Zixuan Han
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yun Jiang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Guijuan Yang
- Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Jing Tian
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Qin Ma
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yi Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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11
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Corso M, García de la Torre VS. Biomolecular approaches to understanding metal tolerance and hyperaccumulation in plants. Metallomics 2020; 12:840-859. [DOI: 10.1039/d0mt00043d] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Trace metal elements are essential for plant growth but become toxic at high concentrations, while some non-essential elements, such as Cd and As, show toxicity even in traces.
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Affiliation(s)
- Massimiliano Corso
- Institut Jean-Pierre Bourgin
- Université Paris-Saclay
- INRAE
- AgroParisTech
- 78000 Versailles
| | - Vanesa S. García de la Torre
- Molecular Genetics and Physiology of Plants
- Faculty of Biology and Biotechnology
- Ruhr University Bochum
- 44801 Bochum
- Germany
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12
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Shu H, Zhang J, Liu F, Bian C, Liang J, Liang J, Liang W, Lin Z, Shu W, Li J, Shi Q, Liao B. Comparative Transcriptomic Studies on a Cadmium Hyperaccumulator Viola baoshanensis and Its Non-Tolerant Counterpart V. inconspicua. Int J Mol Sci 2019; 20:E1906. [PMID: 30999673 PMCID: PMC6515270 DOI: 10.3390/ijms20081906] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 04/14/2019] [Accepted: 04/16/2019] [Indexed: 12/29/2022] Open
Abstract
Many Viola plants growing in mining areas exhibit high levels of cadmium (Cd) tolerance and accumulation, and thus are ideal organisms for comparative studies on molecular mechanisms of Cd hyperaccumulation. However, transcriptomic studies of hyperaccumulative plants in Violaceae are rare. Viola baoshanensis is an amazing Cd hyperaccumulator in metalliferous areas of China, whereas its relative V. inconspicua is a non-tolerant accumulator that resides at non-metalliferous sites. Here, comparative studies by transcriptome sequencing were performed to investigate the key pathways that are potentially responsible for the differential levels of Cd tolerance between these two Viola species. A cascade of genes involved in the ubiquitin proteosome system (UPS) pathway were observed to have constitutively higher transcription levels and more activation in response to Cd exposure in V. baoshanensis, implying that the enhanced degradation of misfolded proteins may lead to high resistance against Cd in this hyperaccumulator. Many genes related to sucrose metabolism, especially those involved in callose and trehalose biosynthesis, are among the most differentially expressed genes between the two Viola species, suggesting a crucial role of sucrose metabolism not only in cell wall modification through carbon supply but also in the antioxidant system as signaling molecules or antioxidants. A comparison among transcriptional patterns of some known transporters revealed that several tonoplast transporters are up-regulated in V. baoshanensis under Cd stress, suggesting more efficient compartmentalization of Cd in the vacuoles. Taken together, our findings provide valuable insight into Cd hypertolerance in V. baoshanensis, and the corresponding molecular mechanisms will be useful for future genetic engineering in phytoremediation.
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Affiliation(s)
- Haoyue Shu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Jun Zhang
- School of Biosciences and Biopharmaceutics, Guangdong Province Key Laboratory for Biotechnology Drug Candidates, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Fuye Liu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Chao Bian
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China.
| | - Jieliang Liang
- School of Life Sciences, South China Normal University, Guangzhou 510631, China.
| | - Jiaqi Liang
- School of Biosciences and Biopharmaceutics, Guangdong Province Key Laboratory for Biotechnology Drug Candidates, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Weihe Liang
- School of Biosciences and Biopharmaceutics, Guangdong Province Key Laboratory for Biotechnology Drug Candidates, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Zhiliang Lin
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Wensheng Shu
- School of Life Sciences, South China Normal University, Guangzhou 510631, China.
| | - Jintian Li
- School of Life Sciences, South China Normal University, Guangzhou 510631, China.
| | - Qiong Shi
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China.
| | - Bin Liao
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
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13
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Ariani A, Barozzi F, Sebastiani L, di Toppi LS, di Sansebastiano GP, Andreucci A. AQUA1 is a mercury sensitive poplar aquaporin regulated at transcriptional and post-translational levels by Zn stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 135:588-600. [PMID: 30424909 DOI: 10.1016/j.plaphy.2018.10.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/30/2018] [Accepted: 10/30/2018] [Indexed: 05/19/2023]
Abstract
Aquaporins are water channel proteins that regulate plant development, growth, and response to environmental stresses. Populus trichocarpa is one of the plants with the highest number of aquaporins in its genome, but only few of them have been characterized at the whole plant functional level. Here we analyzed a putative aquaporin gene, aqua1, a gene that encodes for a protein of 257 amino acid with the typical NPA (Asp-Pro-Ala) signature motif of the aquaporin gene family. aqua1 was down-regulated of ∼10 fold under excess Zn in both leaves and roots, and conferred Zn tolerance when expressed in yeast Zn hypersensitive strain. In vivo localization of AQUA1-GFP in Arabidopsis protoplast showed a heterogeneous distribution of this protein on different membranes destined to form aggregates related to autophagic multivesicular bodies. Zn-dependent AQUA1-GFP re-localization was perturbed by phosphatases' and kinases' inhibitors that could affect both intracellular trafficking and aquaporins' activity. Exposed to high concentration of Zn, AQUA1 also co-localized with AtTIP1;1, a well-known Arabidopsis vacuolar marker, probably in pro-vacuolar multivesicular bodies. These findings suggest that high concentration of Zn down-regulates aqua1 and causes its re-localization in new forming pro-vacuoles. This Zn-dependent re-localization appears to be mediated by mechanisms regulating intracellular trafficking and aquaporins' post-translational modifications. This functional characterization of a poplar aquaporin in response to excess Zn will be a useful reference for understanding aquaporins' roles and regulation in response to high concentration of Zn in poplar.
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Affiliation(s)
- Andrea Ariani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Fabrizio Barozzi
- DISTEBA, Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Prov. le Lecce - Monteroni, 73100, Lecce, Italy
| | - Luca Sebastiani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
| | | | - Gian Pietro di Sansebastiano
- DISTEBA, Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Prov. le Lecce - Monteroni, 73100, Lecce, Italy
| | - Andrea Andreucci
- Department of Biology, Università degli Studi di Pisa, I-56126, Pisa, Italy.
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14
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Marzilli M, Di Santo P, Palumbo G, Maiuro L, Paura B, Tognetti R, Cocozza C. Cd and Cu accumulation, translocation and tolerance in Populus alba clone (Villafranca) in autotrophic in vitro screening. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:10058-10068. [PMID: 29380203 DOI: 10.1007/s11356-018-1299-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 01/15/2018] [Indexed: 06/07/2023]
Abstract
The present study investigated accumulation, translocation and tolerance of autotrophic Populus alba clone "Villafranca" in response to excess concentrations of cadmium (Cd) and copper (Cu) provided to the plants. For this purpose, increasing concentrations of Cd (0, 5, 50 and 250 μM) and Cu (0, 5, 50, 250 and 500 μM) were administered to the growth medium in which micropropagated poplar plantlets were exposed to metal treatments for 15 days. Filter bags, instead of the conventional in vitro screening, were applied to improve the experimental design. Results showed that Cd and Cu increased in shoots and roots at increasing metal concentration in the medium. The highest Cd content was found in leaves, while the highest Cu content was found in roots. In "Villafranca", Cu showed toxic effects on the development of the seedlings, especially at the highest concentrations, reducing plant dry mass. However, the tolerance index (Ti) indicated good tolerance in this clone under exposure to excess metal concentrations, whereas plants had higher translocation factor (Tf). We recommend in vitro selection of tolerant genotypes, aimed at providing early indication on accumulation potentiality and tolerance capability in research on plant sensitivity to excess heavy metal concentrations.
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Affiliation(s)
- Morena Marzilli
- Dipartimento Agricoltura, Ambiente e Alimenti, Università degli Studi del Molise, Campobasso, Italy
| | - Patrick Di Santo
- Dipartimento Agricoltura, Ambiente e Alimenti, Università degli Studi del Molise, Campobasso, Italy
| | - Giuseppe Palumbo
- Dipartimento Agricoltura, Ambiente e Alimenti, Università degli Studi del Molise, Campobasso, Italy
| | - Lucia Maiuro
- Dipartimento Agricoltura, Ambiente e Alimenti, Università degli Studi del Molise, Campobasso, Italy
| | - Bruno Paura
- Dipartimento Agricoltura, Ambiente e Alimenti, Università degli Studi del Molise, Campobasso, Italy
| | - Roberto Tognetti
- Dipartimento Agricoltura, Ambiente e Alimenti, Università degli Studi del Molise, Campobasso, Italy
| | - Claudia Cocozza
- Consiglio Nazionale delle Ricerche (CNR), Istituto per la Protezione Sostenibile delle Piante (IPSP), Sesto Fiorentino, Italy.
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15
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Ugolini F, Mariotti B, Maltoni A, Tani A, Salbitano F, Izquierdo CG, Macci C, Masciandaro G, Tognetti R. A tree from waste: Decontaminated dredged sediments for growing forest tree seedlings. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 211:269-277. [PMID: 29408075 DOI: 10.1016/j.jenvman.2018.01.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 01/19/2018] [Accepted: 01/21/2018] [Indexed: 06/07/2023]
Abstract
The sediments dredged from a waterway and decontaminated through a phytoremediation process have been used as substrates alternatively to the traditional forest nursery substrate for pot productions of holm oak (Quercus ilex L.) planting stocks. The substrates, made by mixing decontaminated sediments to agricultural soil at different degrees, were tested in order to evaluate their suitability as growth substrates. The experiment was carried out at the nursery of the Department of Agricultural, Food and Forestry Systems of the University of Florence (Italy). The experimental design consisted of four randomized blocks with six pots as replicates for each of the following treatments: 100% sediments, 66% sediments, 33% sediments, 100% agronomic soil and 100% traditional peat based substrate. In each pot, one holm oak acorn was seeded. Germination and both physiological and morphological traits of the seedlings were analysed during and at the end of the first growing season. Holm oak grown in phytoremediated sediments at higher concentrations showed germination levels comparable to those in the traditional substrate, and survival capacity (especially in 66% sediments) slightly higher than in 100% soil. Physiological performance of seedlings resembled that on the traditional substrate which required the addition of fertilizer, at least for the first growing season. Seedlings grown in mixed substrates with higher sediment concentrations occasionally showed better photosynthetic capacity with improved connectivity between the units of the photosystem II. At the end of the first growing season, height as well as the number of growth flushes of the seedlings grown in sole sediment or soil-sediment substrates were similar to what generally is observed for forest nursery stock of Quercus spp.. Regarding the root-system articulation and growth in depth, results in the mixed substrates were comparable to those for seedlings grown in the traditional forest nursery media, and higher than seedlings grown in 100% agronomic soil. According to our results, the reclamation of dredged sediments can provide appropriate nursery substrate for germination beds for forestry species.
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Affiliation(s)
- Francesca Ugolini
- Institute of Biometeorology - National Research Council of Italy, Via G. Caproni 8, 50145 Firenze, Italy.
| | - Barbara Mariotti
- Dipartimento di Gestione dei Sistemi Agrari, Alimentari e Forestali (GESAAF), Università di Firenze, Via S. Bonaventura 13, 50145 Firenze, Italy
| | - Alberto Maltoni
- Dipartimento di Gestione dei Sistemi Agrari, Alimentari e Forestali (GESAAF), Università di Firenze, Via S. Bonaventura 13, 50145 Firenze, Italy
| | - Andrea Tani
- Dipartimento di Gestione dei Sistemi Agrari, Alimentari e Forestali (GESAAF), Università di Firenze, Via S. Bonaventura 13, 50145 Firenze, Italy
| | - Fabio Salbitano
- Dipartimento di Gestione dei Sistemi Agrari, Alimentari e Forestali (GESAAF), Università di Firenze, Via S. Bonaventura 13, 50145 Firenze, Italy
| | - Carlos García Izquierdo
- Consejo Superior de Investigaciones Cientifica - Centro de Edafologia y Biologia Applicada del Segura, Campus Espinardo, Murcia, Spain
| | - Cristina Macci
- Institute of Ecosystem Study- National Research Council of Italy, c/o Area di Ricerca di Pisa, via Moruzzi 1, 56124 Pisa, Italy
| | - Graziana Masciandaro
- Institute of Ecosystem Study- National Research Council of Italy, c/o Area di Ricerca di Pisa, via Moruzzi 1, 56124 Pisa, Italy
| | - Roberto Tognetti
- Dipartimento di Agricoltura, Ambiente e Alimenti, Università del Molise, 86100 Campobasso, Italy; The EFI Project Centre on Mountain Forests (MOUNTFOR), Edmund Mach Foundation, via E. Mach 1, 38010 San Michele all'Adige, TN, Italy
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16
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Pietrini F, Di Baccio D, Iori V, Veliksar S, Lemanova N, Juškaitė L, Maruška A, Zacchini M. Investigation on metal tolerance and phytoremoval activity in the poplar hybrid clone "Monviso" under Cu-spiked water: Potential use for wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 592:412-418. [PMID: 28334619 DOI: 10.1016/j.scitotenv.2017.03.101] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 03/10/2017] [Accepted: 03/10/2017] [Indexed: 06/06/2023]
Abstract
A serious concern for the environmental and human health is represented by the increasing copper (Cu) occurrence in agricultural soils and waters, because of the possible food contamination and bioaugmentation along the trophic chain. The request for the decontamination of different matrices with an environmentally sustainable technology as the phytoremediation should be addressed by selecting plant materials with improved pollutant tolerance and removal capability. With this purpose, plants of the hybrid poplar clone "Monviso" (Populus×generosa A. Henry×P. nigra L.) were grown in growth chamber under hydroponics and exposed to excess Cu concentrations (T1, 75μM Cu; T2, 150μM Cu), selected as about 5 and 10 times higher than those allowed by the Italian regulation on water use. Results evidenced a notable Cu tolerance by poplar plants, particularly at the lowest Cu concentration. At organ level, the root system was the most affected by Cu treatment, especially in T2-exposed plants. Copper determinations revealed that the metal was mostly bioaccumulated in the roots, with a limited amount reaching the shoots. Chlorophyll content and fluorescence analyses confirmed the visible symptoms in leaves, highlighting a good physiological status in T1-exposed plants. Contrarily, an impairment of the main processes associated to photosynthesis was observed in T2-exposed plants also by gas exchange measurements. Remarkably, the Cu content analysis of the spiked water solutions revealed that poplar plants succeeded in removing almost the 50% of the total Cu amount added. These results strengthen the evidence that poplar plants represent a useful eco-friendly bio-tool for the decontamination of metal polluted waters.
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Affiliation(s)
- Fabrizio Pietrini
- Institute of Agroenvironmental and Forest Biology, National Research Council, Monterotondo (RM), Italy
| | - Daniela Di Baccio
- Institute of Agroenvironmental and Forest Biology, National Research Council, Monterotondo (RM), Italy
| | - Valentina Iori
- Institute of Agroenvironmental and Forest Biology, National Research Council, Monterotondo (RM), Italy
| | - Sofia Veliksar
- Institute of Genetics, Physiology and Plant Protection, Academy of Science of Moldova, Chisinau, Moldova
| | - Natalia Lemanova
- Institute of Genetics, Physiology and Plant Protection, Academy of Science of Moldova, Chisinau, Moldova
| | - Liudvika Juškaitė
- Department of Biology, Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | - Audrius Maruška
- Department of Biology, Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | - Massimo Zacchini
- Institute of Agroenvironmental and Forest Biology, National Research Council, Monterotondo (RM), Italy.
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17
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Yang Q, Shohag MJI, Feng Y, He Z, Yang X. Transcriptome Comparison Reveals the Adaptive Evolution of Two Contrasting Ecotypes of Zn/Cd Hyperaccumulator Sedum alfredii Hance. FRONTIERS IN PLANT SCIENCE 2017; 8:425. [PMID: 28439276 PMCID: PMC5383727 DOI: 10.3389/fpls.2017.00425] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/13/2017] [Indexed: 05/29/2023]
Abstract
Hyperaccumulating ecotype (HE) and non-hyperaccumulating ecotype (NHE) of Sedum alfredii Hance belong to the same species but exhibit contrasting characteristics regarding hyperaccumulation and hypertolerance to cadmium and zinc. The Illumina Hiseq 2500 platform was employed to sequence HE and NHE to study the genetic evolution of this contrasting trait. Greater than 90 million clean reads were obtained and 118,479/228,051 unigenes of HE/NHE were annotated based on seven existing databases. We identified 149,668/319,830 single nucleotide polymorphisms (SNPs) and 12,691/14,428 simple sequence repeats (SSRs) of HE/NHE. We used a branch-site model to identify 18 divergent orthologous genes and 57 conserved orthologous genes of S. alfredii Hance. The divergent orthologous genes were mainly involved in the transcription and translation processes, protein metabolism process, calcium (Ca2+) pathway, stress response process and signal transduction process. To the best of our knowledge, this is the first study to use RNA-seq to compare the genetic evolution of hyperaccumulating and non-hyperaccumulating plants from the same species. In addition, this study made the sole concrete for further studies on molecular markers and divergent orthologous genes to depict the evolution process and formation of the hyperaccumulation and hypertolerance traits in S. alfredii Hance.
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Affiliation(s)
- Qianying Yang
- Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang UniversityHangzhou, China
| | - M. J. I. Shohag
- Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang UniversityHangzhou, China
- Department of Agriculture, Bangabandhu Sheikh Mujibur Rahman Science and Technology UniversityGopalganj, Bangladesh
| | - Ying Feng
- Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang UniversityHangzhou, China
| | - Zhenli He
- Institute of Food and Agricultural Sciences, Indian River Research and Education Center, University of FloridaFort Pierce, FL, USA
| | - Xiaoe Yang
- Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang UniversityHangzhou, China
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18
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Wang Y, Wang X, Wang C, Peng F, Wang R, Xiao X, Zeng J, Kang H, Fan X, Sha L, Zhang H, Zhou Y. Transcriptomic Profiles Reveal the Interactions of Cd/Zn in Dwarf Polish Wheat ( Triticum polonicum L.) Roots. Front Physiol 2017; 8:168. [PMID: 28386232 PMCID: PMC5362637 DOI: 10.3389/fphys.2017.00168] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 03/07/2017] [Indexed: 11/13/2022] Open
Abstract
Different intra- or interspecific wheat show different interactions of Cd/Zn. Normally, Zn has been/being widely utilized to reduce the Cd toxicity. In the present study, the DPW seedlings exhibited strong Cd tolerance. Zn and Cd mutually inhibited their uptake in the roots, showed antagonistic Cd/Zn interactions. However, Zn promoted the Cd transport from the roots to shoots, showed synergistic. In order to discover the interactive molecular responses, a transcriptome, including 123,300 unigenes, was constructed using RNA-Sequencing (RNA-Seq). Compared with CK, the expression of 1,269, 820, and 1,254 unigenes was significantly affected by Cd, Zn, and Cd+Zn, respectively. Only 381 unigenes were co-induced by these three treatments. Several metal transporters, such as cadmium-transporting ATPase and plant cadmium resistance 4, were specifically regulated by Cd+Zn. Other metal-related unigenes, such as ABC transporters, metal chelator, nicotianamine synthase (NAS), vacuolar iron transporters (VIT), metal-nicotianamine transporter YSL (YSL), and nitrate transporter (NRT), were regulated by Cd, but were not regulated by Cd+Zn. These results indicated that these transporters participated in the mutual inhibition of the Cd/Zn uptake in the roots, and also participated in the Cd transport, accumulation and detoxification. Meanwhile, some unigenes involved in other processes, such as oxidation-reduction, auxin metabolism, glutathione (GSH) metabolism nitrate transport, played different and important roles in the detoxification of these heavy metals.
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Affiliation(s)
- Yi Wang
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
| | - Xiaolu Wang
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
| | - Chao Wang
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
| | - Fan Peng
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
| | - Ruijiao Wang
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
| | - Xue Xiao
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
| | - Jian Zeng
- College of Resources, Sichuan Agricultural University Wenjiang, China
| | - Houyang Kang
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
| | - Xing Fan
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
| | - Lina Sha
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
| | - Haiqin Zhang
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
| | - Yonghong Zhou
- Triticeae Research Institute, Sichuan Agricultural UniversityWenjiang, China; Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural UniversityWenjiang, China
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19
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Luo ZB, He J, Polle A, Rennenberg H. Heavy metal accumulation and signal transduction in herbaceous and woody plants: Paving the way for enhancing phytoremediation efficiency. Biotechnol Adv 2016; 34:1131-1148. [DOI: 10.1016/j.biotechadv.2016.07.003] [Citation(s) in RCA: 203] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 05/24/2016] [Accepted: 07/12/2016] [Indexed: 11/26/2022]
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Wang Y, Wang X, Wang C, Wang R, Peng F, Xiao X, Zeng J, Fan X, Kang H, Sha L, Zhang H, Zhou Y. Proteomic Profiling of the Interactions of Cd/Zn in the Roots of Dwarf Polish Wheat (Triticum polonicum L.). FRONTIERS IN PLANT SCIENCE 2016; 7:1378. [PMID: 27683584 PMCID: PMC5021758 DOI: 10.3389/fpls.2016.01378] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/30/2016] [Indexed: 05/23/2023]
Abstract
Cd and Zn have been shown to interact antagonistically or synergistically in various plants. In the present study of dwarf polish wheat (DPW)roots, Cd uptake was inhibited by Zn, and Zn uptake was inhibited by Cd, suggesting that Cd and Zn interact antagonistically in this plant. A study of proteomic changes showed that Cd, Zn, and Cd+Zn stresses altered the expression of 206, 303, and 190 proteins respectively. Among these, 53 proteins were altered significantly in response to all these stresses (Cd, Zn, and Cd+Zn), whereas 58, 131, and 47 proteins were altered in response to individual stresses (Cd, Zn, and Cd+Zn, respectively). Sixty-one differentially expressed proteins (DEPs) were induced in response to both Cd and Zn stresses; 33 proteins were induced in response to both Cd and Cd+Zn stresses; and 57 proteins were induced in response to both Zn and Cd+Zn stresses. These results indicate that Cd and Zn induce differential molecular responses, which result in differing interactions of Cd/Zn. A number of proteins that mainly participate in oxidation-reduction and GSH, SAM, and sucrose metabolisms were induced in response to Cd stress, but not Cd+Zn stress. This result indicates that these proteins participate in Zn inhibition of Cd uptake and ultimately cause Zn detoxification of Cd. Meanwhile, a number of proteins that mainly participate in sucrose and organic acid metabolisms and oxidation-reduction were induced in response to Zn stress but not Cd+Zn stress. This result indicates that these proteins participate in Cd inhibition of Zn uptake and ultimately cause the Cd detoxification of Zn. Other proteins induced in response to Cd, Zn, or Cd+Zn stress, participate in ribosome biogenesis, DNA metabolism, and protein folding/modification and may also participate in the differential defense mechanisms.
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Affiliation(s)
- Yi Wang
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
| | - Xiaolu Wang
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
| | - Chao Wang
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
| | - Ruijiao Wang
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
| | - Fan Peng
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
| | - Xue Xiao
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
| | - Jian Zeng
- College of Resources, Sichuan Agricultural UniversitySichuan, China
| | - Xing Fan
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
| | - Houyang Kang
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
| | - Lina Sha
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
| | - Haiqin Zhang
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
| | - Yonghong Zhou
- Triticeae Research Institute, Sichuan Agricultural UniversitySichuan, China
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Ariani A, Francini A, Andreucci A, Sebastiani L. Over-expression of AQUA1 in Populus alba Villafranca clone increases relative growth rate and water use efficiency, under Zn excess condition. PLANT CELL REPORTS 2016; 35:289-301. [PMID: 26518428 DOI: 10.1007/s00299-015-1883-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 09/01/2015] [Accepted: 10/12/2015] [Indexed: 05/04/2023]
Abstract
Transgenic Populus alba over-expressing a TIP aquaporin ( aqua1) showed a higher growth rate under Zn excess, suggesting that aqua1 could be involved in water homeostasis, rather than in Zn homeostasis. Populus is the internationally accepted model for physiological and developmental studies of tree traits under stress. In plants, aquaporins facilitate and regulate the diffusion of water, however, few poplar aquaporins have been characterized to date. In this study, we reported for the first time an in vivo characterization of Populus alba clone Villafranca transgenic plants over-expressing a TIP aquaporin (aqua1) of P. x euramericana clone I-214. An AQUA1:GFP chimeric construct, over-expressed in P. alba Villafranca clones, shows a cytoplasmic localization in roots, and it localizes in guard cells in leaves. When over-expressed in transgenic plants, aqua1 confers a higher growth rate compared to wild-type (wt) plants, without affecting chlorophyll accumulation, relative water content (RWC), and fluorescence performances, but increasing the intrinsic Transpiration Efficiency. In response to Zn (1 mM), transgenic lines did not show a significant increase in Zn accumulation as compared to wt plants, even though the over-expression of this gene confers higher tolerance in root tissues. These results suggest that, in poplar plants, this gene could be principally involved in regulation of water homeostasis and biomass production, rather than in Zn homeostasis.
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Affiliation(s)
- Andrea Ariani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà, 33, 56127, Pisa, Italy.
- Department of Plant Sciences/MS1, University of California, 1 Shields Avenue, Davis, CA, 95616-8780, USA.
| | - Alessandra Francini
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà, 33, 56127, Pisa, Italy.
| | - Andrea Andreucci
- Department of Biology, University of Pisa, V. L. Ghini 13, 56126, Pisa, Italy.
| | - Luca Sebastiani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà, 33, 56127, Pisa, Italy.
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22
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González-Plaza JJ, Ortiz-Martín I, Muñoz-Mérida A, García-López C, Sánchez-Sevilla JF, Luque F, Trelles O, Bejarano ER, De La Rosa R, Valpuesta V, Beuzón CR. Transcriptomic Analysis Using Olive Varieties and Breeding Progenies Identifies Candidate Genes Involved in Plant Architecture. FRONTIERS IN PLANT SCIENCE 2016; 7:240. [PMID: 26973682 PMCID: PMC4773642 DOI: 10.3389/fpls.2016.00240] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 02/12/2016] [Indexed: 05/20/2023]
Abstract
Plant architecture is a critical trait in fruit crops that can significantly influence yield, pruning, planting density and harvesting. Little is known about how plant architecture is genetically determined in olive, were most of the existing varieties are traditional with an architecture poorly suited for modern growing and harvesting systems. In the present study, we have carried out microarray analysis of meristematic tissue to compare expression profiles of olive varieties displaying differences in architecture, as well as seedlings from their cross pooled on the basis of their sharing architecture-related phenotypes. The microarray used, previously developed by our group has already been applied to identify candidates genes involved in regulating juvenile to adult transition in the shoot apex of seedlings. Varieties with distinct architecture phenotypes and individuals from segregating progenies displaying opposite architecture features were used to link phenotype to expression. Here, we identify 2252 differentially expressed genes (DEGs) associated to differences in plant architecture. Microarray results were validated by quantitative RT-PCR carried out on genes with functional annotation likely related to plant architecture. Twelve of these genes were further analyzed in individual seedlings of the corresponding pool. We also examined Arabidopsis mutants in putative orthologs of these targeted candidate genes, finding altered architecture for most of them. This supports a functional conservation between species and potential biological relevance of the candidate genes identified. This study is the first to identify genes associated to plant architecture in olive, and the results obtained could be of great help in future programs aimed at selecting phenotypes adapted to modern cultivation practices in this species.
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Affiliation(s)
- Juan J. González-Plaza
- Departamento de Biología Celular, Genética y Fisiología, Facultad de Ciencias, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga - Consejo Superior de Investigaciones CientíficasMálaga, Spain
| | - Inmaculada Ortiz-Martín
- Departamento de Biología Celular, Genética y Fisiología, Facultad de Ciencias, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga - Consejo Superior de Investigaciones CientíficasMálaga, Spain
| | - Antonio Muñoz-Mérida
- Departamento Arquitectura de Computadores, Escuela Técnica Superior de Ingeniería Informática, Universidad de MálagaMálaga, Spain
| | - Carmen García-López
- Center for Advanced Studies in Olive Grove and Olive Oils, University of JaénJaén, Spain
| | | | - Francisco Luque
- Center for Advanced Studies in Olive Grove and Olive Oils, University of JaénJaén, Spain
| | - Oswaldo Trelles
- Departamento Arquitectura de Computadores, Escuela Técnica Superior de Ingeniería Informática, Universidad de MálagaMálaga, Spain
| | - Eduardo R. Bejarano
- Departamento de Biología Celular, Genética y Fisiología, Facultad de Ciencias, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga - Consejo Superior de Investigaciones CientíficasMálaga, Spain
| | | | - Victoriano Valpuesta
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga - Consejo Superior de Investigaciones CientíficasMálaga, Spain
| | - Carmen R. Beuzón
- Departamento de Biología Celular, Genética y Fisiología, Facultad de Ciencias, Instituto de Hortofruticultura Subtropical y Mediterránea, Universidad de Málaga - Consejo Superior de Investigaciones CientíficasMálaga, Spain
- *Correspondence: Carmen R. Beuzón
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C C, D T, G L, G A, D V, A F, T L, V DF, G L, G R, S S, R T. Challenging synergistic activity of poplar-bacteria association for the Cd phytostabilization. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:19546-19561. [PMID: 26268621 DOI: 10.1007/s11356-015-5097-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 07/20/2015] [Indexed: 06/04/2023]
Abstract
The synergistic activity between plants and microorganisms may contribute to the implementation of proactive management strategies in the stabilization of contaminated sites, although heavy metals, such as cadmium (Cd), are potentially toxic to them. The aim of this study was to evaluate the degree of tolerance to Cd contamination (supplying twice 40 mg kg(-1) of Cd) in poplar cuttings [clone I-214, P. × euramericana (Dode) Guinier] inoculated or not with two concentrations of Serratia marcescens strain (1 × 10(7) CFU/g and 2 × 10(7) CFU/g of potting mix). The response of the plant-bacteria system to excess Cd was investigated with special reference to the structural traits of plants and the functional efficiency of bacteria. Bacterial colonization and substrate components were previously assessed in order to define the best solution for formulating the experimental plant growth media. The tested plant-bacteria association, especially when bacteria were provided in double concentration, stimulated specific tolerance mechanisms to Cd through the promotion of the poplar growth. Inoculated plants produced larger leaves and increased stem diameter, while roots grew longer and wider in Cd-treated plants. The effect of bacterial inoculum on plant growth traits and metal partitioning in plant organs was assessed in order to define the potential of this poplar clone to be a suitable candidate for phytostabilization of Cd-contaminated soil. The final effect of the inoculation with bacteria, which alleviated the metal load and Cd phytotoxicity due to their bioaccumulation ability, suggests promising phytostabilization potential of these plant-bacteria associations.
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Affiliation(s)
- Cocozza C
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090, Pesche, Italy.
| | - Trupiano D
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090, Pesche, Italy
| | - Lustrato G
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090, Pesche, Italy
| | - Alfano G
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090, Pesche, Italy
| | - Vitullo D
- Dipartimento Agricoltura, Ambiente e Alimenti, Università degli Studi del Molise, 86100, Campobasso, Italy
| | - Falasca A
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090, Pesche, Italy
| | - Lomaglio T
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090, Pesche, Italy
| | - De Felice V
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090, Pesche, Italy
| | - Lima G
- Dipartimento Agricoltura, Ambiente e Alimenti, Università degli Studi del Molise, 86100, Campobasso, Italy
| | - Ranalli G
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090, Pesche, Italy
| | - Scippa S
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090, Pesche, Italy
| | - Tognetti R
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090, Pesche, Italy
- The EFI Project Centre on Mountain Forests (MOUNTFOR), Edmund Mach Foundation, 38010, San Michele all'Adige, Italy
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24
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Gonzalez E, Brereton NJB, Marleau J, Guidi Nissim W, Labrecque M, Pitre FE, Joly S. Meta-transcriptomics indicates biotic cross-tolerance in willow trees cultivated on petroleum hydrocarbon contaminated soil. BMC PLANT BIOLOGY 2015; 15:246. [PMID: 26459343 PMCID: PMC4603587 DOI: 10.1186/s12870-015-0636-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 09/30/2015] [Indexed: 05/09/2023]
Abstract
BACKGROUND High concentrations of petroleum hydrocarbon (PHC) pollution can be hazardous to human health and leave soils incapable of supporting agricultural crops. A cheap solution, which can help restore biodiversity and bring land back to productivity, is cultivation of high biomass yielding willow trees. However, the genetic mechanisms which allow these fast-growing trees to tolerate PHCs are as yet unclear. METHODS Salix purpurea 'Fish Creek' trees were pot-grown in soil from a former petroleum refinery, either lacking or enriched with C10-C50 PHCs. De novo assembled transcriptomes were compared between tree organs and impartially annotated without a priori constraint to any organism. RESULTS Over 45% of differentially expressed genes originated from foreign organisms, the majority from the two-spotted spidermite, Tetranychus urticae. Over 99% of T. urticae transcripts were differentially expressed with greater abundance in non-contaminated trees. Plant transcripts involved in the polypropanoid pathway, including phenylalanine ammonia-lyase (PAL), had greater expression in contaminated trees whereas most resistance genes showed higher expression in non-contaminated trees. CONCLUSIONS The impartial approach to annotation of the de novo transcriptomes, allowing for the possibility for multiple species identification, was essential for interpretation of the crop's response treatment. The meta-transcriptomic pattern of expression suggests a cross-tolerance mechanism whereby abiotic stress resistance systems provide improved biotic resistance. These findings highlight a valuable but complex biotic and abiotic stress response to real-world, multidimensional contamination which could, in part, help explain why crops such as willow can produce uniquely high biomass yields on challenging marginal land.
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Affiliation(s)
- Emmanuel Gonzalez
- Institut de recherche en biologie végétale, University of Montreal, 4101 Sherbrooke E, Montreal, QC, H1X 2B2, Canada.
| | - Nicholas J B Brereton
- Institut de recherche en biologie végétale, University of Montreal, 4101 Sherbrooke E, Montreal, QC, H1X 2B2, Canada.
| | - Julie Marleau
- Institut de recherche en biologie végétale, University of Montreal, 4101 Sherbrooke E, Montreal, QC, H1X 2B2, Canada.
| | | | - Michel Labrecque
- Institut de recherche en biologie végétale, University of Montreal, 4101 Sherbrooke E, Montreal, QC, H1X 2B2, Canada.
- Montreal Botanical Gardens, 4101 Sherbrooke E, Montreal, QC, H1X 2B2, Canada.
| | - Frederic E Pitre
- Institut de recherche en biologie végétale, University of Montreal, 4101 Sherbrooke E, Montreal, QC, H1X 2B2, Canada.
- Montreal Botanical Gardens, 4101 Sherbrooke E, Montreal, QC, H1X 2B2, Canada.
| | - Simon Joly
- Institut de recherche en biologie végétale, University of Montreal, 4101 Sherbrooke E, Montreal, QC, H1X 2B2, Canada.
- Montreal Botanical Gardens, 4101 Sherbrooke E, Montreal, QC, H1X 2B2, Canada.
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Ariani A, Di Baccio D, Romeo S, Lombardi L, Andreucci A, Lux A, Horner DS, Sebastiani L. RNA sequencing of Populus x canadensis roots identifies key molecular mechanisms underlying physiological adaption to excess zinc. PLoS One 2015; 10:e0117571. [PMID: 25671786 PMCID: PMC4324836 DOI: 10.1371/journal.pone.0117571] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 12/28/2014] [Indexed: 11/19/2022] Open
Abstract
Populus x canadensis clone I-214 exhibits a general indicator phenotype in response to excess Zn, and a higher metal uptake in roots than in shoots with a reduced translocation to aerial parts under hydroponic conditions. This physiological adaptation seems mainly regulated by roots, although the molecular mechanisms that underlie these processes are still poorly understood. Here, differential expression analysis using RNA-sequencing technology was used to identify the molecular mechanisms involved in the response to excess Zn in root. In order to maximize specificity of detection of differentially expressed (DE) genes, we consider the intersection of genes identified by three distinct statistical approaches (61 up- and 19 down-regulated) and validate them by RT-qPCR, yielding an agreement of 93% between the two experimental techniques. Gene Ontology (GO) terms related to oxidation-reduction processes, transport and cellular iron ion homeostasis were enriched among DE genes, highlighting the importance of metal homeostasis in adaptation to excess Zn by P. x canadensis clone I-214. We identified the up-regulation of two Populus metal transporters (ZIP2 and NRAMP1) probably involved in metal uptake, and the down-regulation of a NAS4 gene involved in metal translocation. We identified also four Fe-homeostasis transcription factors (two bHLH38 genes, FIT and BTS) that were differentially expressed, probably for reducing Zn-induced Fe-deficiency. In particular, we suggest that the down-regulation of FIT transcription factor could be a mechanism to cope with Zn-induced Fe-deficiency in Populus. These results provide insight into the molecular mechanisms involved in adaption to excess Zn in Populus spp., but could also constitute a starting point for the identification and characterization of molecular markers or biotechnological targets for possible improvement of phytoremediation performances of poplar trees.
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Affiliation(s)
- Andrea Ariani
- BioLabs-Institute of Life Sciences, Scuola Superiore Sant'Anna, I-56127 Pisa, Italy
| | - Daniela Di Baccio
- BioLabs-Institute of Life Sciences, Scuola Superiore Sant'Anna, I-56127 Pisa, Italy
| | - Stefania Romeo
- BioLabs-Institute of Life Sciences, Scuola Superiore Sant'Anna, I-56127 Pisa, Italy
| | - Lara Lombardi
- Department of Biology, Università degli Studi di Pisa, I-56126 Pisa, Italy
| | - Andrea Andreucci
- Department of Biology, Università degli Studi di Pisa, I-56126 Pisa, Italy
| | - Alexander Lux
- Department of Plant Physiology, Faculty of Natural Science, Comenius University in Bratislava, Bratislava, Slovakia
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | | | - Luca Sebastiani
- BioLabs-Institute of Life Sciences, Scuola Superiore Sant'Anna, I-56127 Pisa, Italy
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Castagna A, Di Baccio D, Ranieri AM, Sebastiani L, Tognetti R. Effects of combined ozone and cadmium stresses on leaf traits in two poplar clones. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:2064-2075. [PMID: 25167820 DOI: 10.1007/s11356-014-3481-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 08/18/2014] [Indexed: 06/03/2023]
Abstract
Information on plant responses to combined stresses such as ozone (O3) and cadmium (Cd) is scarce in tree species. On the other hand, high O3 concentrations in the atmosphere and heavy metal contaminations in water and soil simultaneously affect forest ecosystems. Toxic metals may exacerbate the consequences of air pollutants. In this research, two poplar clones, differently sensitive to O3 ("I-214" O3-tolerant and "Eridano" O3-sensitive), were grown for 5 weeks in pots supplied with 0 and 150 mg Cd kg(-1) soil and then exposed to a 15-day O3 fumigation (60 nl l(-1), 5 h a day) or supplied with charcoal-filtered air under the same conditions (referred to as control samples). The effects of the two stressors, alone or in combination, on Cd accumulation, photosynthetic capacity, ethylene emission and oxidative state were investigated in fully expanded leaves. Cadmium accumulation in leaves caused a reduction, but not complete failure, of photosynthesis in Eridano and I-214 poplar clones. The reduction in assimilation rate was more important following O3 fumigation. Stomatal aperture after O3 treatment, instead, increased in I-214 and decreased in Eridano. Overall, Cd treatment was effective in decreasing ethylene emission, whereas O3 fumigation increased it in both clones, although interacting with the metal treatment. Again, O3 fumigation induced a significant increase in ascorbate (ASA) + dehydroascorbate (DHA) content, which was strongly oxidised by O3, thus decreasing the redox state. On the other hand, Cd treatment had a positive effect on ASA content and redox state in I-214, but not in Eridano. Although Cd and O3 are known to share some common toxicity pathways, the combined effects induced distinct clone-specific responses, underlying the complexity of plant reactions to multiple stresses.
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Affiliation(s)
- Antonella Castagna
- Dipartimento di Scienze Agrarie, Alimentari e Agro-Ambientali, Università di Pisa, Via del Borghetto 80, 56124, Pisa, Italy,
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Shi WG, Li H, Liu TX, Polle A, Peng CH, Luo ZB. Exogenous abscisic acid alleviates zinc uptake and accumulation in Populus × canescens exposed to excess zinc. PLANT, CELL & ENVIRONMENT 2015; 38:207-23. [PMID: 25158610 DOI: 10.1111/pce.12434] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 08/15/2014] [Accepted: 08/19/2014] [Indexed: 05/18/2023]
Abstract
A greenhouse experiment was conducted to study whether exogenous abscisic acid (ABA) mediates the responses of poplars to excess zinc (Zn). Populus × canescens seedlings were treated with either basal or excess Zn levels and either 0 or 10 μm ABA. Excess Zn led to reduced photosynthetic rates, increased Zn accumulation, induced foliar ABA and salicylic acid (SA), decreased foliar gibberellin (GA3 ) and auxin (IAA), elevated root H2 O2 levels, and increased root ratios of glutathione (GSH) to GSSG and foliar ratios of ascorbate (ASC) to dehydroascorbate (DHA) in poplars. While exogenous ABA decreased foliar Zn concentrations with 7 d treatments, it increased levels of endogenous ABA, GA3 and SA in roots, and resulted in highly increased foliar ASC accumulation and ratios of ASC to DHA. The transcript levels of several genes involved in Zn uptake and detoxification, such as yellow stripe-like family protein 2 (YSL2) and plant cadmium resistance protein 2 (PCR2), were enhanced in poplar roots by excess Zn but repressed by exogenous ABA application. These results suggest that exogenous ABA can decrease Zn concentrations in P. × canescens under excess Zn for 7 d, likely by modulating the transcript levels of key genes involved in Zn uptake and detoxification.
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Affiliation(s)
- Wen-Guang Shi
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
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28
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Romeo S, Trupiano D, Ariani A, Renzone G, Scippa GS, Scaloni A, Sebastiani L. Proteomic analysis of Populus × euramericana (clone I-214) roots to identify key factors involved in zinc stress response. JOURNAL OF PLANT PHYSIOLOGY 2014; 171:1054-63. [PMID: 24974332 DOI: 10.1016/j.jplph.2014.03.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 03/20/2014] [Accepted: 03/23/2014] [Indexed: 05/12/2023]
Abstract
Contamination of soil and water by heavy metals has become a widespread problem; environmental pollution by high zinc (Zn) concentration occurs frequently. Although poplar (Populus spp.) has been identified as suitable for phytoremediation approaches, its response to high Zn concentrations are still not clearly understood. For this reason, we investigated the effects of Zn in Populus×euramericana clone I-214 roots by proteomic analysis. Comparative experiments were conducted on rooted woody cuttings grown in nutrient solutions containing 1mM (treatment) or 1μM (control) Zn concentrations. A gel-based proteomic approach coupled with morphological and chemical analysis was used to identify differentially represented proteins in treated roots and to investigate the effect of Zn treatment on the poplar root system. Data shows that Zn was accumulated preferentially in roots, that the antioxidant system, the carbohydrate/energy and amino acid metabolisms were the main pathways modulated by Zn excess, and that mitochondria and vacuoles were the cellular organelles predominately affected by Zn stress. A coordination between cell death and proliferation/growth seems to occur under this condition to counteract the Zn-induced damage.
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Affiliation(s)
- Stefania Romeo
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, 56127 Pisa, Italy
| | - Dalila Trupiano
- Dipartimento di Bioscienze e Territorio, University of Molise, 86090 Pesche, IS, Italy
| | - Andrea Ariani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, 56127 Pisa, Italy
| | - Giovanni Renzone
- Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Napoli, Italy
| | - Gabriella S Scippa
- Dipartimento di Bioscienze e Territorio, University of Molise, 86090 Pesche, IS, Italy
| | - Andrea Scaloni
- Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Napoli, Italy
| | - Luca Sebastiani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.
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30
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Konlechner C, Türktaş M, Langer I, Vaculík M, Wenzel WW, Puschenreiter M, Hauser MT. Expression of zinc and cadmium responsive genes in leaves of willow (Salix caprea L.) genotypes with different accumulation characteristics. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2013; 178:121-7. [PMID: 23562959 PMCID: PMC3675671 DOI: 10.1016/j.envpol.2013.02.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 02/21/2013] [Accepted: 02/27/2013] [Indexed: 05/24/2023]
Abstract
Salix caprea is well suited for phytoextraction strategies. In a previous survey we showed that genetically distinct S. caprea plants isolated from metal-polluted and unpolluted sites differed in their zinc (Zn) and cadmium (Cd) tolerance and accumulation abilities. To determine the molecular basis of this difference we examined putative homologues of genes involved in heavy metal responses and identified over 200 new candidates with a suppression subtractive hybridization (SSH) screen. Quantitative expression analyses of 20 genes in leaves revealed that some metallothioneins and cell wall modifying genes were induced irrespective of the genotype's origin and metal uptake capacity while a cysteine biosynthesis gene was expressed constitutively higher in the metallicolous genotype. The third and largest group of genes was only induced in the metallicolous genotype. These data demonstrate that naturally adapted woody non-model species can help to discover potential novel molecular mechanisms for metal accumulation and tolerance.
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Affiliation(s)
- Cornelia Konlechner
- Department of Applied Genetics and Cell Biology, BOKU – University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Mine Türktaş
- Department of Applied Genetics and Cell Biology, BOKU – University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Ingrid Langer
- Department of Forest & Soil Sciences, BOKU – University of Natural Resources and Life Sciences, Konrad Lorenz Straße 24, A-3430 Tulln, Austria
| | - Marek Vaculík
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina B2, SK-842 15 Bratislava, Slovakia
| | - Walter W. Wenzel
- Department of Forest & Soil Sciences, BOKU – University of Natural Resources and Life Sciences, Konrad Lorenz Straße 24, A-3430 Tulln, Austria
| | - Markus Puschenreiter
- Department of Forest & Soil Sciences, BOKU – University of Natural Resources and Life Sciences, Konrad Lorenz Straße 24, A-3430 Tulln, Austria
| | - Marie-Theres Hauser
- Department of Applied Genetics and Cell Biology, BOKU – University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
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He J, Li H, Luo J, Ma C, Li S, Qu L, Gai Y, Jiang X, Janz D, Polle A, Tyree M, Luo ZB. A transcriptomic network underlies microstructural and physiological responses to cadmium in Populus x canescens. PLANT PHYSIOLOGY 2013; 162:424-39. [PMID: 23530184 PMCID: PMC3641221 DOI: 10.1104/pp.113.215681] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 03/22/2013] [Indexed: 05/18/2023]
Abstract
Bark tissue of Populus × canescens can hyperaccumulate cadmium, but microstructural, transcriptomic, and physiological response mechanisms are poorly understood. Histochemical assays, transmission electron microscopic observations, energy-dispersive x-ray microanalysis, and transcriptomic and physiological analyses have been performed to enhance our understanding of cadmium accumulation and detoxification in P. × canescens. Cadmium was allocated to the phloem of the bark, and subcellular cadmium compartmentalization occurred mainly in vacuoles of phloem cells. Transcripts involved in microstructural alteration, changes in nutrition and primary metabolism, and stimulation of stress responses showed significantly differential expression in the bark of P. × canescens exposed to cadmium. About 48% of the differentially regulated transcripts formed a coregulation network in which 43 hub genes played a central role both in cross talk among distinct biological processes and in coordinating the transcriptomic regulation in the bark of P. × canescens in response to cadmium. The cadmium transcriptome in the bark of P. × canescens was mirrored by physiological readouts. Cadmium accumulation led to decreased total nitrogen, phosphorus, and calcium and increased sulfur in the bark. Cadmium inhibited photosynthesis, resulting in decreased carbohydrate levels. Cadmium induced oxidative stress and antioxidants, including free proline, soluble phenolics, ascorbate, and thiol compounds. These results suggest that orchestrated microstructural, transcriptomic, and physiological regulation may sustain cadmium hyperaccumulation in P. × canescens bark and provide new insights into engineering woody plants for phytoremediation.
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Affiliation(s)
| | | | - Jie Luo
- College of Life Sciences and State Key Laboratory of Crop Stress Biology in Arid Areas (J.H., J.L., C.M., S.L., Z.-B.L.), Key Laboratory of Applied Entomology, College of Plant Protection (H.L.), and Key Laboratory of Environment and Ecology in Western China, Ministry of Education, College of Forestry (M.T., Z.-B.L.), Northwest A&F University, Yangling, Shaanxi 712100, China
- National Engineering Laboratory of Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China (L.Q., Y.G., X.J.); and
- Büsgen Institute, Department of Forest Botany and Tree Physiology, Georg-August University, 37077 Göttingen, Germany (D.J., A.P.)
| | - Chaofeng Ma
- College of Life Sciences and State Key Laboratory of Crop Stress Biology in Arid Areas (J.H., J.L., C.M., S.L., Z.-B.L.), Key Laboratory of Applied Entomology, College of Plant Protection (H.L.), and Key Laboratory of Environment and Ecology in Western China, Ministry of Education, College of Forestry (M.T., Z.-B.L.), Northwest A&F University, Yangling, Shaanxi 712100, China
- National Engineering Laboratory of Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China (L.Q., Y.G., X.J.); and
- Büsgen Institute, Department of Forest Botany and Tree Physiology, Georg-August University, 37077 Göttingen, Germany (D.J., A.P.)
| | - Shaojun Li
- College of Life Sciences and State Key Laboratory of Crop Stress Biology in Arid Areas (J.H., J.L., C.M., S.L., Z.-B.L.), Key Laboratory of Applied Entomology, College of Plant Protection (H.L.), and Key Laboratory of Environment and Ecology in Western China, Ministry of Education, College of Forestry (M.T., Z.-B.L.), Northwest A&F University, Yangling, Shaanxi 712100, China
- National Engineering Laboratory of Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China (L.Q., Y.G., X.J.); and
- Büsgen Institute, Department of Forest Botany and Tree Physiology, Georg-August University, 37077 Göttingen, Germany (D.J., A.P.)
| | - Long Qu
- College of Life Sciences and State Key Laboratory of Crop Stress Biology in Arid Areas (J.H., J.L., C.M., S.L., Z.-B.L.), Key Laboratory of Applied Entomology, College of Plant Protection (H.L.), and Key Laboratory of Environment and Ecology in Western China, Ministry of Education, College of Forestry (M.T., Z.-B.L.), Northwest A&F University, Yangling, Shaanxi 712100, China
- National Engineering Laboratory of Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China (L.Q., Y.G., X.J.); and
- Büsgen Institute, Department of Forest Botany and Tree Physiology, Georg-August University, 37077 Göttingen, Germany (D.J., A.P.)
| | - Ying Gai
- College of Life Sciences and State Key Laboratory of Crop Stress Biology in Arid Areas (J.H., J.L., C.M., S.L., Z.-B.L.), Key Laboratory of Applied Entomology, College of Plant Protection (H.L.), and Key Laboratory of Environment and Ecology in Western China, Ministry of Education, College of Forestry (M.T., Z.-B.L.), Northwest A&F University, Yangling, Shaanxi 712100, China
- National Engineering Laboratory of Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China (L.Q., Y.G., X.J.); and
- Büsgen Institute, Department of Forest Botany and Tree Physiology, Georg-August University, 37077 Göttingen, Germany (D.J., A.P.)
| | - Xiangning Jiang
- College of Life Sciences and State Key Laboratory of Crop Stress Biology in Arid Areas (J.H., J.L., C.M., S.L., Z.-B.L.), Key Laboratory of Applied Entomology, College of Plant Protection (H.L.), and Key Laboratory of Environment and Ecology in Western China, Ministry of Education, College of Forestry (M.T., Z.-B.L.), Northwest A&F University, Yangling, Shaanxi 712100, China
- National Engineering Laboratory of Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China (L.Q., Y.G., X.J.); and
- Büsgen Institute, Department of Forest Botany and Tree Physiology, Georg-August University, 37077 Göttingen, Germany (D.J., A.P.)
| | - Dennis Janz
- College of Life Sciences and State Key Laboratory of Crop Stress Biology in Arid Areas (J.H., J.L., C.M., S.L., Z.-B.L.), Key Laboratory of Applied Entomology, College of Plant Protection (H.L.), and Key Laboratory of Environment and Ecology in Western China, Ministry of Education, College of Forestry (M.T., Z.-B.L.), Northwest A&F University, Yangling, Shaanxi 712100, China
- National Engineering Laboratory of Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China (L.Q., Y.G., X.J.); and
- Büsgen Institute, Department of Forest Botany and Tree Physiology, Georg-August University, 37077 Göttingen, Germany (D.J., A.P.)
| | - Andrea Polle
- College of Life Sciences and State Key Laboratory of Crop Stress Biology in Arid Areas (J.H., J.L., C.M., S.L., Z.-B.L.), Key Laboratory of Applied Entomology, College of Plant Protection (H.L.), and Key Laboratory of Environment and Ecology in Western China, Ministry of Education, College of Forestry (M.T., Z.-B.L.), Northwest A&F University, Yangling, Shaanxi 712100, China
- National Engineering Laboratory of Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China (L.Q., Y.G., X.J.); and
- Büsgen Institute, Department of Forest Botany and Tree Physiology, Georg-August University, 37077 Göttingen, Germany (D.J., A.P.)
| | - Melvin Tyree
- College of Life Sciences and State Key Laboratory of Crop Stress Biology in Arid Areas (J.H., J.L., C.M., S.L., Z.-B.L.), Key Laboratory of Applied Entomology, College of Plant Protection (H.L.), and Key Laboratory of Environment and Ecology in Western China, Ministry of Education, College of Forestry (M.T., Z.-B.L.), Northwest A&F University, Yangling, Shaanxi 712100, China
- National Engineering Laboratory of Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China (L.Q., Y.G., X.J.); and
- Büsgen Institute, Department of Forest Botany and Tree Physiology, Georg-August University, 37077 Göttingen, Germany (D.J., A.P.)
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Jiang H, Korpelainen H, Li C. Populus yunnanensis males adopt more efficient protective strategies than females to cope with excess zinc and acid rain. CHEMOSPHERE 2013; 91:1213-20. [PMID: 23415309 DOI: 10.1016/j.chemosphere.2013.01.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 12/17/2012] [Accepted: 01/02/2013] [Indexed: 05/09/2023]
Abstract
Dioecious plants show sexually different responses to environmental stresses. However, little is known about the dimorphic morphological and physiological responses to soil pollution. To investigate sex-related adaptive responses of Populus yunnanensis seedlings when exposed to excess zinc (Zn), acid rain (AR) and their combination (Zn+AR), we analyzed growth parameters, Zn accumulation and allocation, photosynthetic capacity and biochemical responses under different treatments. Results revealed that both excess Zn and Zn+AR have a negative effect on plant growth. Males have a greater potential than females to enrich Zn. The photosynthesis limitation could be attributable to a lower stomatal conductance, photosynthetic nitrogen use efficiency and nitrate reductase activity induced by Zn accumulation. Overproduction of reactive oxygen species was detected, and females showed higher levels of H2O2 and O2- than did males under excess Zn and Zn+AR. In addition, indicators related to plant injury showed expected increases and exhibited sexual differences. Males synthesized more biochemical molecules, such as proline and non-protein thiol, showing a stronger defense capacity in responses to either excess Zn or Zn+AR. Taking into account the Zn accumulation and the resulting injuries in plants, we suggest that excess Zn causes sex-related adaptive responses and males possess a more effective self-protection mechanism, Zn-stressed individuals suffering from AR did not show notable aggravation or alleviation when compared to damages induced by excess Zn alone.
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Affiliation(s)
- Hao Jiang
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
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Tognetti R, Cocozza C, Marchetti M. Shaping the multifunctional tree: the use of Salicaceae in environmental restoration. IFOREST - BIOGEOSCIENCES AND FORESTRY 2013. [PMID: 0 DOI: 10.3832/ifor0920-006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
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Tognetti R, Massacci A, Mugnozza GS. Fifth International Poplar Symposium: 'Poplars and willows: from research models to multipurpose trees for a bio-based society'. TREE PHYSIOLOGY 2011; 31:1289-1292. [PMID: 22158009 DOI: 10.1093/treephys/tpr117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Carefully managed tree plantations offer an opportunity for sustainable biomass production. In recent years, the responses of the Salicaceae to environmental constraints have increasingly been investigated at different levels of biological integration, giving rise to a physiological approach to the function of trees in environmental restoration and monitoring. Significant progress has been achieved by the poplar and willow community in understanding targeted characteristics of complex tree stress responses. The Fifth International Poplar Symposium brought together experts in this area, with the main objective being to improve, coordinate and communicate existing national research on the biological and environmental dimension of multifunctional poplar and willow plantations. The secondary objective was to develop a network of research scientists and extension workers to provide scientific support for subjects interested in using fast-growing poplar and willow species for tree-related environmental projects. The ultimate goal was to build up services for the multipurpose tree plantation network on local-level management in order to obtain maximized benefits from tree crops. The purpose was also to maximize the synergy between local knowledge and global-level processes that require information on multipurpose tree crop production.
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