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- Title
Arbuscular mycorrhizal fungi increase the proportion of cellulose and hemicellulose in the root stele of vetiver grass.
- Authors
Chen, Xun Wen; Kang, Yuan; So, Pui San; Ng, Charles Wang Wai; Wong, Ming Hung
- Abstract
Aims: <italic>Arabidopsis thaliana</italic> is the model plant that is mainly used in studying cellulose and hemicellulose (CH) biosynthesis. Unfortunately, <italic>A. thaliana</italic> does not associate with mycorrhiza and as a result there are only rare reports on the role of arbuscular mycorrhiza (AM) fungi on CH biosynthesis. This study aims to investigate the effects of AM fungi on changing the CH content in mycorrhizal plant.Methods: Three AM fungi, <italic>Glomus aggregatum</italic>, <italic>Rhizophagus intraradices</italic> and <italic>Funneliformis mosseae</italic>, were inoculated to vetiver grass (<italic>Chrysopogon zizanioides</italic>) and grown for 12 months. Roots were harvested, and the proportions of CH, lignin, lipids and hydrosoluble content were analysed. The corresponding root tensile strength (positively correlated with the proportion of CH) was measured to counter check the CH content.Results: Plants inoculated with AM showed a higher proportion of CH (<italic>P</italic> < 0.05) compared with uninoculated ones. This increase was coupled to a 40-60% enhancement in tensile strength. Potential mechanisms for this phenomenon are discussed.Conclusions: This is the first study showing that the proportion of CH and tensile strength of plant root could be significantly affected by AM symbiosis. It is thus desirable that future research on CH biosynthesis uses mycorrhizal-associating plants, such as medic (<italic>Medicago truncatula</italic>) and rice (<italic>Oryza sativa</italic>).
- Subjects
VESICULAR-arbuscular mycorrhizas; VETIVER; CELLULOSE synthase; HEMICELLULOSE; GLOMUS (Fungi); ARABIDOPSIS thaliana; PLANT-fungus relationships; MEDICAGO truncatula
- Publication
Plant & Soil, 2018, Vol 425, Issue 1/2, p309
- ISSN
0032-079X
- Publication type
Article
- DOI
10.1007/s11104-018-3583-z