Abstract:
:Guttation, the loss of water and dissolved materials from uninjured plant organs, is a common phenomenon in higher plants. By using endoplasmic reticulum signal peptides fused to the recombinant protein sequences, we have generated transgenic tobacco (Nicotiana tabacum L. cv Wisconsin) plants that secrete three heterologous proteins of different genetic backgrounds (bacterial xylanase, green fluorescent protein of jellyfish [Aequorea victoria], and human placental alkaline phosphatase) through the leaf intercellular space into tobacco guttation fluid. Production rates of 1.1 microg/g of leaf dry weight per day were achieved for alkaline phosphatase with this protein comprising almost 3% of total soluble protein in the guttation fluid. Guttation fluid can be collected throughout a plant's life, thus providing a continuous and nondestructive system for recombinant protein production. Guttation fluid has the potential of increasing the efficiency of recombinant protein production technology by increasing yield, abolishing extraction, and simplifying its downstream processing.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Komarnytsky S,Borisjuk NV,Borisjuk LG,Alam MZ,Raskin Idoi
10.1104/pp.124.3.927subject
Has Abstractpub_date
2000-11-01 00:00:00pages
927-34issue
3eissn
0032-0889issn
1532-2548journal_volume
124pub_type
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