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Diverse function of the PISTILLATA, APETALA 3, and AGAMOUS-like MADS-box genes involved in the floral development in Alpinia hainanensis (Zingiberaceae)

文献类型： 外文期刊

作者： Li, Xiumei 1 ; Kuang, Yanfeng 2 ; Ye, Yushi 2 ; Chen, Zhongjian 1 ; Zhang, Mingyong 2 ;

作者机构： 1.Guangdong Acad Agr Sci, Agrobiol Gene Res Ctr, Guangdong Prov Key Lab Crop Germplasm Resources Pr, Guangzhou 510640, Peoples R China

2.Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, Guangzhou 510650, Peoples R China

3.Chuangxin Bldg 1306 Room,20 Jinyin Rd, Guangzhou, Peoples R China

4.Expt Bldg 203 Room,723 Xingke Rd, Guangzhou, Peoples R China

5.Chuangxin Bldg R1306,20 Jinyin Rd, Guangzhou, Peoples R China

6.Expt Bldg R219,723 Xingke Rd, Guangzhou, Peoples R China

关键词： Homeosis; Ginger families; MADS-box; B -class gene; C -class gene; Floral organ; Protein interaction; Petaloidy

期刊名称：GENE （ 影响因子：3.913； 五年影响因子：3.48 ）

ISSN： 0378-1119

年卷期： 2022 年 839 卷

页码：

收录情况： SCI

摘要： Zingiberaceae is the vital clue and key node in the decreased process of fertile stamens in Zingiberales, helping to understand the evolution of the ginger families. This study focuses on Alpinia hainanensis to investigate the function of B- and C-class MADS-box genes in floral development. The introns size of two B-class genes AhPI and AhAP3, and one C-class gene AhAG are quite variable. By contrast, the positions of the corresponding introns are conserved, resulting in a similar exon size in homologs. The typical region 70 bp-CCAATCA element was not found in the second intron of AhAG compared to AG homologs. The subcellular localization showed that AhAP3 was in both intranuclear and extranuclear. The heterodimer was formed between APETALA3 and PISTILLATA but not between the B- and C-class proteins using Y2H and BiFC. The 35S::AhAG heterologous transformed Arabidopsis had curly and smaller rosette leaves with early flowering. Floral organs had no homeotic conversion, albeit sepals and petals reduced in size. Siliques development was affected and displayed wrinkled and shorter. By contrast, 35S::AhAP3 and 35S::AhPI did not show any modified phenotype in transgenic Arabidopsis thaliana. We first proposed the model for Alpinia flower development. MADS-box transcription factor binding at particular genomic locations and interaction with partners may be crucial for the development of the floral organ.

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