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Müller B. Iron transport mechanisms and their evolution focusing on chloroplasts. JOURNAL OF PLANT PHYSIOLOGY 2023; 288:154059. [PMID: 37586271 DOI: 10.1016/j.jplph.2023.154059] [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: 01/23/2023] [Revised: 07/26/2023] [Accepted: 07/28/2023] [Indexed: 08/18/2023]
Abstract
Iron (Fe) is an essential element for photosynthetic organisms, required for several vital biological functions. Photosynthesis, which takes place in the chloroplasts of higher plants, is the major Fe consumer. Although the components of the root Fe uptake system in dicotyledonous and monocotyledonous plants have been extensively studied, the Fe transport mechanisms of chloroplasts in these two groups of plants have received little attention. This review focuses on the comparative analysis of Fe transport processes in the evolutionary ancestors of chloroplasts (cyanobacteria) with the processes in embryophytes and green algae (Viridiplantae). The aim is to summarize how chloroplasts are integrated into cellular Fe homeostasis and how Fe transporters and Fe transport mechanisms have been modified by evolution.
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Affiliation(s)
- Brigitta Müller
- Department of Plant Physiology and Molecular Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary.
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Abdelsalam IM, Ghosh S, AlKafaas SS, Bedair H, Malloum A, ElKafas SS, Saad-Allah KM. Nanotechnology as a tool for abiotic stress mitigation in horticultural crops. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01251-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Jogawat A, Yadav B, Narayan OP. Metal transporters in organelles and their roles in heavy metal transportation and sequestration mechanisms in plants. PHYSIOLOGIA PLANTARUM 2021; 173:259-275. [PMID: 33586164 DOI: 10.1111/ppl.13370] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 01/23/2021] [Accepted: 02/11/2021] [Indexed: 05/19/2023]
Abstract
Heavy metal toxicity is one of the major concerns for agriculture and health. Accumulation of toxic heavy metals at high concentrations in edible parts of crop plants is the primary cause of disease in humans and cattle. A dramatic increase in industrialization, urbanization, and other high anthropogenic activities has led to the accumulation of heavy metals in agricultural soil, which has consequently disrupted soil conditions and affected crop yield. By now, plants have developed several mechanisms to cope with heavy metal stress. However, not all plants are equally effective in dealing with the toxicity of high heavy metal concentrations. Plants have modified their anatomy, morphophysiology, and molecular networks to survive under changing environmental conditions. Heavy metal sequestration is one of the essential processes evolved by some plants to deal with heavy metals' toxic concentration. Some plants even have the ability to accumulate metals in high quantities in the shoots/organelles without toxic effects. For intercellular and interorganeller metal transport, plants harbor spatially distributed various transporters which mainly help in uptake, translocation, and redistribution of metals. This review discusses different heavy metal transporters in different organelles and their roles in metal sequestration and redistribution to help plants cope with heavy metal stress. A good understanding of the processes at stake helps in developing more tolerant crops without affecting their productivity.
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Affiliation(s)
| | - Bindu Yadav
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
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Tong H, Madison I, Long TA, Williams CM. Computational solutions for modeling and controlling plant response to abiotic stresses: a review with focus on iron deficiency. CURRENT OPINION IN PLANT BIOLOGY 2020; 57:8-15. [PMID: 32619968 DOI: 10.1016/j.pbi.2020.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/15/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Computational solutions enable plant scientists to model protein-mediated stress responses and characterize novel gene functions that coordinate responses to a variety of abiotic stress conditions. Recently, density functional theory was used to study proteins active sites and elucidate enzyme conversion mechanisms involved in iron deficiency responsive signaling pathways. Computational approaches for protein homology modeling and the kinetic modeling of signaling pathways have also resolved the identity and function in proteins involved in iron deficiency signaling pathways. Significant changes in gene relationships under other stress conditions, such as heat or drought stress, have been recently identified using differential network analysis, suggesting that stress tolerance is achieved through asynchronous control. Moreover, the increasing development and use of statistical modeling and systematic modeling of transcriptomic data have provided significant insight into the gene regulatory mechanisms associated with abiotic stress responses. These types of in silico approaches have facilitated the plant science community's future goals of developing multi-scale models of responses to iron deficiency stress and other abiotic stress conditions.
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Affiliation(s)
- Haonan Tong
- Electrical and Computer Engineering, North Carolina State University, Raleigh, USA
| | - Imani Madison
- Plant and Microbial Biology, North Carolina State University, Raleigh, USA
| | - Terri A Long
- Plant and Microbial Biology, North Carolina State University, Raleigh, USA.
| | - Cranos M Williams
- Electrical and Computer Engineering, North Carolina State University, Raleigh, USA.
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Pham HD, Pólya S, Müller B, Szenthe K, Sági-Kazár M, Bánkúti B, Bánáti F, Sárvári É, Fodor F, Tamás L, Philippar K, Solti Á. The developmental and iron nutritional pattern of PIC1 and NiCo does not support their interdependent and exclusive collaboration in chloroplast iron transport in Brassica napus. PLANTA 2020; 251:96. [PMID: 32297017 PMCID: PMC7214486 DOI: 10.1007/s00425-020-03388-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 04/04/2020] [Indexed: 05/05/2023]
Abstract
The accumulation of NiCo following the termination of the accumulation of iron in chloroplast suggests that NiCo is not solely involved in iron uptake processes of chloroplasts. Chloroplast iron (Fe) uptake is thought to be operated by a complex containing permease in chloroplast 1 (PIC1) and nickel-cobalt transporter (NiCo) proteins, whereas the role of other Fe homeostasis-related transporters such as multiple antibiotic resistance protein 1 (MAR1) is less characterized. Although pieces of information exist on the regulation of chloroplast Fe uptake, including the effect of plant Fe homeostasis, the whole system has not been revealed in detail yet. Thus, we aimed to follow leaf development-scale changes in the chloroplast Fe uptake components PIC1, NiCo and MAR1 under deficient, optimal and supraoptimal Fe nutrition using Brassica napus as model. Fe deficiency decreased both the photosynthetic activity and the Fe content of plastids. Supraoptimal Fe nutrition caused neither Fe accumulation in chloroplasts nor any toxic effects, thus only fully saturated the need for Fe in the leaves. In parallel with the increasing Fe supply of plants and ageing of the leaves, the expression of BnPIC1 was tendentiously repressed. Though transcript and protein amount of BnNiCo tendentiously increased during leaf development, it was even markedly upregulated in ageing leaves. The relative transcript amount of BnMAR1 increased mainly in ageing leaves facing Fe deficiency. Taken together chloroplast physiology, Fe content and transcript amount data, the exclusive participation of NiCo in the chloroplast Fe uptake is not supported. Saturation of the Fe requirement of chloroplasts seems to be linked to the delay of decomposing the photosynthetic apparatus and keeping chloroplast Fe homeostasis in a rather constant status together with a supressed Fe uptake machinery.
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Affiliation(s)
- Hong Diep Pham
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Sára Pólya
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Brigitta Müller
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Kálmán Szenthe
- RT-Europe Nonprofit Research Ltd., Mosonmagyaróvár, Hungary
| | - Máté Sági-Kazár
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | | | - Ferenc Bánáti
- RT-Europe Nonprofit Research Ltd., Mosonmagyaróvár, Hungary
| | - Éva Sárvári
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Ferenc Fodor
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - László Tamás
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Katrin Philippar
- Center for Human - and Molecular Biology, Plant Biology, Saarland University, Saarbrücken, Germany
| | - Ádám Solti
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary.
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