Journal
BMB REPORTS
Volume 46, Issue 1, Pages 31-36Publisher
KOREAN SOCIETY BIOCHEMISTRY & MOLECULAR BIOLOGY
DOI: 10.5483/BMBRep.2013.46.1.090
Keywords
Drought tolerance; OsHsfA7; Rice; Root morphology; Salt tolerance
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Funding
- Natural Science Foundation of China [30870206]
- National Special Key Science and Technology Project of China [2009ZX08001-026B]
- Special Key Science and Technology Project of Hunan Province [2009FJ1004-1]
- Provincial Youth Foundation of Hunan [09B045]
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Heat shock proteins play an important role in plant stress tolerance and are mainly regulated by heat shock transcription factors (Hsfs). In this study, we generated transgenic rice over-expressing OsHsfA7 and carried out morphological observation and stress tolerance assays. Transgenic plants exhibited less, shorter lateral roots and root hair. Under salt treatment, over-expressing OsHsfA7 rice showed alleviative appearance of damage symptoms and higher survival rate, leaf electrical conductivity and malondialdehyde content of transgenic plants were lower than those of wild type plants. Meanwhile, transgenic rice seedlings restored normal growth but wild type plants could not be rescued after drought and re-watering treatment. These findings indicate that over-expression of OsHsfA7 gene can increase tolerance to salt and drought stresses in rice seedlings. [BMB Reports 2013; 46(1): 31-36]
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