Composition of root exudates of Miscanthus × Giganteus Greef et Deu
Open accessAbstract
V této práci bylo studováno složení kořenových exsudátů rostliny Miscanthus × Giganteus a rychlost kořenové exsudace. Miscanthus × Giganteus Greef et Deu je vytrvalá, rhizomatózní rostlina (C4-tráva), pocházející z jihovýchodní Asie. Tato rostlina je v rámci Evropy intenzivně studována z důvodu jejího využítí pro výrobu biopaliv, kompostů, v papírenském průmyslu či fytoremediacích atd. Druh M. × Giganteus představuje sterilní a pravděpodobně přírodní hybrid vzniklý křížením M. × sacchariflorus (diploid) a M. sinensis (tetraploid), s triploidním chromozomem, postrádající schopnost produkce semen. Tato studie byla iniciována z důvodu rozšíření základních poznatků o M. × Giganteus, které mohou být následně využívány pro účely testování účinnosti dekontaminace půd, znečištěných organickými polutanty. Rhizomy s kořeny M. × Giganteus byly získány z více než patnáctiletého porostu, který se nachází v Botanické zahradě a arboretu Mendelovy zemědělské a lesnické univerzity v Brně. Exsudáty z odstříhaných kořenů byly sbírány v demineralizované vodě po dobu 2 hodin, při pokojové teplotě. Analýza jednotlivých složek kořenových exsudátů (celkový organický uhlík, celkové cukry, bílkoviny a jednotlivé aminokyseliny) byla provedena standardně používanými metodami (spalování za vlhka, reakce s anthronovým reagentem, metodou podle Bradforda či HPLC). Výsledky studie ukázaly, že rychlost exsudace celkového organického uhlíku z odstříhnutých kořenů M. × Giganteus dosahovala v průměru 0,22 mmol . g-1 suchých kořenů za hodinu. Celkové cukry tvořily 7,8 % a bílkoviny 1,5 % celkového organického uhlíku. Z celkového počtu 17 aminokyselin (kyselina asparagová a glutamová, serin, histidin, glycin, threonin, alanin, tyrosin, valin, methionin, fenylalanin, isoleucin, leucin, prolin, arginin, cystin a lysin) byla nejvyšší rychlost kořenové exsudace stanovena v případě kyseliny asparagové, argininu, alaninu a kyseliny glutamové.
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Only two papers have been published with root exudate data from Miscanthus.
“Only two papers have been published with root exudate data from Miscanthus [96, 97].”
From Carbon Sequestration by Perennial Energy Crops: Is the Jury Still Out? (2015) · cites this paper as [96]
Hromadko's data were an order of magnitude larger than those presented by Kaňova and seem unrealistically large.
“Hromadko’s data [96] were an order of magnitude larger than those presented by Kaňova [97] which seems unrealistically large.”
From Carbon Sequestration by Perennial Energy Crops: Is the Jury Still Out? (2015) · cites this paper as [96]
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Percentages, sums and reported differences re-computed from the paper’s own numbers.
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- Authors
- Hromádko, L., Vranová, V., Techer, D., Laval-Gilly, P., Rejšek, K., Formánek, P., & Falla, J.
- Affiliations
- Mendel University in Brno (CZ)
- Centre National de la Recherche Scientifique (FR)
- Venue
- Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
- Publisher
- Mendel University Press
- Published
- 2014-10-05
- Volume
- 58
- Issue
- 1
- Pages
- 71-76
- ISSN
- 0524-7403 (ISSN-L)
- 1211-8516
- 2464-8310
- OpenAlex
- W2079089883
- Cited by
- 21
- References
- 34
- Citations by year
- 2026: 1 · 2025: 3 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 3 · 2017: 1 · 2016: 2 · 2015: 2 · 2014: 4
- FWCI
- 3.50
- Type
- journal article
- Language
- fr
- Open access
- diamond
- doi.org
- Licence
- Locations
- Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis (publishedVersion, cc-by-nc-nd)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Allelopathy and phytotoxic interactions
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Bioenergy crop production and management
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
- Keywords
- Miscanthus × giganteus, root exudates, root exudate composition, organic carbon, sugar, amino acids, nitrogen compounds, C4 grasses, rhizome, soil decontamination, phytoremediation
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