Cytological atlas at meiosis reveals insights into pollen fertility in synthetic Brassica allotriploids between allotetraploid B. carinata and diploid B. rapa

Copyright © 2020. Published by Elsevier Masson SAS.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 148(2020) vom: 20. März, Seite 237-245
1. Verfasser: Yang, Yan (VerfasserIn)
Weitere Verfasser: Yan, Ge, Li, Zishuang, Yuan, Jiachen, Wei, Xiaochun, Wei, Fang, Tian, Baoming, Xie, Zhengqing, Shi, Gongyao, Zhang, Xiaowei, Cao, Gangqiang
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Brassica allotriploids Brassica carinata Brassica rapa Interspecific hybridization Meiosis Pollen fertility Polyploidy
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245 1 0 |a Cytological atlas at meiosis reveals insights into pollen fertility in synthetic Brassica allotriploids between allotetraploid B. carinata and diploid B. rapa 
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520 |a Copyright © 2020. Published by Elsevier Masson SAS. 
520 |a The formation of allopolyploid crops basically depends on the successful interspecific hybridization and polyploidization, which generally involves in a combination of distinct but related genomes from independent species. But cytological analysis of these initially synthesized allohaploids immediately after genome merging is poorly explored in regards to anther and pollen development to date. In this study, Brassica trigenomic allohaploids (ABC) were produced to investigate the immediate effects of the genome combinations on pollen fertility during anther development via crosses between natural allotetraploid B. carinata (BBCC) and diploid B. rapa (AA). The results showed that in the synthetic Brassica allotriploids (ABC), the anther development was completely disrupted, and the pollen grains were mostly inviable with varied genetic complements. In addition, the meiosis course was aberrantly altered and eccentric chromosomal configurations including multivalent, bridges and lags occurred frequently during metaphase I to anaphase II. Genomic in situ hybridization (GISH) further revealed that B genome of homoeology was frequently apt to interact with A and C genomes, and cytoskeletal organizations was improperly distributed during meiosis in these synthetic Brassica allotriploids. Furthermore, we also confirmed that the expression of typical meiosis-related genes was obviously repressed during anther development in these Brassica allotriploids. Taken together, our results provide a detailed cytology for insights into pollen development in the synthetic allotriploid hybrids, which are conventionally considered as a useful genetic resource for polyploid Brassica breeding 
650 4 |a Journal Article 
650 4 |a Brassica allotriploids 
650 4 |a Brassica carinata 
650 4 |a Brassica rapa 
650 4 |a Interspecific hybridization 
650 4 |a Meiosis 
650 4 |a Pollen fertility 
650 4 |a Polyploidy 
700 1 |a Yan, Ge  |e verfasserin  |4 aut 
700 1 |a Li, Zishuang  |e verfasserin  |4 aut 
700 1 |a Yuan, Jiachen  |e verfasserin  |4 aut 
700 1 |a Wei, Xiaochun  |e verfasserin  |4 aut 
700 1 |a Wei, Fang  |e verfasserin  |4 aut 
700 1 |a Tian, Baoming  |e verfasserin  |4 aut 
700 1 |a Xie, Zhengqing  |e verfasserin  |4 aut 
700 1 |a Shi, Gongyao  |e verfasserin  |4 aut 
700 1 |a Zhang, Xiaowei  |e verfasserin  |4 aut 
700 1 |a Cao, Gangqiang  |e verfasserin  |4 aut 
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773 1 8 |g volume:148  |g year:2020  |g day:20  |g month:03  |g pages:237-245 
856 4 0 |u http://dx.doi.org/10.1016/j.plaphy.2020.01.003  |3 Volltext 
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