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Plants
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Plant–Soil Feedbacks: Linking Ecosystem Ecology and Evolution
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Plant–Soil Feedbacks: Linking Ecosystem Ecology and Evolution

A special issue of Plants (ISSN 2223-7747).

Deadline for manuscript submissions: closed (20 October 2023) | Viewed by 4752

Special Issue Editor

Dr. Yanbao Lei

E-Mail Website
Guest Editor
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
Interests: ecosystem ecology; global change ecology

Special Issue Information

Dear Colleagues,

Plant—soil feedback (PSF) may change in strength over the life of individual plants as they continually modify the soil microbial community, which can be an important determinant of terrestrial plant diversity and powerful driver of vegetation dynamics. Plants elicit changes in the soil microbiome that either promote or suppress conspecifics, thereby regulating population density dependence and species co-existence. However, the factors regulating plant–soil feedback, which varies from positive to negative among plant species, remain unclear. A challenge in research is to determine how the strength and direction of plant–soil feedback depend on traits such as the nutrient acquisition strategy and how such feedback contributes to the maintenance of plant diversity. However, many mechanisms are investigated in isolation, and yet no single mechanism is likely to be completely responsible for PSF as these processes can interact. Further, the outcome depends on which resources are limiting and the other plants and soil biota in the surrounding environment.

Thus, understanding the mechanisms of PSF and its role within plant communities requires quantification of the interactions among the processes influencing PSF and the associated abiotic and biotic contexts.

Dr. Yanbao Lei
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Plants is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • plant—soil interactions
  • root exudates
  • mycorrhizas
  • nutrient acquisition and depletion
  • population dynamics

Published Papers (3 papers)

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Research

12 pages, 5634 KiB  
Article
Contrasting Responses and Phytoremediation Potential of Two Poplar Species to Combined Strontium and Diesel Oil Stress
by Ziyan Liang, Hanyong Zeng and Jijun Kong
Plants 2023, 12(11), 2145; https://doi.org/10.3390/plants12112145 - 29 May 2023
Cited by 3 | Viewed by 988
Abstract
The soil pollution caused by diesel oil and heavy metals has become an increasingly serious environmental issue, with negative global-scale impacts. The remediation of contaminated soil requires special attention, in which phytoremediation has emerged as an ecofriendly solution. However, the response of plants [...] Read more.
The soil pollution caused by diesel oil and heavy metals has become an increasingly serious environmental issue, with negative global-scale impacts. The remediation of contaminated soil requires special attention, in which phytoremediation has emerged as an ecofriendly solution. However, the response of plants to the combined stress of diesel oil and heavy metals remains largely unknown. In this study, the aim was to investigate the potential of Populus alba and P. russkii for phytoremediation by examining their response to combined diesel oil and heavy metal stress. In a greenhouse experiment using soil contaminated with 15 mg kg−1 of diesel oil and varying concentrations of Sr (0, 10, or 100 mg kg−1), we studied the physiological and biochemical changes, as well as the Sr absorption, of P. alba and P. russkii. The results showed that at high concentrations of Sr and diesel oil, the growth of both species was substantially inhibited, but P. alba exhibited higher resistance due to its higher antioxidant enzyme activities and increased accumulation of soluble sugar and proline. Additionally, P. alba concentrated Sr in the stem, whereas P. russkii accumulated Sr in the leaf, exacerbating its negative effects. Diesel oil treatments were beneficial for Sr extraction due to cross-tolerance. Our findings indicate that P. alba is more suitable for the phytoremediation of Sr contamination due to its superior tolerance to combined stress, and we identified potential biomarkers for monitoring pollution. Therefore, this study provides a theoretical basis and implementation strategy for the remediation of soil contaminated by both heavy metals and diesel oil. Full article
(This article belongs to the Special Issue Plant–Soil Feedbacks: Linking Ecosystem Ecology and Evolution)
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14 pages, 1979 KiB  
Article
Nitrogen Preference of Dominant Species during Hailuogou Glacier Retreat Succession on the Eastern Tibetan Plateau
by Yulin Huang, Liushan Du, Yanbao Lei and Jiye Liang
Plants 2023, 12(4), 838; https://doi.org/10.3390/plants12040838 - 13 Feb 2023
Cited by 2 | Viewed by 1126
Abstract
Plant nitrogen (N) uptake preference is a key factor affecting plant nutrient acquisition, vegetation composition and ecosystem function. However, few studies have investigated the contribution of different N sources to plant N strategies, especially during the process of primary succession of a glacial [...] Read more.
Plant nitrogen (N) uptake preference is a key factor affecting plant nutrient acquisition, vegetation composition and ecosystem function. However, few studies have investigated the contribution of different N sources to plant N strategies, especially during the process of primary succession of a glacial retreat area. By measuring the natural abundance of N isotopes (δ15N) of dominant plants and soil, we estimated the relative contribution of different N forms (ammonium-NH4+, nitrate-NO3− and soluble organic N-DON) and absorption preferences of nine dominant plants of three stages (12, 40 and 120 years old) of the Hailuogou glacier retreat area. Along with the chronosequence of primary succession, dominant plants preferred to absorb NO3− in the early (73.5%) and middle (46.5%) stages. At the late stage, soil NH4+ contributed more than 60.0%, In addition, the contribution of DON to the total N uptake of plants was nearly 19.4%. Thus, the dominant plants’ preference for NO3− in the first two stages changes to NH4+ in the late stages during primary succession. The contribution of DON to the N source of dominant plants should not be ignored. It suggests that the shift of N uptake preference of dominant plants may reflect the adjustment of their N acquisition strategy, in response to the changes in their physiological traits and soil nutrient conditions. Better knowledge of plant preferences for different N forms could significantly improve our understanding on the potential feedbacks of plant N acquisition strategies to environmental changes, and provide valuable suggestions for the sustainable management of plantations during different successional stages. Full article
(This article belongs to the Special Issue Plant–Soil Feedbacks: Linking Ecosystem Ecology and Evolution)
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15 pages, 6634 KiB  
Article
Effects of Arbuscular Mycorrhizal Fungi on Alleviating Cadmium Stress in Medicago truncatula Gaertn
by Wanting Li, Ke Chen, Qiong Li, Yunlai Tang, Yuying Jiang and Yu Su
Plants 2023, 12(3), 547; https://doi.org/10.3390/plants12030547 - 25 Jan 2023
Cited by 8 | Viewed by 2106
Abstract
Heavy metal contamination is a global problem for ecosystems and human health. Remediation of contaminated soils has received much attention in the last decade. Aided mitigation of heavy metal phytotoxicity by arbuscular mycorrhizal fungi (AMF) is a cost-effective and environmentally friendly strategy. This [...] Read more.
Heavy metal contamination is a global problem for ecosystems and human health. Remediation of contaminated soils has received much attention in the last decade. Aided mitigation of heavy metal phytotoxicity by arbuscular mycorrhizal fungi (AMF) is a cost-effective and environmentally friendly strategy. This study was carried out to investigate the mitigation effect of AMF inoculation on heavy metal toxicity in Medicago truncatula under soil cadmium stress. Therefore, a pot experiment was designed to evaluate the growth, chlorophyll fluorescence, Cd uptake and distribution, malondialdehyde (MDA) content, root soil physicochemical properties, and metabolite profile analysis of M. truncatula with/without AMF inoculation in Cd (20 mg/Kg)-contaminated soil. The results showed that inoculating AMF under Cd stress might enhance photosynthetic efficiency, increase plant biomass, decrease Cd and MDA content, and improve soil physicochemical properties in M. truncatula. Non-targeted metabolite analysis revealed that inoculation with AMF under Cd stress significantly upregulated the production of various amino acids in inter-root metabolism and increase organic acid and phytohormone synthesis. This study provides information on the physiological responses of mycorrhizal plants to heavy metal stress, which could help provide deeper insight into the mechanisms of heavy metal remediation by AMF. Full article
(This article belongs to the Special Issue Plant–Soil Feedbacks: Linking Ecosystem Ecology and Evolution)
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