Reproductive barriers in interspecific hybridizations among Chimonanthus praecox (L.) Link, C. salicifolius S. Y. Hu, and C. nitens Oliver from pollen–pistil interaction and hybrid embryo development

2014 ◽  
Vol 177 ◽  
pp. 85-91 ◽  
Author(s):  
Wenpeng Wang ◽  
Lihua Zhou ◽  
Yaohui Huang ◽  
Zhiyi Bao ◽  
Hongbo Zhao
Keyword(s):  
Embryo Development ◽  
Reproductive Barriers ◽  
Hybrid Embryo ◽  
Chimonanthus Praecox

Effects of ε-amino-n-caproic acid and L-lysine on the development of hybrid embryos of triticale (× Triticosecale)

1977 ◽  
Vol 55 (17) ◽  
pp. 2330-2334 ◽  
Author(s):  
Tomoaki Taira ◽  
E. N. Larter
Keyword(s):  
Embryo Development ◽  
Triticum Turgidum ◽  
Tetraploid Wheat ◽  
Caproic Acid ◽  
Physiological Barrier ◽  
Hybrid Embryo ◽  
Wheat Parent

The injection of either ε-amino-n-caproic acid (EACA) or L-lysine–HCl into the tetraploid wheat parent (Triticum turgidum L. var. durum cv. Jori) as early as 1 day after pollination with rye (Secale sp.) significantly enhanced the development of hybrid embryos in vivo. The success with which the embryos could be artificially cultured was improved accordingly. One millilitre of either compound applied at 1.0 mg/ml concentration resulted in a significant increase in the frequency of normal-appearing embryos. It is concluded that the application of EACA or its analogue L-lysine could be used in a hybridization program involving certain strains of wheat and rye to partially overcome the physiological barrier to hybrid embryo development.

A novel ERF transcription factor, CmERF12, negatively influences chrysanthemum embryo development

2021 ◽  
Author(s):  
Sujuan Xu ◽  
Huizhong Hou ◽  
Ze Wu ◽  
Jingya Zhao ◽  
Fengjiao Zhang ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Embryo Development ◽  
Chrysanthemum Morifolium ◽  
Original Method ◽  
Distant Hybridization ◽  
Embryo Abortion ◽  
Real Time Quantitative Pcr ◽  
Hybrid Embryo ◽  
Ear Motif ◽  
Ethylene Responsive Factor

Abstract Embryo abortion often occurs during distant hybridization events. Apetala 2/ethylene-responsive factor (AP2/ERF) proteins are key transcription factor (TF) regulators of plant development and stress resistance, but their roles in hybrid embryo development are poorly understood. We isolated a novel AP2/ERF TF, CmERF12, from chrysanthemum and showed that it adversely affects embryo development during distant hybridization. Transcriptome and real-time quantitative PCR data demonstrated that CmERF12 is expressed at significantly higher levels in aborted ovaries compared with normal ovaries. CmERF12 localizes to the cell nucleus and contains a conserved EAR motif that mediates its transcription repressor function in yeast and plant cells. We generated an amiR-CmERF12 transgenic Chrysanthemum morifolium (C.m.) var. ‘Yuhualuoying’ and conducted distant hybridization with the wild-type tetraploid, Chrysanthemum nankingense (C.n.), revealing that CmERF12 knockdown significantly promoted embryo development and increased the seed setting rates during hybridization. The expression of various embryo development-related genes was up-regulated in developing ovaries from the ♀amiR-CmERF12-C.m. × ♂C.n. cross. Furthermore, CmERF12 directly interacted with CmSUF4 and significantly reduced its ability to activate its target gene CmEC1. Overall, we invented an original method to overcome plant distant hybridization barriers and unraveled the mechanism by which CmERF12 negatively affects chrysanthemum embryo development.

Rho-GTPase effector ROCK regulates mouse oocyte maturation and embryo development

2014 ◽  
Author(s):  
Xing Duan ◽  
Zhen-Bo Wang ◽  
Xiang-Shun Cui ◽  
Nam-Hyung Kim ◽  
Shao-Chen Sun
Keyword(s):  
Embryo Development ◽  
Oocyte Maturation ◽  
Rho Gtpase ◽  
Mouse Oocyte

Effect of dicamba on wheat haploid embryo development

2008 ◽  
Vol 36 (1) ◽  
pp. 43-51 ◽  
Author(s):  
S. Prodanovic ◽  
F. Matzk ◽  
D. Zoric
Keyword(s):  
Embryo Development ◽  
Haploid Embryo
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