Transgenic tomato overexpressing ath-miR399d improves growth under abiotic stress conditions

Transgenic tomato overexpressing ath-miR399d improves growth under abiotic stress conditions Phosphorus (P) is an essential element required for plant growth and development. Abiotic stresses, such as cold and P deficiency cause adverse effects on growth of plants, inhibit accumulation or translocation of mineral nutrients such as P, and often constrain the productivity and quality of crops. miR399 as a long-distance signal controls systemic phosphate homeostasis by modulating phosphate uptake and transport. However, overexpression of miR399 causes P toxicity and results in retarded growth. Thus, we constructed a transgenic tomato (Solanum lycopersicum L., C1), which contains foreign gene ath-miR399d under the control of rd29A promoter. In the transgenic C1 expression of the miR399d gene showed a stress-inducible pattern. Results showed that miR399d was moderately up-regulated in response to salinity and cold stresses. In soil, dry weight was enhanced in transgenic tomato under low temperature and P deficiency conditions. The transgenic tomato has potential to improve growth when it is exposed to other abiotic stresses such as salinity and drought. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Transgenic tomato overexpressing ath-miR399d improves growth under abiotic stress conditions

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Publisher
Springer Journals
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443715030061
Publisher site
See Article on Publisher Site

Abstract

Phosphorus (P) is an essential element required for plant growth and development. Abiotic stresses, such as cold and P deficiency cause adverse effects on growth of plants, inhibit accumulation or translocation of mineral nutrients such as P, and often constrain the productivity and quality of crops. miR399 as a long-distance signal controls systemic phosphate homeostasis by modulating phosphate uptake and transport. However, overexpression of miR399 causes P toxicity and results in retarded growth. Thus, we constructed a transgenic tomato (Solanum lycopersicum L., C1), which contains foreign gene ath-miR399d under the control of rd29A promoter. In the transgenic C1 expression of the miR399d gene showed a stress-inducible pattern. Results showed that miR399d was moderately up-regulated in response to salinity and cold stresses. In soil, dry weight was enhanced in transgenic tomato under low temperature and P deficiency conditions. The transgenic tomato has potential to improve growth when it is exposed to other abiotic stresses such as salinity and drought.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Apr 29, 2015

References

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