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Nicolas-Espinosa J, Yepes-Molina L, Martinez-Bernal F, Fernandez-Pozurama M, Carvajal M. Deciphering the effect of salinity and boron stress on broccoli plants reveals that membranes phytosterols and PIP aquaporins facilitate stress adaptation. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 338:111923. [PMID: 37972760 DOI: 10.1016/j.plantsci.2023.111923] [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: 08/10/2023] [Revised: 10/05/2023] [Accepted: 11/08/2023] [Indexed: 11/19/2023]
Abstract
Abiotic stresses, such as salinity and boron toxicity/deficiency, are prevalent in arid and semi-arid regions where broccoli is largely cultivated. This study aimed to investigate the physiological response of broccoli leaves to these stresses, focusing on parameters such as growth, relative water content, stomatal conductance, and mineral concentration after 15 days of treatment application. The effects of individual and combined stresses of salinity and boron (deficiency and toxicity) were examined. Additionally, the study explored the molecular aspects of PIP aquaporins in relation to their presence in the plasma membrane and their interaction with the lipid environment. The results showed that the combined stress of salinity and boron deficiency resulted in a significant reduction in plant biomass, suggesting a specific adaptation to this stress combination. Changes in stomatal conductance and mineral nutrient levels indicated that the adaptation mechanisms were associated with water and boron concentration in the leaves. The expression patterns of PIP aquaporins varied among the different stress treatments, either individually or in combination. Furthermore, the presence of aquaporins in the plasma membrane and microsomal fraction highlighted the potential regulatory roles of trafficking along with the membrane composition, particularly the concentration of phytosterols. The results underscore the importance of water transport by aquaporins and their interaction with the sterol composition in the membranes, in facilitating salinity-boron stress adaptation mechanisms.
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Affiliation(s)
- Juan Nicolas-Espinosa
- Aquaporins Group. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Edificio 25, 30100 Murcia, Spain
| | - Lucia Yepes-Molina
- Aquaporins Group. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Edificio 25, 30100 Murcia, Spain
| | - Fuensanta Martinez-Bernal
- Aquaporins Group. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Edificio 25, 30100 Murcia, Spain
| | - Miriam Fernandez-Pozurama
- Aquaporins Group. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Edificio 25, 30100 Murcia, Spain
| | - Micaela Carvajal
- Aquaporins Group. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Edificio 25, 30100 Murcia, Spain.
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2
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Lopez-Zaplana A, Nicolas-Espinosa J, Albaladejo-Marico L, Carvajal M. Exploring the mechanism of blindness physiopathy in Brassica oleracea var italica L. by comprehensive transcriptomics and metabolomics analysis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 206:108304. [PMID: 38159550 DOI: 10.1016/j.plaphy.2023.108304] [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: 06/02/2023] [Revised: 11/27/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
Blindness is a physiopathy characterized by apical abortion that particularly affects the Brassica family. The occurrence of blindness has been related to exposure to low temperatures during early developmental stages. However, the causes of this selective sensitivity and how they affect the correct development remain unknown. In this study, we investigated the mechanisms involved in the occurrence of blindness in broccoli plants. The analysis of RNAseq, focused on membrane transporters and the synthesis pathways of glucosinolates and phenolics, was related with physiological changes in nutrient and water uptake, gas exchange, and metabolism. Comparative gene expression analysis between control and blindness-affected broccoli plants revealed distinct regulation patterns in roots and shoots, leading to reduced synthesis of glucosinolates and phenolics. Additionally, the expression levels of aquaporins and potassium transporters were found to be associated with mineral and water transport. In this way, our results revealed the causes of blindness by identifying differentially expressed genes, highlighting those related to secondary metabolism, as well as genes involved in water and nutrient uptake and transport as the crucial involved in the physiopathy appearance.
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Affiliation(s)
- Alvaro Lopez-Zaplana
- Aquaporins Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada Del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Edificio 25, 30100 Murcia, Spain
| | - Juan Nicolas-Espinosa
- Aquaporins Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada Del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Edificio 25, 30100 Murcia, Spain
| | - Lorena Albaladejo-Marico
- Aquaporins Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada Del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Edificio 25, 30100 Murcia, Spain
| | - Micaela Carvajal
- Aquaporins Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada Del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Edificio 25, 30100 Murcia, Spain.
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3
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Martínez-Mazón P, Bahamonde C, Herrera-Rodríguez MB, Fernández-Ocaña AM, Rexach J, González-Fontes A, Camacho-Cristóbal JJ. Role of ABA in the adaptive response of Arabidopsis plants to long-term boron toxicity treatment. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 202:107965. [PMID: 37591031 DOI: 10.1016/j.plaphy.2023.107965] [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: 04/30/2023] [Revised: 07/25/2023] [Accepted: 08/12/2023] [Indexed: 08/19/2023]
Abstract
Boron (B) toxicity causes impairments in several plant metabolic and physiological processes. Under conditions of excessive B availability, this micronutrient is passively transported through the transpiration stream and accumulates in leaves, causing the development of necrotic regions in leaf tips. Some plants have developed adaptive mechanisms to minimize the toxic effects of excessive B accumulation in their tissues. Thus, for instance, in Arabidopsis it has been described an ABA-dependent decrease in the transpiration rate that would restrict B accumulation in aerial plant tissues in response to short-term B toxicity, this effect being mediated by AtNCED3 (which encodes a key enzyme for ABA biosynthesis). The present work aimed to study the possible involvement of ABA in the adjustment of plant water balance and B homeostasis during the adaptive response of Arabidopsis to prolonged B toxicity. For this purpose, Arabidopsis wild-type and the ABA-deficient nced3-2 mutant plants were subjected to B toxicity for 7 days. We show that ABA-dependent stomatal closure is determinant for the adjustment of plant water relations under conditions of prolonged B toxicity. Results suggest that, in addition to the AtNCED3 gene, the AtNCED5 gene could also be involved in this ABA-dependent stomatal closure. Finally, our results also indicate the possible role of endogenous root ABA content in the mechanism of active efflux of B via BOR4 (efflux-type B transporter) from the root to the external environment under excess B conditions.
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Affiliation(s)
- Paula Martínez-Mazón
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, E-41013, Sevilla, Spain.
| | - Cristina Bahamonde
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, E-41013, Sevilla, Spain.
| | - M Begoña Herrera-Rodríguez
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, E-41013, Sevilla, Spain.
| | - Ana María Fernández-Ocaña
- Departamento de Biología Animal, Biología Vegetal y Ecología, Facultad de Ciencias Experimentales, Campus de Las Lagunillas s/n, Universidad de Jaén UJA, 23071, Jaén, Spain.
| | - Jesús Rexach
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, E-41013, Sevilla, Spain.
| | - Agustín González-Fontes
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, E-41013, Sevilla, Spain.
| | - Juan J Camacho-Cristóbal
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, E-41013, Sevilla, Spain.
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Boursiac Y, Pradal C, Bauget F, Lucas M, Delivorias S, Godin C, Maurel C. Phenotyping and modeling of root hydraulic architecture reveal critical determinants of axial water transport. PLANT PHYSIOLOGY 2022; 190:1289-1306. [PMID: 35708646 PMCID: PMC9516777 DOI: 10.1093/plphys/kiac281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 05/15/2022] [Indexed: 05/26/2023]
Abstract
Water uptake by roots is a key adaptation of plants to aerial life. Water uptake depends on root system architecture (RSA) and tissue hydraulic properties that, together, shape the root hydraulic architecture. This work investigates how the interplay between conductivities along radial (e.g. aquaporins) and axial (e.g. xylem vessels) pathways determines the water transport properties of highly branched RSAs as found in adult Arabidopsis (Arabidopsis thaliana) plants. A hydraulic model named HydroRoot was developed, based on multi-scale tree graph representations of RSAs. Root water flow was measured by the pressure chamber technique after successive cuts of a same root system from the tip toward the base. HydroRoot model inversion in corresponding RSAs allowed us to concomitantly determine radial and axial conductivities, providing evidence that the latter is often overestimated by classical evaluation based on the Hagen-Poiseuille law. Organizing principles of Arabidopsis primary and lateral root growth and branching were determined and used to apply the HydroRoot model to an extended set of simulated RSAs. Sensitivity analyses revealed that water transport can be co-limited by radial and axial conductances throughout the whole RSA. The number of roots that can be sectioned (intercepted) at a given distance from the base was defined as an accessible and informative indicator of RSA. The overall set of experimental and theoretical procedures was applied to plants mutated in ESKIMO1 and previously shown to have xylem collapse. This approach will be instrumental to dissect the root water transport phenotype of plants with intricate alterations in root growth or transport functions.
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Affiliation(s)
| | | | | | | | - Stathis Delivorias
- Institute for Plant Sciences of Montpellier (IPSiM), Univ Montpellier, CNRS, INRAE, Institut Agro, Montpellier 34060, France
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Behera B, Kancheti M, Raza MB, Shiv A, Mangal V, Rathod G, Altaf MA, Kumar A, Aftab T, Kumar R, Tiwari RK, Lal MK, Singh B. Mechanistic insight on boron-mediated toxicity in plant vis-a-vis its mitigation strategies: a review. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 25:9-26. [PMID: 35298319 DOI: 10.1080/15226514.2022.2049694] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Boron (B) is an essential micronutrient, crucial for the growth and development of crop plants. However, the essential to a toxic range of B in the plant is exceptionally narrow, and symptoms develop with a slight change in its concentration in soil. The morphological and anatomical response, such as leaf chlorosis, stunted growth, and impairment in the xylem and phloem development occurs under B-toxicity. The transport of B in the plant occurs via transpiration stream with the involvement of B-channels and transporter in the roots. The higher accumulation of B in source and sink tissue tends to have lower photosynthetic, chlorophyll content, infertility, failure of pollen tube formation and germination, impairment of cell wall formation, and disruption of membrane systems. Excess B in the plant hinders the uptake of other micronutrients, hormone transport, and metabolite partitioning. B-mediated reactive oxygen species production leads to the synthesis of antioxidant enzymes which help to scavenge these molecules and prevent the plant from further oxidative damage. This review highlights morpho-anatomical, physiological, biochemical, and molecular responses of the plant under B toxicity and thereby might help the researchers to understand the related mechanism and design strategies to develop B tolerant cultivars.
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Affiliation(s)
| | | | - Md Basit Raza
- ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Aalok Shiv
- ICAR-Indian Institute of Sugarcane Research, Lucknow, India
| | - Vikas Mangal
- ICAR-Central Potato Research Institute, Shimla, India
| | - Gajendra Rathod
- ICAR-Indian Agricultural Research Institute, New Delhi, India
| | | | | | - Tariq Aftab
- Department of Botany, Aligarh Muslim University, Aligarh, India
| | | | - Rahul Kumar Tiwari
- ICAR-Indian Agricultural Research Institute, New Delhi, India
- ICAR-Central Potato Research Institute, Shimla, India
| | - Milan Kumar Lal
- ICAR-Indian Agricultural Research Institute, New Delhi, India
- ICAR-Central Potato Research Institute, Shimla, India
| | - Brajesh Singh
- ICAR-Central Potato Research Institute, Shimla, India
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6
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Lan Y, Zhang K, He T, Wang H, Jiang C, Yan H, Xiang Y. Systematic analysis of the Serine/Arginine-Rich Protein Splicing Factors (SRs) and focus on salt tolerance of PtSC27 in Populus trichocarpa. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 173:97-109. [PMID: 35121529 DOI: 10.1016/j.plaphy.2022.01.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 01/09/2022] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
Serine/Arginine-Rich Protein Splicing Factors (SRs) are indispensable splicing factors, which play significant roles in spliceosome assembly, splicing regulation and regulation of plant stress. However, a comprehensive analysis and function research of SRs in the woody plant is still lacking. In this report, we conducted the identification and comprehensive analysis of the 71 SRs in poplar and three other dicots, including basic characterization, phylogenetic, conserved motifs, gene duplication, promoter and splice isoform of these genes. Based on the publicly available transcriptome data, expression pattern of SRs in poplar under low temperature, high temperature, drought and salt stress were further analyzed. Subsequently, a key candidate gene PtSC27 that responded to salt stress was screened. More importantly, overexpression of PtSC27 increased plant survival rate under salt stress, and enhanced salt tolerance by regulating malondialdehyde (MDA) content, peroxidase (POD) and catalase (CAT) enzyme activities in transgenic plants. Meanwhile, overexpression of PtSC27 made transgenic plants insensitive to exogenous ABA and improved the expression of some ABA signal-related genes under salt stress. Overall, our studies lay a foundation for understanding the structure and function of SRs in the poplar and provide useful gene resources for breeding through genetic engineering.
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Affiliation(s)
- Yangang Lan
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, 230036, China
| | - Kaimei Zhang
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, 230036, China
| | - Ting He
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, 230036, China
| | - Hao Wang
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, 230036, China
| | - Chengzhi Jiang
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, 230036, China
| | - Hanwei Yan
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, 230036, China.
| | - Yan Xiang
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, 230036, China.
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7
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Sharma SS, Kumar V, Dietz KJ. Emerging Trends in Metalloid-Dependent Signaling in Plants. TRENDS IN PLANT SCIENCE 2021; 26:452-471. [PMID: 33257259 DOI: 10.1016/j.tplants.2020.11.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 10/12/2020] [Accepted: 11/03/2020] [Indexed: 06/12/2023]
Abstract
Metalloids are semiconducting elements that constitute a small group in the periodic table of elements. Their occurrence in nature either poses an environmental threat or benefit to plants. The precise mechanisms or manner of crosstalk of metalloid interference and sensing remain open questions. Standard plant nutrient solutions contain the metalloid boron (B) as a micronutrient, while silicon (Si) is considered a beneficial element routinely supplied only to some plants such as grasses. By contrast, arsenic (As) is a severe environmental hazard to most organisms, including plants, while the less abundant metalloids germanium (Ge), antimony (Sb), and tellurium (Te) display variable degrees of toxicity. Here we review the molecular events and mechanisms that could explain the contrasting (or overlapping) action of metalloids on the cell and cell signaling.
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Affiliation(s)
- Shanti S Sharma
- Department of Botany, School of Life Sciences, Sikkim University, Gangtok 737102, Sikkim, India
| | - Vijay Kumar
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, Bielefeld, Germany; Department of Biosciences, Himachal Pradesh University, Shimla 171005, India
| | - Karl-Josef Dietz
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, Bielefeld, Germany.
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8
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Rios JJ, Lopez-Zaplana A, Bárzana G, Martinez-Alonso A, Carvajal M. Foliar Application of Boron Nanoencapsulated in Almond Trees Allows B Movement Within Tree and Implements Water Uptake and Transport Involving Aquaporins. FRONTIERS IN PLANT SCIENCE 2021; 12:752648. [PMID: 34868141 PMCID: PMC8636056 DOI: 10.3389/fpls.2021.752648] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/29/2021] [Indexed: 05/08/2023]
Abstract
Nanotechnology brings to agriculture new forms of fertilizer applications, which could be used to reduce environmental contamination and increase efficiency. In this study, foliar fertilization with nanoencapsulated boron (B) was studied in comparison to an ionic B (non-encapsulated) application in young B-deficient almond trees grown under a controlled environment. B movement within the plant in relation to the leaf gas exchange, water relations parameters, and root hydraulic conductance was measured. Also, the expression of aquaporins (AQPs) [plasma membrane intrinsic protein (PIP) and tonoplast intrinsic protein (TIP)] was studied in relation to water uptake and transport parameters to establish the effectiveness of the different B treatments. The obtained results were associated with a high concentration of observed B with nanoencapsulated B, provided by the higher permeability of carrier nanovesicles, which allowed B to reach the cell wall more efficiently. The increases in water uptake and transport obtained in these plants could be related to the role that this element played in the cell wall and the relationship that it could have in the regulation of the expression of AQPs and their involvement in water relations. Also, an increase in the expression of PIPs (mainly PIP2.2) to the applied nanoencapsulated B could be related to the need for B and water transport, and fine regulation of TIP1.1 in relation to B concentration in tissues provides an important feature in the remobilization of B within the cell.
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9
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Matthes MS, Robil JM, McSteen P. From element to development: the power of the essential micronutrient boron to shape morphological processes in plants. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:1681-1693. [PMID: 31985801 PMCID: PMC7067301 DOI: 10.1093/jxb/eraa042] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/25/2020] [Indexed: 05/27/2023]
Abstract
Deficiency of the essential nutrient boron (B) in the soil is one of the most widespread micronutrient deficiencies worldwide, leading to developmental defects in root and shoot tissues of plants, and severe yield reductions in many crops. Despite this agricultural importance, the underlying mechanisms of how B shapes plant developmental and morphological processes are still not unequivocally understood in detail. This review evaluates experimental approaches that address our current understanding of how B influences plant morphological processes by focusing on developmental defects observed under B deficiency. We assess what is known about mechanisms that control B homeostasis and specifically highlight: (i) limitations in the methodology that is used to induce B deficiency; (ii) differences between mutant phenotypes and normal plants grown under B deficiency; and (iii) recent research on analyzing interactions between B and phytohormones. Our analysis highlights the need for standardized methodology to evaluate the roles of B in the cell wall versus other parts of the cell.
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Affiliation(s)
- Michaela S Matthes
- Division of Biological Sciences, Bond Life Sciences Center, Interdisciplinary Plant Group, and Missouri Maize Center, University of Missouri, LSC, Columbia, MO, USA
| | - Janlo M Robil
- Division of Biological Sciences, Bond Life Sciences Center, Interdisciplinary Plant Group, and Missouri Maize Center, University of Missouri, LSC, Columbia, MO, USA
| | - Paula McSteen
- Division of Biological Sciences, Bond Life Sciences Center, Interdisciplinary Plant Group, and Missouri Maize Center, University of Missouri, LSC, Columbia, MO, USA
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10
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Landi M, Margaritopoulou T, Papadakis IE, Araniti F. Boron toxicity in higher plants: an update. PLANTA 2019; 250:1011-1032. [PMID: 31236697 DOI: 10.1007/s00425-019-03220-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 06/18/2019] [Indexed: 05/24/2023]
Abstract
In this review, emphasis is given to the most recent updates about morpho-anatomical, physiological, biochemical and molecular responses adopted by plants to cope with B excess. Boron (B) is a unique micronutrient for plants given that the range of B concentration from its essentiality to toxicity is extremely narrow, and also because it occurs as an uncharged molecule (boric acid) which can pass lipid bilayers without any degree of controls, as occurs for other ionic nutrients. Boron frequently exceeds the plant's requirement in arid and semiarid environments due to poor drainage, and in agricultural soils close to coastal areas due to the intrusion of B-rich seawater in fresh aquifer or because of dispersion of seawater aerosol. Global releases of elemental B through weathering, volcanic and geothermal processes are also relevant in enriching B concentration in some areas. Considerable progress has been made in understanding how plants react to B toxicity and relevant efforts have been made to investigate: (I) B uptake and in planta partitioning, (II) physiological, biochemical, and molecular changes induced by B excess, with particular emphasis to the effects on the photosynthetic process, the B-triggered oxidative stress and responses of the antioxidant apparatus to B toxicity, and finally (III) mechanisms of B tolerance. Recent findings addressing the effects of B toxicity are reviewed here, intending to clarify the effect of B excess and to propose new perspectives aimed at driving future researches on the topic.
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Affiliation(s)
- Marco Landi
- Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy
| | - Theoni Margaritopoulou
- Laboratory of Mycology, Department of Phytopathology, Benaki Phytopathological Institute, St. Delta 8, 14561, Kifisia, Greece
| | - Ioannis E Papadakis
- Laboratory of Pomology, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855, Athens, Greece.
| | - Fabrizio Araniti
- Dipartimento AGRARIA, Università Mediterranea di Reggio Calabria, Località Feo di Vito, SNC, 89124, Reggio Calabria, RC, Italy
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11
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Pandey A, Khan MK, Hakki EE, Gezgin S, Hamurcu M. Combined Boron Toxicity and Salinity Stress-An Insight into Its Interaction in Plants. PLANTS (BASEL, SWITZERLAND) 2019; 8:E364. [PMID: 31547605 PMCID: PMC6843824 DOI: 10.3390/plants8100364] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/1970] [Revised: 09/11/2019] [Accepted: 09/17/2019] [Indexed: 12/11/2022]
Abstract
The continuously changing environment has intensified the occurrence of abiotic stress conditions. Individually, boron (B) toxicity and salinity stress are well recognized as severe stress conditions for plants. However, their coexistence in arid and semi-arid agricultural regions has shown ambiguous effects on plant growth and development. Few studies have reported that combined boron toxicity and high salinity stress have more damaging effects on plant growth than individual B and salt stress, while other studies have highlighted less damaging effects of the combined stress. Hence, it is interesting to understand the positive interaction of this combined stress so that it can be effectively employed for the improvement of crops that generally show the negative effects of this combined stress. In this review, we discussed the possible processes that occur in plants in response to this combined stress condition. We highly suggest that the combined B and salinity stress condition should be considered as a novel stress condition by researchers; hence, we recommend the name "BorSal" for this combined boron toxicity and high salinity state in the soil. Membrane-bound activities, mobility of ions, water transport, pH changes, transpiration, photosynthesis, antioxidant activities, and different molecular transporters are involved in the effects of BorSal interaction in plants. The discussed mechanisms indicate that the BorSal stress state should be studied in light of the involved physiological and molecular processes that occur after B and salt interaction in plants.
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Affiliation(s)
- Anamika Pandey
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya 42079, Turkey.
| | - Mohd Kamran Khan
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya 42079, Turkey.
| | - Erdogan Esref Hakki
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya 42079, Turkey.
| | - Sait Gezgin
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya 42079, Turkey.
| | - Mehmet Hamurcu
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya 42079, Turkey.
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Macho-Rivero MA, Herrera-Rodríguez MB, Brejcha R, Schäffner AR, Tanaka N, Fujiwara T, González-Fontes A, Camacho-Cristóbal JJ. Boron Toxicity Reduces Water Transport from Root to Shoot in Arabidopsis Plants. Evidence for a Reduced Transpiration Rate and Expression of Major PIP Aquaporin Genes. PLANT & CELL PHYSIOLOGY 2018; 59:836-844. [PMID: 29415257 DOI: 10.1093/pcp/pcy026] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 01/26/2018] [Indexed: 05/24/2023]
Abstract
Toxic boron (B) concentrations cause impairments in several plant metabolic and physiological processes. Recently we reported that B toxicity led to a decrease in the transpiration rate of Arabidopsis plants in an ABA-dependent process within 24 h, which could indicate the occurrence of an adjustment of whole-plant water relations in response to this stress. Since plasma membrane intrinsic protein (PIP) aquaporins are key components influencing the water balance of plants because of their involvement in root water uptake and tissue hydraulic conductance, the aim of the present work was to study the effects of B toxicity on these important parameters affecting plant water status over a longer period of time. For this purpose, transpiration rate, water transport to the shoot and transcript levels of genes encoding four major PIP aquaporins were measured in Arabidopsis plants treated or not with a toxic B concentration. Our results indicate that, during the first 24 h of B toxicity, increased shoot ABA content would play a key role in reducing stomatal conductance, transpiration rate and, consequently, the water transport to the shoot. These physiological responses to B toxicity were maintained for up to 48 h of B toxicity despite shoot ABA content returning to control levels. In addition, B toxicity also caused the down-regulation of several genes encoding root and shoot aquaporins, which could reduce the cell to cell movement of water in plant tissues and, consequently, the water flux to shoot. All these changes in the water balance of plants under B toxicity could be a mechanism to prevent excess B accumulation in plant tissues.
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Affiliation(s)
- Miguel A Macho-Rivero
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, Sevilla 41013, Spain
| | - M Begoña Herrera-Rodríguez
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, Sevilla 41013, Spain
| | - Ramona Brejcha
- Institute of Groundwater Ecology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Anton R Schäffner
- Biochemical Plant Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Nobuhiro Tanaka
- Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, 113-8657 Japan
| | - Toru Fujiwara
- Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, 113-8657 Japan
| | - Agustín González-Fontes
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, Sevilla 41013, Spain
| | - Juan J Camacho-Cristóbal
- Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide, Sevilla 41013, Spain
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Matthes MS, Robil JM, Tran T, Kimble A, McSteen P. Increased transpiration is correlated with reduced boron deficiency symptoms in the maize tassel-less1 mutant. PHYSIOLOGIA PLANTARUM 2018; 163:344-355. [PMID: 29577325 DOI: 10.1111/ppl.12717] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 02/09/2018] [Accepted: 02/27/2018] [Indexed: 06/08/2023]
Abstract
Loss-of-function mutations of the tassel-less1 (tls1) gene in maize, which is the co-ortholog of the Arabidopsis boron (B) importer NIP5;1, leads to the loss of reproductive structures (tassels and ears). The tls1 phenotypes can be rescued by B supplementation in the field and in the greenhouse. As the rescue with B supplementation is variable in the field, we investigated additional abiotic factors, potentially causing this variation in controlled greenhouse conditions. We found that the B-dependent rescue of the tls1 mutant tassel phenotype was enhanced when plants were grown with a mix of high pressure sodium (HPS) and metal halide (MH) lamps. Normal and tls1 plants had a significant increase in transpiration and increased B content in the leaves in the greenhouse with the addition of MH lamps. Our findings imply that B transport to the shoot is enhanced through increased transpiration, which suggests that the xylem transpiration stream provides a significant supply of B in maize.
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Affiliation(s)
- Michaela S Matthes
- Division of Biological Sciences, Interdisciplinary Plant Group, and Missouri Maize Center, University of Missouri, 301 Christopher Bond Life Sciences Center, Columbia, MO 65211, USA
| | - Janlo M Robil
- Division of Biological Sciences, Interdisciplinary Plant Group, and Missouri Maize Center, University of Missouri, 301 Christopher Bond Life Sciences Center, Columbia, MO 65211, USA
| | - Thu Tran
- Division of Biological Sciences, Interdisciplinary Plant Group, and Missouri Maize Center, University of Missouri, 116 Tucker Hall, Columbia, MO 65211, USA
| | - Ashten Kimble
- Division of Biological Sciences, Interdisciplinary Plant Group, and Missouri Maize Center, University of Missouri, 301 Christopher Bond Life Sciences Center, Columbia, MO 65211, USA
| | - Paula McSteen
- Division of Biological Sciences, Interdisciplinary Plant Group, and Missouri Maize Center, University of Missouri, 301 Christopher Bond Life Sciences Center, Columbia, MO 65211, USA
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