HbMyb1, a Myb transcription factor from Hevea brasiliensis, suppresses stress induced cell death in transgenic tobacco

文献类型： 外文期刊

第一作者： Peng, Shi-Qing

作者： Peng, Shi-Qing;Wu, Kun-Xin;Chen, Shou-Cai;Chen, Shou-Cai;Huang, Gui-Xiu

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关键词： Cell death;Hevea brasiliensis;Myb transcription factor;Tapping panel dryness

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

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收录情况： SCI

摘要： Tapping panel dryness (TPD) is a complex physiological syndrome found widely in rubber tree (Hevea brasiliensis) plantations that causes severe yield loss in natural rubber-producing countries. In an earlier study, we confirmed that there is a negative correlation between HbMyb1 expression and TPD severity. To further investigate the function of HbMyb1 in TPD, HbMyb1 was over-expressed in tobacco controlled by a CaMV 35S promoter. In transgenic plants expressing HbMyb1, cell death induced by UV-B irradiation, paraquat and the hypersensitive reaction to necrotrophic fungal infection (Botrytis cinerea) was suppressed with a close correlation between HbMyb1 protein levels and the extent of suppression. In addition the nuclear condensation and degradation were observed in laticifer cells of TPD trees, while the nucleus of laticifer cells of healthy trees was morphologically normal. On the basis of the results described above, we propose that HbMyb1 maybe suppress stress induced cell death in rubber trees.

分类号： Q945

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