Root endophytes improve physiological performance and yield in crops under salt stress by up-regulating the foliar sodium concentration

Molina‐Montenegro, Marco A.; Acuña‐Rodríguez, Ian S.; Torres-Díaz, Cristián; Gundel, Pedro E.

doi:10.1101/435032

Cited by 7 publications

(11 citation statements)

References 64 publications

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“…An increase in NPQ can limit quantum yield (Baker 2008) but ENC plants are reported to have lower NPQ, therefore symbiosis enhances photosynthetic efficiency by proficient conversion of harvested light into chemical energy and minimizing NPQ (Pehlivan et al 2017). Endophytic fungi are also known to reinforce these mechanisms and reduce the negative effects of salinity on plant photosynthetic capacity (Jogawat et al 2013;Molina-Montenegro et al 2018). Table 4 lists some of the studies in the last decade on effect of salinity and endophytes on photosynthesis in plants.…”

Section: Photosynthesismentioning

confidence: 99%

Alleviation of salinity stress in plants by endophytic plant-fungal symbiosis: Current knowledge, perspectives and future directions

et al. 2020

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Salinization of soil with sodium chloride ions inhibits plant functions, causing reduction of yield of crops. Salt tolerant microorganisms have been studied to enhance crop growth under salinity. This review describes the performance of endophytic fungi applied to crops as a supplement to plant genetics or soil management to alleviate salt stress in crops. This is achieved via inducing systemic resistance, increasing the levels of beneficial metabolites, activating antioxidant systems to scavenge ROS, and modulating plant growth phytohormones. Colonization by endophytic fungi improves nutrient uptake and maintains ionic homeostasis by modulating ion accumulation, thereby restricting the transport of Na + to leaves and ensuring a low cytosolic Na + :K + ratio in plants. Participating endophytic fungi enhance transcripts of genes encoding the high Affinity Potassium Transporter 1 (HKT1) and the inwardrectifying K + channels KAT1 and KAT2, which play key roles in regulating Na + and K + homeostasis. Endophytic-induced interplay of strigolactones play regulatory roles in salt tolerance by interacting with phytohormones. Future research requires further attention on the biochemical, molecular and genetic mechanisms crucial for salt stress resistance requires further attention for future research. Furthermore, to design strategies for sustained plant health with endophytic fungi, a new wave of exploration of plant-endophyte responses to combinations of stresses is mandatory.

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Section: Photosynthesismentioning

confidence: 99%

Alleviation of salinity stress in plants by endophytic plant-fungal symbiosis: Current knowledge, perspectives and future directions

et al. 2020

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“…In addition, there is compelling evidence of fungal microbiome components contributing to plant adaptation to salinity. For example, some strains of Epichloë, Diaporthe, Piriformospora, Penicillium, Fusarium, and DSE have been reported to improve plant growth under salinity (Waller et al, 2005;Rodriguez et al, 2008;Molina-Montenegro et al, 2018;Pereira et al, 2019;Gonzalez Mateu et al, 2020;Wang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

The Role of Fungal Microbiome Components on the Adaptation to Salinity of Festuca rubra subsp. pruinosa

et al. 2021

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Festuca rubra subsp. pruinosa is a perennial grass that inhabits sea cliffs, a habitat where salinity and low nutrient availability occur. These plants have a rich fungal microbiome, and particularly common are their associations with Epichloë festucae in aboveground tissues and with Fusarium oxysporum and Periconia macrospinosa in roots. In this study, we hypothesized that these fungi could affect the performance of F. rubra plants under salinity, being important complements for plant habitat adaptation. Two lines of F. rubra, each one consisting of Epichloë-infected and Epichloë-free clones, were inoculated with the root endophytes (F. oxysporum and P. macrospinosa) and subjected to a salinity treatment. Under salinity, plants symbiotic with Epichloë had lower Na+ content than non-symbiotic plants, but this effect was not translated into plant growth. P. macrospinosa promoted leaf and root growth in the presence and absence of salinity, and F. oxysporum promoted leaf and root growth in the presence and absence of salinity, plus a decrease in leaf Na+ content under salinity. The growth responses could be due to functions related to improved nutrient acquisition, while the reduction of Na+ content might be associated with salinity tolerance and plant survival in the long term. Each of these three components of the F. rubra core mycobiome contributed with different functions, which are beneficial and complementary for plant adaptation to its habitat in sea cliffs. Although our results do not support an obvious role of Epichloë itself in FRP salt tolerance, there is evidence that Epichloë can interact with root endophytes, affecting host plant performance.

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“…Plants inoculated with endophytes had an enhanced expression NHX1 gene related to salt tolerance which, in turn, regulates iron homeostasis. Inoculated plants had better osmotic tolerance under salinity stress by maintaining a higher Na + level in leaves (Molina-Montenegro et al, 2018).…”

Section: Endophytic Fungi-mediated Salinity Stress Tolerancementioning

confidence: 99%

“…In summary, endophytic fungi help plants to cope with salt stress through the production of phytohormones and activating antioxidant defense mechanisms of the host (Khan et al, 2011;Radhakrishnan et al, 2013;Baltruschat et al, 2008). It is also shown to improve the ecophysiological performance such as plant water status and gas exchange characteristics of the host under saline conditions (Ghorbani et al, 2018;Molina-Montenegro et al, 2018).…”

Section: Possible Mechanism Of Salt Tolerance By Endophytesmentioning

confidence: 99%

Future of Sustainable Agriculture in Saline Environments

Negacz

Vellinga²,

Barrett-Lennard

et al. 2021

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Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint.The Open Access version of this book, available at www.taylorfrancis.com, has been made available under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license Trademark notice: Product or corporate names may be trademarks or registered trademarks and are used only for identification and explanation without intent to infringe.

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Root endophytes improve physiological performance and yield in crops under salt stress by up-regulating the foliar sodium concentration

Cited by 7 publications

References 64 publications

Alleviation of salinity stress in plants by endophytic plant-fungal symbiosis: Current knowledge, perspectives and future directions

Alleviation of salinity stress in plants by endophytic plant-fungal symbiosis: Current knowledge, perspectives and future directions

The Role of Fungal Microbiome Components on the Adaptation to Salinity of Festuca rubra subsp. pruinosa

Future of Sustainable Agriculture in Saline Environments

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