Cited by 1,083Mycorrhizal Fungi and Plant InteractionsPlant Stress Responses and TolerancePlant-Microbe Interactions and Immunity

Arbuscular mycorrhizal fungi in alleviation of salt stress: a review

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Evelin, Heikham, Kapoor, Rupam, Giri, Bhoopander·2009·Annals of Botany

Abstract

BACKGROUND: Salt stress has become a major threat to plant growth and productivity. Arbuscular mycorrhizal fungi colonize plant root systems and modulate plant growth in various ways. SCOPE: This review addresses the significance of arbuscular mycorrhiza in alleviation of salt stress and their beneficial effects on plant growth and productivity. It also focuses on recent progress in unravelling biochemical, physiological and molecular mechanisms in mycorrhizal plants to alleviate salt stress. CONCLUSIONS: The role of arbuscular mycorrhizal fungi in alleviating salt stress is well documented. This paper reviews the mechanisms arbuscular mycorrhizal fungi employ to enhance the salt tolerance of host plants such as enhanced nutrient acquisition (P, N, Mg and Ca), maintenance of the K(+) : Na(+) ratio, biochemical changes (accumulation of proline, betaines, polyamines, carbohydrates and antioxidants), physiological changes (photosynthetic efficiency, relative permeability, water status, abscissic acid accumulation, nodulation and nitrogen fixation), molecular changes (the expression of genes: PIP, Na(+)/H(+) antiporters, Lsnced, Lslea and LsP5CS) and ultra-structural changes. Theis review identifies certain lesser explored areas such as molecular and ultra-structural changes where further research is needed for better understanding of symbiosis with reference to salt stress for optimum usage of this technology in the field on a large scale. This review paper gives useful benchmark information for the development and prioritization of future research programmes.

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  • Microorganisms, and especially mycorrhiza, play crucial roles in plant resistance to drought and osmotic stress and the tolerance against episodes of freezing and thawing.

    “Microorganisms, and especially mycorrhiza, also play crucial roles in plant resistance to drought and osmotic stress and the tolerance against episodes of freezing and thawing.”
  • Established mechanisms include the mycelium, which has a smaller diameter than root hairs and therefore better access to bound water, and various mechanisms protecting the mycorrhizal fungus from osmotic stress, such as accumulation of osmolytes, surface hydrophobicity and bacterial secretion of exopolysaccharides.

    “Established mechanisms include the mycelium, which has a smaller diameter than root hairs and therefore better access to bound water (Lehto and Zwiazek, 2011) and various mechanisms protecting the mycorrhizal fungus (and therefore also the plant root) from osmotic stress, such as accumulation of osmolytes (mannitol, trehalose); surface hydrophobicity and bacterial secretion of exopolysaccharides (”

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Research works printed but not linked: 7

  1. Bhaskaran C, Selvaraj T. 1997. Seasonal incidence and distribution of VAM fungi in native saline soils. Journal of Environmental Biology 18: 209-212.
  2. El-Desouky SA, Atawia AAR. 1998. Growth perfomance of citrus rootstocks under saline conditions. Alexandria Journal of Agricultural Research 43: 231-254.
  3. Møller IM. 2001. Plant mitochondria and oxidative stress: electron transport, NADPH turnover, and metabolism of reactive oxygen species. Annual Review of Plant Physiology and Plant Molecular Biology 52: 561 -591.
  4. Nemec S. 1981. Histochemical characterization of Glomus etunicatum infec- tion of Citrus limon roots. Canadian Journal of Botany 59: 609-617.
  5. Smith SE, Read DJ. 1995. Mycorrhizal symbiosis. New York, NY: Academic Press, 105-160.
  6. Thanna E, Nawar A. 1994. Salinity and mycorrhizal association in relation to carbohydrate status, leaf chlorophyll and activity of peroxidase and poly- phenol oxidase enzymes in sour orange seedlings. Alexandria Journal of Agricultural Research 39: 263-280.
  7. Tinker PB. 1975. Soil chemistry of phosphorus and mycorrhizal effects on plant growth. In: Sanders FE, Mosse B, Tinker PB. eds.Endomycorrhizas. London: Academic Press, 353-371.

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Authors
Evelin, H., Kapoor, R., & Giri, B.
Affiliations
University of Delhi (IN)
Venue
Annals of Botany
Published
2009-10-08
Volume
104
Issue
7
Pages
1263-1280
ISSN
  • 0305-7364 (ISSN-L)
  • 1095-8290
OpenAlex
W2131136324
Cited by
1,083
References
219
Citations by year
2026: 43 · 2025: 52 · 2024: 67 · 2023: 70 · 2022: 74 · 2021: 94 · 2020: 102 · 2019: 94 · 2018: 73 · 2017: 89 · 2016: 61 · 2015: 51 · 2014: 65 · 2013: 60 · 2012: 40
FWCI
2.47
Type
journal article
Language
en
Open access
Locations
  • Annals of Botany (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Council of Scientific and Industrial Research, India
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Mycorrhizal Fungi and Plant Interactions
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
Keywords
arbuscular mycorrhizal fungi, salt stress, salt tolerance, plant-microbe symbiosis, nutrient acquisition, Na+/K+ ratio, proline accumulation, betaine, polyamines, antioxidants, photosynthetic efficiency, water status, abscisic acid, nodulation, nitrogen fixation, PIP aquaporins, Na+/H+ antiporter, gene expression
MeSH terms
Sodium Chloride, Soil Microbiology, Stress, Physiological, Sodium-Hydrogen Exchangers, Magnoliopsida, Mycorrhizae, Salinity

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