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Bâ AM, Séne S, Manokari M, Galardis MMB, Sylla SN, Selosse MA, Shekhawat MS. Coccoloba uvifera L. associated with Scleroderma Bermudense Coker: a pantropical ectomycorrhizal symbiosis used in restoring of degraded coastal sand dunes. MYCORRHIZA 2024:10.1007/s00572-024-01170-8. [PMID: 39367926 DOI: 10.1007/s00572-024-01170-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 09/25/2024] [Indexed: 10/07/2024]
Abstract
Coccoloba uvifera L. (Polygonacaeae), named also seagrape, is an ectomycorrhizal (ECM) Caribbean beach tree, introduced pantropically for stabilizing coastal soils and producing edible fruits. This review covers the pantropical distribution and micropropagation of seagrape as well as genetic diversity, functional traits and use of ECM symbioses in response to salinity, both in its native regions and areas where it has been introduced. The ECM fungal diversity associated with seagrape was found to be relatively low in its region of origin, with Scleroderma bermudense Coker being the predominant fungal species. In regions of introduction, seagrape predominantly associated with Scleroderma species, whereas S. bermudense was exclusively identified in Réunion and Senegal. The introduction of S. bermudense is likely through spores adhering to the seed coats of seagrape, suggesting a vertical transmission of ECM colonization in seagrape by S. bermudense. This ECM fungus demonstrated its capacity to enhance salt tolerance in seagrape seedlings by reducing Na concentration and increasing K and Ca levels, consequently promoting higher K/Na and Ca/Na ratios in the tissues of ECM seedlings vs. non-ECM plants in nursery conditions. Moreover, the ECM symbiosis positively influenced growth, photosynthetic and transpiration rates, chlorophyll fluorescence and content, stomatal conductance, intercellular CO2, and water status, which improved the performance of ECM seagrape exposed to salt stress in planting conditions. The standardization of seagrape micropropagation emerges as a crucial tool for propagating homogeneous plant material in nursery and planting conditions. This review also explores the use of the ECM symbiosis between seagrape and S. bermudense as a strategy for restoring degraded coastal ecosystems in the Caribbean, Indian Ocean, and West African regions.
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Affiliation(s)
- A M Bâ
- Laboratoire de Biologie et Physiologie Végétales, Université des Antilles, Guadeloupe, France.
- Laboratoire des Symbioses Tropicales et Méditerranéennes UMR113, UM2/CIRAD, IRD/Sup-Agro, Montpellier, France.
- Académie Nationale des Sciences et Techniques du Sénégal, Dakar, Sénégal.
| | - S Séne
- Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, BP 1386, Dakar, Sénégal
| | - M Manokari
- Biotechnology Unit, Kanchi Mamunivar Government Institute for Postgraduate Studies and Research, Puducherry, India
| | - M M Bullaín Galardis
- Plant Biotechnology Studies Center, Faculty of Agricultural Sciences, University of Granma, Carretera Manzanillo, Bayamo, 85100, Cuba
| | - S N Sylla
- Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, BP 1386, Dakar, Sénégal
- Département de Biologie végétale, UCAD, Dakar, Sénégal
| | - M A Selosse
- Institut de Systématique, UMR 7205 - CNRS, MNHN, UPMC, EPHE, Muséum national d'Histoire naturelle, Sorbonne Universités, 57 rue Cuvier, Évolution, Biodiversité, Paris, 75005, France
- Faculty of Biology, Department of Plant Taxonomy and Nature Conservation, University of Gdańsk, ul. Wita Stwosza 59, Gdańsk, 80-308, Poland
- Institut Universitaire de France, Paris, France
| | - M S Shekhawat
- Biotechnology Unit, Kanchi Mamunivar Government Institute for Postgraduate Studies and Research, Puducherry, India
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Chaudhury R, Chakraborty A, Rahaman F, Sarkar T, Dey S, Das M. Mycorrhization in trees: ecology, physiology, emerging technologies and beyond. PLANT BIOLOGY (STUTTGART, GERMANY) 2024; 26:145-156. [PMID: 38194349 DOI: 10.1111/plb.13613] [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: 07/02/2023] [Accepted: 11/30/2023] [Indexed: 01/10/2024]
Abstract
Mycorrhization has been an integral part of plants since colonization by the early land plants. Over decades, substantial research has highlighted its potential role in improving nutritional efficiency and growth, development and survival of crop plants. However, the focus of this review is trees. Evidence have been provided to explain ecological and physiological significance of mycorrhization in trees. Advances in recent technologies (e.g., metagenomics, artificial intelligence, machine learning, agricultural drones) may open new windows to apply this knowledge in promoting tree growth in forest ecosystems. Dual mycorrhization relationships in trees and even triple relationships among trees, mycorrhizal fungi and bacteria offer an interesting physiological system to understand how plants interact with other organisms for better survival. Besides, studies indicate additional roles of mycorrhization in learning, memorizing and communication between host trees through a common mycorrhizal network (CMN). Recent observations in trees suggest that mycorrhization may even promote tolerance to multiple abiotic (e.g., drought, salt, heavy metal stress) and biotic (e.g. fungi) stresses. Due to the extent of physiological reliance, local adaptation of trees is heavily impacted by the mycorrhizal community. This knowledge opens the possibility of a non-GMO avenue to promote tree growth and development. Indeed, mycorrhization could impact growth of trees in nurserys and subsequent survival of the inoculated trees in field conditions. Future studies might integrate hyperspectral imaging and drone technologies to identify tree communities that are deficient in nitrogen and spray mycorrhizal spore formulations on them.
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Affiliation(s)
- R Chaudhury
- Department of Life Sciences, Presidency University, Kolkata, India
| | - A Chakraborty
- Department of Life Sciences, Presidency University, Kolkata, India
| | - F Rahaman
- Department of Life Sciences, Presidency University, Kolkata, India
| | - T Sarkar
- Department of Life Sciences, Presidency University, Kolkata, India
| | - S Dey
- Department of Life Sciences, Presidency University, Kolkata, India
| | - M Das
- Department of Life Sciences, Presidency University, Kolkata, India
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