Growth Induced Translocation Effectively Directs an Amino Acid Analogue to Developing Zones in Agaricus Bisporus
- Author: mycolabadmin
- 2020-12-01
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Summary
This research investigated how button mushrooms transport nutrients through their root-like network of fungal threads (mycelium). Scientists tracked the movement of labeled nutrients and found that mushrooms can efficiently direct nutrients to where they’re needed most – either to growing edges or developing mushrooms. This transport happens much faster when the mushroom network grows in one direction rather than randomly.
Impacts on everyday life:
• Improved understanding could lead to more efficient mushroom farming techniques
• Better cultivation methods may result in higher quality mushrooms for consumers
• Knowledge of nutrient transport could help develop more sustainable farming practices
• This research could influence how mushrooms are grown commercially
• Understanding fungal networks has applications in natural ecosystem management
Background
The vegetative mycelium of Agaricus bisporus supplies developing white button mushrooms with water and nutrients. However, the mechanisms of nutrient transport and the role of different mycelial regions in feeding mushroom development were not well understood.
Objective
To track and understand the translocation patterns of nutrients in Agaricus bisporus mycelium during vegetative growth and mushroom development using radiolabeled amino acid analogue tracking.
Results
The study found that 14C-AIB translocated to the mycelium periphery at velocities up to 6.6 mm/h, 30 times faster than the growth rate. When mushrooms began developing, translocation redirected to fruiting bodies via mycelium and hyphal cords. Directional growth cultures showed 5-fold higher translocation rates and more abundant cord formation compared to non-directional growth, with maximum translocation distances of ≥50 cm versus 22 cm respectively.
Conclusion
Nutrient translocation in A. bisporus demonstrates dynamic switching between vegetative growth and developing mushrooms, particularly through cord networks. The efficiency of translocation is enhanced by directional growth patterns and changes in source-sink relationships, which has important implications for mushroom cultivation practices.
- Published in:Fungal Biology,
- Study Type:Experimental Research,
- Source: 10.1016/j.funbio.2020.09.002