scholarly journals Mutants in the imprintedPICKLE RELATED 2gene suppress seed abortion offertilization independent seedclass mutants and paternal excess interploidy crosses in Arabidopsis

2017 ◽  
Vol 90 (2) ◽  
pp. 383-395 ◽  
Author(s):  
Fang Huang ◽  
Qian-hao Zhu ◽  
Anyu Zhu ◽  
Xiaoba Wu ◽  
Liqiong Xie ◽  
...  
Keyword(s):  
Seed Abortion ◽  
Interploidy Crosses

Intervening in sibling competition for assimilates by controlled pollination prevents seed abortion under postpollination drought in maize

2020 ◽  
Vol 43 (4) ◽  
pp. 903-919 ◽  
Author(s):  
Si Shen ◽  
Xiao‐Gui Liang ◽  
Li Zhang ◽  
Xue Zhao ◽  
Yun‐Peng Liu ◽  
...  
Keyword(s):  
Sibling Competition ◽  
Seed Abortion ◽  
Controlled Pollination

scholarly journals VvHDZ28 positively regulate SA biosynthesis during seed abortion in Thompson Seedless

2021 ◽  
Author(s):  
Zhiqian Li ◽  
Yuntong Jiao ◽  
Chen Zhang ◽  
Mengru Dou ◽  
Kai Weng ◽  
...  
Keyword(s):  
Seed Abortion ◽  
Thompson Seedless

Intra-fruit seed abortion in a wind dispersed tree,Dalbergia sissoo Roxb: Proximate mechanisms

1996 ◽  
Vol 9 (5) ◽  
pp. 273-278 ◽  
Author(s):  
B. Mohan Raju ◽  
R. Uma Shaanker ◽  
K. N. Ganeshaiah
Keyword(s):  
Seed Abortion ◽  
Dalbergia Sissoo ◽  
Proximate Mechanisms

Ectopic expression of a R2R3 MYB transcription factor of dove tree (Davidia involucrata) aggravates seed abortion in Arabidopsis thaliana

2020 ◽  
Vol 47 (5) ◽  
pp. 454
Author(s):  
Jian Li ◽  
Tian Chen ◽  
Fengzhen Huang ◽  
Penghui Dai ◽  
Fuxiang Cao ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factor ◽  
Transgenic Plants ◽  
Ectopic Expression ◽  
Myb Transcription Factor ◽  
Seed Abortion ◽  
Transgenic Seeds ◽  
Genes Encoding ◽  
Colour Changes ◽  
R2r3 Myb

Serious seed abortion of dove tree (Davidia involucrate Baill.) is one of the critical factors leading to the low fecundity of this species. Seed abortion is a complicated process and various factors have been verified to synergistically determine the fate of seeds. To reveal the mechanism of seed abortion in D. involucrata, we performed transcriptome analysis in normal and abortive seeds of D. involucrata. According to the transcriptome data, we noticed that most of the genes encoding a MYB transcription factor were predominantly expressed in abortive seeds. Among these, a gene named DiMYB1 was selected and its function was validated in this study. Overexpression of DiMYB1 resulted in obviously reduced viability of transgenic seeds and seedlings, and caused a significantly higher seed abortion rate. The vegetative growth of transgenic plants was hindered, resulting in an earlier flowering time. In addition, colour changes occurred in transgenic plants. Some transgenic sprouts, stems and pods appeared purple instead of green in colour. Our finding demonstrated that DiMYB1 participates in multiple plant developmental processes, especially in seed development in Arabidopsis thaliana (L.) Heynh., which indicated the similar role of this gene in D. involucrata.

scholarly journals The Arabidopsis TRM61/TRM6 complex is a bona fide tRNA N1-methyladenosine methyltransferase

2020 ◽  
Vol 71 (10) ◽  
pp. 3024-3036
Author(s):  
Jun Tang ◽  
Pengfei Jia ◽  
Peiyong Xin ◽  
Jinfang Chu ◽  
Dong-Qiao Shi ◽  
...  
Keyword(s):  
Gene Expression ◽  
Embryo Development ◽  
Protein Biosynthesis ◽  
Seed Abortion ◽  
Bona Fide ◽  
The Stability

Abstract tRNA molecules, which contain the most abundant post-transcriptional modifications, are crucial for proper gene expression and protein biosynthesis. Methylation at N1 of adenosine 58 (A58) is critical for maintaining the stability of initiator methionyl-tRNA (tRNAiMet) in bacterial, archaeal, and eukaryotic tRNAs. However, although research has been conducted in yeast and mammals, it remains unclear how A58 in plant tRNAs is modified and involved in development. In this study, we identify the nucleus-localized complex AtTRM61/AtTRM6 in Arabidopsis as tRNA m1A58 methyltransferase. Deficiency or a lack of either AtTRM61 or AtTRM6 leads to embryo arrest and seed abortion. The tRNA m1A level decreases in conditionally complemented Attrm61/LEC1pro::AtTRM61 plants and this is accompanied by reduced levels of tRNAiMet, indicating the importance of the tRNA m1A modification for tRNAiMet stability. Taken together, our results demonstrate that tRNA m1A58 modification is necessary for tRNAiMet stability and is required for embryo development in Arabidopsis.

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