NDLI: Expression of an arctic chickweed dehydrin, CarDHN, enhances tolerance to abiotic stress in tobacco plants

Content Provider	Springer Nature Link
Author	Hill, William Jin, Xiao Lu Zhang, Xing Hai
Copyright Year	2016
Abstract	Dehydrin proteins are known to serve a wide variety of intracellular protective functions and enhance the capability of plants to deal with abiotic stresses. The gene for a SK5 type dehydrin from the arctic chickweed plant Cerastium arcticum (CarDHN) was introduced into tobacco plants. Stress responses of the transgenic plants were evaluated. Compared to the untransformed wild type plants, the CarDHN-expressing plants exhibited improved tolerance to salt and osmotic stress during seed germination and seedling growth, and survived in −10 °C freezing treatment. These CarDHN plants also accumulated lower levels of free proline under salt stress and exhibited lower transcription levels of HSP70 and HSP26 under drought or salt stress, suggesting a possible pleiotropic effect of CarDHN on stress response at cellular or molecular level. However, no significant phenotypic differences were observed between the wild type and the CarDHN-expressing plants under drought stress. Our study demonstrated the specific role of the arctic chickweed dehydrin in tolerance to salt, osmotic and freezing stress.
Starting Page	323
Ending Page	334
Page Count	12
File Format	PDF
ISSN	01676903
Journal	Plant Growth Regulation
Volume Number	80
Issue Number	3
e-ISSN	15735087
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-03-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cerastium arcticum (arctic chickweed) CarDHN Dehydrin Drought stress Freezing Heat shock proteins Proline Salt and osmotic stress Tobacco Plant Sciences Plant Anatomy/Development Plant Physiology Agriculture
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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