The effects of ectomycorrhizal inoculation on survival and growth of Pinus thunbergii seedlings planted in saline soil

Wen, Zhugui; Xing, Jin-Cheng; Liu, Chong; Zhu, Xike; Zhao, Baoquan; Dong, Jing; He, Ting; Xian-qing, Zhao; Li, Hong

doi:10.1007/s13199-021-00825-w

Cited by 8 publications

(3 citation statements)

References 57 publications

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“…100 mM of NaCl) on root growth has been observed previously in P. taeda (Domec et al, 2021; Poulter et al, 2008) in field or greenhouse experiments where tree roots are likely to be associated with naturally occurring ECM fungi in soil or nursery media. For other pine species, such as Pinus banksiana (Bois, Bigras, et al, 2006; Franklin & Zwiazek, 2004) and Pinus thunbergii (Wen et al, 2022), experiments conducted under laboratory‐controlled conditions or greenhouse trials with non‐mycorrhizal controls showed similar salinity response thresholds. However, some degree of tolerance has been described at moderate salinity (approximately 60–100 mM of NaCl) in non‐mycorrhizal P. banksiana (Calvo Polanco et al, 2009), and P. pinea grown in hydroponic culture (Khaldi et al, 2011).…”

Section: Discussionmentioning

confidence: 95%

The ectomycorrhizal fungus Paxillus ammoniavirescens influences the effects of salinity on loblolly pine in response to potassium availability

Rose,

Dellinger,

Larmour

et al. 2024

Environmental Microbiology

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Salinity is an increasing problem in coastal areas affected by saltwater intrusion, with deleterious effects on tree health and forest growth. Ectomycorrhizal (ECM) fungi may improve the salinity tolerance of host trees, but the impact of external potassium (K+) availability on these effects is still unclear. Here, we performed several experiments with the ECM fungus Paxillus ammoniavirescens and loblolly pine (Pinus taeda L.) in axenic and symbiotic conditions at limited or sufficient K+ and increasing sodium (Na+) concentrations. Growth rate, biomass, nutrient content, and K+ transporter expression levels were recorded for the fungus, and the colonization rate, root development parameters, biomass, and shoot nutrient accumulation were determined for mycorrhizal and non‐mycorrhizal plants. P. ammoniavirescens was tolerant to high salinity, although growth and nutrient concentrations varied with K+ availability and increasing Na+ exposure. While loblolly pine root growth and development decreased with increasing salinity, ECM colonization was unaffected by pine response to salinity. The mycorrhizal influence on loblolly pine salinity response was strongly dependent on external K+ availability. This study reveals that P. ammoniavirescens can reduce Na+ accumulation of salt‐exposed loblolly pine, but this effect depends on external K+ availability.

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Section: Discussionmentioning

confidence: 95%

The ectomycorrhizal fungus Paxillus ammoniavirescens influences the effects of salinity on loblolly pine in response to potassium availability

Rose,

Dellinger,

Larmour

et al. 2024

Environmental Microbiology

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“…Jany et al found that C. geophilum is able to maintain the water conditions of Beech rhizosphere soil facing drought stress [ 37 ]. Under salt stress, the inoculation of C. geophilum could increase the biomass of Pinus thunbergii seedlings and the nutrient elements in shoots [ 38 , 39 ]. Therefore, C. geophilum can be used as a reliable inoculation source for cultivating drought-tolerant mycorrhizal seedlings.…”

Section: Introductionmentioning

confidence: 99%

The Transcriptional Responses of Ectomycorrhizal Fungus, Cenococcum geophilum, to Drought Stress

Yuan²,

Zhang³

et al. 2022

JoF

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With global warming, drought has become one of the major environmental pressures that threaten the development of global agricultural and forestry production. Cenococcum geophilum (C. geophilum) is one of the most common ectomycorrhizal fungi in nature, which can form mycorrhiza with a large variety of host trees of more than 200 tree species from 40 genera of both angiosperms and gymnosperms. In this study, six C. geophilum strains with different drought tolerance were selected to analyze their molecular responses to drought stress with treatment of 10% polyethylene glycol. Our results showed that drought-sensitive strains absorbed Na and K ions to regulate osmotic pressure and up-regulated peroxisome pathway genes to promote the activity of antioxidant enzymes to alleviate drought stress. However, drought-tolerant strains responded to drought stress by up-regulating the functional genes involved in the ubiquinone and other terpenoid-quinone biosynthesis and sphingolipid metabolism pathways. The results provided a foundation for studying the mechanism of C. geophilum response to drought stress.

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“…Moreover, ECMF symbiosis is generally recognized to have many benefits to forest ecosystems [ 7 ], such as maintaining the diversity of forest species and helping plants against abiotic and biotic stresses. At present, the use of ectomycorrhizal symbiosis with trees to enhance the resistance of forests to abiotic stresses has attracted worldwide attention [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of High Temperature-Triggered Transcriptomics on the Physiological Adaptability of Cenococcum geophilum, an Ectomycorrhizal Fungus

et al. 2022

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High temperature stress caused by global warming presents a challenge to the healthy development of forestry. Cenococcum geophilum is a common ectomycorrhizal fungus (ECMF) in the forest system and has become an important fungus resource with application potential in forest vegetation restoration. In this study, three sensitive isolates of C. geophilum (ChCg01, JaCg144 and JaCg202) and three tolerant isolates of C. geophilum (ACg07, ChCg28 and ChCg100) were used to analyze the physiological and molecular responses to high temperature. The results showed that high temperature had a significant negative effect on the growth of sensitive isolates while promoting the growth of tolerant isolates. The antioxidative enzymes activity of C. geophilum isolates increased under high temperature stress, and the SOD activity of tolerant isolates (A07Cg and ChCg100) was higher than that of sensitive isolates (ChCg01 and JaCg202) significantly. The tolerant isolates secreted more succinate, while the sensitive isolates secreted more oxalic acid under high temperature stress. Comparative transcriptomic analysis showed that differentially expressed genes (DEGs) of six C. geophilum isolates were significantly enriched in “antioxidant” GO entry in the molecular. In addition, the “ABC transporters” pathway and the “glyoxylate and dicarboxylic acid metabolic” were shared in the three tolerant isolates and the three sensitive isolates, respectively. These results were further verified by RT-qPCR analysis. In conclusion, our findings suggest that C. geophilum can affect the organic acid secretion and increase antioxidant enzyme activity in response to high temperature by upregulating related genes.

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The effects of ectomycorrhizal inoculation on survival and growth of Pinus thunbergii seedlings planted in saline soil

Cited by 8 publications

References 57 publications

The ectomycorrhizal fungus Paxillus ammoniavirescens influences the effects of salinity on loblolly pine in response to potassium availability

The ectomycorrhizal fungus Paxillus ammoniavirescens influences the effects of salinity on loblolly pine in response to potassium availability

The Transcriptional Responses of Ectomycorrhizal Fungus, Cenococcum geophilum, to Drought Stress

Effects of High Temperature-Triggered Transcriptomics on the Physiological Adaptability of Cenococcum geophilum, an Ectomycorrhizal Fungus

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