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A Hydroponic Co-cultivation System for Simultaneous and Systematic Analysis of Plant/Microbe Molecular Interactions and Signaling

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Bag culture: a method for root-root co-culture.

Abdolali Mohagheghzadeh¹, Azra Gholami, Shiva Hemmati

¹Department of Pharmacognosy, Faculty of Pharmacy and Pharmaceutical Research Center, Shiraz University of Medical Sciences and Health Services, P.O. Box 71345-1583, Shiraz, IR Iran. Mohaghegh@sums.ac.ir

Zeitschrift Fur Naturforschung. C, Journal of Biosciences

|April 5, 2008

Summary

The novel "bag culture" method for growing Linum hairy roots together showed decreased growth and lignan production due to competition. However, single L. persicum cultures in bags yielded higher podophyllotoxin levels.

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Area of Science:

Plant Biotechnology
Secondary Metabolite Production
Plant Cell Culture

Background:

Hairy root cultures are a valuable tool for producing plant-derived compounds.
Co-culturing different plant species can influence secondary metabolite production.
Optimizing co-culture conditions is crucial for maximizing yields.

Purpose of the Study:

To develop and evaluate a "bag culture" method for co-culturing Linum persicum and Linum austriacum hairy roots.
To investigate the impact of co-culturing on the growth and production of podophyllotoxin (PTOX) and 6-methoxypodophyllotoxin (MPTOX).

Main Methods:

Establishment of L. persicum and L. austriacum hairy root cultures using Agrobacterium rhizogenes.
Co-culturing of L. persicum hairy roots in mesh bags with L. austriacum hairy roots.
Quantification of PTOX and MPTOX using High-Performance Liquid Chromatography (HPLC).

Main Results:

Co-culturing resulted in decreased growth indexes and lignan content for both hairy root types.
Competition for precursors and limited medium availability likely contributed to reduced yields.
Single L. persicum cultures in bags showed significantly higher MPTOX (0.17 g/100 g DW) and PTOX (0.02 g/100 g DW) levels.

Conclusions:

The "bag culture" method is feasible for co-culturing Linum hairy roots.
Co-culturing can lead to inter-specific competition, affecting growth and metabolite production.
Immobilization within the bag may enhance secondary metabolite accumulation in single L. persicum cultures.