NDLI: NnHSP17.5, a cytosolic class II small heat shock protein gene from Nelumbo nucifera, contributes to seed germination vigor and seedling thermotolerance in transgenic Arabidopsis

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NnHSP17.5, a cytosolic class II small heat shock protein gene from Nelumbo nucifera, contributes to seed germination vigor and seedling thermotolerance in transgenic Arabidopsis

Content Provider	Springer Nature Link
Author	Zhou, Yuliang Chen, Huhui Chu, Pu Li, Yin Tan, Bin Ding, Yu Tsang, Edward W. T. Jiang, Liwen Wu, Keqiang Huang, Shangzhi
Copyright Year	2011
Abstract	In plants, small heat shock proteins (sHSPs) are unusually abundant and diverse proteins involved in various abiotic stresses, but their functions in seed vigor remain to be fully explored. In this study, we report the isolation and functional characterization of a sHSP gene, NnHSP17.5, from sacred lotus (Nelumbo nucifera Gaertn.) in seed germination vigor and seedling thermotolerance. Sequence alignment and phylogenetic analysis indicate that NnHSP17.5 is a cytosolic class II sHSP, which was further supported by the cytosolic localization of the NnHSP17.5-YFP fusion protein. NnHSP17.5 was specifically expressed in seeds under normal conditions, and was strongly up-regulated in germinating seeds upon heat and oxidative stresses. Transgenic Arabidopsis seeds ectopically expressing NnHSP17.5 displayed enhanced seed germination vigor and exhibited increased superoxide dismutase activity after accelerated aging treatment. In addition, improved basal thermotolerance was also observed in the transgenic seedlings. Taken together, this work highlights the importance of a plant cytosolic class II sHSP both in seed germination vigor and seedling thermotolerance.
Starting Page	379
Ending Page	389
Page Count	11
File Format	PDF
ISSN	07217714
Journal	Plant Cell Reports
Volume Number	31
Issue Number	2
e-ISSN	1432203X
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-10-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Arabidopsis Oxidative stresses Sacred lotus Seed germination vigor Seedling thermotolerance sHSPs Biotechnology Plant Sciences Plant Biochemistry Cell Biology
Content Type	Text
Resource Type	Article
Subject	Plant Science Medicine Agronomy and Crop Science

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NnHSP17.5, a cytosolic class II small heat shock protein gene from Nelumbo nucifera, contributes to seed germination vigor and seedling thermotolerance in transgenic Arabidopsis.

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NnHSP17.5, a cytosolic class II small heat shock protein gene from Nelumbo nucifera, contributes to seed germination vigor and seedling thermotolerance in transgenic Arabidopsis

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NnHSP17.5, a cytosolic class II small heat shock protein gene from Nelumbo nucifera, contributes to seed germination vigor and seedling thermotolerance in transgenic Arabidopsis