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Genome-Wide Identification and Expression Analysis of Growth-Regulating Factors in Eucommia ulmoides Oliver (Du-Zhong)

文献类型： 外文期刊

作者： Wang, Ruoruo 1 ; Zhu, Ying 1 ; Zhao, Degang 1 ;

作者机构： 1.Guizhou Acad Agr Sci, Biotechnol Inst Guizhou Prov, Plant Conservat Technol Ctr, Guizhou Key Lab Agr Biotechnol, Guiyang 550006, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Crop Genet Resources & Germplasm Innovat K, Guiyang 550006, Peoples R China

3.Guizhou Univ, Key Lab Plant Resource Conservat & Germplasm Innov, Minist Educ, Guiyang 550025, Peoples R China

关键词： growth-regulating factor; miR396; Eucommia ulmoides; GA(3); expression pattern

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 9 期

页码：

收录情况： SCI

摘要： The roots, stems, leaves, and seeds of Eucommia ulmoides contain a large amount of trans-polyisoprene (also known as Eu-rubber), which is considered to be an important laticiferous plant with valuable industrial applications. Eu-rubber used in industry is mainly extracted from leaves. Therefore, it is of great significance to identify genes related to regulating the leaf size of E. ulmoides. Plant growth-regulating factors (GRFs) play important roles in regulating leaf size, and their functions are highly conserved across different plant species. However, there have been very limited reports on EuGRFs until now. In this study, eight canonical EuGRFs with both QLQ and WRC domains and two putative eul-miR396s were identified in the chromosome-level genome of E. ulmoides. It is found that, unlike AtGRFs, all EuGRFs contain the miR396s binding site in the terminal of WRC domains. These EuGRFs were distributed on six chromosomes in the genome of E. ulmoides. Collinearity analysis of the E. ulmoides genome revealed that EuGRF1 and EuGRF3 exhibit collinear relationships with EuGRF2, suggesting that those three genes may have emerged via gene replication events. The collinear relationship between EuGRFs, AtGRFs, and OsGRFs showed that EuGRF5 and EuGRF8 had no collinear members in Arabidopsis and rice. Almost all EuGRFs show a higher expression level in growing and developing tissues, and most EuGRF promoters process phytohormone-response and stress-induced cis-elements. Moreover, we found the expression of EuGRFs was significantly induced by gibberellins (GA(3)) in three hours, and the height of E. ulmoides seedlings was significantly increased one week after GA(3) treatment. The findings in this study provide potential candidate genes for further research and lay the foundation for further exploring the molecular mechanism underlying E. ulmoides development in response to GA(3).

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