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- 저자 : Jin-ming Zhao;Han Xing (검색결과 2 건)
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Jin-ming Zhao;Han Xing,Yang Zhou; Jian-li Huang; Xiao-li Zhang; Long-ming Zhu; Xin-fang Wang 한국식물학회 2018 Journal of Plant Biology Vol.61 No.5
Chalcone isomerase (CHI) is a key enzyme ofthe flavonoid pathway that plays crucial roles in plant responsesto various pathogens. Our previous study using comparativetranscriptome analysis of soybean inoculated with or withoutPhytophthora sojae revealed Glyma.20G241500, a homologof CHI1A in Arabidopsis thaliana, to be induced by P.sojaein soybean. In the present study, we isolated the gene fromsoybean cultivar Nannong 10-1, designating it GmCHI1A. GmCHI1A transcripts were detected in soybean roots, stemsand leaves, with the highest levels in roots. Interestingly,GmCHI1A localizes to the cortical endoplasmic reticulum(ER). GmCHI1A was overexpressed in hairy roots to furtheruncover the roles of CHIs in soybean. Compared to emptyvector-expressing hairy roots (EV) infected with P. sojae,hairy roots overexpressing GmCHI1A (OE) exhibited decreasedP. sojae biomass accumulation, shortened the lesion lengthsand reduced zoospores germination. These results demonstratethat GmCHI1A plays positive roles in the response ofsoybean to P. sojae.
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Over-expression of GmHAL3 modulates salt stresses tolerance in transgenic arabidopsis
Na Guo,Ming-xia Wang,Chen-chen Xue,Dong Xue,Jin-yan Xu,Hai-tang Wang,Jun-Yi Gai,Han Xing,Jin-ming Zhao;Han Xing 한국식물학회 2016 Journal of Plant Biology Vol.59 No.5
The halotolerance protein HAL3, also known as SIS2, is a yeast protein that regulates the cell cycle and tolerance to salt stress through inhibition of the Ppz1 type 1 protein phosphatase. Although the roles of HAL3 have been demonstrated during the growth, development, and stress adaptation of Arabidopsis thaliana and Nicotiana tabacum, the function of HAL3 in other plant species, including soybean (Glycine max), has not been elucidated. In this study, GmHAL3a and GmHAL3b were isolated from Glycine max, and their roles were analyzed. GmHAL3a and GmHAL3b transcripts were detected in the roots, stems, leaves and seeds, with higher levels in the roots, and were induced by sodium chloride (NaCl), lithium chloride (LiCl), sorbitol, cold and ABA treatment. Overexpression of GmHAL3a or GmHAL3b in Arabidopsis accelerated the onset of flowering and resulted in more vigorous seed germination and increased tolerance to NaCl, LiCl, and sorbitol stress in seedlings, compared with wild type (WT) and empty vector control (VC) plants. Transgenic Arabidopsis plants accumulated proline and eliminated superoxide radical (O2 −) in response to the stress. In addition, transcription levels of the stress-related genes RD22 and P5CS1 were substantially higher in transgenic Arabidopsis than in WT and VC plants. Taken together, the data indicate that GmHAL functions as a positive regulator of the response to salt, lithium cations and sorbitol stress.
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