ZbAGL11, a class D MADS-box transcription factor of Zanthoxylum bungeanum, is involved in sporophytic apomixis  

作　　者：Xitong Fei Qianqian Shi Yichen Qi Shujie Wang Yu Lei Haichao Hu Yulin Liu Tuxi Yang Anzhi Wei 

机构地区：[1]College of Forestry,Northwest Agriculture and Forestry University,Yangling,Shaanxi,China 2 Research Centre for Engineering and Technology of Zanthoxylum State Forestry Administration,Yangling,Xianyang 712100,China

出　　处：《Horticulture Research》2021年第1期316-327,共12页园艺研究（英文）

基　　金：Nati onal Key Resea rch and Development Program project funding(2018YFD1000605)。

摘　　要：Apomixis is a reproductive model that bypasses sexual reproduction,so it does not require the combination of paternal and maternal gametes but instead results in the production of offspring directly from maternal tissues.This reproductive mode results in the same genetic material in the mother and the offspring and has signi fi cant applications in agricultural breeding.Molecular and cytological methods were used to identify the reproductive type of Zanthoxylum bungeanum(ZB).Fluorescence detection of the ampli fi ed products of 12 pairs of polymorphic SSR primers showed consistent fl uorescence signals for mother and offspring,indicating that no trait separation occurred during reproduction.In addition,the cytological observation results showed differentiation of ZB embryos(2n)from nucellar cells(2n)to form inde fi nite embryonic primordia and then form adventitious embryos(2n),indicating that the apomictic type of ZB is sporophytic apomixis.The MADS-box transcription factor ZbAGLll was highly expressed during the critical period of nucellar embryo development in ZB.Unpollinated ZbAGLll-OE Arabidopsis produced fertile offspring and exhibited an apomictic phenotype.The overexpression of ZbAGL11 increased the callus induction rate of ZB tissue.In addition,the results of the yeast two-hybrid experiment showed that ZbAGL11 could interact with the ZbCYP450 and ZbCAD11 proteins.Our results demonstrate that ZbAGL11 can cause developmental disorders of Arabidopsis fl ower organs and result in apomixis-like phenotypes.

关 键 词：MOTHER ARABIDOPSIS OFFSPRING 

分 类 号：S573.9[农业科学—作物学]