دورية أكاديمية
The genome-wide transcriptional consequences of the nullisomic-tetrasomic stocks for homoeologous group 7 in bread wheat
العنوان: | The genome-wide transcriptional consequences of the nullisomic-tetrasomic stocks for homoeologous group 7 in bread wheat |
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المؤلفون: | Rongzhi Zhang, Shuaifeng Geng, Zhengrui Qin, Zongxiang Tang, Cheng Liu, Dongfeng Liu, Guoqi Song, Yulian Li, Shujuan Zhang, Wei Li, Jie Gao, Xiaodong Han, Genying Li |
المصدر: | BMC Genomics, Vol 20, Iss 1, Pp 1-17 (2019) |
بيانات النشر: | BMC, 2019. |
سنة النشر: | 2019 |
المجموعة: | LCC:Biotechnology LCC:Genetics |
مصطلحات موضوعية: | Gene expression, Dosage deletion, Dosage compensation, Triticum aestivum L, Nullisomic-tetrasomic stocks, Biotechnology, TP248.13-248.65, Genetics, QH426-470 |
الوصف: | Abstract Background Hexaploid bread wheat (Triticum aestivum L) arose by two polyploidisation events from three diploid species with homoeologous genomes. Nullisomic-tetrasomic (nulli-tetra or NT) lines are aneuploid wheat plants lacking two and adding two of six homoeologous chromosomes. These plants can grow normally, but with significantly morphological variations because the adding two chromosomes or the remaining four chromosomes compensate for those absent. Despite these interesting phenomena, detailed molecular mechanisms underlying dosage deletion and compensation in these useful genetic materials have not been determined. Results By sequencing the transcriptomes of leaves in two-week-old seedlings, we showed that the profiles of differentially expressed genes between NT stocks for homoeologous group 7 and the parent hexaploid Chinese Spring (CS) occurred throughout the whole genome with a subgenome and chromosome preference. The deletion effect of nulli-chromosomes was compensated partly by the tetra-chromosomes via the dose level of expressed genes, according to the types of homoeologous genes. The functions of differentially regulated genes primarily focused on carbon metabolic process, photosynthesis process, hormone metabolism, and responding to stimulus, and etc., which might be related to the defective phenotypes that included reductions in plant height, flag leaf length, spikelet number, and kernels per spike. Conclusions The perturbation of the expression levels of transcriptional genes among the NT stocks for homoeologous group 7 demonstrated the gene dosage effect of the subgenome at the genome-wide level. The gene dosage deletion and compensation can be used as a model to elucidate the functions of the subgenomes in modern polyploid plants. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1471-2164 |
Relation: | http://link.springer.com/article/10.1186/s12864-018-5421-3; https://doaj.org/toc/1471-2164 |
DOI: | 10.1186/s12864-018-5421-3 |
URL الوصول: | https://doaj.org/article/4abdc39dd8804225908e18e6ad7a07f9 |
رقم الأكسشن: | edsdoj.4abdc39dd8804225908e18e6ad7a07f9 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 14712164 |
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DOI: | 10.1186/s12864-018-5421-3 |