巴西橡胶树HbWRKY基因家族10个成员在染色体上的定位
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1海南大学热带农林学院,海口 570228;2中国热带农业科学院橡胶研究所, 海南儋州571737,1海南大学热带农林学院,海口 570228;,1海南大学热带农林学院,海口 570228;,1海南大学热带农林学院,海口 570228;,1海南大学热带农林学院,海口 570228;

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国家自然科学基金项目(31360186);国家天然橡胶产业技术体系(CARS-33-GW)


Cytogenetic Localization of 10 HbWRKY Gene Family Members of on the Chromosomes of Hevea brasiliensis
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1Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228;2Rubber Research Institute , Chinese Academy of Topical Agricultural Sciences, Danzhou Hainan 571737,1Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228;,1Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228;,1Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228;,1Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228;

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    摘要:

    HbWRKYs是橡胶树中的一类转录因子基因家族,参与橡胶树的产胶、衰老和抗逆胁迫等生理生化过程,植物激素类物质刺激(如乙烯利、茉莉酸、水杨酸等)、病原菌侵染和机械伤害均能诱导HbWRKYs基因的表达。目前,该基因家族的大部分基因已被克隆和分析,但这些基因在染色体上的具体位置尚未确定。本研究以巴西橡胶树‘热研7-33-97’品种为材料,利用荧光原位杂交技术(FISH)和原位PCR技术对HbWRKYs基因家族中10个成员(HbWRKY1、HbWRKY2、HbWRKY3、HbWRKY4、HbWRKY5、HbWRKY7、HbWRKY9、HbWRKY11、HbWRKY27和HbWRKY75)进行了物理定位分析。结果表明:HbWRKY1、HbWRKY4和HbWRKY5基因同时定位在第9号染色体上,其中HbWRKY1和HbWRKY4在第9号染色体短臂上,其信号位点距离着丝粒的平均百分距分别为57.38和4.57,HbWRKY5在第9号染色体长臂上,其信号位点距离着丝粒的平均百分距为31.67;HbWRKY2、HbWRKY3、HbWRKY7、HbWRKY9、HbWRKY11和HbWRKY75基因分别定位在第8、3、4、10、2和7号染色体的短臂上,信号位点距离着丝粒的平均百分距分别为6.00、12.30、4.40、45.21、5.74和26.11;HbWRKY27基因定位在第6号染色体长臂上,其信号位点距离着丝粒的平均百分距为38.88。本文还讨论这些基因与其他已定位基因之间的位置关系。

    Abstract:

    HbWRKYs is a family of transcription factor genes in Hevea brasiliensis, which is involved in the physiological and biochemical processes such as gum production, senescence and stress resistance of Hevea brasiliensis. Phytohormones (such as ethephon, jasmonic acid, and salicin acid, etc. ),pathogen infestation and mechanical injury can all induce the expression of HbWRKYs . At present, most members of this gene family have been cloned and analyzed, but the exact location of these genes on the chromosome has not yet been determined. In this paper, useing Hevea brasiliensis ‘Reyan 7-33-97’ as the material and the technique of FISH and in situ PCR were used to identify the 10 members of HbWRKYs (HbWRKY1, HbWRKY2, HbWRKY3, HbWRKY4, HbWRKY5, HbWRKY7, HbWRKY9, HbWRKY11, HbWRKY27 and HbWRKY75). The results showed that the HbWRKY1, HbWRKY4 and HbWRKY5 genes were located on chromosome 9 at the same time, in which HbWRKY1 and HbWRKY4 were located on the short arm of chromosome 9. The average distances of their signal sites from centromeres were 57.38 and 4.57, respectively. HbWRKY5 was located on the long arm of chromosome 9, the average distance from the centromeric signal site is 31.67; HbWRKY2, HbWRKY3, HbWRKY7, HbWRKY9, HbWRKY11 and HbWRKY75 genes were mapped on the short arms of chromosomes 8, 3, 4, 10, 2, and 7,and the mean distances from the centromeres of signal sites were respectively 6.00, 12.30, 4.40, 45.21, 5.74 and 26.11 ;The HbWRKY27 gene is located on the long arm of chromosome 6, and the mean distance from the centromeric signal site is 38.88. This article also discusses the positional relationship between these genes and other mapped genes.

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刘正林,庄南生,王英,等.巴西橡胶树HbWRKY基因家族10个成员在染色体上的定位[J].植物遗传资源学报,2018,19(6):1170-1179.

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  • 收稿日期:2018-05-10
  • 最后修改日期:2018-08-06
  • 录用日期:2018-06-22
  • 在线发布日期: 2018-11-14
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