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Boutasknit A, Ait-El-Mokhtar M, Fassih B, Ben-Laouane R, Wahbi S, Meddich A. Effect of Arbuscular Mycorrhizal Fungi and Rock Phosphate on Growth, Physiology, and Biochemistry of Carob under Water Stress and after Rehydration in Vermicompost-Amended Soil. Metabolites 2024; 14:202. [PMID: 38668330 PMCID: PMC11052070 DOI: 10.3390/metabo14040202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 03/14/2024] [Accepted: 03/30/2024] [Indexed: 04/28/2024] Open
Abstract
In the Mediterranean region, reforestation programs record failures following successive drought periods. The use of different plant-growth-promoting amendments and the understanding of drought-induced physiological and biochemical responses of carob will contribute to the reforestation program's success. In this study, the effects of arbuscular-mycorrhizal-fungi (AMF), vermicompost (VC), and rock phosphate (RP) on carob seedlings under drought stress (DS) and recovery (REC) conditions were evaluated. A greenhouse experiment was conducted with carob seedlings grown in the presence of AMF, VC, and RP, applied alone or in combination under well-watered (WW), DS (by stopping irrigation for 12 days), and recovery (REC) conditions. The obtained results indicated that the triple combination (AMF + VC + RP) presented the highest improvement in water potential, photosynthetic pigment content, stomatal conductance, and chlorophyll fluorescence compared to the controls under DS and after REC. In addition, this combination resulted in improved tolerance of carob seedlings to DS and a high potential for rapid recovery after rehydration due to a high accumulation of sugars, proteins, and antioxidant enzymes. In summary, the results underline the importance of inoculating carob with AMF in combination with (in)-organic amendments in improving its tolerance to DS and its recovery performances.
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Affiliation(s)
- Abderrahim Boutasknit
- Multidisciplinary Faculty of Nador, Mohammed Premier University, BP 300, Nador 62700, Morocco;
- Center of Agrobiotechnology and Bioengineering, Research Unit Labelled CNRST (Centre AgroBiotech-URL-7 CNRST-05), Abiotic and Biotic Constraints Team, Cadi Ayyad University (UCA), Marrakesh 40000, Morocco; (B.F.); (S.W.)
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Department of Biology, Faculty of Science Semlalia, Plant Physiology and Biotechnology Team, Cadi Ayyad University (UCA), Marrakesh 40000, Morocco
| | - Mohamed Ait-El-Mokhtar
- Laboratory of Biochemistry, Environment & Agri-Food URAC 36, Department of Biology, Faculty of Science and Techniques—Mohammedia, Hassan II University of Casablanca, Mohammedia 20000, Morocco
| | - Boujemaa Fassih
- Center of Agrobiotechnology and Bioengineering, Research Unit Labelled CNRST (Centre AgroBiotech-URL-7 CNRST-05), Abiotic and Biotic Constraints Team, Cadi Ayyad University (UCA), Marrakesh 40000, Morocco; (B.F.); (S.W.)
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Department of Biology, Faculty of Science Semlalia, Plant Physiology and Biotechnology Team, Cadi Ayyad University (UCA), Marrakesh 40000, Morocco
| | - Raja Ben-Laouane
- Laboratory of Environment and Health, Department of Biology, Faculty of Science and Techniques, Moulay Ismail University, BP 509, Errachidia 52000, Morocco;
| | - Said Wahbi
- Center of Agrobiotechnology and Bioengineering, Research Unit Labelled CNRST (Centre AgroBiotech-URL-7 CNRST-05), Abiotic and Biotic Constraints Team, Cadi Ayyad University (UCA), Marrakesh 40000, Morocco; (B.F.); (S.W.)
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Department of Biology, Faculty of Science Semlalia, Plant Physiology and Biotechnology Team, Cadi Ayyad University (UCA), Marrakesh 40000, Morocco
| | - Abdelilah Meddich
- Center of Agrobiotechnology and Bioengineering, Research Unit Labelled CNRST (Centre AgroBiotech-URL-7 CNRST-05), Abiotic and Biotic Constraints Team, Cadi Ayyad University (UCA), Marrakesh 40000, Morocco; (B.F.); (S.W.)
- Laboratory of Agro-Food, Biotechnologies and Valorization of Plant Bioresources (AGROBIOVAL), Department of Biology, Faculty of Science Semlalia, Plant Physiology and Biotechnology Team, Cadi Ayyad University (UCA), Marrakesh 40000, Morocco
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Liu D, Zhao C, Li G, Chen Z, Wang S, Huang C, Zhang P. Shrub leaf area and leaf vein trait trade-offs in response to the light environment in a vegetation transitional zone. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP24011. [PMID: 38621017 DOI: 10.1071/fp24011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 03/18/2024] [Indexed: 04/17/2024]
Abstract
The leaf is an important site for energy acquisition and material transformation in plants. Leaf functional traits and their trade-off mechanisms reflect the resource utilisation efficiency and habitat adaptation strategies of plants, and contribute to our understanding of the mechanism by which the distribution pattern of plant populations in arid and semi-arid areas influences the evolution of vegetation structure and function. We selected two natural environments, the tree-shrub community canopy area and the shrub-grass community open area in the transition zone between the Qinghai-Tibet Plateau and the Loess Plateau. We studied the trade-off relationships of leaf area with leaf midvein diameter and leaf vein density in Cotoneaster multiflorus using the standardised major axis (SMA) method. The results show that the growth pattern of C. multiflorus , which has small leaves of high density and extremely small vein diameters, in the open area. The water use efficiency and net photosynthetic rate of plants in the open area were significantly greater than those of plants growing in the canopy area. The adaptability of C. multiflorus to environments with high light and low soil water content reflects its spatial colonisation potential in arid and semiarid mountains.
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Affiliation(s)
- Dingyue Liu
- Gansu Province Wetland Resources Protection and Industrial Development Engineering Research Center, College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou, Gansu 730100, China
| | - Chengzhang Zhao
- Gansu Province Wetland Resources Protection and Industrial Development Engineering Research Center, College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou, Gansu 730100, China
| | - Geyang Li
- Gansu Province Wetland Resources Protection and Industrial Development Engineering Research Center, College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou, Gansu 730100, China
| | - Zhini Chen
- Gansu Province Wetland Resources Protection and Industrial Development Engineering Research Center, College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou, Gansu 730100, China; and Xinglongshan Forest Ecosystem National Positioning Observation and Research Station, Lanzhou 730100, China
| | - Suhong Wang
- Gansu Province Wetland Resources Protection and Industrial Development Engineering Research Center, College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou, Gansu 730100, China
| | - Chenglu Huang
- Gansu Province Wetland Resources Protection and Industrial Development Engineering Research Center, College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou, Gansu 730100, China
| | - Peixian Zhang
- Gansu Province Wetland Resources Protection and Industrial Development Engineering Research Center, College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou, Gansu 730100, China
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Tang H, Hassan MU, Feng L, Nawaz M, Shah AN, Qari SH, Liu Y, Miao J. The Critical Role of Arbuscular Mycorrhizal Fungi to Improve Drought Tolerance and Nitrogen Use Efficiency in Crops. FRONTIERS IN PLANT SCIENCE 2022; 13:919166. [PMID: 35873982 PMCID: PMC9298553 DOI: 10.3389/fpls.2022.919166] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/09/2022] [Indexed: 05/14/2023]
Abstract
Drought stress (DS) is a serious abiotic stress and a major concern across the globe as its intensity is continuously climbing. Therefore, it is direly needed to develop new management strategies to mitigate the adverse effects of DS to ensure better crop productivity and food security. The use of arbuscular mycorrhizal fungi (AMF) has emerged as an important approach in recent years to improve crop productivity under DS conditions. AMF establishes a relationship with 80% of land plants and it induces pronounced impacts on plant growth and provides protection to plants from abiotic stress. Drought stress significantly reduces plant growth and development by inducing oxidative stress, disturbing membrane integrity, plant water relations, nutrient uptake, photosynthetic activity, photosynthetic apparatus, and anti-oxidant activities. However, AMF can significantly improve the plant tolerance against DS. AMF maintains membrane integrity, improves plant water contents, nutrient and water uptake, and water use efficiency (WUE) therefore, improve the plant growth under DS. Moreover, AMF also protects the photosynthetic apparatus from drought-induced oxidative stress and improves photosynthetic efficiency, osmolytes, phenols and hormone accumulation, and reduces the accumulation of reactive oxygen species (ROS) by increasing anti-oxidant activities and gene expression which provide the tolerance to plants against DS. Therefore, it is imperative to understand the role of AMF in plants grown under DS. This review presented the different functions of AMF in different responses of plants under DS. We have provided a detailed picture of the different mechanisms mediated by AMF to induce drought tolerance in plants. Moreover, we also identified the potential research gaps that must be fulfilled for a promising future for AMF. Lastly, nitrogen (N) is an important nutrient needed for plant growth and development, however, the efficiency of applied N fertilizers is quite low. Therefore, we also present the information on how AMF improves N uptake and nitrogen use efficiency (NUE) in plants.
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Affiliation(s)
- Haiying Tang
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, China
| | - Muhammad Umair Hassan
- Research Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang, China
| | - Liang Feng
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Key Laboratory of Crop Eco-physiology and Farming System in Southwest, Ministry of Agriculture and Rural Affairs, Chengdu, China
| | - Muhammad Nawaz
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Adnan Noor Shah
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Sameer H. Qari
- Department of Biology, Al-Jumum University College, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Ying Liu
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, China
| | - Jianqun Miao
- School of Computer Information and Engineering, Jiangxi Agricultural University, Nanchang, China
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Santos M, Nicodemos J, Santos MG. Dynamics of nonstructural carbohydrates in a deciduous woody species from tropical dry forests under recurrent water deficit. PHYSIOLOGIA PLANTARUM 2022; 174:e13632. [PMID: 35060144 DOI: 10.1111/ppl.13632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 01/12/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
In tropical dry forests, both the dry and the short rainy seasons have become increasingly irregular. This study replicated these conditions to investigate the effects of two water deficit cycles on Cenostigma microphyllum seedlings. Impacts were assessed by measuring growth traits, water relations, gas exchange, and dynamics of nonstructural carbohydrate (NSC) content in the whole plant under greenhouse conditions in potted plants. In the first water deficit cycle, the leaf relative water content (RWC) was maintained at the expense of a rapid drop in gas exchange. Furthermore, there was a slight accumulation of NSC, mainly soluble sugars (SS) in the stem wood and roots, to the detriment of height and stem diameter growth. In the second cycle, the leaf RWC remained 40% higher than the lowest level measured in the first water deficit, and CO2 assimilation remained twice as long in previously stressed plants. The SS content of the stems and roots was strongly correlated with the predawn leaf RWC. No strong reduction was observed in the bark stock even with the gradual increase of SS in the wood. Our data suggest that under recurrent water deficit prior to leaf drop, CO2 assimilation is maintained, with the highest possible leaf RWC, under reduced stomatal conductance. This assists in SS transport to wood and root, which is no longer used to support the growth of the aboveground parts.
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Affiliation(s)
- Mariana Santos
- Laboratório de Fisiologia Vegetal, Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Brazil
| | - Joana Nicodemos
- Laboratório de Fisiologia Vegetal, Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Brazil
| | - Mauro G Santos
- Laboratório de Fisiologia Vegetal, Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Brazil
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Wright CL, de Lima ALA, de Souza ES, West JB, Wilcox BP. Plant functional types broadly describe water use strategies in the Caatinga, a seasonally dry tropical forest in northeast Brazil. Ecol Evol 2021; 11:11808-11825. [PMID: 34522343 PMCID: PMC8427645 DOI: 10.1002/ece3.7949] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 11/11/2022] Open
Abstract
In seasonally dry tropical forests, plant functional type can be classified as deciduous low wood density, deciduous high wood density, or evergreen high wood density species. While deciduousness is often associated with drought-avoidance and low wood density is often associated with tissue water storage, the degree to which these functional types may correspond to diverging and unique water use strategies has not been extensively tested.We examined (a) tolerance to water stress, measured by predawn and mid-day leaf water potential; (b) water use efficiency, measured via foliar δ13C; and (c) access to soil water, measured via stem water δ18O.We found that deciduous low wood density species maintain high leaf water potential and low water use efficiency. Deciduous high wood density species have lower leaf water potential and variable water use efficiency. Both groups rely on shallow soil water. Evergreen high wood density species have low leaf water potential, higher water use efficiency, and access alternative water sources. These findings indicate that deciduous low wood density species are drought avoiders, with a specialized strategy for storing root and stem water. Deciduous high wood density species are moderately drought tolerant, and evergreen high wood density species are the most drought tolerant group.Synthesis. Our results broadly support the plant functional type framework as a way to understand water use strategies, but also highlight species-level differences.
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Affiliation(s)
- Cynthia L. Wright
- Environmental Sciences DivisionOak Ridge National LaboratoryOak RidgeTNUSA
- Ecology and Conservation BiologyTexas A&M UniversityCollege StationTXUSA
| | - André L. A. de Lima
- Universidade Federal Rural de Pernambuco/Unidade Acadêmica de Serra Talhada (UFRPE/UAST)Serra TalhadaBrasil
| | - Eduardo S. de Souza
- Universidade Federal Rural de Pernambuco/Unidade Acadêmica de Serra Talhada (UFRPE/UAST)Serra TalhadaBrasil
| | - Jason B. West
- Ecology and Conservation BiologyTexas A&M UniversityCollege StationTXUSA
| | - Bradford P. Wilcox
- Ecology and Conservation BiologyTexas A&M UniversityCollege StationTXUSA
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Barbosa LS, de Souza TAF, de Oliveira Lucena E, da Silva LJR, Laurindo LK, dos Santos Nascimento G, Santos D. Arbuscular mycorrhizal fungi diversity and transpiratory rate in long-term field cover crop systems from tropical ecosystem, northeastern Brazil. Symbiosis 2021. [DOI: 10.1007/s13199-021-00805-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Effects of Arbuscular Mycorrhizal Fungi on Growth and Physiological Performance of Catalpa bungei C.A.Mey. under Drought Stress. FORESTS 2020. [DOI: 10.3390/f11101117] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Catalpa bungei C.A.Mey. is a common ornamental timber species. Its survival and growth are greatly affected by water scarcity in arid and semi-arid areas of Northwest China. Evidence suggests arbuscular mycorrhizal fungus (AMF) may improve plant drought resistance. However, there is limited information on the systematic effects of AMF on drought resistance in C. bungei seedlings. Here, a pot experiment was used to explore the effects of inoculation with the AMF Rhizophagus intraradices on the growth and physiological performance of C. bungei under different water treatment conditions. Three water levels and two mycorrhizal inoculation treatments were used with factorial design. The results showed that drought stress noticeably affected the growth and physiological performance of C. bungei seedlings. However, inoculation with R. intraradices significantly ameliorated the growth, and alleviated the effects of drought stress. The growth parameters of AMF-inoculated seedlings significantly increased regardless of water status. AMF changed the biomass allocation in seedlings by reducing the root mass ratio (RMR) and root/shoot ratio. AMF-inoculated seedlings displayed higher gas exchange parameters, photosynthetic pigment concentrations, specific leaf area (SLA), but lower specific leaf weight (SLW), regardless of water status. AMF alleviated drought-induced oxidative stress by attenuating the excess generation of reactive oxygen species (ROS), especially H2O2 and O2−, in leaves. Inoculation with AMF under drought stress also dramatically augmented indole-3-acetic acid (IAA) and gibberellins (GA3) levels and the IAA/abscisic acid (ABA) and GA3/ABA ratios, but reduced ABA and zeatin (ZT) levels in leaves. AMF symbiosis improved root morphology and promoted the absorption of nitrogen (N) and phosphorus (P) in seedlings. We conclude that inoculation with R. intraradices is potentially useful for afforestation and cultivation of C. bungei in Northwest China. Furthermore, AMF improved soil structure by increasing the glomalin-related soil protein (GRSP) contents and the proportion of macro-aggregates (0.25–0.5 mm) in the rhizosphere soil.
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Barros V, Melo A, Santos M, Nogueira L, Frosi G, Santos MG. Different resource-use strategies of invasive and native woody species from a seasonally dry tropical forest under drought stress and recovery. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 147:181-190. [PMID: 31865164 DOI: 10.1016/j.plaphy.2019.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 12/13/2019] [Accepted: 12/15/2019] [Indexed: 06/10/2023]
Abstract
Exotic plants in semiarid region have developed strategies for efficient use or capture of resources. They have become invasive and outperform native species. To understand which factors could explain the success of invasive woody species in a semiarid region, several physiological traits were analyzed in young plants of two invasive and two native species exposed to different water availability. Invasive plants showed low leaf construction cost, high phosphorus and nitrogen contents, reduced loss of instantaneous energy use efficiency, and smaller specific leaf area when compared to native species. This strategy led to a higher biomass gain and a high root/shoot ratio in both water treatments. After rehydration, invasive plants showed faster recovery and higher rates of CO2 assimilation. This resilience is fundamental for species in semiarid regions, and also increase uptake of nutrients. Maintaining a high photosynthetic rate, whenever there is water availability is a strategy that increases the performance of the species in relation to biomass gain. The low leaf construction cost and the fast recovery of the photosynthetic metabolism of invasive plants after limiting water resources explains the success of these species, and suggests that their potential may increase under prolonged and severe drought seasons.
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Affiliation(s)
- Vanessa Barros
- Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil
| | - Adglecianne Melo
- Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil
| | - Mariana Santos
- Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil
| | - Lairton Nogueira
- Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil
| | - Gabriella Frosi
- Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil
| | - Mauro Guida Santos
- Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil.
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Bahadur A, Batool A, Nasir F, Jiang S, Mingsen Q, Zhang Q, Pan J, Liu Y, Feng H. Mechanistic Insights into Arbuscular Mycorrhizal Fungi-Mediated Drought Stress Tolerance in Plants. Int J Mol Sci 2019; 20:E4199. [PMID: 31461957 PMCID: PMC6747277 DOI: 10.3390/ijms20174199] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 08/03/2019] [Accepted: 08/14/2019] [Indexed: 12/28/2022] Open
Abstract
Arbuscular mycorrhizal fungi (AMF) establish symbiotic interaction with 80% of known land plants. It has a pronounced impact on plant growth, water absorption, mineral nutrition, and protection from abiotic stresses. Plants are very dynamic systems having great adaptability under continuously changing drying conditions. In this regard, the function of AMF as a biological tool for improving plant drought stress tolerance and phenotypic plasticity, in terms of establishing mutualistic associations, seems an innovative approach towards sustainable agriculture. However, a better understanding of these complex interconnected signaling pathways and AMF-mediated mechanisms that regulate the drought tolerance in plants will enhance its potential application as an innovative approach in environmentally friendly agriculture. This paper reviews the underlying mechanisms that are confidently linked with plant-AMF interaction in alleviating drought stress, constructing emphasis on phytohormones and signaling molecules and their interaction with biochemical, and physiological processes to maintain the homeostasis of nutrient and water cycling and plant growth performance. Likewise, the paper will analyze how the AMF symbiosis helps the plant to overcome the deleterious effects of stress is also evaluated. Finally, we review how interactions between various signaling mechanisms governed by AMF symbiosis modulate different physiological responses to improve drought tolerance. Understanding the AMF-mediated mechanisms that are important for regulating the establishment of the mycorrhizal association and the plant protective responses towards unfavorable conditions will open new approaches to exploit AMF as a bioprotective tool against drought.
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Affiliation(s)
- Ali Bahadur
- MOE Key Laboratory of Cell Activities and Stress Adaptation, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Asfa Batool
- State Key Laboratory of Grassland Agro-ecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
- MOE Key Laboratory of Western China's Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Fahad Nasir
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
- Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun 130024, China
| | - Shengjin Jiang
- MOE Key Laboratory of Cell Activities and Stress Adaptation, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Qin Mingsen
- MOE Key Laboratory of Cell Activities and Stress Adaptation, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Qi Zhang
- MOE Key Laboratory of Cell Activities and Stress Adaptation, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jianbin Pan
- MOE Key Laboratory of Cell Activities and Stress Adaptation, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yongjun Liu
- MOE Key Laboratory of Cell Activities and Stress Adaptation, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Huyuan Feng
- MOE Key Laboratory of Cell Activities and Stress Adaptation, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
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Quiroga G, Erice G, Ding L, Chaumont F, Aroca R, Ruiz-Lozano JM. The arbuscular mycorrhizal symbiosis regulates aquaporins activity and improves root cell water permeability in maize plants subjected to water stress. PLANT, CELL & ENVIRONMENT 2019; 42:2274-2290. [PMID: 30916398 DOI: 10.1111/pce.13551] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 02/25/2019] [Accepted: 03/22/2019] [Indexed: 05/20/2023]
Abstract
Studies have suggested that increased root hydraulic conductivity in mycorrhizal roots could be the result of increased cell-to-cell water flux via aquaporins. This study aimed to elucidate if the key effect of the regulation of maize aquaporins by the arbuscular mycorrhizal (AM) symbiosis is the enhancement of root cell water transport capacity. Thus, water permeability coefficient (Pf ) and cell hydraulic conductivity (Lpc ) were measured in root protoplast and intact cortex cells of AM and non-AM plants subjected or not to water stress. Results showed that cells from droughted-AM roots maintained Pf and Lpc values of nonstressed plants, whereas in non-AM roots, these values declined drastically as a consequence of water deficit. Interestingly, the phosphorylation status of PIP2 aquaporins increased in AM plants subjected to water deficit, and Pf values higher than 12 μm s-1 were found only in protoplasts from AM roots, revealing the higher water permeability of AM root cells. In parallel, the AM symbiosis increased stomatal conductance, net photosynthesis, and related parameters, showing a higher photosynthetic capacity in these plants. This study demonstrates a better performance of AM root cells in water transport under water deficit, which is connected to the shoot physiological performance in terms of photosynthetic capacity.
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Affiliation(s)
- Gabriela Quiroga
- Departmento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), 18008, Granada, Spain
| | - Gorka Erice
- Departmento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), 18008, Granada, Spain
| | - Lei Ding
- Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, B-1348, Louvain-la-Neuve, Belgium
| | - François Chaumont
- Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, B-1348, Louvain-la-Neuve, Belgium
| | - Ricardo Aroca
- Departmento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), 18008, Granada, Spain
| | - Juan Manuel Ruiz-Lozano
- Departmento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), 18008, Granada, Spain
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