Pisolithus microcarpus isolates with contrasting abilities to colonise Eucalyptus grandis exhibit significant differences in metabolic signalling.
Vishwakarma, K., Buckley, S., Plett, J. M., Lundberg-Felten, J., Jämtgård, S., & Plett, K. L.
Fungal Biology, 128(7): 2157–2166. November 2024.
Paper
doi
link
bibtex
abstract
@article{vishwakarma_pisolithus_2024,
title = {\textit{{Pisolithus} microcarpus} isolates with contrasting abilities to colonise \textit{{Eucalyptus} grandis} exhibit significant differences in metabolic signalling},
volume = {128},
issn = {1878-6146},
url = {https://www.sciencedirect.com/science/article/pii/S1878614624001247},
doi = {10.1016/j.funbio.2024.09.001},
abstract = {Biotic factors in fungal exudates impact plant-fungal symbioses establishment. Mutualistic ectomycorrhizal fungi play various ecological roles in forest soils by interacting with trees. Despite progress in understanding secreted fungal signals, dynamics of signal production in situ before or during direct host root contact remain unclear. We need to better understand how variability in intra-species fungal signaling at these stages impacts symbiosis with host tissues. Using the ECM model Pisolithus microcarpus, we selected two isolates (Si9 and Si14) with different abilities to colonize Eucalyptus grandis roots. Hypothesizing that distinct early signalling and metabolite profiles between these isolates would influence colonization and symbiosis, we used microdialysis to non-destructively collect secreted metabolites from either the fungus, host, or both, capturing the dynamic interplay of pre-symbiotic signalling over 48 hours. Our findings revealed significant differences in metabolite profiles between Si9 and Si14, grown alone or with a host root. Si9, with lower colonization efficiency than Si14, secreted a more diverse range of compounds, including lipids, oligopeptides, and carboxylic acids. In contrast, Si14's secretions, similar to the host's, included more aminoglycosides. This study emphasizes the importance of intra-specific metabolomic diversity in ectomycorrhizal fungi, suggesting that early metabolite secretion is crucial for establishing successful mutualistic relationships.},
number = {7},
urldate = {2024-10-11},
journal = {Fungal Biology},
author = {Vishwakarma, Kanchan and Buckley, Scott and Plett, Jonathan M. and Lundberg-Felten, Judith and Jämtgård, Sandra and Plett, Krista L.},
month = nov,
year = {2024},
keywords = {Ectomycorrhizal fungi, Eucalyptus, Indirect contact, Isolates, Metabolites, Microdialysis system},
pages = {2157--2166},
}
Biotic factors in fungal exudates impact plant-fungal symbioses establishment. Mutualistic ectomycorrhizal fungi play various ecological roles in forest soils by interacting with trees. Despite progress in understanding secreted fungal signals, dynamics of signal production in situ before or during direct host root contact remain unclear. We need to better understand how variability in intra-species fungal signaling at these stages impacts symbiosis with host tissues. Using the ECM model Pisolithus microcarpus, we selected two isolates (Si9 and Si14) with different abilities to colonize Eucalyptus grandis roots. Hypothesizing that distinct early signalling and metabolite profiles between these isolates would influence colonization and symbiosis, we used microdialysis to non-destructively collect secreted metabolites from either the fungus, host, or both, capturing the dynamic interplay of pre-symbiotic signalling over 48 hours. Our findings revealed significant differences in metabolite profiles between Si9 and Si14, grown alone or with a host root. Si9, with lower colonization efficiency than Si14, secreted a more diverse range of compounds, including lipids, oligopeptides, and carboxylic acids. In contrast, Si14's secretions, similar to the host's, included more aminoglycosides. This study emphasizes the importance of intra-specific metabolomic diversity in ectomycorrhizal fungi, suggesting that early metabolite secretion is crucial for establishing successful mutualistic relationships.
Cell adhesion maintenance and controlled separation in plants.
Baba, A. I., & Verger, S.
Frontiers in Plant Physiology, 2. February 2024.
Publisher: Frontiers
Paper
doi
link
bibtex
abstract
@article{baba_cell_2024,
title = {Cell adhesion maintenance and controlled separation in plants},
volume = {2},
issn = {2813-821X},
url = {https://www.frontiersin.org/journals/plant-physiology/articles/10.3389/fphgy.2024.1369575/full},
doi = {10.3389/fphgy.2024.1369575},
abstract = {{\textless}p{\textgreater}Cell-cell adhesion is a fundamental aspect of maintaining multicellular integrity while ensuring controlled cell and organ shedding, intercellular space formation and intrusive growth. Understanding of the precise mechanisms governing regulated cell separation, such as abscission, considerably progressed in recent decades. However, our comprehension of how plants maintain adhesion within tissues in which it is essential remains limited. Here we review some of the well-established knowledge along with latest discoveries that lead us to rethink the way developmentally controlled cell separation and adhesion maintenance may work. We also specifically explore the relationship between growth and adhesion, highlighting their similarities and coupling, and propose a plausible framework in which growth and adhesion are tightly co-regulated.{\textless}/p{\textgreater}},
language = {English},
urldate = {2024-10-09},
journal = {Frontiers in Plant Physiology},
author = {Baba, Abu Imran and Verger, Stéphane},
month = feb,
year = {2024},
note = {Publisher: Frontiers},
keywords = {Abscission, Adhesion, Cell Wall, Growth, SEPARATION},
}
\textlessp\textgreaterCell-cell adhesion is a fundamental aspect of maintaining multicellular integrity while ensuring controlled cell and organ shedding, intercellular space formation and intrusive growth. Understanding of the precise mechanisms governing regulated cell separation, such as abscission, considerably progressed in recent decades. However, our comprehension of how plants maintain adhesion within tissues in which it is essential remains limited. Here we review some of the well-established knowledge along with latest discoveries that lead us to rethink the way developmentally controlled cell separation and adhesion maintenance may work. We also specifically explore the relationship between growth and adhesion, highlighting their similarities and coupling, and propose a plausible framework in which growth and adhesion are tightly co-regulated.\textless/p\textgreater
Influence of TEMPO on preparation of softwood nanofibrils and their hydrogel network properties.
Baş, Y., Berglund, L., Stevanic, J. S., Scheepers, G., Niittylä, T., & Oksman, K.
Carbohydrate Polymers,122812. September 2024.
Paper
doi
link
bibtex
abstract
@article{bas_influence_2024,
title = {Influence of {TEMPO} on preparation of softwood nanofibrils and their hydrogel network properties},
issn = {0144-8617},
url = {https://www.sciencedirect.com/science/article/pii/S0144861724010385},
doi = {10.1016/j.carbpol.2024.122812},
abstract = {From an economic and environmental perspective, the use of less chemicals in the production of cellulose nanofibrils (CNFs) is advantageous. In this study, we investigated the oxidation (TEMPO/NaClO2/NaClO, pH 6.8) of softwood (SW) particles with varying amounts of TEMPO (16, 8 or 0 mg g−1 of wood). Following, TEMPO-oxidized SW nanofibrils (TO-SWNFs) were obtained by nanofibrillation and their size, morphology, and crystallite size were assessed. Hydrogel networks of TO-SWNFs were prepared and mechanical properties were measured in dH2O and phosphate buffered saline (PBS) to compare their performance for possible biomedical applications such as wound dressings. The results reveal that the presence of TEMPO is of importance for TO-SWNF network properties, presenting higher eq. H2O absorption (≈2500 \%) and elongation at break (≈10 \%) with good wet strength (≈180 kPa). In addition, a decrease in use of TEMPO catalyst from 16 to 8 mg g−1 of wood is possible, without detrimental effects on hydrogel network properties (dH2O absorption ≈ 2000 \%, elongation at break ≈ 13 \%, wet strength ≈ 190 kPa) related to applications as wound dressings.},
urldate = {2024-10-08},
journal = {Carbohydrate Polymers},
author = {Baş, Yağmur and Berglund, Linn and Stevanic, Jasna S. and Scheepers, Gerhard and Niittylä, Totte and Oksman, Kristiina},
month = sep,
year = {2024},
keywords = {Absorption, Cellulose nanofibrils, Hydrogel network, TEMPO-oxidation, Wood},
pages = {122812},
}
From an economic and environmental perspective, the use of less chemicals in the production of cellulose nanofibrils (CNFs) is advantageous. In this study, we investigated the oxidation (TEMPO/NaClO2/NaClO, pH 6.8) of softwood (SW) particles with varying amounts of TEMPO (16, 8 or 0 mg g−1 of wood). Following, TEMPO-oxidized SW nanofibrils (TO-SWNFs) were obtained by nanofibrillation and their size, morphology, and crystallite size were assessed. Hydrogel networks of TO-SWNFs were prepared and mechanical properties were measured in dH2O and phosphate buffered saline (PBS) to compare their performance for possible biomedical applications such as wound dressings. The results reveal that the presence of TEMPO is of importance for TO-SWNF network properties, presenting higher eq. H2O absorption (≈2500 %) and elongation at break (≈10 %) with good wet strength (≈180 kPa). In addition, a decrease in use of TEMPO catalyst from 16 to 8 mg g−1 of wood is possible, without detrimental effects on hydrogel network properties (dH2O absorption ≈ 2000 %, elongation at break ≈ 13 %, wet strength ≈ 190 kPa) related to applications as wound dressings.
Adventitious Root Development in Dicotyledons.
Mishra, P., Kidwai, M., Lakehal, A., & Bellini, C.
In
Plant Roots. CRC Press, 5 edition, 2024.
Num Pages: 13
link
bibtex
abstract
@incollection{mishra_adventitious_2024,
edition = {5},
title = {Adventitious {Root} {Development} in {Dicotyledons}},
isbn = {978-1-00-332494-2},
abstract = {The plant's root system is comprised of primary, lateral, and adventitious roots (ARs). Lateral roots emerge exclusively from existing roots, whereas ARs originate from stem- or leaf-derived cells. The progression of adventitious root development is a natural part of a plant's growth, commonly observed in most monocotyledonous species where they establish the primary root system or in various dicotyledonous plants that reproduce vegetatively. Adventitious rooting holds particular significance in the propagation of economically valuable horticultural and woody species, enabling the cloning of plants and swift establishment of superior genotypes before integrating them into production or breeding schemes. The process of AR development is intricate and influenced by numerous intrinsic and environmental factors, encompassing phytohormones, light exposure, nutritional state, stress responses like injury, and genetic traits. This chapter provides an overview of the latest advancements in research concerning adventitious root formation, with a specific focus on the interplay of key hormones and their interactions, as well as the influence of light, a significant environmental factor.},
booktitle = {Plant {Roots}},
publisher = {CRC Press},
author = {Mishra, Priyanka and Kidwai, Maria and Lakehal, Abdellah and Bellini, Catherine},
year = {2024},
note = {Num Pages: 13},
}
The plant's root system is comprised of primary, lateral, and adventitious roots (ARs). Lateral roots emerge exclusively from existing roots, whereas ARs originate from stem- or leaf-derived cells. The progression of adventitious root development is a natural part of a plant's growth, commonly observed in most monocotyledonous species where they establish the primary root system or in various dicotyledonous plants that reproduce vegetatively. Adventitious rooting holds particular significance in the propagation of economically valuable horticultural and woody species, enabling the cloning of plants and swift establishment of superior genotypes before integrating them into production or breeding schemes. The process of AR development is intricate and influenced by numerous intrinsic and environmental factors, encompassing phytohormones, light exposure, nutritional state, stress responses like injury, and genetic traits. This chapter provides an overview of the latest advancements in research concerning adventitious root formation, with a specific focus on the interplay of key hormones and their interactions, as well as the influence of light, a significant environmental factor.
A synthetic auxin for cloning mature trees.
Bellini, C.
Nature Biotechnology,1–2. January 2024.
Publisher: Nature Publishing Group
Paper
doi
link
bibtex
abstract
@article{bellini_synthetic_2024,
title = {A synthetic auxin for cloning mature trees},
copyright = {2024 Springer Nature America, Inc.},
issn = {1546-1696},
url = {https://www.nature.com/articles/s41587-024-02132-3},
doi = {10.1038/s41587-024-02132-3},
abstract = {A synthetic auxin improves the growth of adventitious roots in various plant species.},
language = {en},
urldate = {2024-10-07},
journal = {Nature Biotechnology},
author = {Bellini, Catherine},
month = jan,
year = {2024},
note = {Publisher: Nature Publishing Group},
keywords = {Auxin, Plant regeneration},
pages = {1--2},
}
A synthetic auxin improves the growth of adventitious roots in various plant species.