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Montazeaud G, Keller L. Greenbeards in plants? THE NEW PHYTOLOGIST 2024; 242:870-877. [PMID: 38403933 DOI: 10.1111/nph.19599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/15/2024] [Indexed: 02/27/2024]
Abstract
Greenbeards are selfish genetic elements that make their bearers behave either altruistically towards individuals bearing similar greenbeard copies or harmfully towards individuals bearing different copies. They were first proposed by W. D. Hamilton over 50 yr ago, to illustrate that kin selection may operate at the level of single genes. Examples of greenbeards have now been reported in a wide range of taxa, but they remain undocumented in plants. In this paper, we discuss the theoretical likelihood of greenbeard existence in plants. We then question why the greenbeard concept has never been applied to plants and speculate on how hypothetical greenbeards could affect plant-plant interactions. Finally, we point to different research directions to improve our knowledge of greenbeards in plants.
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Affiliation(s)
- Germain Montazeaud
- Department of Ecology and Evolution, University of Lausanne, 1015, Lausanne, Switzerland
- AGAP, Univ Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, 34000, France
| | - Laurent Keller
- Social Evolution Unit, Cornuit 8, BP 855, Chesières, Switzerland
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2
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Falik O, Hoffmann I, Novoplansky A. A novel type of neighbour perception elicits reproductive plasticity in an annual plant with a mixed mating system. PLANT BIOLOGY (STUTTGART, GERMANY) 2024; 26:415-420. [PMID: 38315483 DOI: 10.1111/plb.13624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 01/17/2024] [Indexed: 02/07/2024]
Abstract
Plants display various forms of phenotypic plasticity in anticipation of changing conditions, many of which are influenced by information obtained from neighbouring plants. Here, we tested the hypothesis that cleistogamic Lamium amplexicaule plants can adaptively modify production of chasmogamous (CH) and cleistogamous (CL) flowers based on the perception of conspecific neighbours. The production and proportion of CH and CL flowers was examined in individual L. amplexicaule grown at varying densities or treated with root leachates from plants grown at different densities. When growing at high density or treated with root leachates from high-density pots, L. amplexicaule increased production of more expensive, potentially outcrossing CH flowers. In contrast, single plants or plants treated with root leachates from empty pots or single-source plants predominantly developed cheaper, self-pollinated CL flowers. The results demonstrate a novel root-based neighbour-perception modality that enables plants to adaptively adjust production of CH and CL flowers in response to the presence of potential reproductive partners. Further research is needed to explore the broader ecological implications of this novel interplant cueing on reproductive bet-hedging and plasticity in natural settings, as well as to identify the involved cues and their mode of operation.
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Affiliation(s)
- O Falik
- Mitrani Department of Desert Ecology, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion, Israel
- Achva Academic College, Arugot, Israel
| | - I Hoffmann
- Mitrani Department of Desert Ecology, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion, Israel
| | - A Novoplansky
- Mitrani Department of Desert Ecology, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion, Israel
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3
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Li HY, Guo Y, Jin BY, Yang XF, Kong CH. Phytochemical Cue for the Fitness Costs of Herbicide-Resistant Weeds. PLANTS (BASEL, SWITZERLAND) 2023; 12:3158. [PMID: 37687404 PMCID: PMC10490342 DOI: 10.3390/plants12173158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 08/28/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023]
Abstract
Despite increasing knowledge of the fitness costs of viability and fecundity involved in the herbicide-resistant weeds, relatively little is known about the linkage between herbicide resistance costs and phytochemical cues in weed species and biotypes. This study demonstrated relative fitness and phytochemical responses in six herbicide-resistant weeds and their susceptible counterparts. There were significant differences in the parameters of viability (growth and photosynthesis), fecundity fitness (flowering and seed biomass) and a ubiquitous phytochemical (-)-loliolide levels between herbicide-resistant weeds and their susceptible counterparts. Fitness costs occurred in herbicide-resistant Digitaria sanguinalis and Leptochloa chinensis but they were not observed in herbicide-resistant Alopecurus japonicas, Eleusine indica, Ammannia arenaria, and Echinochloa crus-galli. Correlation analysis indicated that the morphological characteristics of resistant and susceptible weeds were negatively correlated with (-)-loliolide concentration, but positively correlated with lipid peroxidation malondialdehyde and total phenol contents. Principal component analysis showed that the lower the (-)-loliolide concentration, the stronger the adaptability in E. crus-galli and E. indica. Therefore, not all herbicide-resistant weeds have fitness costs, but the findings showed several examples of resistance leading to improved fitness even in the absence of herbicides. In particular, (-)-loliolide may act as a phytochemical cue to explain the fitness cost of herbicide-resistant weeds by regulating vitality and fecundity.
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Affiliation(s)
- Hong-Yu Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (H.-Y.L.); (Y.G.); (B.-Y.J.)
| | - Yan Guo
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (H.-Y.L.); (Y.G.); (B.-Y.J.)
| | - Bo-Yan Jin
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (H.-Y.L.); (Y.G.); (B.-Y.J.)
| | - Xue-Fang Yang
- College of Life Science, Hebei University, Baoding 071000, China
| | - Chui-Hua Kong
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (H.-Y.L.); (Y.G.); (B.-Y.J.)
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4
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Mani S, Ralph SJ, Swargiary G, Rani M, Wasnik S, Singh SP, Devi A. Therapeutic Targeting of Mitochondrial Plasticity and Redox Control to Overcome Cancer Chemoresistance. Antioxid Redox Signal 2023; 39:591-619. [PMID: 37470214 DOI: 10.1089/ars.2023.0379] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Significance: Mitochondria are subcellular organelles performing essential metabolic functions contributing to cellular bioenergetics and regulation of cell growth or death. The basic mitochondrial function in fulfilling the need for cell growth and vitality is evidenced whereby cancer cells with depleted mitochondrial DNA (rho zero, p0 cells) no longer form tumors until newly recruited mitochondria are internalized into the rho zero cells. Herein lies the absolute dependency on mitochondria for tumor growth. Hence, mitochondria are key regulators of cell death (by apoptosis, necroptosis, or other forms of cell death) and are, therefore, important targets for anticancer therapy. Recent Advances: Mitochondrial plasticity regulating their state of fusion or fission is key to the chemoresistance properties of cancer cells by promoting pro-survival pathways, enabling the mitochondria to mitigate against the cellular stresses and extreme conditions within the tumor microenvironment caused by chemotherapy, hypoxia, or oxidative stress. Critical Issues: This review discusses many characteristics of mitochondria, the processes and pathways controlling the dynamic changes occurring in the morphology of mitochondria, the roles of reactive oxygen species, and their relationship with mitochondrial fission or fusion. It also examines the relationship of redox to mitophagy when mitochondria become compromised and its effect on cancer cell survival, stemness, and the changes accompanying malignant progression from primary tumors to metastatic disease. Future Directions: A challenging question that arises is whether the changes in mitochondrial dynamics and their regulation can provide opportunities for improving drug targeting during cancer treatment and enhancing survival outcomes. Antioxid. Redox Signal. 39, 591-619.
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Affiliation(s)
- Shalini Mani
- Centre for Emerging Diseases, Department of Biotechnology, Jaypee Institute of Information Technology, Noida, India
| | - Stephen J Ralph
- School of Pharmacy and Medical Sciences, Griffith University, Southport, Australia
| | - Geeta Swargiary
- Centre for Emerging Diseases, Department of Biotechnology, Jaypee Institute of Information Technology, Noida, India
| | - Madhu Rani
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Samiksha Wasnik
- Department of Regenerative Medicine, Loma Linda University Health, Loma Linda, California, USA
| | - Shashi Prakash Singh
- Special Centre of Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
| | - Annu Devi
- Special Centre of Molecular Medicine, Jawaharlal Nehru University, New Delhi, India
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Mahal HF, Barber-Cross T, Brown C, Spaner D, Cahill JF. Changes in the Amount and Distribution of Soil Nutrients and Neighbours Have Differential Impacts on Root and Shoot Architecture in Wheat ( Triticum aestivum). PLANTS (BASEL, SWITZERLAND) 2023; 12:2527. [PMID: 37447087 DOI: 10.3390/plants12132527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/23/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023]
Abstract
Plants exhibit differential behaviours through changes in biomass development and distribution in response to environmental cues, which may impact crops uniquely. We conducted a mesocosm experiment in pots to determine the root and shoot behavioural responses of wheat, T. aestivum. Plants were grown in homogeneous or heterogeneous and heavily or lightly fertilized soil, and alone or with a neighbour of the same or different genetic identity (cultivars: CDC Titanium, Carberry, Glenn, Go Early, and Lillian). Contrary to predictions, wheat did not alter relative reproductive effort in the presence of neighbours, more nutrients, or homogenous soil. Above and below ground, the plants' tendency to use potentially shared space exhibited high levels of plasticity. Above ground, they generally avoided shared, central aerial space when grown with neighbours. Unexpectedly, nutrient amount and distribution also impacted shoots; plants that grew in fertile or homogenous environments increased shared space use. Below ground, plants grown with related neighbours indicated no difference in neighbour avoidance. Those in homogenous soil produced relatively even roots, and plants in heterogeneous treatments produced more roots in nutrient patches. Additionally, less fertile soil resulted in pot-level decreases in root foraging precision. Our findings illustrate that explicit coordination between above- and belowground biomass in wheat may not exist.
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Affiliation(s)
- Habba F Mahal
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
| | - Tianna Barber-Cross
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
| | - Charlotte Brown
- Département de Biologie, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Dean Spaner
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - James F Cahill
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
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Mazal L, Fajardo A, Till-Bottraud I, Corenblit D, Fumanal B. Kin selection, kin recognition and kin discrimination in plants revisited: A claim for considering environmental and genetic variability. PLANT, CELL & ENVIRONMENT 2023; 46:2007-2016. [PMID: 36916702 DOI: 10.1111/pce.14584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 02/17/2023] [Accepted: 03/10/2023] [Indexed: 06/08/2023]
Affiliation(s)
- Lucas Mazal
- Université Clermont Auvergne, CNRS, GEOLAB, Clermont-Ferrand, France
| | - Alex Fajardo
- Instituto de Investigación Interdisciplinaria (I3), Vicerrectoría Académica, Universidad de Talca, Campus Lircay, Talca, Chile
| | | | - Dov Corenblit
- Université Clermont Auvergne, CNRS, GEOLAB, Clermont-Ferrand, France
| | - Boris Fumanal
- Université Clermont Auvergne, INRAE, UMR 547 PIAF, Clermont-Ferrand, France
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Ding L, Zhao HH, Li HY, Yang XF, Kong CH. Kin Recognition in an Herbicide-Resistant Barnyardgrass ( Echinochloa crus-galli L.) Biotype. PLANTS (BASEL, SWITZERLAND) 2023; 12:1498. [PMID: 37050124 PMCID: PMC10096639 DOI: 10.3390/plants12071498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/28/2023] [Accepted: 03/28/2023] [Indexed: 06/19/2023]
Abstract
Despite increasing evidence of kin recognition in natural and crop plants, there is a lack of knowledge of kin recognition in herbicide-resistant weeds that are escalating in cropping systems. Here, we identified a penoxsulam-resistant barnyardgrass biotype with the ability for kin recognition from two biotypes of penoxsulam-susceptible barnyardgrass and normal barnyardgrass at different levels of relatedness. When grown with closely related penoxsulam-susceptible barnyardgrass, penoxsulam-resistant barnyardgrass reduced root growth and distribution, lowering belowground competition, and advanced flowering and increased seed production, enhancing reproductive effectiveness. However, such kin recognition responses were not occurred in the presence of distantly related normal barnyardgrass. Root segregation, soil activated carbon amendment, and root exudates incubation indicated chemically-mediated kin recognition among barnyardgrass biotypes. Interestingly, penoxsulam-resistant barnyardgrass significantly reduced a putative signaling (-)-loliolide production in the presence of closely related biotype but increased production when growing with distantly related biotype and more distantly related interspecific allelopathic rice cultivar. Importantly, genetically identical penoxsulam-resistant and -susceptible barnyardgrass biotypes synergistically interact to influence the action of allelopathic rice cultivar. Therefore, kin recognition in plants could also occur at the herbicide-resistant barnyardgrass biotype level, and intraspecific kin recognition may facilitate cooperation between genetically related biotypes to compete with interspecific rice, offering many potential implications and applications in paddy systems.
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Affiliation(s)
- Le Ding
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (L.D.); (H.-Y.L.)
| | - Huan-Huan Zhao
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China;
| | - Hong-Yu Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (L.D.); (H.-Y.L.)
| | - Xue-Fang Yang
- College of Life Science, Hebei University, Baoding 071000, China;
| | - Chui-Hua Kong
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (L.D.); (H.-Y.L.)
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8
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Aguirrebengoa M, Müller C, Hambäck PA, González-Megías A. Density-Dependent Effects of Simultaneous Root and Floral Herbivory on Plant Fitness and Defense. PLANTS (BASEL, SWITZERLAND) 2023; 12:283. [PMID: 36678999 PMCID: PMC9867048 DOI: 10.3390/plants12020283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/23/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
Plants are attacked by multiple herbivores, and depend on a precise regulation of responses to cope with a wide range of antagonists. Simultaneous herbivory can occur in different plant compartments, which may pose a serious threat to plant growth and reproduction. In particular, plants often face co-occurring root and floral herbivory, but few studies have focused on such interactions. Here, we investigated in the field the combined density-dependent effects of root-chewing cebrionid beetle larvae and flower-chewing pierid caterpillars on the fitness and defense of a semiarid Brassicaceae herb. We found that the fitness impact of both herbivore groups was independent and density-dependent. Increasing root herbivore density non-significantly reduced plant fitness, while the relationship between increasing floral herbivore density and the reduction they caused in both seed number and seedling emergence was non-linear. The plant defensive response was non-additive with regard to the different densities of root and floral herbivores; high floral herbivore density provoked compensatory investment in reproduction, and this tolerance response was combined with aboveground chemical defense induction when also root herbivore density was high. Plants may thus prioritize specific trait combinations in response to varying combined below- and aboveground herbivore densities to minimize negative impacts on fitness.
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Affiliation(s)
| | - Caroline Müller
- Department of Chemical Ecology, Bielefeld University, 33615 Bielefeld, Germany
| | - Peter A. Hambäck
- Department of Ecology, Environment and Plant Sciences, Stockholm University, 106 91 Stockholm, Sweden
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9
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Li J, Zhao Q, Li W, He J, Xu X. Distinct kin strategies of the legume soybean and the non-legume balsam by accomplishing different nitrogen acquisition and rhizosphere microbiome composition. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 110:103-113. [PMID: 34967078 DOI: 10.1111/tpj.15656] [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: 10/12/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
SUMMARYKin selection has been proposed vvto be an important mechanism for plant relatives growing together. To reveal kin recognition, we used 15N labeling to assess the short‐term nitrogen (N) acquisition (uptake of nitrate and ammonium), long‐term N utilization (recovery of added urea), N‐use efficiency (NUE) and rhizosphere microbiome in leguminous Glycine max and non‐leguminous Impatiens balsamina. Individuals of each species were planted pairwise with either a sibling or a stranger. Enzyme activity and soil microbial composition were compared between kinship groups. Compared with strangers, G. max siblings increased aboveground biomass, NUE, and nitrogenase activity, whereas I. balsamina siblings decreased root biomass and increased uptake rate of nitrate and potential nitrification rate. Plant kinship affected soil bacterial communities by enriching specific groups possessing explicit eco‐functions (Rhizobiales for G. max and Nitrospira for I. balsamina). Kinship‐sensitive operational taxonomic units formed independent modules in the bacterial co‐occurrence network and were positively correlated with plant growth performance, N acquisition and enzymatic activity. Plant kin recognition may depend on the growth strategies of the plant species. Kin selection was dominant in G. max by enhancing biological N fixation through the enrichment of symbiotic rhizobia (demonstrated by aboveground growth and NUE superiority among siblings). Kin selection and niche partitioning occurred simultaneously in I. balsamina, expressed through reduced root allocation but increased nitrate uptake, and enhanced soil N nitrification, by enriching functional microbial groups. Kin recognition responses are the consequence of complex interactions among the host plant, the microbiome, and soil nutrient cycling and utilization processes.
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Affiliation(s)
- Jie Li
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Qingxia Zhao
- Institute of New Rural Development, Guizhou University, Guiyang, 550025, China
| | - Weilin Li
- Public Technology Service Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jizheng He
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, 3010, Victoria, Australia
| | - Xingliang Xu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources, Chinese Academy of Sciences, Beijing, 100101, China
- CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences (CAS), Beijing, 100101, China
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10
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Buckley YM, Puy J. The macroecology of plant populations from local to global scales. THE NEW PHYTOLOGIST 2022; 233:1038-1050. [PMID: 34536970 DOI: 10.1111/nph.17749] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 09/02/2021] [Indexed: 06/13/2023]
Abstract
Population ecologists develop theoretical and pragmatic knowledge of how and why populations change or remain stable, how life histories evolve and devise management strategies for populations of concern. However, forecasting the effects of global change or recommending management strategies is often urgent, requiring ecologists to work without detailed local evidence while using data and models from outside the focal location or species. Here we explore how the comparative ecology of populations, population macroecology, can be used to develop generalisations within and between species across different scales, using available demographic, environmental, life history, occurrence and trait data. We outline the strengths and weaknesses of using broad climatic variables and suitability inferred from probability of occupancy models to represent environmental variation in comparative analyses. We evaluate the contributions of traits, environment and their interaction as drivers of life history strategy. We propose that insights from life history theory, together with the adaptive capacity of populations and individuals, can inform on 'persist in place' vs 'shift in space' responses to changing conditions. As demographic data accumulate at landscape and regional scales for single species, and throughout plant phylogenies, we will have new opportunities for testing macroecological generalities within and across species.
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Affiliation(s)
- Yvonne M Buckley
- School of Natural Sciences, Zoology, Trinity College Dublin, Dublin 2, Ireland
- School of Biological Sciences, The University of Queensland, St Lucia, 4072, QLD, Australia
| | - Javier Puy
- School of Natural Sciences, Zoology, Trinity College Dublin, Dublin 2, Ireland
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11
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Zhu H, David Wang W, Li F, Sun X, Li B, Song Q, Kou J, Ma K, Ren X, Dong Z. Facile preparation of ultrafine Pd nanoparticles anchored on covalent triazine frameworks catalysts for efficient N-alkylation. J Colloid Interface Sci 2022; 606:1340-1351. [PMID: 34500150 DOI: 10.1016/j.jcis.2021.08.059] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/03/2021] [Accepted: 08/08/2021] [Indexed: 01/25/2023]
Abstract
The fabrication of stable and efficient catalysts for green and economic catalytic transformation is significant. Here, highly stable covalent triazine frameworks (CTF-1) were used as the supporting material for anchoring ultrafine Pd nanoparticles (NPs) via a facile impregnation process and a one-pot calcination-reduction strategy. The widespread dispersion of ultrafine Pd NPs was a result of the abundant high nitrogen-content triazine groups of CTF-1 that endowed the catalyst Pd@CTF-1 with high catalytic activity. The catalytic performance of Pd@CTF-1 was demonstrated by the one-pot N-alkylation of benzaldehyde with aniline (or nitrobenzene) under mild reaction conditions, and Pd@CTF-1 exhibited a wide range of general applicability for N-alkylation reactions. The reaction mechanism for the N-alkylation reaction was also studied in detail. In addition, the Pd@CTF-1 catalyst exhibited high thermal and chemical stability, maintaining good catalytic efficiency after multiple reaction cycles. This study provides new insights for the fabrication of organic supporting materials with highly dispersed active catalytic sites that can lead to excellent catalytic performance for efficient, economical, and green reactions.
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Affiliation(s)
- Hanghang Zhu
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Wei David Wang
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China.
| | - Feng Li
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, PR China
| | - Xun Sun
- Shandong Applied Research Center of Gold Nanotechnology (Au-SDARC), School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, PR China
| | - Boyang Li
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Qiang Song
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Jinfang Kou
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Kexin Ma
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Xuanguang Ren
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Zhengping Dong
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China.
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12
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Biedrzycki ML, Bais HP. Kin Recognition in Plants: Did We Learn Anything From Roots? Front Ecol Evol 2022. [DOI: 10.3389/fevo.2021.785019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Kin recognition, manifesting through various traits such as changes in root or shoot growth, has been documented in several species of plants. Identifying this phenomenon in plants has intrinsic value itself, understanding why plants recognize kin and how it might benefit them evolutionarily has been of recent interest. Here we explore studies regarding nutrient and resource allocation in regard to kin recognition as well as discuss how kin recognition is involved in multispecies interactions with an emphasis on how plant roots are involved in these processes. Future directions of this research are also discussed.
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13
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Anten NPR, Chen BJW. Kin discrimination in allelopathy and consequences for agricultural weed control. PLANT, CELL & ENVIRONMENT 2021; 44:3475-3478. [PMID: 34449084 PMCID: PMC9290514 DOI: 10.1111/pce.14173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/23/2021] [Accepted: 08/06/2021] [Indexed: 06/08/2023]
Affiliation(s)
- Niels P. R. Anten
- Crop & Weed Ecology Group, Centre for Crop Systems AnalysisWageningen UniversityWageningenThe Netherlands
| | - Bin J. W. Chen
- College of Biology and the EnvironmentNanjing Forestry UniversityNanjingChina
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14
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Huang H, Xu C, Liu Q. ‘Social distancing’ between plants may amplify coastal restoration at early stage. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.14044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hao Huang
- School of Ecological and Environmental Sciences East China Normal University Shanghai P.R. China
| | - Chi Xu
- School of Life Sciences Nanjing University Nanjing P.R. China
| | - Quan‐Xing Liu
- School of Ecological and Environmental Sciences East China Normal University Shanghai P.R. China
- State Key Laboratory of Estuarine and Coastal Research and Center for Global Change and Ecological Forecasting East China Normal University Shanghai P.R. China
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15
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Almeida JM, Missagia CCC, Alves MAS. Effects of the availability of floral resources and neighboring plants on nectar robbery in a specialized pollination system. Curr Zool 2021; 68:541-548. [PMID: 36324535 PMCID: PMC9616065 DOI: 10.1093/cz/zoab083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 10/07/2021] [Indexed: 12/28/2022] Open
Abstract
Many plants pollinated by nectar-foraging animals have to maintain a balance between legitimate visitor attraction strategies and mechanisms that minimize illegitimate visits. This study investigated how floral display and neighboring species composition influences nectar robbing by hummingbirds in the tropical ornithophilous herb Heliconia spathocircinata. We tested the role of inflorescence display, flower abundance, and neighboring species in the reduction of nectar robbing in H. spathocircinata. Our results indicate that nectar robbing hummingbird activity was higher in moderately large inflorescence displays and that the frequency of nectar robbing in H. spathocircinata decreases with increased flower abundance and the presence of neighboring plant species. Neighboring non-ornithophilous plants decreased the frequency of nectar robbing in H. spathocircinata flowers to a greater extent than ornithophilous ones. These results suggest that nectar robbing hummingbirds are attracted to similar conditions that attract legitimate visitors and that spatial aggregation and mixed-species displays may represent a mechanism to dilute nectar robbing effects at an individual level.
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Affiliation(s)
- Júlia Mendonça Almeida
- Graduação, Instituto de Biociências, Universidade Federal do Estado do Rio de Janeiro (UNIRIO), CEP, Avenida Pasteur, 458, Rio de Janeiro 22290-240, Brazil
| | - Caio César Corrêa Missagia
- Departamento de Ecologia, Programa de Pós-Graduação em Ecologia e Evolução, Instituto de Biologia Roberto Alcantara Gomes (IBRAG), Laboratório de Ecologia de Aves e Comportamento, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524 Rio de Janeiro, RJ, CEP, Rio de Janeiro 20550-011, Brazil
| | - Maria Alice Santos Alves
- Departamento de Ecologia, IBRAG, Laboratório de Ecologia de Aves UERJ. Rua São Francisco Xavier, 524 Rio de Janeiro, RJ, CEP, Rio de Janeiro 20550-011, Brazil
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16
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Abstract
Allelopathy is an ecological phenomenon in which organisms interfere with each other. As a management strategy in agricultural systems, allelopathy can be mainly used to control weeds, resist pests, and disease and improve the interaction of soil nutrition and microorganisms. Volatile organic compounds (VOCs) are allelochemicals volatilized from plants and have been widely demonstrated to have different ecological functions. This review provides the recent advance in the allelopathic effects of VOCs on plants, such as growth, competition, dormancy, resistance of diseases and insect pests, content of reactive oxygen species (ROS), enzyme activity, respiration, and photosynthesis. VOCs also participate in plant-to-plant communication as a signaling substance. The main methods of collection and identification of VOCs are briefly summarized in this article. It also points out the disadvantages of VOCs and suggests potential directions to enhance research and solve mysteries in this emerging area. It is necessary to study the allelopathic mechanisms of plant VOCs so as to provide a theoretical basis for VOC applications. In conclusion, allelopathy of VOCs released by plants is a more economical, environmentally friendly, and effective measure to develop substantial agricultural industry by using the allelopathic effects of plant natural products.
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17
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Verdú M, Gómez JM, Valiente-Banuet A, Schöb C. Facilitation and plant phenotypic evolution. TRENDS IN PLANT SCIENCE 2021; 26:913-923. [PMID: 34112618 DOI: 10.1016/j.tplants.2021.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 04/02/2021] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
While antagonistic interactions between plants have been a major topic of eco-evolutionary research, little evidence exists on the evolution of positive plant interactions (i.e., plant facilitation). Here, we first summarize the existing empirical evidence on the role of facilitation as a selection pressure on plants. Then, we develop a theoretical eco-evolutionary framework based on fitness-trait functions and interaction effectiveness that provides predictions for how facilitation-related traits may evolve. As evolution may act at levels beyond the individual (such as groups or species), we discuss the subject of the units of evolutionary selection through facilitation. Finally, we use the proposed formal evolutionary framework for facilitation to identify areas of future research based on the knowledge gaps detected.
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Affiliation(s)
- M Verdú
- Centro de Investigaciones sobre Desertificación (CSIC-UV-GV), Ctra Moncada-Náquera km4.5, 46113 Moncada, (Valencia), Spain.
| | - J M Gómez
- Dpto de Ecología Funcional y Evolutiva, Estación Experimental de Zonas Áridas (EEZA-CSIC), Carretera de Sacramento s/n, La Cañada de San Urbano, 0-4120 Almería, Spain
| | - A Valiente-Banuet
- Departamento de Ecología de la Biodiversidad, Instituto de Ecología, Universidad Nacional Autónoma de México, A.P. 70-275, C.P. 04510, México D.F., México; Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510, México D.F., México
| | - C Schöb
- Institute of Agricultural Sciences, ETH Zurich, Universitätstrasse 2, 8092 Zurich, Switzerland
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18
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Subrahmaniam HJ, Roby D, Roux F. Toward Unifying Evolutionary Ecology and Genomics to Understand Positive Plant-Plant Interactions Within Wild Species. FRONTIERS IN PLANT SCIENCE 2021; 12:683373. [PMID: 34305981 PMCID: PMC8299075 DOI: 10.3389/fpls.2021.683373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 06/10/2021] [Indexed: 06/08/2023]
Abstract
In a local environment, plant networks include interactions among individuals of different species and among genotypes of the same species. While interspecific interactions are recognized as main drivers of plant community patterns, intraspecific interactions have recently gained attention in explaining plant community dynamics. However, an overview of intraspecific genotype-by-genotype interaction patterns within wild plant species is still missing. From the literature, we identified 91 experiments that were mainly designed to investigate the presence of positive interactions based on two contrasting hypotheses. Kin selection theory predicts partisan help given to a genealogical relative. The rationale behind this hypothesis relies on kin/non-kin recognition, with the positive outcome of kin cooperation substantiating it. On the other hand, the elbow-room hypothesis supports intraspecific niche partitioning leading to positive outcome when genetically distant genotypes interact. Positive diversity-productivity relationship rationalizes this hypothesis, notably with the outcome of overyielding. We found that both these hypotheses have been highly supported in experimental studies despite their opposite predictions between the extent of genetic relatedness among neighbors and the level of positive interactions. Interestingly, we identified a highly significant effect of breeding system, with a high proportion of selfing species associated with the presence of kin cooperation. Nonetheless, we identified several shortcomings regardless of the species considered, such as the lack of a reliable estimate of genetic relatedness among genotypes and ecological characterization of the natural habitats from which genotypes were collected, thereby impeding the identification of selective drivers of positive interactions. We therefore propose a framework combining evolutionary ecology and genomics to establish the eco-genomic landscape of positive GxG interactions in wild plant species.
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19
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Vaněčková E, Bouša M, Shestivska V, Kubišta J, Moreno‐García P, Broekmann P, Rahaman M, Zlámal M, Heyda J, Bernauer M, Sebechlebská T, Kolivoška V. Electrochemical Reduction of Carbon Dioxide on 3D Printed Electrodes. ChemElectroChem 2021. [DOI: 10.1002/celc.202100261] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Eva Vaněčková
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences Dolejškova 3 182 23 Prague 8 Czech Republic
- University of Chemistry and Technology Prague Faculty of Chemical Engineering Department of Physical Chemistry Technická 5 166 28 Prague 6 Czech Republic
| | - Milan Bouša
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences Dolejškova 3 182 23 Prague 8 Czech Republic
| | - Violetta Shestivska
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences Dolejškova 3 182 23 Prague 8 Czech Republic
| | - Jiří Kubišta
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences Dolejškova 3 182 23 Prague 8 Czech Republic
| | - Pavel Moreno‐García
- Department of Chemistry Biochemistry and Pharmaceutical Sciences University of Bern Freiestrasse 3 3012 Bern Switzerland
| | - Peter Broekmann
- Department of Chemistry Biochemistry and Pharmaceutical Sciences University of Bern Freiestrasse 3 3012 Bern Switzerland
| | - Motiar Rahaman
- Department of Chemistry Biochemistry and Pharmaceutical Sciences University of Bern Freiestrasse 3 3012 Bern Switzerland
| | - Martin Zlámal
- University of Chemistry and Technology Prague Faculty of Chemical Technology Department of Inorganic Technology Technická 5 166 28 Prague 6 Czech Republic
| | - Jan Heyda
- University of Chemistry and Technology Prague Faculty of Chemical Engineering Department of Physical Chemistry Technická 5 166 28 Prague 6 Czech Republic
| | - Milan Bernauer
- University of Chemistry and Technology Prague Faculty of Chemical Technology Department of Inorganic Technology Technická 5 166 28 Prague 6 Czech Republic
| | - Táňa Sebechlebská
- Department of Physical and Theoretical Chemistry Faculty of Natural Sciences Comenius University in Bratislava Ilkovičova 6 84215 Bratislava 4 Slovak Republic
| | - Viliam Kolivoška
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences Dolejškova 3 182 23 Prague 8 Czech Republic
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20
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Torices R, DeSoto L, Narbona E, Gómez JM, Pannell JR. Effects of the Relatedness of Neighbours on Floral Colour. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.589781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The reproductive success of plants depends both on their phenotype and the local neighbourhood in which they grow. Animal-pollinated plants may benefit from increased visitation when surrounded by attractive conspecific individuals, via a “magnet effect.” Group attractiveness is thus potentially a public good that can be exploited by individuals, with selfish exploitation predicted to depend on genetic relatedness within the group. Petal colour is a potentially costly trait involved in floral signalling and advertising to pollinators. Here, we assessed whether petal colour was plastically sensitive to the relatedness of neighbours in the annual herb Moricandia moricandioides, which produces purple petals through anthocyanin pigment accumulation. We also tested whether petal colour intensity was related to nectar volume and sugar content in a context-dependent manner. Although both petal colour and petal anthocyanin concentration did not significantly vary with the neighbourhood configuration, plants growing with kin made a significantly higher investment in petal anthocyanin pigments as a result of the greater number and larger size of their flowers. Moreover the genetic relatedness of neighbours significantly modified the relationship between floral signalling and reward quantity: while focal plants growing with non-kin showed a positive relationship between petal colour and nectar production, plants growing with kin showed a positive relationship between number of flowers and nectar volume, and sugar content. The observed plastic response to group relatedness might have important effects on pollinator behaviour and visitation, with direct and indirect effects on plant reproductive success and mating patterns, at least in those plant species with patchy and genetically structured populations.
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21
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Bilas RD, Bretman A, Bennett T. Friends, neighbours and enemies: an overview of the communal and social biology of plants. PLANT, CELL & ENVIRONMENT 2021; 44:997-1013. [PMID: 33270936 DOI: 10.1111/pce.13965] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 11/06/2020] [Accepted: 11/26/2020] [Indexed: 05/21/2023]
Abstract
Plants were traditionally seen as rather passive actors in their environment, interacting with each other only in so far as they competed for the same resources. In the last 30 years, this view has been spectacularly overturned, with a wealth of evidence showing that plants actively detect and respond to their neighbours. Moreover, there is evidence that these responses depend on the identity of the neighbour, and that plants may cooperate with their kin, displaying social behaviour as complex as that observed in animals. These plant-plant interactions play a vital role in shaping natural ecosystems, and are also very important in determining agricultural productivity. However, in terms of mechanistic understanding, we have only just begun to scratch the surface, and many aspects of plant-plant interactions remain poorly understood. In this review, we aim to provide an overview of the field of plant-plant interactions, covering the communal interactions of plants with their neighbours as well as the social behaviour of plants towards their kin, and the consequences of these interactions. We particularly focus on the mechanisms that underpin neighbour detection and response, highlighting both progress and gaps in our understanding of these fascinating but previously overlooked interactions.
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Affiliation(s)
- Roza D Bilas
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Amanda Bretman
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Tom Bennett
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
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22
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Wang NQ, Kong CH, Wang P, Meiners SJ. Root exudate signals in plant-plant interactions. PLANT, CELL & ENVIRONMENT 2021; 44:1044-1058. [PMID: 32931018 DOI: 10.1111/pce.13892] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/31/2020] [Accepted: 09/08/2020] [Indexed: 05/12/2023]
Abstract
Plant-to-plant signalling is a key mediator of interactions among plant species. Plants can perceive and respond to chemical cues emitted from their neighbours, altering survival and performance, impacting plant coexistence and community assembly. An increasing number of studies indicate root exudates as key players in plant-to-plant signalling. Root exudates mediate root detection and behaviour, kin recognition, flowering and production, driving inter- and intra-specific facilitation in cropping systems and mixed-species plantations. Altered interactions may be attributed to the signalling components within root exudates. Root ethylene, strigolactones, jasmonic acid, (-)-loliolide and allantoin are signalling chemicals that convey information on local conditions in plant-plant interactions. These root-secreted signalling chemicals appear ubiquitous in plants and trigger a series of belowground responses inter- and intra-specifically, involving molecular events in biosynthesis, secretion and action. The secretion of root signals, mainly mediated by ATP-binding cassette transporters, is critical. Root-secreted signalling chemicals and their molecular mechanisms are rapidly revealing a multitude of fascinating plant-plant interactions. However, many root signals, particularly species-specific signals and their underlying mechanisms, remain to be uncovered due to methodological limitations and root-soil interactions. A thorough understanding of root-secreted chemical signals and their mechanisms will offer many ecological implications and potential applications for sustainable agriculture.
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Affiliation(s)
- Nan-Qi Wang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Chui-Hua Kong
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Peng Wang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Scott J Meiners
- Department of Biological Sciences, Eastern Illinois University, Charleston, Illinois, USA
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23
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Anten NPR, Chen BJW. Detect thy family: Mechanisms, ecology and agricultural aspects of kin recognition in plants. PLANT, CELL & ENVIRONMENT 2021; 44:1059-1071. [PMID: 33522615 PMCID: PMC8048686 DOI: 10.1111/pce.14011] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 05/21/2023]
Abstract
The phenomenon that organisms can distinguish genetically related individuals from strangers (i.e., kin recognition) and exhibit more cooperative behaviours towards their relatives (i.e., positive kin discrimination) has been documented in a wide variety of organisms. However, its occurrence in plants has been considered only recently. Despite the concerns about some methodologies used to document kin recognition, there is sufficient evidence to state that it exists in plants. Effects of kin recognition go well beyond reducing resource competition between related plants and involve interactions with symbionts (e.g., mycorrhizal networks). Kin recognition thus likely has important implications for evolution of plant traits, diversity of plant populations, ecological networks and community structures. Moreover, as kin selection may result in less competitive traits and thus greater population performance, it holds potential promise for crop breeding. Exploration of these evo-ecological and agricultural implications requires adequate control and measurements of relatedness, sufficient replication at genotypic level and comprehensive measurements of performance/fitness effects of kin discrimination. The primary questions that need to be answered are: when, where and by how much positive kin discrimination improves population performance.
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Affiliation(s)
- Niels P. R. Anten
- Centre for Crop Systems AnalysisWageningen UniversityWageningenThe Netherlands
| | - Bin J. W. Chen
- College of Biology and the EnvironmentNanjing Forestry UniversityNanjingChina
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24
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Baluška F, Mancuso S. Individuality, self and sociality of vascular plants. Philos Trans R Soc Lond B Biol Sci 2021; 376:20190760. [PMID: 33550947 DOI: 10.1098/rstb.2019.0760] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Vascular plants are integrated into coherent bodies via plant-specific synaptic adhesion domains, action potentials (APs) and other means of long-distance signalling running throughout the plant bodies. Plant-specific synapses and APs are proposed to allow plants to generate their self identities having unique ways of sensing and acting as agents with their own goals guiding their future activities. Plants move their organs with a purpose and with obvious awareness of their surroundings and require APs to perform and control these movements. Self-identities allow vascular plants to act as individuals enjoying sociality via their self/non-self-recognition and kin recognition. Flowering plants emerge as cognitive and intelligent organisms when the major strategy is to attract and control their animal pollinators as well as seed dispersers by providing them with food enriched with nutritive and manipulative/addictive compounds. Their goal in interactions with animals is manipulation for reproduction, dispersal and defence. This article is part of the theme issue 'Basal cognition: multicellularity, neurons and the cognitive lens'.
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Affiliation(s)
| | - Stefano Mancuso
- Department of Agrifood Production and Environmental Sciences, University of Florence, Florence, Italy
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25
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B Cell Aberrance in Lupus: the Ringleader and the Solution. Clin Rev Allergy Immunol 2021; 62:301-323. [PMID: 33534064 DOI: 10.1007/s12016-020-08820-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2020] [Indexed: 12/18/2022]
Abstract
Systemic lupus erythematosus (SLE) is a prototypical autoimmune disease with high heterogeneity but the common characterization of numerous autoantibodies and systemic inflammation which lead to the damage of multiple organs. Aberrance of B cells plays a pivotal role in the immunopathogenesis of SLE via both antibody-dependent and antibody-independent manners. Escape of autoreactive B cells from the central and peripheral tolerance checkpoints, over-activation of B cells and their excessive cytokines release which drive T cells and dendritic cells stimulation, and dysregulated surface molecules, as well as intracellular signal pathways involved in B cell biology, are all contributing to B cell aberrance and participating in the pathogenesis of SLE. Based on that rationale, targeting aberrance of B cells and relevant molecules and pathways is expected to be a promising strategy for lupus control. Multiple approaches targeting B cells through different mechanisms have been attempted, including B-cell depletion via monoclonal antibodies against B-cell-specific molecules, blockade of B-cell survival and activation factors, suppressing T-B crosstalk by interrupting costimulatory molecules and inhibiting intracellular activation signaling cascade by targeting pathway molecules in B cells. Though most attempts ended in failure, the efficacy of B-cell targeting has been encouraged by the FDA approval of belimumab that blocks B cell-activating factor (BAFF) and the recommended use of anti-CD20 as a remedial therapy in refractory lupus. Still, quantities of clinical trials targeting B cells or relevant molecules are ongoing and some of them have displayed promising preliminary results. Additionally, advances in multi-omics studies help deepen our understandings of B cell biology in lupus and may promote the discovery of novel potential therapeutic targets. The combination of real-world data with basic research achievements may pave the road to conquering lupus.
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26
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Cossard GG, Pannell JR. Enhanced leaky sex expression in response to pollen limitation in the dioecious plant Mercurialis annua. J Evol Biol 2020; 34:416-422. [PMID: 33098734 PMCID: PMC7984330 DOI: 10.1111/jeb.13720] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 02/02/2023]
Abstract
In dioecious plants, males and females frequently show ‘leaky’ sex expression, with individuals occasionally producing flowers of the opposite sex. This leaky sex expression may have enabled the colonization of oceanic islands by dioecious plant species, and it is likely to represent the sort of variation upon which selection acts to bring about evolutionary transitions from dioecy to hermaphroditism. Although leakiness is commonly reported for dioecious species, it is not known whether it has plastic component. The question is interesting because males or females with an ability to enhance their leakiness plastically in the absence of mates would have an advantage of being able to produce progeny by self‐fertilization. Here, we demonstrate that leaky sex expression in the wind‐pollinated dioecious herb Mercurialis annua is plastically responsive to its mating context. We compared experimental populations of females growing either with or without males. Females growing in the absence of males were leakier in their sex expression than controls growing with males, producing more than twice as many male flowers. Our results thus provide a striking instance of plasticity in the reproductive behaviour of plants that is likely adaptive. We consider how females might sense their mating environment as a function of pollen availability, and we discuss possible constraints on the evolution of plasticity in sex expression when the environmental signals that individuals receive are unreliable.
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Affiliation(s)
- Guillaume G Cossard
- Department of Ecology and Evolution, Biophore Building, University of Lausanne, Lausanne, Switzerland
| | - John R Pannell
- Department of Ecology and Evolution, Biophore Building, University of Lausanne, Lausanne, Switzerland
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27
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A mathematical model of kin selection in floral displays. J Theor Biol 2020; 509:110470. [PMID: 32966826 DOI: 10.1016/j.jtbi.2020.110470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 07/30/2020] [Accepted: 08/26/2020] [Indexed: 11/20/2022]
Abstract
Plants can adjust their competitive traits for acquiring resources in response to the relatedness of their neighbours. Recently, it has been found that plants can alter their investment in traits of attracting pollinators based on kin-interaction. We build a mathematical model to study the optimal floral display to attract pollinators in a patch with kin structure. We show that when plants can attract pollinators to a whole patch through the magnet effect, the floral display should increase with the increasing relatedness of the plants in the patch. Our model also indicates that increasing investment into attracting pollinators is a form of altruism, reducing a plant's own seed production but increasing the contribution of other plants to its fitness. We also predict that seed production should increase with increasing relatedness in the patch. Our model provides the explicit conditions when resource allocation to attract pollinators in response to neighbour relatedness can be favoured by kin selection, and a possible mechanism for the plants to deal with the consequent loss of pollinator diversity and abundance.
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28
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Wang B. Neighbour effects do not always show consistent patterns, contrast of seed trait matters: evidence from a seed-rodent mutualism study. Behav Ecol Sociobiol 2020. [DOI: 10.1007/s00265-020-02900-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Tonnabel J, David P, Klein EK, Pannell JR. Sex‐specific selection on plant architecture through “budget” and “direct” effects in experimental populations of the wind‐pollinated herb,
Mercurialis annua. Evolution 2019; 73:897-912. [DOI: 10.1111/evo.13714] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 02/11/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Jeanne Tonnabel
- Department of Ecology and EvolutionUniversity of Lausanne CH‐1015 Lausanne Switzerland
| | - Patrice David
- CEFE, CNRS, Univ MontpellierUniv Paul Valéry Montpellier 3, EPHE, IRD Montpellier France
| | | | - John R. Pannell
- Department of Ecology and EvolutionUniversity of Lausanne CH‐1015 Lausanne Switzerland
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30
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McDonald GC, Gardner A, Pizzari T. Sexual selection in complex communities: Integrating interspecific reproductive interference in structured populations. Evolution 2019; 73:1025-1036. [PMID: 30941751 DOI: 10.1111/evo.13726] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/04/2019] [Accepted: 03/12/2019] [Indexed: 01/06/2023]
Abstract
The social structure of populations plays a key role in shaping variation in sexual selection. In nature, sexual selection occurs in communities of interacting species; however, heterospecifics are rarely included in characterizations of social structure. Heterospecifics can influence the reproductive outcomes of intrasexual competition by interfering with intraspecific sexual interactions (interspecific reproductive interference [IRI]). We outline the need for studies of sexual selection to incorporate heterospecifics as part of the social environment. We use simulations to show that classic predictions for the effect of social structure on sexual selection are altered by an interaction between social structure and IRI. This interaction has wide-ranging implications for patterns of sexual conflict and kin-selected reproductive strategies in socially structured populations. Our work bridges the gap between sexual selection research on social structure and IRI, and highlights future directions to study sexual selection in interacting communities.
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Affiliation(s)
- Grant C McDonald
- Department of Zoology, Edward Grey Institute, University of Oxford, Oxford, OX1 3PS, United Kingdom.,Department of Ecology, University of Veterinary Medicine Budapest, Budapest, 1077, Hungary
| | - Andy Gardner
- School of Biology, University of St. Andrews, St. Andrews, KY16 9TH, United Kingdom
| | - Tommaso Pizzari
- Department of Zoology, Edward Grey Institute, University of Oxford, Oxford, OX1 3PS, United Kingdom
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31
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Ehlers BK, Bilde T. Inclusive fitness, asymmetric competition and kin selection in plants. OIKOS 2019. [DOI: 10.1111/oik.06390] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Bodil K. Ehlers
- Section for Plant and Insect Ecology, Dept of Bioscience, Aarhus Univ Vejlsøvej 25, DK‐8600 Silkeborg Denmark
| | - Trine Bilde
- Section for Genetics and Evolution, Dept of Bioscience, Aarhus Univ Århus Denmark
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32
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Cerca J, Agudo AB, Castro S, Afonso A, Alvarez I, Torices R. Fitness benefits and costs of floral advertising traits: insights from rayed and rayless phenotypes of Anacyclus (Asteraceae). AMERICAN JOURNAL OF BOTANY 2019; 106:231-243. [PMID: 30801674 DOI: 10.1002/ajb2.1238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 12/06/2018] [Indexed: 06/09/2023]
Abstract
PREMISE OF THE STUDY Ray flowers commonly observed in daisies' flowering heads are a well-known example of advertising structures for enhancing pollinator attraction. Despite this, ray loss has occurred in multiple lineages, which still rely on pollinators, suggesting that rayless phenotypes could also be adaptive for animal-pollination. Here, we investigate the benefits and costs of these specialized floral advertising structures by comparing rayed and rayless phenotypes in two hybridizing closely related species. METHODS We assessed the advantages and costs of ray production in terms of floral visitor's attraction, pollen limitation, and female reproductive success using the broad natural variation on ray size and number at the contact zone of A. clavatus (rayed) and A. valentinus (rayless). In addition, we experimentally explored the effect of rays under controlled neighborhoods and the effect of ray removal on fruit production. KEY RESULTS In sympatry, rayed phenotypes attracted significantly more visitors than rayless plants, in which seed production was pollen limited. However, rayed phenotypes did not show higher fruit set or seed production than rayless phenotypes. Fruit set and seed production benefited from denser neighborhood displays and larger individual floral displays, respectively. The removal of ray florets did not appear to enable resource reallocation to fruit production. CONCLUSIONS Rayless heads compensated their lower visitation rate by means of a higher number of flowers per head achieving similar fecundity levels to rayed plants. The larger size of rayless heads might thus indicate an inflorescence-level trade-off between attraction and fertility.
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Affiliation(s)
- José Cerca
- Centre for Functional Ecology and Department of Life Sciences, University of Coimbra, Coimbra, Portugal
- Frontiers in Evolutionary Zoology research group, Natural History Museum, University of Oslo, Oslo, Norway
| | - Alicia B Agudo
- Departamento de Biodiversidad y Conservación, Real Jardín Botánico (RJB), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Sílvia Castro
- Centre for Functional Ecology and Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Ana Afonso
- Centre for Functional Ecology and Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Inés Alvarez
- Departamento de Biodiversidad y Conservación, Real Jardín Botánico (RJB), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Rubén Torices
- Centre for Functional Ecology and Department of Life Sciences, University of Coimbra, Coimbra, Portugal
- Department of Functional and Evolutionary Ecology, Estación Experimental de Zonas Áridas (EEZA), Consejo Superior de Investigaciones Científicas (CSIC), Almería, Spain
- Área de Biodiversidad y Conservación, Universidad Rey Juan Carlos, E-28933, Móstoles-Madrid, Spain
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Cuenot Y, Gómez JM, González‐Megias A, Pannell JR, Torices R. Characterization of microsatellite markers for Moricandia moricandioides (Brassicaceae) and related species. APPLICATIONS IN PLANT SCIENCES 2018; 6:e01172. [PMID: 30214835 PMCID: PMC6110244 DOI: 10.1002/aps3.1172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 07/24/2018] [Indexed: 06/08/2023]
Abstract
PREMISE OF THE STUDY Polymorphic microsatellite markers were developed to study population structure and mating patterns of the monocarpic herb Moricandia moricandioides (Brassicaceae). METHODS AND RESULTS Illumina MiSeq sequencing was used to develop a panel of 15 polymorphic microsatellite markers that were tested across 77 individuals from three populations on the Iberian Peninsula. All markers were polymorphic in at least two studied populations, and the number of alleles ranged from one to 11 per locus. The levels of observed and expected heterozygosity ranged from 0.000 to 1.000 and from 0.153 to 0.865, respectively. Nine and 11 loci were successfully amplified in the congeneric species M. arvensis and M. foetida, respectively. CONCLUSIONS The 15 microsatellite markers will be useful for population genetic studies of the genus Moricandia. These markers will serve as a useful tool for exploring population structure and mating patterns of M. moricandioides.
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Affiliation(s)
- Yves Cuenot
- Department of Ecology and EvolutionUniversité de LausanneCH‐1015LausanneSwitzerland
| | - José M. Gómez
- Estación Experimental de Zonas ÁridasConsejo Superior de Investigaciones CientíficasCtra. de Sacramento s/n, La Cañada de San UrbanoE‐04120AlmeríaSpain
| | | | - John R. Pannell
- Department of Ecology and EvolutionUniversité de LausanneCH‐1015LausanneSwitzerland
| | - Rubén Torices
- Department of Ecology and EvolutionUniversité de LausanneCH‐1015LausanneSwitzerland
- Estación Experimental de Zonas ÁridasConsejo Superior de Investigaciones CientíficasCtra. de Sacramento s/n, La Cañada de San UrbanoE‐04120AlmeríaSpain
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