Cloning and functional analysis of five TERMINAL FLOWER 1/CENTRORADIALIS-like genes from Hevea brasiliensis
文献类型： 外文期刊
作者： Bi, Zhenghong 1 ; Tahir, Ayesha T. 2 ; Huang, Huasun 1 ; Hua, Yuwei 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, Key Lab Rubber Biol, Minist Agr, Danzhou 571737, Peoples R China
2.COMSATS Univ, Dept Biosci, Islamabad, Pakistan
期刊名称：PHYSIOLOGIA PLANTARUM （ 影响因子：4.5； 五年影响因子：4.576 ）
ISSN： 0031-9317
年卷期： 2019 年 166 卷 2 期
页码：
收录情况： SCI
摘要： Five TERMINAL FLOWER 1 (TFL1)/CENTRORADIALIS (CEN)-like genes were isolated and characterized from rubber tree (Hevea brasiliensis). All genes, except HbCEN1, were found to have conserved genomic organization, characteristic of the phosphatidyl ethanolamine-binding protein (PEBP) family. Overexpression of all of them delayed flowering and altered flower architecture compared with the wild-type (wt) counterpart. In addition, as premature-flowering of the terminal bud was successfully overcome in the tfl1-1 mutant of Arabidopsis, all these genes have a potential function similar to TFL1. Quantitative reverse transcriptase-polymerase chain reaction analysis showed higher expressions of HbCEN1 and HbCEN2 in the shoot apices and stems of both immature and mature rubber trees than in reproductive organs. HbTFL1-1 and HbTFL1-2 expression was confined to roots of 3-month-old seedlings and HbTFL1-3 was significantly higher in the shoot apices of these seedlings. These results suggested that HbCEN1 and HbCEN2 could be associated with the development of vegetative growth, whereas HbTFL1-1, HbTFL1-2 and HbTFL1-3 seem to be mainly related with maintenance of juvenility. In addition, four of the five genes displayed variable diurnal expression, HbTFL1-1 and HbTFL1-3 being mainly expressed during the night whereas HbCEN1 and HbCEN2 showed irregular diurnal rhythms.
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